US20070199879A1 - Water filter assembly - Google Patents
Water filter assembly Download PDFInfo
- Publication number
- US20070199879A1 US20070199879A1 US11/651,148 US65114807A US2007199879A1 US 20070199879 A1 US20070199879 A1 US 20070199879A1 US 65114807 A US65114807 A US 65114807A US 2007199879 A1 US2007199879 A1 US 2007199879A1
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- US
- United States
- Prior art keywords
- assembly
- filter
- connector
- water
- filter assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 165
- 238000001914 filtration Methods 0.000 claims abstract description 54
- 238000007789 sealing Methods 0.000 claims 6
- 230000000903 blocking effect Effects 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- 125000006850 spacer group Chemical group 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005276 aerator Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000002537 cosmetic Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000012864 cross contamination Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/30—Filter housing constructions
- B01D35/306—Filter mounting adapter
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
- C02F1/003—Processes for the treatment of water whereby the filtration technique is of importance using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
- C02F9/20—Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/02—Plumbing installations for fresh water
- E03C1/04—Water-basin installations specially adapted to wash-basins or baths
- E03C1/0404—Constructional or functional features of the spout
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/30—Filter housing constructions
- B01D2201/301—Details of removable closures, lids, caps, filter heads
- B01D2201/302—Details of removable closures, lids, caps, filter heads having inlet or outlet ports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/40—Special measures for connecting different parts of the filter
- B01D2201/4015—Bayonet connecting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/40—Special measures for connecting different parts of the filter
- B01D2201/4023—Means for connecting filter housings to supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/40—Special measures for connecting different parts of the filter
- B01D2201/4076—Anti-rotational means
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/006—Cartridges
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2307/00—Location of water treatment or water treatment device
- C02F2307/06—Mounted on or being part of a faucet, shower handle or showerhead
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C2201/00—Details, devices or methods not otherwise provided for
- E03C2201/40—Arrangement of water treatment devices in domestic plumbing installations
Definitions
- an aerator assembly 216 is connected to the spout tip 208 to introduce air into the unfiltered water flowing out of the spout tip 208 .
- the aerator assembly 216 may reduce splashing, while increasing areas of coverage and wetting efficiency.
- the first valve assembly 220 includes a first valve body 222 , a first valve 224 and a first valve retaining nut 226 .
- the first valve body 222 includes a hot water supply tube 228 , a cold water supply tube 230 and a water outlet 232 .
- the first valve body 222 includes a cavity 248 for receiving the first valve 224 .
- the first valve 224 controls the amount of hot water and cold water to be mixed and delivered to the spout 204 via the water outlet 232 for output at the spout tip 208 .
- the first valve 224 may be a cartridge-type valve assembly.
- the lower lip 308 of the dome barb 298 has a non-circular shape for fitting into the first inner portion 418 having the same non-circular shape.
- a multi-lobular shape and, in particular, a tri-lobular shape may be used as the non-circular shape.
- the filter bracket assembly 474 includes a bracket body 476 , a printed circuit board (PCB) 478 and a sliding door 480 .
- the filter bracket assembly 474 provides a support for the filter assembly 526 and the filter manifold assembly 402 . In this manner, the filter bracket assembly 474 bears the weight of the filter assembly 526 and the filter manifold assembly 402 .
- the upper connector 560 becomes located in the second inner portion 420 of the cylindrical portion 416 of the manifold body 404 . Additionally, at least a portion of the lower shaft portion 558 of the canister cap 532 becomes aligned with the lower ledge 424 so that the filter canister 530 can be rotated with respect to the lower ledge 424 with the lower shaft portion 558 capable of rotating within the non-circular opening in the lower ledge 424 .
Abstract
A water filtration system includes a faucet assembly and a filtration assembly. The faucet assembly includes a spout assembly having a first water outlet and a second water outlet; a first valve assembly connected to an unfiltered hot water supply and an unfiltered cold water supply and operable to control delivery of unfiltered water to the first water outlet of the spout assembly; and a second valve assembly connected to a filtered water outlet of the filtration assembly and operable to control delivery of filtered water to the second water outlet of the spout assembly. The filtration assembly includes a filter assembly; a filter bracket or mounting assembly for securing the filter assembly to a support surface or structure; and a filter manifold assembly including an unfiltered water inlet for connecting to an unfiltered water supply and the filtered water outlet for connecting to the second valve assembly.
Description
- The present application is being filed as a non-provisional patent application claiming priority/benefit under 35 U.S.C. § 119(e) from U.S. Provisional Patent Application No. 60/757,579 filed on Jan. 10, 2006.
- The invention relates generally to a water filtration system and, more particularly, to a water filter assembly for use in the water filtration system.
- Tap water often includes impurities such as minerals, chlorine, particulates and other contaminants that affect the taste, odor, appearance and health quality of the water. To remove such impurities, water filtration devices are becoming increasingly utilized for filtering tap water.
- In view of the above, a water filtration system is provided that includes a faucet assembly and a filtration assembly. The faucet assembly comprises a spout assembly including a first water outlet and a second water outlet; a first valve assembly for connecting to an unfiltered hot water supply and an unfiltered cold water supply and operable to control delivery of unfiltered water to the first water outlet of the spout assembly; and a second valve assembly for connecting to a filtered water outlet of the filtration assembly and operable to control delivery of filtered water to the second water outlet of the spout assembly. A waterway between the first valve assembly and the first water outlet is separate from a waterway between the second valve assembly and the second water outlet. Accordingly, there is no possibility of cross contamination between the unfiltered water and the filtered water. The filtration assembly comprises a filter assembly; a filter bracket or mounting assembly for securing the filter assembly to a support surface or structure; and a filter manifold assembly including an unfiltered water inlet for connecting to an unfiltered water supply and the filtered water outlet for connecting to the second valve assembly.
- Numerous advantages and features will become readily apparent from the following detailed description of exemplary embodiments, from the claims and from the accompanying drawings.
- The invention as well as embodiments and advantages thereof are described below in greater detail, by way of example, with reference to the drawings in which:
-
FIG. 1 is an exploded perspective view of a water filtration system, according to an exemplary embodiment; -
FIG. 2 is a front view of the water filtration system ofFIG. 1 ; -
FIG. 3 is a right side view of the water filtration system ofFIG. 1 ; -
FIG. 4 is a cross-sectional view of an upper portion of a faucet assembly along line A-A inFIG. 2 ; -
FIG. 5 is an exploded perspective view of a second valve assembly ofFIG. 1 ; -
FIG. 6 is a perspective view of the second valve assembly ofFIG. 5 ; -
FIG. 7 is an exploded perspective view of a filter manifold assembly ofFIG. 1 ; -
FIG. 8 is a cross-sectional view of the filter manifold assembly along line B-B ofFIG. 3 ; -
FIG. 9 is an exploded perspective view of a filter bracket assembly ofFIG. 1 ; -
FIG. 10 is a rear view of the filter bracket assembly ofFIG. 9 ; -
FIG. 11 is a top plan view of the filter bracket assembly ofFIG. 9 ; -
FIG. 12 is a perspective view of a filter assembly ofFIG. 1 ; -
FIG. 13 is a side view of the filter assembly ofFIG. 12 ; -
FIG. 14 is a cross-sectional view of the filter assembly along line C-C inFIG. 13 ; -
FIG. 15 is a side view of a filter assembly, according to another exemplary embodiment; -
FIG. 16 is a cross-sectional view of the filter assembly along line D-D ofFIG. 16 ; -
FIG. 17 is a cross-sectional view of the filter assembly along line E-E ofFIG. 17 ; and -
FIG. 18 is a cross-sectional view of the assembled filtration assembly ofFIG. 1 . - While the general inventive concept is susceptible of embodiment in many different forms, there are shown in the drawings and will be described herein in detail specific embodiments thereof with the understanding that the present disclosure is to be considered as an exemplification of the principles of the general inventive concept. Accordingly, the general inventive concept is not intended to be limited to the specific embodiments illustrated herein.
- Referring to
FIG. 1 , awater filtration system 100 according to an exemplary embodiment is shown as an exploded view. A front view of thewater filtration system 100 is illustrated inFIG. 2 and a right side view of thewater filtration system 100 is illustrated inFIG. 3 .FIG. 4 shows a cross-sectional view of an upper portion of thewater filtration system 100 along line A-A ofFIG. 2 . - The
water filtration system 100 includes afaucet assembly 200 and afiltration assembly 400. Preferably, but not necessarily, thefiltration assembly 400 is installed below thefaucet assembly 200. For example, thefiltration assembly 400 may be installed below a sink deck (not shown) on which thefaucet assembly 200 is mounted. - The
faucet assembly 200 includes aspout assembly 202, afirst valve assembly 220 and asecond valve assembly 280. - The
spout assembly 202 includes aspout 204 extending from aspout hub 206. Thespout 204 includes aspout tip 208, afilter tip 210, aspout tube 212 and afilter tube 214. Thespout tube 212 andfilter tube 214 can be seen inFIG. 4 . - The
spout tip 208 defines a first water outlet through which unfiltered water may flow out of thespout 204. Thefilter tip 210 defines a second water outlet through which filtered water may flow out of thespout 204. Thespout tube 212 defines a first waterway through thespout 204 and thefilter tube 214 defines a second waterway through thespout 204. Preferably, but not necessarily, thefilter tube 214 is disposed within thespout tube 212, as shown inFIG. 4 . In an alternative embodiment, a diverter assembly (not shown) is provided for diverting at least one of said unfiltered water and said filtered water from saidspout assembly 202, for example, to a side spray assembly (not shown). - Preferably, but not necessarily, an
aerator assembly 216 is connected to thespout tip 208 to introduce air into the unfiltered water flowing out of thespout tip 208. Theaerator assembly 216 may reduce splashing, while increasing areas of coverage and wetting efficiency. - Preferably, but not necessarily, a
stream straightener 218 is connected to thefilter tip 210 to straighten the flow of filtered water flowing out of thefilter tip 210. For example, filtered water flowing through thestream straightener 218 becomes laminar, which provides a pleasant look and feel. In one exemplary embodiment, a flow rate of the filtered water discharged through thefilter tip 210 is between 0.9 and 1.1 gallons per minute, inclusive. - The
first valve assembly 220 includes afirst valve body 222, afirst valve 224 and a firstvalve retaining nut 226. Thefirst valve body 222 includes a hotwater supply tube 228, a coldwater supply tube 230 and awater outlet 232. Thefirst valve body 222 includes acavity 248 for receiving thefirst valve 224. Thefirst valve 224 controls the amount of hot water and cold water to be mixed and delivered to thespout 204 via thewater outlet 232 for output at thespout tip 208. Thefirst valve 224 may be a cartridge-type valve assembly. - The
first valve body 222 containing thefirst valve 224 is disposed in thespout hub 206 of thespout assembly 202. O-rings grooves first valve body 222 to form seals between the exterior surface of thefirst valve body 222 and an interior surface of thespout hub 206. The firstvalve retaining nut 226 is connected (e.g., via threaded surfaces) to thefirst valve body 222 to secure thefirst valve 224 and thefirst valve body 222 within thespout hub 206. A bearingwasher 250 may be located between thespout hub 206 and the firstvalve retaining nut 226. - The hot
water supply tube 228 and the coldwater supply tube 230 of thefirst valve body 222 are positioned through afirst opening 252 of anescutcheon 254 and afirst opening 256 of adeck plate assembly 258. Avalve body screw 260 may be used to fasten thefirst valve body 222 to theescutcheon 254. A bearingwasher 262 may be located between thefirst valve body 222 and theescutcheon 254. - The
escutcheon 254 anddeck plate assembly 258 are mounted on a support surface, for example, a sink deck (not shown). In this manner, the hotwater supply tube 228 and the coldwater supply tube 230 may pass through an opening in the sink deck for connection to a hot water supply source and a cold water supply source, respectively. Thedeck plate assembly 258 includes adeck plate 264 located below theescutcheon 254 and a deck seal (not shown) disposed between thedeck plate 264 and an upper surface of the sink deck. A mounting/bracket assembly 266 is disposed below the sink deck to secure thefaucet assembly 200 relative to the sink deck. - A
dome 270 covers the firstvalve retaining nut 226 and connects (e.g., via threaded surfaces) to thefirst valve body 222. Astem 274 located on a top portion of thefirst valve 224 projects through a central opening of the firstvalve retaining nut 226 and a central opening of thedome 270 and into a lower portion of thehandle 272. A handle setscrew 276 is used to secure thehandle 272 to thestem 274. Optionally, aplug button 278 may be used to conceal the handle setscrew 276 for cosmetic reasons. - Accordingly, a user can manipulate the
handle 272 to actuate thefirst valve 224. For example, lifting the handle increases the flow rate of the water delivered to thespout 204, while lowering the handle decreases the flow rate of the water delivered to thespout 204. Additionally, lateral movement of the handle adjusts the temperature of the water delivered to thespout 204 by varying the amount of hot water and cold water being mixed. - As shown in
FIGS. 5 and 6 , thesecond valve assembly 280 includes asecond valve body 282, asecond valve 284 and a secondvalve retaining nut 286. Thesecond valve body 282 includes awater inlet barb 288 and awater outlet barb 290. Thesecond valve 284 is disposed within acavity 292 of thesecond valve body 282. Thesecond valve 284 controls the amount of filtered water delivered from thefiltration assembly 400 to thespout 204 for output at thefilter tip 210. Thesecond valve 284 may be a cartridge-type valve assembly. - The
second valve assembly 280 further includes atube 294 serving as a waterway between thefiltration assembly 400 and thesecond valve 284. Thetube 294 is connected at one end to thewater inlet barb 290, for example, via acrimp sleeve 296. The other end of thetube 294 is connected to adome barb 298, for example, via acrimp sleeve 300. - The
dome barb 298 serves as a filtered water outlet of thefiltration assembly 400. Thedome barb 298 has ahollow dome portion 302 that narrows into ahollow tip portion 304. On an exterior surface of thedome portion 302, anupper lip 306 and alower lip 308 form agroove 310 for receiving an O-ring 312. The O-ring 312 forms a seal between thedome barb 298 and an interior surface of amanifold body 404 of a filter manifold assembly 402 (seeFIG. 7 ), as described below. - Furthermore, a dome
barb retaining nut 314 secures thedome barb 298 to thefilter manifold assembly 402. For example, a threadedportion 316 of the domebarb retaining nut 314 engages an upper threadedportion 436 of themanifold body 404 to secure thedome barb 298 to themanifold assembly 402. In this manner, thetip portion 304 of thedome barb 298 extends through an uppercentral opening 318 of the domebarb retaining nut 314, so that thetip portion 304 can be joined to thetube 294. Thetip portion 304 of thedome barb 298 defines anoutlet end 320 of thedome barb 298, while thedome portion 302 of thedome barb 298 defines aninlet end 322 of thedome barb 298. - Another tube 324 (see
FIG. 1 ) is used to establish a waterway between thesecond valve 224 and thefilter tube 214 in thespout 204. O-rings water outlet barb 288 of thesecond valve assembly 280 and thetube 324 are joined. O-rings tube 324 and thespout assembly 202 are joined. - The
second valve body 282 containing thesecond valve 284 extends through asecond opening 334 in theescutcheon 254. Aspacer 336 may be used, for example, to accommodate the secondvalve retaining nut 286. Preferably, but not necessarily, thespacer 336 includes aspacer opening 340 for accommodating a light-emitting diode (LED) 342 of anLED assembly 344. In this manner, thespacer 336 provides a rigid stop for the secondvalve retaining nut 286, so that the secondvalve retaining nut 286 is not tightened against theLED 342. - The
LED assembly 344 includes the light-emittingdiode 342 and afirst wiring 346. Preferably, but not necessarily, thefirst wiring 346 has afirst connector 348 at one end to facilitate connection to another wiring. The light-emittingdiode 342 may be used to indicate that a filter assembly 526 (seeFIG. 12 ) should be replaced because, for example, its filtering capacity is spent. - A
stem 350 located on a top portion of thesecond valve 284 projects through a central opening of the secondvalve retaining nut 286 and a central opening of thespacer 340 and into a lower portion of thehandle 338. Ahandle screw 352 is used to secure thehandle 338 to thestem 350. Optionally, ahandle cap 354 may be used to conceal thehandle screw 352 for cosmetic reasons. - Accordingly, a user can manipulate the
handle 338 to actuate thesecond valve 284. For example, turning the handle clockwise increases the flow rate of the filtered water delivered to thespout 204, while turning the handle counterclockwise decreases the flow rate of the filtered water delivered to thespout 204. In another exemplary embodiment, an actuator (e.g., a button) is provided in lieu of thehandle 338 to control delivery of the filtered water to thespout 204, wherein the flow rate of the filtered water may be fixed. - As described above, the
faucet assembly 200 allows a user to control delivery of unfiltered water from a water supply source and filtered water from afiltration assembly 400 to asingle spout assembly 202. Thefiltration assembly 400 shown inFIGS. 1-3 will now be described in more detail with reference toFIGS. 7-14 . - The
filtration assembly 400 includes afilter manifold assembly 402, a filter bracket or mountingassembly 474 and afilter assembly 526. - The
filter manifold assembly 402 is shown as an exploded view inFIG. 7 and as a cross-sectional view inFIG. 8 . Thefilter manifold assembly 402 includes amanifold body 404, awater inlet barb 406 and aplunger 408. Thefilter manifold assembly 402 facilitates connection of a water supply source (not shown), thefilter assembly 526 and thesecond valve assembly 280. The water supply source may be a separate water supply source or may be the aforementioned cold water supply source. - Unfiltered water is delivered from the water supply source to the
water inlet barb 406 of thefilter manifold assembly 402 via atube 410. Thetube 410 may be connected to thewater inlet barb 406 by acrimp sleeve 412. - The
manifold body 404 includes aflat base 414 with acylindrical portion 416 formed thereon. Thecylindrical portion 416 is hollow and has a cavity that forms at least a firstinner portion 418, a secondinner portion 420 and a thirdinner portion 422. Alower ledge 424 separates the secondinner portion 420 and the thirdinner portion 422. Anupper opening 426 is formed in thecylindrical portion 416 and alower opening 428 is formed in theflat base 414. Atubular projection 430 extends from thecylindrical portion 416. Thetubular projection 430 forms anouter side opening 432 and aninner side opening 434. Theinner side opening 434 is formed where thetubular projection 430 and thecylindrical portion 416 meet and forms a waterway from thewater inlet barb 406 to the secondinner portion 420 of thecylindrical portion 416 of themanifold body 404. - The
upper opening 426 is for mounting thedome barb 298 to thefilter manifold assembly 402. Thelower opening 428 is for inserting thefilter assembly 526 therein, as described below. Theouter side opening 432 and theinner side opening 434 are for mounting thewater inlet barb 406 and theplunger 408 therein, so as to control the flow of unfiltered water from the water supply source to thefiltration assembly 400. - The upper threaded
portion 436 of thecylindrical portion 416 of themanifold body 404 engages with the threadedportion 316 of the domebarb retaining nut 314 to secure thedome barb 298 within thecylindrical portion 416 of themanifold body 404. In particular, thelower lip 308 of thedome barb 298 rests on anupper ledge 438 between the firstinner portion 418 and the secondinner portion 420, such that the O-ring 312 located in thegroove 310 of thedome barb 298 is housed within the firstinner portion 418 of themanifold body 404. The domebarb retaining nut 314 prevents the O-ring 312 from exiting the firstinner portion 418, thereby maintaining the seal formed by the O-ring 312. Preferably, but not necessarily, thelower lip 308 of thedome barb 298 has a non-circular shape for fitting into the firstinner portion 418 having the same non-circular shape. For example, a multi-lobular shape and, in particular, a tri-lobular shape, may be used as the non-circular shape. - The
flat base 414 of themanifold body 404 is substantially circular. The circumference of alower portion 440 of theflat base 414 is less than the circumference of anupper portion 442 of theflat base 414, so as to form a recessedlip 444 around the outer edge of theflat base 414. A plurality offlanges 446 are disposed on the outer edge of thelower portion 440 of theflat base 414. Eachflange 446 has atooth 448 thereon. Theflanges 446 andteeth 448 are used to connect thefilter manifold assembly 402 to thefilter bracket assembly 474, as described below. - The
water inlet barb 406 has a threadedportion 450 for engaging a threadedportion 452 of thetubular projection 430 of themanifold body 404. Preferably, but not necessarily, adhesive is applied to the threadedportion 450 of thewater inlet barb 406 before it engages the threadedportion 452 of thetubular projection 430. Additionally, an O-ring 454 is positioned on thewater inlet barb 406 and adjacent to the threadedportion 450 of thewater inlet barb 406 to form a seal where thewater inlet barb 406 and thetubular projection 430 are joined. - A
projection 456 is disposed in an interior cavity of thewater inlet barb 406 for engaging oneend 458 of aplunger spring 460. Theother end 462 of theplunger spring 460 is inserted into a recessedend 464 of theplunger 408. In this manner, theplunger spring 460 urges theplunger 408 toward the secondinner portion 420 of thecylindrical portion 416 of themanifold body 404. - More particularly, the
plunger spring 460 urges theplunger 408 into a “closed” position by urging theplunger 408 toward the inner side opening 434 of thetubular projection 430, such that aplunger tip 466 protrudes through theinner side opening 434 and asmooth end 468 of theplunger 408 blocks theinner side opening 434. In this “closed” position, water flowing into thewater inlet barb 406 and thetubular projection 430 cannot enter thecylindrical portion 416 of themanifold body 404. Additionally, an O-ring 470 may be positioned in a groove 472 adjacent to thesmooth end 468 of theplunger 408 to ensure a water-tight seal between theplunger 408 and theinner side opening 434. Theplunger 408 is configured to remain in the “closed” position when a filter is not present in thewater filtration system 100 and to move to an “open” position when a properly configured filter is inserted in thewater filtration system 100, as described below. - The
filter bracket assembly 474 is shown as an exploded view inFIG. 9 , a rear view inFIG. 10 and a top plan view inFIG. 11 . - The
filter bracket assembly 474 includes abracket body 476, a printed circuit board (PCB) 478 and a slidingdoor 480. Thefilter bracket assembly 474 provides a support for thefilter assembly 526 and thefilter manifold assembly 402. In this manner, thefilter bracket assembly 474 bears the weight of thefilter assembly 526 and thefilter manifold assembly 402. - The
bracket body 476 includes anupper portion 482 and alower portion 484. Preferably, but not necessarily, theupper portion 482 is perpendicular to thelower portion 484. Thelower portion 484 has a plurality of mountingholes 486 for mounting thebracket body 476 to a support surface or structure (e.g., a cabinet wall). - A rear surface of the
lower portion 484 includes an area for mounting thePCB 478 thereon. For example, a plurality ofscrews 488 are used to fasten thePCB 478 to thebracket body 476. ThePCB 478 includesmetal contacts 490 and asecond wiring 492. Preferably, but not necessarily, thesecond wiring 492 has asecond connector 494 at one end to facilitate connection to thefirst connector 348 of thefirst wiring 346. - The
metal contacts 490 make contact with abattery 496, which acts as a power source for thePCB 478 and theLED assembly 344. Thesecond wiring 492 connects to thefirst wiring 346 such that if thePCB 478 determines (e.g., based on elapsed time, gallons filtered, etc.) that thefilter assembly 526 needs to be replaced, thePCB 478 causes an electric current to flow to and illuminate theLED 342. In this manner, a user is provided with a visual reminder to replace thefilter assembly 526. - The rear surface of the
lower portion 484 also includes a plurality of wiring recesses 498 for holding and guiding thesecond wiring 492. Additionally, awiring post 500 is provided to anchor thesecond wiring 492 so that a force (e.g., caused by inadvertent contact) on thesecond wiring 492 is distributed to thewiring post 500 and not only to the point where thesecond wiring 492 and thePCB 478 are joined. - A front surface of the
lower portion 484 includes adoor slot 502 for receiving the slidingdoor 480. The slidingdoor 480 includes abattery compartment 504 for holding thebattery 496. Preferably, but not necessarily, thebattery 496 is initially attached (e.g., via adhesive) to the filter assembly 526 (seeFIGS. 1, 2 , 12 and 13) so that a user can install/replace thebattery 496 at the time of installing/replacing thefilter assembly 526. In particular, the user removes thebattery 496 from thefilter assembly 526 and inserts thebattery 496 into thebattery compartment 504 of the slidingdoor 480. Alternatively, thebattery 496 may be integrated into thefilter assembly 526 so that replacing thefilter assembly 526 necessarily includes replacing thebattery 496 without requiring additional effort on the part of the user. - Preferably, but not necessarily, the sliding
door 480 may be readily inserted into and removed from thedoor slot 502 by a user without using any tools. For example, the slidingdoor 480 may friction fit into thedoor slot 502 such that the slidingdoor 480 remains seated in thedoor slot 502 until the user pulls it out. Fully inserting the slidingdoor 480 into thedoor slot 502 causes themetal contacts 490 to contact thebattery 496. - The
upper portion 482 of thebracket body 476 includes anopening 506. Theopening 506 includes anupper wall 508 and alower wall 510 defining the circumference of theopening 506. A circumference of theupper wall 508 is generally greater than the circumference of the recessedlip 444 of theflat base 414 of themanifold body 404 but less than the circumference of theupper portion 442 of theflat base 414 of themanifold body 404. - A plurality of
notches 512 are formed along theupper wall 508 of theopening 506. The thickness of theupper wall 508 decreases in thenotches 512. Adjacent to thenotches 512, theupper wall 508 extends out over thelower wall 510. Arib 514 is formed near a point where thenotch 512 abuts theupper wall 508. Preferably, but not necessarily, the point where thenotch 512 abuts theupper wall 508 is sloped. - A plurality of
ledges 516 project within theopening 506. Preferably, but not necessarily, theledges 516 are evenly spaced within theopening 506, that is every 120 degrees. Preferably, but not necessarily, the thickness of theledges 516 is approximately equal to the height of thelower wall 510. - Each
ledge 516 includes a raisedside wall 518, a raisedstop 520 and asloped portion 522. The raisedside wall 518 is thicker than theledge 516 but does not protrude into theopening 506 as far as theledge 516. The raisedstop 520 is the same thickness as the raisedside wall 518 but protrudes into theopening 506 further than the raisedside wall 518. The raisedstop 520 is located at one end of theledge 516 and the slopedportion 522 is located on the opposite end of theledge 516. Aflange 524 is positioned approximately in the middle of the raisedside wall 518. Theflange 524 is operable to move away from a center of theopening 506 toward theupper wall 508 if sufficient force is applied to theflange 524. Theledges 516 allow thefilter assembly 526 to interface with (and lock into) thefilter bracket assembly 474, as described below. - A perspective view of the
filter assembly 526 is shown inFIG. 12 , a side view of thefilter assembly 526 is shown inFIG. 13 and a cross-sectional view of thefilter assembly 526 is illustrated inFIG. 14 . - Preferably, but not necessarily, the
filter assembly 526 uses a carbon filter and, in particular, an activated charcoal filter. Activated charcoal is charcoal that has been treated with oxygen to open up a multitude of tiny pores between the carbon atoms. The use of special manufacturing techniques results in highly porous charcoals that have very large surface areas. The huge surface area of activated charcoal gives it numerous bonding sites. When certain chemicals pass next to the carbon surface, they attach to the surface and are trapped. Once all of the bonding sites are filled, an activated charcoal filter stops working and should be replaced. - The
filter assembly 526 may be configured to operate across a predetermined range of water pressures. Preferably, but not necessarily, thefilter assembly 526 operates within a water pressure range of 20 to 125 pounds per square inch (psi). Thefilter assembly 526 may be configured to operate across a predetermined range of water temperatures. Preferably, but not necessarily, thefilter assembly 526 operates within a water temperature range of 35 to 100° F. Thefilter assembly 526 may be configured to have a predetermined usage duration, after which thefilter assembly 526 should be replaced. In one exemplary embodiment, thefilter assembly 526 has a usage duration of six months. - The
filter assembly 526 includes atubular filter cartridge 528 disposed in atubular filter canister 530 sealed with acanister cap 532. Unfiltered water enters thefilter canister 530 viainlet ports 534 and passes through aninlet waterway 536. Once inside thefilter canister 530, the unfiltered water fills aspace 584 surrounding thefilter cartridge 528, passes through the filter cartridge 528 (with various chemicals and impurities being removed) and flows radially inward to acentral cavity 538 of thefilter cartridge 528. Accordingly, water in thecentral cavity 538 of thefilter cartridge 528, which is now filtered water, may be discharged out of thefilter canister 530 through anoutlet waterway 540 and out anoutlet port 542. - The
filter cartridge 528 includes afilter cap 544, afilter bottom 546 and thecentral cavity 538. Theoutlet waterway 540 allows filtered water within thecentral cavity 538 to flow through thefilter cap 544 and out theoutlet port 542 disposed in an upper portion of thecanister cap 532. - The
canister cap 532 includes a first raisedportion 548, a second raisedportion 550, alower connector 552, alower lip 554, anupper lip 556, alower shaft portion 558, anupper connector 560, amiddle shaft portion 562 and anupper shaft portion 564. Thecanister cap 532 is hollow such that theoutlet waterway 540 runs through a central opening therein and ends at theoutlet port 542 formed in theupper shaft portion 564 of thecanister cap 532. - Preferably, but not necessarily, the first raised
portion 548 and the second raisedportion 550 are circular. Preferably, but not necessarily, the circumference of the first raisedportion 548 is greater than the circumference of the second raisedportion 550. Preferably, but not necessarily, the height of the first raisedportion 548 is less than the height of the second raisedportion 550. - The
lower connector 552 of thecanister cap 532 is formed on the second raisedportion 550. Thelower connector 552 has a non-circular shape. Preferably, but not necessarily, thelower connector 552 has a multi-lobular shape (e.g., the tri-lobular shape illustrated inFIG. 12 ). Portions of thelower connector 552 extend over the second raisedportion 550 to form overhanging portions 566 (seeFIG. 14 ). - The
lower lip 554 and theupper lip 556 of thecanister cap 532 are formed above thelower connector 552. Preferably, but not necessarily, thelower lip 554 and theupper lip 556 are circular. Preferably, but not necessarily, thelower lip 554 and theupper lip 556 have the same circumference. A groove is defined between thelower lip 554 and theupper lip 556 for receiving an O-ring 568. The O-ring 568 forms a seal between thefilter assembly 526 and thefilter manifold assembly 402 when thefilter assembly 526 is mounted in thewater filtration system 100, as described below. - The
lower shaft portion 558 is formed above theupper lip 556. Preferably, but not necessarily, thelower shaft portion 558 is circular. Preferably, but not necessarily, the circumference of thelower shaft portion 558 is less than the circumference of theupper lip 556. - The
upper connector 560 of thecanister cap 532 is formed on thelower shaft portion 558. Theupper connector 560 has a non-circular shape. Preferably, but not necessarily, theupper connector 560 has a multi-lobular shape (e.g., the tri-lobular shape illustrated inFIG. 12 ). In one exemplary embodiment, theupper connector 560 has a non-circular shape formed from a circular portion and a projection extending from said circular portion that allows the unfiltered water to flow into thetubular filter canister 530. Portions of theupper connector 560 extend over thelower shaft portion 558 to form overhanging portions 570 (seeFIG. 14 ). - The
middle shaft portion 562 and theupper shaft portion 564 are formed above theupper connector 560. Theupper shaft portion 564 includes theoutlet port 542 for outputting filtered water from thefilter assembly 526. Preferably, but not necessarily, themiddle shaft portion 562 and theupper shaft portion 564 are circular. Preferably, but not necessarily, the circumference of themiddle shaft portion 562 is less than the circumference of thelower shaft portion 558. Preferably, but not necessarily, the circumference of theupper shaft portion 564 is less than the circumference of thelower shaft portion 558. Preferably, but not necessarily, themiddle shaft portion 562 and theupper shaft portion 564 have the same circumference. A groove is defined between themiddle shaft portion 562 and theupper shaft portion 564 for receiving an O-ring 572. The O-ring 572 forms a seal between thefilter assembly 526 and the dome barb 298 (in the filter manifold assembly 402) when thefilter assembly 526 is mounted in thewater filtration system 100, as described below. - The
inlet ports 534 of thefilter assembly 526 are disposed between the O-ring 568 and the O-ring 572 such that the O-rings inlet ports 534. Preferably, but not necessarily, the distance from a centerline of the O-ring 568 to a centerline of the O-ring 572 is between 0.670 inches and 1.315 inches, inclusive. In one exemplary embodiment, the distance from the centerline of the O-ring 568 to the centerline of the O-ring 572 is 0.995 inches±0.005 inches. Preferably, but not necessarily, the O-ring 568 has an outer diameter of between 0.981 inches and 1.060 inches, inclusive. In one exemplary embodiment, the O-ring 568 has an (uncompressed) thickness of approximately 0.103 inches and an outer diameter of approximately 1.031 inches. Preferably, but not necessarily, the O-ring 572 has an outer diameter of between 0.603 inches and 0.680 inches, inclusive. In one exemplary embodiment, the O-ring 572 has an (uncompressed) thickness of approximately 0.103 inches and an outer diameter of approximately 0.651 inches. - A
filter assembly 600, according to another exemplary embodiment, may be used in thefiltration assembly 400 and includes structure for protecting an internal filter (e.g., filter cartridge 528) of thefilter assembly 600. A side view of thefilter assembly 600 is shown inFIG. 15 and cross-sectional views of thefilter assembly 600 are shown inFIGS. 16-17 . Except as noted herein, thefilter assembly 600 is substantially the same as thefilter assembly 526 described above. Accordingly, those elements that are the same between the filter assembly 526 (shown inFIGS. 12-14 ) and the filter assembly 600 (shown inFIGS. 15-17 ) have like reference numbers in the drawings and will not be further described in detail. - As in the case of the
filter assembly 526, thefilter assembly 600 includes atubular filter cartridge 528 disposed in atubular filter canister 530 sealed with acanister cap 532. In thefilter assembly 600, amesh wrap 602 surrounds thefilter cartridge 528 to strengthen thefilter cartridge 528 and protect it from damage, for example, during assembly, transit, etc. - Additionally, a plurality of
vertical ribs 604 project from an inner surface of thefilter canister 530. Theribs 604 may be formed integrally with the inner surface of thefilter canister 530. As shown inFIGS. 17-18 , theribs 604 surround thefilter cartridge 528 and itsmesh wrap 602 to limit or prohibit radial movement of thefilter cartridge 528 within thefilter canister 530, thereby further protecting thefilter cartridge 528 from damage, for example, during assembly, transit, etc. Aside from these structural differences, thefilter assembly 600 functions in the same manner as thefilter assembly 526. - In further describing the exemplary embodiments, the filtration assembly 400 (e.g., including the filter assembly 526) connects to the
faucet assembly 200. By way of example, if thefaucet assembly 200 is installed on a sink deck (not shown), thefiltration assembly 400 may be installed below the sink deck (e.g., in a cabinet). -
FIG. 18 shows an assembledfiltration assembly 400. In assembling thefiltration assembly 400, thefilter manifold assembly 402 is connected to thefilter bracket assembly 474. In particular, eachflange 446 on theflat base 414 of themanifold body 404 is aligned with anotch 512 in theupper wall 508 of theupper portion 482 of thebracket body 476, such that themanifold body 404 rests on theupper portion 482 of thebracket body 476 above theopening 506. - Then, by lowering the
flanges 446 into thenotches 512 and turning the manifold body 404 (e.g., counterclockwise) theteeth 448 of theflanges 446 ride over theribs 514 on thelower wall 510 of theopening 506 to connect themanifold body 404 to thebracket body 476. Theledges 516 prevent themanifold body 404 from further counterclockwise rotation. Because theupper wall 508 projects into theopening 506 above theteeth 448, themanifold body 404 cannot be lifted from thebracket body 476 when themanifold body 404 and thebracket body 476 are so connected. Additionally, by virtue of the recessedlip 444, theflat base 414 of themanifold body 404 rests on the raisedside walls 518 so that thefilter bracket assembly 474 supports thefilter manifold assembly 402. - Accordingly, the
dome barb 298 of thesecond valve assembly 280 may be inserted into theupper opening 426 of themanifold body 404 and held therein by the domebarb retaining nut 314. In this manner, thewater inlet barb 406 of thefilter manifold assembly 402 functions as an unfiltered water inlet of thefiltration assembly 400 and thedome barb 298 functions as a filtered water outlet of thefiltration assembly 400. Thetube 410 connects thewater inlet barb 406 to a water supply source (not shown) and thetube 294 carries the filtered water output at thedome barb 298 to thesecond valve 284 of thefaucet assembly 200. - Before or after connection of the
filter manifold assembly 402 and thefilter bracket assembly 474, thebracket body 476 is mounted to a support surface or structure (e.g., a wall of an under-the-sink cabinet). For example, mounting screws 574 (seeFIG. 1 ) are inserted through the mountingholes 486 to secure thebracket body 476 to the support surface or structure. - Prior to mounting the
filter bracket assembly 474, thePCB 478 is secured to the rear surface of thelower portion 484 of thebracket body 476 and thesecond wiring 492 is arranged with respect to thewiring post 500 and wiring recesses 498, as illustrated inFIG. 10 . - The
battery 496, which may initially be attached to an outer surface of the filter canister 530 (seeFIGS. 1, 2 , 12 and 13), is placed in thebattery compartment 504 of the slidingdoor 480. The slidingdoor 480 is then inserted into thedoor slot 502 of thebracket body 476 so that themetal contacts 490 of thePCB 478 contact thebattery 496. Thesecond connector 494 of thesecond wiring 492 may be connected to thefirst connector 348 of thefirst wiring 346 so that thebattery 496 powers and thePCB 478 controls theLED 342 of theLED assembly 344. - With the
filter manifold assembly 402 connected to thefilter bracket assembly 474, the water supply source and thefaucet assembly 200 via thesecond valve 284, thefilter assembly 526 can be installed. The shape and configuration of thecanister cap 532 allows thefilter assembly 526 to interface with thefilter manifold assembly 402 and “lock” into thefilter bracket assembly 474. - The second raised
portion 550 of thecanister cap 532 fits through theopening 506 including theledges 516 of theupper portion 482 of thebracket body 476. The first raisedportion 548 of thecanister cap 532, however, does not fit through theopening 506 including theledges 516. Thelower connector 552 fits through theopening 506 including theledges 516 of thebracket body 476 only if thefilter canister 530 is properly oriented. For example, if thelower connector 552 has a tri-lobular shape as shown inFIG. 12 , thelower connector 552 will fit through theopening 506 including theledges 516 only when intersection points 576 whereadjacent lobes 578 meet are oriented to pass through the spaces along theopening 506 betweenadjacent ledges 516. - Once the
lower connector 552 is properly oriented, thefilter canister 530 should be inserted into thebracket body 476 so that an upper surface of the first raisedportion 548 of thecanister cap 532 contacts the lower surface of theledges 516 of theupper portion 482 of thebracket body 476. In this case, thelower connector 552 should be disposed in theopening 506 above thelower wall 510 such that no portion of thelower connector 552 overlaps any of theledges 516. - The raised stops 520 of the
ledges 516 contact thelobes 578 of thelower connector 552 to prevent thefilter canister 530 from significantly rotating in a clockwise direction. Rotating thefilter canister 530 in a counterclockwise direction causes a lower surface of thelower connector 552 to rotate along theledges 516 so that the intersection points 576 of thelobes 578 depress theflanges 524 of theledges 516 in order to rotate past theflanges 524. - Once the intersection points 576 have passed the
flanges 524, theflanges 524 return to their original positions so as to resist clockwise rotation of thefilter canister 530 within theopening 506 in theupper portion 482 of thebracket body 476. Additionally, the raised stops 520 of theledges 516 contact thelobes 578 of thelower connector 552 to prevent further counterclockwise rotation of thefilter canister 530. Accordingly, thefilter canister 530 is considered to be installed and in a “locked” position relative to thefilter bracket assembly 474. - To uninstall the
filter assembly 526 from thefilter bracket assembly 474, thefilter canister 530 must be rotated in a clockwise direction with sufficient force to overcome the resistance of theflanges 524 against the intersection points 576 of thelobes 578. - As the
filter assembly 526 is being installed in thefilter bracket assembly 474, thefilter assembly 526 is also interfacing with thefilter manifold assembly 402 connected thereto (seeFIG. 15 ). In particular, those portions of thecanister cap 532 of thefilter assembly 526 that are disposed above thelower connector 552 are inserted into the filter manifold assembly 402 (including the dome barb 298) as thefilter assembly 526 is installed in thefilter bracket assembly 474. - The
lower ledge 424 between the secondinner portion 420 and the thirdinner portion 422 located inside thecylindrical portion 416 of themanifold body 404 forms a non-circular (e.g., a multi-lobular and, in particular, a tri-lobular) opening between the secondinner portion 420 and the thirdinner portion 422. Each of theupper shaft portion 564, the O-ring 572, themiddle shaft portion 562, theupper connector 560 and thelower shaft portion 558 formed on thecanister cap 532 are capable of fitting through the non-circular opening in thelower ledge 424. None of theupper lip 556, the O-ring 568 and thelower lip 554 are capable of fitting through the non-circular opening in thelower ledge 424. - For the
upper connector 560 to fit through the non-circular opening in thelower ledge 424, the intersection points 580 whereadjacent lobes 582 of theupper connector 560 meet must be oriented to correspond to the non-circular opening in thelower ledge 424. The intersection points 580 of theupper connector 560 are substantially aligned with the intersection points 576 of thelower connector 552. If thefilter manifold assembly 402 is connected to thefilter bracket assembly 474, as described above, then rotating thefilter canister 530 so that thelower connector 552 will fit through theopening 506 and theledges 516 in theupper portion 482 of thebracket body 476 of thefilter bracket assembly 474 will ensure that theupper connector 560 is properly aligned to pass through the non-circular opening in thelower ledge 424 of themanifold body 404 of thefilter manifold assembly 402. Otherwise, theupper connector 560 will not fit through the non-circular opening in thelower ledge 424. - Once the
filter canister 530 is properly aligned and is lifted so that thelower connector 552 passes through theopening 506 and theledges 516 in theupper portion 482 of thebracket body 476 of thefilter bracket assembly 474, those portions of thecanister cap 532 located above theupper lip 556 pass through the non-circular opening in thelower ledge 424. Theupper lip 556, thelower lip 554 and the O-ring 568 disposed between theupper lip 556 and thelower lip 554 become located in the thirdinner portion 422 of thecylindrical portion 416 of themanifold body 404, directly below thelower ledge 424. In this manner, theupper lip 556, thelower lip 554 and the O-ring 568 form a seal between thefilter assembly 526 and thefilter manifold assembly 402 below theinlet ports 534 of theupper connector 560. - The
upper shaft portion 564, themiddle shaft portion 562 and the O-ring 572 disposed between theupper shaft portion 564 and themiddle shaft portion 562 pass through aninlet end 322 of thedome barb 298 and become disposed inside ahollow dome portion 302 of thedome barb 298, which is held in the firstinner portion 418 of thecylindrical portion 416 of themanifold body 404 by the domebarb retaining nut 314. In this manner, theupper shaft portion 564, themiddle shaft portion 562 and the O-ring 572 form a seal between thefilter assembly 526 and the filter manifold assembly 402 (housing the dome barb 298) above theinlet ports 534 of theupper connector 560. - As the
filter canister 530 is installed, theupper connector 560 becomes located in the secondinner portion 420 of thecylindrical portion 416 of themanifold body 404. Additionally, at least a portion of thelower shaft portion 558 of thecanister cap 532 becomes aligned with thelower ledge 424 so that thefilter canister 530 can be rotated with respect to thelower ledge 424 with thelower shaft portion 558 capable of rotating within the non-circular opening in thelower ledge 424. - Accordingly, when the
lower connector 552 of thecanister cap 532 is rotated counterclockwise to install thefilter assembly 526 into the “locked” position relative to thefilter bracket assembly 474, theupper connector 560 also rotates counterclockwise within the secondinner portion 420 of thecylindrical portion 416 of themanifold body 404. Preferably, but not necessarily, a lower surface of theupper connector 560 rests on an upper surface of thelower ledge 424 after thefilter canister 530 is rotated counterclockwise. Preferably, but not necessarily, a lower surface of thedome barb 298 at theinlet end 322 rests on an upper surface of theupper connector 560. - The
upper connector 560 rotates counterclockwise within the secondinner portion 420 of thecylindrical portion 416 of themanifold body 404 until the raised stops 520 of theledges 516 of thebracket body 476 halt rotation of thelower connector 552. Accordingly, when thefilter canister 530 has been installed into the “locked” position in thefilter bracket assembly 474, one of the intersection points 580 of thelobes 582 of theupper connector 560 contacts theplunger tip 466 projecting through the inner side opening 434 of thetubular projection 430 of themanifold body 404. - By contacting the
plunger tip 466, theupper connector 560 causes theplunger spring 460 to compress and theplunger 408 to move away from theinner side opening 434. Consequently, thesmooth end 468 of theplunger 408 no longer blocks the inner side opening 434 of thetubular projection 430 of themanifold body 404. In this “open” position, water flowing in through thewater inlet barb 406 and into thetubular projection 430 can enter thecylindrical portion 416 of themanifold body 404. In particular, unfiltered water from the water supply source can flow through the inner side opening 434 of thetubular projection 430 of themanifold body 404 and into the secondinner portion 420 of thecylindrical portion 416 of themanifold body 404 where theupper connector 560 is located. The O-ring 568 forms a seal below the secondinner portion 420 and the O-ring 572 forms a seal above the secondinner portion 420 to prevent the unfiltered water from leaking out of the secondinner portion 420. - The unfiltered water in the second
inner portion 420 surrounds theupper connector 560 in the secondinner portion 420 and enters thefilter assembly 526 through theinlet ports 534 on theupper connector 560. The unfiltered water then flows through theinlet waterway 536 and into thespace 584 surrounding thefilter cartridge 528. The unfiltered water then passes through thefilter cartridge 528 which causes various chemicals and impurities to be removed from the water. Accordingly, as the unfiltered water flows through thefilter cartridge 528 it becomes filtered water. As the water is filtered, it flows into thecentral cavity 538 of thefilter cartridge 528. The filtered water may be discharged from thecentral cavity 538 of thefilter cartridge 528 through anoutlet waterway 540 and out anoutlet port 542 for delivery to thefaucet assembly 200, for example, in response to a user manipulating thehandle 338. - When the
lower connector 552 of thecanister cap 532 is rotated clockwise to uninstall the filter assembly 526 (e.g., to replace a spent filter assembly 526), theupper connector 560 rotates clockwise within the secondinner portion 420 of thecylindrical portion 416 of themanifold body 404. Because of this clockwise rotation of theupper connector 560, none of the intersection points 580 of thelobes 582 of theupper connector 560 contact theplunger tip 466. - With no intersection points 580 contacting the
plunger tip 466, theplunger spring 460 extends to urge theplunger tip 466 further through the inner side opening 434 of thetubular projection 430 of themanifold body 404 until thesmooth end 468 of theplunger 408 blocks theinner side opening 434. As a result, when thefilter canister 530 is moved into the “unlocked” position in thefilter bracket assembly 474, unfiltered water is prevented from flowing into thecylindrical portion 416 of themanifold body 404. Accordingly, the flow of unfiltered water through thewater filtration system 100 requires the presence of a properly configuredfilter assembly 526 and that thefilter assembly 526 be properly installed. - In the
water filtration system 100, according to the exemplary embodiments set forth above, separate valve assemblies allow a user to selectively obtain either filtered or unfiltered water at thesame spout 204 of thefaucet assembly 200. For example, filtered water may be selected for drinking or cooking, while unfiltered water may be selected for cleaning. Additionally, both filtered and unfiltered water may flow from the spout at the same time. - The above description of specific embodiments has been given by way of example. From the disclosure given, those skilled in the art will not only understand the general inventive concept and its attendant advantages, but will also find apparent various changes and modifications to the structures and methods disclosed. It is sought, therefore, to cover all such changes and modifications as fall within the spirit and scope of the general inventive concept, as defined by the appended claims, and equivalents thereof.
Claims (28)
1. A filter assembly for use in a water filtration system, said filter assembly comprising:
a filter cartridge for filtering water; and
a filter canister for housing said filter cartridge,
wherein said filter canister includes at least one non-circular connector for interfacing with a manifold assembly.
2. The filter assembly of claim 1 , wherein said at least one non-circular connector is operable to allow said water to flow into said filter canister.
3. The filter assembly of claim 1 , wherein said at least one non-circular connector includes a multi-lobal connector having a plurality of lobes.
4. The filter assembly of claim 3 , wherein at least one of said lobes includes an inlet port for said water to flow into said filter canister.
5. The filter assembly of claim 1 , wherein said at least one non-circular connector is located between a first circular portion of said filter canister and a second circular portion of said filter canister,
wherein said first circular portion includes a groove for receiving a first sealing member, and
wherein said second circular portion includes a groove for receiving a second sealing member.
6. The filter assembly of claim 5 , wherein a distance between a centerline of said first sealing member and a centerline of said second sealing member is between 0.670 inches and 1.315 inches, inclusive.
7. The filter assembly of claim 5 , wherein an outer diameter of said first sealing member is between 0.603 inches and 0.680 inches, inclusive.
8. The filter assembly of claim 5 , wherein an outer diameter of said second sealing member is between 0.981 inches and 1.060 inches, inclusive.
9. The filter assembly of claim 1 , wherein said at least one non-circular connector includes a circular portion and a projection extending from said circular portion for allowing said water to flow into said filter canister.
10. A filter assembly for use in a water filtration system, said filter assembly comprising:
a filter cartridge for filtering water; and
a filter canister for housing said filter cartridge,
wherein said filter canister includes at least one non-circular connector for interfacing with a mounting assembly.
11. The filter assembly of claim 10 , wherein said mounting assembly includes a mounting bracket for securing said filter assembly to a support surface, and
wherein said mounting bracket has an opening for interfacing with said at least one non-circular connector.
12. The filter assembly of claim 11 , wherein said opening has an inner wall,
wherein a plurality of ledges project into said opening from said inner wall, and
wherein said ledges interface with said at least one non-circular connector.
13. The filter assembly of claim 12 , wherein said at least one non-circular connector includes a multi-lobal connector having a plurality of lobes,
wherein said multi-lobal connector includes a plurality of edges, with each edge being formed where two adjacent lobes meet, and
wherein a lower surface of each edge contacts an upper surface of a corresponding one of said ledges if said filter canister is installed in said mounting assembly.
14. A filter assembly for use in a water filtration system, said filter assembly comprising:
a filter cartridge for filtering water; and
a filter canister for housing said filter cartridge,
wherein said filter canister includes at least one non-circular connector for interfacing with at least one of a manifold assembly and a mounting assembly.
15. The filter assembly of claim 14 , wherein said at least one non-circular connector includes a multi-lobal connector having a plurality of lobes.
16. The filter assembly of claim 15 , wherein said multi-lobal connector is a tri-lobal connector having three lobes.
17. The filter assembly of claim 14 , wherein said filter canister is sealed with a canister cap and said at least one non-circular connector is formed on said canister cap.
18. The filter assembly of claim 14 , wherein said filter cartridge is wrapped in a mesh sleeve.
19. The filter assembly of claim 14 , wherein a plurality of ribs project from an inner surface of said filter canister to support said filter cartridge within said filter canister.
20. The filter assembly of claim 14 , wherein said filter canister includes a first non-circular connector for interfacing with said manifold assembly and a second non-circular connector for interfacing with said mounting assembly.
21. The filter assembly of claim 20 , wherein said first non-circular connector is a first multi-lobal connector and said second non-circular connector is a second multi-lobal connector.
22. The filter assembly of claim 21 , wherein a number of lobes of said first multi-lobal connector is the same as a number of lobes of said second multi-lobal connector.
23. The water filtration assembly of claim 22 , wherein said lobes of said first multi-lobal connector are aligned with said lobes of said second multi-lobal connector.
24. The filter assembly of claim 20 , wherein said manifold assembly includes an unfiltered water inlet for connecting to an unfiltered water supply and a filtered water outlet for connecting to a faucet assembly, and
wherein said first non-circular connector is operable to interface with said manifold assembly.
25. The water filtration assembly of claim 24 , wherein said manifold assembly includes an interior opening for said unfiltered water entering said manifold assembly via said unfiltered water inlet to flow through to said filter assembly.
26. The water filtration assembly of claim 25 , wherein said manifold assembly includes a plunger and a spring for urging said plunger against said interior opening so that said plunger blocks said interior opening and a tip of said plunger protrudes through said interior opening, and
wherein said spring is compressed to prevent said plunger from blocking said interior opening if said first non-circular connector interfaces with said manifold assembly.
27. The filter assembly of claim 20 , wherein said mounting assembly includes a mounting bracket operable to secure said filter assembly to a support surface, and
wherein said second non-circular connector is operable to interface with said mounting bracket.
28. The filter assembly of claim 27 , wherein said mounting bracket has an opening and said opening has an inner wall,
wherein a plurality of ledges project into said opening from said inner wall,
wherein said second non-circular connector includes a plurality of lobes,
wherein an edge is formed where each two adjacent lobes meet, and
wherein said second non-circular connector is configured so that a lower surface of each edge contacts an upper surface of a corresponding one of said ledges if said filter canister is installed in said mounting assembly.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/651,148 US20070199879A1 (en) | 2006-01-10 | 2007-01-09 | Water filter assembly |
Applications Claiming Priority (2)
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US75757906P | 2006-01-10 | 2006-01-10 | |
US11/651,148 US20070199879A1 (en) | 2006-01-10 | 2007-01-09 | Water filter assembly |
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US20070199879A1 true US20070199879A1 (en) | 2007-08-30 |
Family
ID=38236324
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Application Number | Title | Priority Date | Filing Date |
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US11/651,148 Abandoned US20070199879A1 (en) | 2006-01-10 | 2007-01-09 | Water filter assembly |
US11/651,259 Abandoned US20070199886A1 (en) | 2006-01-10 | 2007-01-09 | Water filtration system |
US11/651,342 Expired - Fee Related US8562831B2 (en) | 2006-01-10 | 2007-01-09 | Water filter assembly |
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US11/651,259 Abandoned US20070199886A1 (en) | 2006-01-10 | 2007-01-09 | Water filtration system |
US11/651,342 Expired - Fee Related US8562831B2 (en) | 2006-01-10 | 2007-01-09 | Water filter assembly |
Country Status (2)
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US (3) | US20070199879A1 (en) |
CA (3) | CA2573486A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10675573B2 (en) | 2015-01-22 | 2020-06-09 | Culligan International Company | Remote control faucet filter system |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10675573B2 (en) | 2015-01-22 | 2020-06-09 | Culligan International Company | Remote control faucet filter system |
WO2022229927A1 (en) * | 2021-04-30 | 2022-11-03 | Whirlpool Corporation | Filter assembly |
US11806648B1 (en) | 2021-04-30 | 2023-11-07 | Whirlpool Corporation | Filter assembly |
Also Published As
Publication number | Publication date |
---|---|
CA2573486A1 (en) | 2007-07-10 |
US20070199880A1 (en) | 2007-08-30 |
US20070199886A1 (en) | 2007-08-30 |
CA2573448A1 (en) | 2007-07-10 |
CA2573465C (en) | 2014-11-18 |
CA2573465A1 (en) | 2007-07-10 |
US8562831B2 (en) | 2013-10-22 |
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Legal Events
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AS | Assignment |
Owner name: MOEN INCORPORATED, OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BORS, MARK S.;KORB, YAAKOV;LOSCHELDER, TODD C.;AND OTHERS;REEL/FRAME:020065/0502;SIGNING DATES FROM 20070418 TO 20070425 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |