US3776460A - Spray nozzle - Google Patents
Spray nozzle Download PDFInfo
- Publication number
- US3776460A US3776460A US00259649A US3776460DA US3776460A US 3776460 A US3776460 A US 3776460A US 00259649 A US00259649 A US 00259649A US 3776460D A US3776460D A US 3776460DA US 3776460 A US3776460 A US 3776460A
- Authority
- US
- United States
- Prior art keywords
- fluid
- chamber
- wall
- guide wall
- guide
- 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.)
- Expired - Lifetime
Links
- 239000007921 spray Substances 0.000 title claims abstract description 35
- 239000012530 fluid Substances 0.000 claims abstract description 57
- 238000006424 Flood reaction Methods 0.000 claims description 2
- 230000006870 function Effects 0.000 claims description 2
- 230000003993 interaction Effects 0.000 claims description 2
- 230000009471 action Effects 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000010355 oscillation Effects 0.000 description 5
- 238000005192 partition Methods 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- 230000010349 pulsation Effects 0.000 description 3
- 239000003973 paint Substances 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002169 hydrotherapy Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
- F15C1/00—Circuit elements having no moving parts
- F15C1/22—Oscillators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/08—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape of pulsating nature, e.g. delivering liquid in successive separate quantities ; Fluidic oscillators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
- B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
- B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
- B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
- B05B1/3426—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels emerging in the swirl chamber perpendicularly to the outlet axis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/206—Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]
- Y10T137/2087—Means to cause rotational flow of fluid [e.g., vortex generator]
- Y10T137/2109—By tangential input to axial output [e.g., vortex amplifier]
- Y10T137/2115—With means to vary input or output of device
Definitions
- the direction taken by a power stream can be controlled by interracting control jets connected to the fluid zone immediately downstream from the power stream nozzle.
- control jets By varying or controlling the relative strengths of the control jets it is possible to selectively cause the power stream to attach to different ones of the divergent wall surfaces forming the nozzle outlet chamber. In this manner it is possible to control or switch the path taken by the power stream.
- the path taken by the power stream is controlled or varied by pressure resistances periodically generated in the nozzle outlet chamber. These pressure resistances reduce the velocity of the flowing stream and its ability to attach onto one of the divergent nozzle wall surfaces; the slowly moving fluid does not produce a sufficient vacuum force on the attaching wall to maintain the attachment. As a result, the power stream is caused to at least partially detach from the wall and thereby change direction.
- the directional changes are cuased to take place at a rate of about 200 times per minute, whereby the fluid output takes on a pulsating or oscillating character.
- the output from the fluidic switch is selectively directed through two paths to a vortex swirl chamber having a nozzle discharge opening in one of its end walls.
- the liquid power stream enters the swirl chamber in a tangential direction, thereby generating a swirling liquid flow that is centrifugally exhausted through the nozzle discharge opening as a relatively wide angle conical spray.
- the liquid power stream enters the swirl chamber in a generally radial direction, thereby generating a lessened swirl in the chamber; the liquid exits from the chamber as a relatively narrow angle conical spray.
- the relationship of the fluidic switch and swirl chamber is such that the conical discharge spray oscillates rapidly between the wide angle cone pattern and the narrow angle cone pattern, for example at an oscillating frequency of about 200 cycles per minute.
- FIG. 1 is a sectional view taken on line 1-1 in FIG. 2 and illustrating a structure in accordance with the invention.
- FIG. 2 is a sectional view on line 22 in FIG. 1.
- Nozzle structure 8 for generating a pulsating conical stream of fluid from a nonpulsating stream of supply fluid, the divergence or cone angle of the pulsating stream being varied in an oscillating fashion.
- Nozzle structure 8 comprises two wall members 9 and 11 suitably secured together, as by screws or adhesives (not shown) to define a water passage system.
- Wall member 11 takes the form of a flat plate.
- Wall member 9 takes the form of a thickened block having a lower flat face sealingly engaged with the upper face of wall 11; recesses are formed in block 9 to define the water passage system.
- Water supply member 10 has a rotary fit in a circular cavity 13 in block 9, whereby nozzle structure 8 can be manually rotated around the axis of member 10 while maintaining a water flow connection between the supply passage 15 and fluidic nozzle 17.
- Nozzle 17 comprises two divergent wall surfaces 18 and 20 which cooperatively define a switching chamber 22. Positioned within the switching chamber is an adjustable flow diverter partition 24 of generally triangular plan cross section; the partition subdivides chamber 22 into two separate flow passages 25 and 27. A pivot pin 26 is affixed to the partition and to an external actuating knob 28, the arrangement being such that manual rotation of the knob causes the tip area 30 of partition 24 to move toward or away from nozzle surface 18, thereby effectively varying the size of passage 25.
- Wall surface 18 is connected to one edge of the main nozzle port 19 by a lateral wall surface 21; wall surface 20 connects directly with the other edge of nozzle port 19.
- a small atmospheric air passage 23 connects with surface 20 near the point where surface 20 joins port 19.
- the water discharging through port 19 will attach to surface 18 and thus flow through passage 25; little or no fluid will flow through passage 27.
- the step or offset at 21 provides a potential low-pressure zone along wall surface 18, while no such low pressure zone is formed along surface 20 because atmospheric passage 23 permits air to be drawn into the zone alongside surface 20 to thereby maintain a relatively high pressure condition.
- the relatively low pressure on surface 18, coupled with the relatively high pressure on surface 20, causesthe mainstream fluid to attach to wall surface 18.
- passage 25 Should a back pressure be developed in passage 25 the fluid will flood space 22, and the flow rate along surface 18 will be reduced. The reduced flow rate will have a lessened capability for producing a vacuum force on wall surface 18 so that the flowing stream will at least partly detach from surface 18. Under such conditions the fluid will divide between passages 25 and 27; i.e., part of the fluid will flow through passage 25 and the remainder will flow through passage 27.
- the structure thus far described constitutes a fluidic switch having an oscillating output manifested as a periodic change in the flow pattern, between an attached mode confined to passage 25 and a detached mode apportioned to passages 25 and 27.
- an oscillation between the two modes was achieved at a frequency of about 200 cycles per minute.
- Passage 25 of the described fluidic switch tangentially connects to a vortex swirl chamber 34 of generally circular contour.
- Passage 27 connects to the swirl chamber 34 along a radial or chord-like direction opposing the direction of swirl designated by numeral 50.
- the fluid flow When the fluid flow is confined to passage 25 the fluid enjoys a circumferential swirling motion 50 in chamber 34; eventually the fluid exits through the circular discharge port 36 as a spiralling conical spray having a relatively wide cone angle designated by letter A.
- the swirl in chamber 34 is at least partially removed so that the fluid issues from port 36 as a relatively narrow cone angle spray designated by letter B.
- the change between the spiralling wide angle spray mode and the non-spiralling narrow angle spray mode is effected by pressure changes that automatically occur during operation of the device.
- all of the fluid enters vortex chamber 34 through tangential passage 25 and exits from outlet port 36 as a spinning conical spray.
- the flow is spinning or whirling rapidly in vortex chamber 34, so that eventually the resultant centrifugal forces build up a back pressure to a value where the flow of fluid through passage 25 is throttled to cause chamber 22 to flood; the whirling action in chamber 34 keeps the fluid in the chamber for a prolonged time instead of permitting it to rapidly exhaust through port 36.
- passage 25 tends to trap the flowing stream to produce the back pressure effect.
- the resultant flooding in space 22 destroys the attachment of the fluid jet on wall 18.
- the fluid flow then divides substantially equally through the tangential passage 25 and the radial passage 27.
- the flow of fluid through tangential passage 25 is reduced, and the flow of fluid through radial passage 27 mixes with the fluid flowing around vortex chamber 34 to further reduce the rotating velocity of the fluid in the vortex chamber to effectively decrease the centrifugal pressure forces and increase the total flow through port 36.
- Chamber 22 is thereby at least partially drained, and the fluid jet reattaches itself to wall 18 to start a new cycle.
- the exit flow from outlet port 36 has a pattern which is not as divergent as the pattern achieved when the flow is attached to wall 18.
- the fan-out or divergence of the fluid flow issuing from outlet port 36 can be controlled by turning knob 28 to move the tip area 30 toward or away from wall 18.
- tip area 30 is adjusted closer to wall 18, it will divert more fluid through passage 27 during the non-swirl mode of operation. Accordingly the spray pattern will tend to oscillate essentially between the relatively narrow cone spray pattern B and the essentially solid jet stream C.
- the illustrated pattern angles A, B and C are approximately representative of the angles obtained in actual practice.
- the actual patterns are influenced by the size of port 36 and the contour of the deflector surface 38.
- deflector surface 38 When deflector surface 38 is not used the spray tends to have a wider angle than that illustrated in the draw- The spray angle also tends to be influenced by the position of diverter plate 40.
- the narrow pattern tends to be more divergent; i.e., to resemble pattern B rather than pattern C.
- the oscillation frequency (number of switches in spray pattern angle per unit time period) is affected by several factors, including the fluid supply pressure and the size of port 36. In general the frequency tends to be higher as the supply pressure is increased and port 36 is made larger (within limits).
- the oscillatory change in spray cone angle is believed to be caused by instantaneous pressure changes occurring in and/or near the whirl chamber.
- a conventional pressure transducer and electrical read-out equipment I have been able to obtain a pen-chart record of instantaneous pressures in the whirl chamber. These pressure readings show cyclic pressure changes ranging from 60 to 750 cycles per minute. Since the spray oscillation frequency is believed to vary directly with the frequency of the pressure change, the readings are interpreted as an indication of spray oscillation frequencies in the 60-750 cycle per minute range. It is believed that lower frequencies, possibly as low as 10 cycles per minute, could probably be obtained by choice of parameters and some experimentation.
- the device is formed to include the illustrated circular island 42.
- this island helps to guide and define the vortical flow to achieve a more pronounced pulsation or oscillation.
- the island may possibly act as a flow interrupter or backstop to promote energy interchange between the fluid coming from passage 27 and the swirling fluid, thus producing a more effective disturbance of the swirl during switchover from the wide spray mode A to the narrow spray mode B.
- the atmospheric passage 23 may have some incidental advantage as an aeration mechanism.
- the air that is drawn through passage 23 mixes with the water particles to provide a partially aerated stream; a plug valve 55 may be provided to control the aeration efi'ect and the magnitude of the pulsation.
- plug valve 55 When plug valve 55 is closed off, the pulsations cease, and the flow from the shower emerges as cone C.
- Additional aeration ports 44 may be provided in island 42 or other areas of the device.
- the invention provides a pulsating flow that gives a physical sensation somewhat akin to hydrotherapy.
- the pulsating action is also beneficial in that it provides greater coverage to the sprayed areas.
- this device instead of a hollow spray cone (as is achieved with many arrangements) this device covers both the outer annular spray area (pattern A) and the inner central spray area (pattern B or C).
- the device operates over a relatively wide range of supply pressures, from about 4 p.s.i. up to more than p.s.i.
- a spray device comprising:
- a fluidic switch having a nozzle opening, and first and second guide walls extending from the opening in divergent relationship to guide the fluid after its discharge from said opening; the first guide wall being connected to the nozzle opening in such fashion that said wall functions as an attachment surface for the nozzle fluid; the second guide wall hav- 5 ing an atmospheric port adjacent said opening, whereby said second guide wall is precluded from acting as a fluid attachment surface;
- first guide wall having a tangential connection with the vortex chamber to promote a swirling condition therein;
- second guide wall having a connection with the swirl chamber whereby fluid flowing along said second wall tends to obstruct the swirling movement as the fluid flows into the chamber;
- said vortex chamber having an axially oriented port operable to discharge fluid from the chamber; said discharge port being sized to produce a back pressure in the vortex chamber when the chamber fluid is in a swirling condition, whereby the fluid floods the zone defined by the divergent guide walls, thereby producing a swirl-disrupting flow along the second guide wall; the flow area defined by the divergent guide walls being sufficient that continued flow thereacross rapidly restores the swirling condition in the vortex chamber, whereby the fluid output from the discharge port takes the form of an oscillating output of varying cone angle.
- vortex chamber is provided with an axially oriented circular island having a surface in registry with the flow path defined by the second guide wall to promote interaction between the swirling fluid and the swirl-obstruction fluid.
- first guide wall connects to one edge of the nozzle opening by means of an offset wall that provides a low pressure zone along the surface of the first guide wall.
Abstract
Description
Claims (5)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US25964972A | 1972-06-05 | 1972-06-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3776460A true US3776460A (en) | 1973-12-04 |
Family
ID=22985791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00259649A Expired - Lifetime US3776460A (en) | 1972-06-05 | 1972-06-05 | Spray nozzle |
Country Status (1)
Country | Link |
---|---|
US (1) | US3776460A (en) |
Cited By (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3892363A (en) * | 1974-08-05 | 1975-07-01 | Ass Mills Inc | Attachment for hydrotherapy bath |
USRE30350E (en) * | 1977-12-20 | 1980-07-29 | Associated Mills, Inc. | Selectable multiple-nozzle showerhead |
US4748029A (en) * | 1985-06-26 | 1988-05-31 | Frigoscandia Contracting Ab | Method for controlling the flow of a product onto a conveyor belt |
US5076327A (en) * | 1990-07-06 | 1991-12-31 | Robert Bosch Gmbh | Electro-fluid converter for controlling a fluid-operated adjusting member |
WO1993024237A1 (en) * | 1992-05-29 | 1993-12-09 | Cambridge Consultants Limited | Method and apparatus for producing a liquid spray |
US20020040942A1 (en) * | 2000-07-21 | 2002-04-11 | Srinath Dharapuram N. | Fluidic SPA Nozzles with dual operating modes and methods |
US6497375B1 (en) * | 2000-02-22 | 2002-12-24 | Bowles Fluidics Corporation | Fluidic nozzle with multiple operating modes |
WO2004047997A3 (en) * | 2002-11-26 | 2004-08-19 | Tippetts Fountains Ltd | Display fountain, system, array and wind detector |
US7070129B1 (en) * | 1999-06-24 | 2006-07-04 | Bowles Fluidics Corporation | Spa tub fluidic nozzles |
US20090312680A1 (en) * | 2008-06-11 | 2009-12-17 | Jtl Enterprises Inc. (A Delaware Corporation) | Apparatus for dry hydro-therapy body massage with fluid spray control device |
US20110042092A1 (en) * | 2009-08-18 | 2011-02-24 | Halliburton Energy Services, Inc. | Alternating flow resistance increases and decreases for propagating pressure pulses in a subterranean well |
US20110099728A1 (en) * | 2009-11-02 | 2011-05-05 | Lg Electronics Inc. | Method for washing and washing machine |
US20110186300A1 (en) * | 2009-08-18 | 2011-08-04 | Dykstra Jason D | Method and apparatus for autonomous downhole fluid selection with pathway dependent resistance system |
US8104697B2 (en) | 2008-03-19 | 2012-01-31 | Petrovic John E | Fluid spray control device |
US20120255739A1 (en) * | 2011-04-11 | 2012-10-11 | Halliburton Energy Services, Inc. | Selectively variable flow restrictor for use in a subterranean well |
US8616290B2 (en) | 2010-04-29 | 2013-12-31 | Halliburton Energy Services, Inc. | Method and apparatus for controlling fluid flow using movable flow diverter assembly |
US8684094B2 (en) | 2011-11-14 | 2014-04-01 | Halliburton Energy Services, Inc. | Preventing flow of undesired fluid through a variable flow resistance system in a well |
US8739880B2 (en) | 2011-11-07 | 2014-06-03 | Halliburton Energy Services, P.C. | Fluid discrimination for use with a subterranean well |
US8851180B2 (en) | 2010-09-14 | 2014-10-07 | Halliburton Energy Services, Inc. | Self-releasing plug for use in a subterranean well |
US20140311189A1 (en) * | 2011-04-14 | 2014-10-23 | Lg Electronics Inc. | Washer |
US8950502B2 (en) | 2010-09-10 | 2015-02-10 | Halliburton Energy Services, Inc. | Series configured variable flow restrictors for use in a subterranean well |
US8985483B2 (en) | 2012-01-24 | 2015-03-24 | John E. Petrovic | Adjustable trajectory spray nozzles |
US8991506B2 (en) | 2011-10-31 | 2015-03-31 | Halliburton Energy Services, Inc. | Autonomous fluid control device having a movable valve plate for downhole fluid selection |
US9127526B2 (en) | 2012-12-03 | 2015-09-08 | Halliburton Energy Services, Inc. | Fast pressure protection system and method |
US9260952B2 (en) | 2009-08-18 | 2016-02-16 | Halliburton Energy Services, Inc. | Method and apparatus for controlling fluid flow in an autonomous valve using a sticky switch |
US9291032B2 (en) | 2011-10-31 | 2016-03-22 | Halliburton Energy Services, Inc. | Autonomous fluid control device having a reciprocating valve for downhole fluid selection |
US9404349B2 (en) | 2012-10-22 | 2016-08-02 | Halliburton Energy Services, Inc. | Autonomous fluid control system having a fluid diode |
US9506320B2 (en) | 2011-11-07 | 2016-11-29 | Halliburton Energy Services, Inc. | Variable flow resistance for use with a subterranean well |
US9695654B2 (en) | 2012-12-03 | 2017-07-04 | Halliburton Energy Services, Inc. | Wellhead flowback control system and method |
US11739517B2 (en) | 2019-05-17 | 2023-08-29 | Kohler Co. | Fluidics devices for plumbing fixtures |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US553727A (en) * | 1896-01-28 | tan sickle | ||
US3267946A (en) * | 1963-04-12 | 1966-08-23 | Moore Products Co | Flow control apparatus |
US3510112A (en) * | 1964-07-09 | 1970-05-05 | Knut L Winquist | Liquid atomizer |
US3509775A (en) * | 1967-06-01 | 1970-05-05 | Singer General Precision | Pneumatic linear displacement pickoff |
US3595479A (en) * | 1969-10-01 | 1971-07-27 | Bowles Fluidics Corp | Fluidically controlled display fountain |
-
1972
- 1972-06-05 US US00259649A patent/US3776460A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US553727A (en) * | 1896-01-28 | tan sickle | ||
US3267946A (en) * | 1963-04-12 | 1966-08-23 | Moore Products Co | Flow control apparatus |
US3510112A (en) * | 1964-07-09 | 1970-05-05 | Knut L Winquist | Liquid atomizer |
US3509775A (en) * | 1967-06-01 | 1970-05-05 | Singer General Precision | Pneumatic linear displacement pickoff |
US3595479A (en) * | 1969-10-01 | 1971-07-27 | Bowles Fluidics Corp | Fluidically controlled display fountain |
Cited By (59)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3892363A (en) * | 1974-08-05 | 1975-07-01 | Ass Mills Inc | Attachment for hydrotherapy bath |
USRE30350E (en) * | 1977-12-20 | 1980-07-29 | Associated Mills, Inc. | Selectable multiple-nozzle showerhead |
US4748029A (en) * | 1985-06-26 | 1988-05-31 | Frigoscandia Contracting Ab | Method for controlling the flow of a product onto a conveyor belt |
US5076327A (en) * | 1990-07-06 | 1991-12-31 | Robert Bosch Gmbh | Electro-fluid converter for controlling a fluid-operated adjusting member |
WO1993024237A1 (en) * | 1992-05-29 | 1993-12-09 | Cambridge Consultants Limited | Method and apparatus for producing a liquid spray |
US7070129B1 (en) * | 1999-06-24 | 2006-07-04 | Bowles Fluidics Corporation | Spa tub fluidic nozzles |
US6497375B1 (en) * | 2000-02-22 | 2002-12-24 | Bowles Fluidics Corporation | Fluidic nozzle with multiple operating modes |
US20020040942A1 (en) * | 2000-07-21 | 2002-04-11 | Srinath Dharapuram N. | Fluidic SPA Nozzles with dual operating modes and methods |
US6729564B2 (en) * | 2000-07-21 | 2004-05-04 | Bowles Fluidics Corporation | Fluidic SPA Nozzles with dual operating modes and methods |
WO2004047997A3 (en) * | 2002-11-26 | 2004-08-19 | Tippetts Fountains Ltd | Display fountain, system, array and wind detector |
GB2411700A (en) * | 2002-11-26 | 2005-09-07 | Tippetts Fountains Ltd | Display fountain, system, array and wind detector |
GB2411700B (en) * | 2002-11-26 | 2007-04-04 | Tippetts Fountains Ltd | Display fountain, system, array and wind detector |
GB2395758B (en) * | 2002-11-26 | 2007-04-11 | Flow Systems Design Ltd | Display fountain system array and wind detector |
US8104697B2 (en) | 2008-03-19 | 2012-01-31 | Petrovic John E | Fluid spray control device |
US20090312680A1 (en) * | 2008-06-11 | 2009-12-17 | Jtl Enterprises Inc. (A Delaware Corporation) | Apparatus for dry hydro-therapy body massage with fluid spray control device |
US8348872B2 (en) | 2008-06-11 | 2013-01-08 | Jtl Enterprises Inc. | Apparatus for dry hydro-therapy body massage with fluid spray control device |
US9394759B2 (en) | 2009-08-18 | 2016-07-19 | Halliburton Energy Services, Inc. | Alternating flow resistance increases and decreases for propagating pressure pulses in a subterranean well |
US8657017B2 (en) | 2009-08-18 | 2014-02-25 | Halliburton Energy Services, Inc. | Method and apparatus for autonomous downhole fluid selection with pathway dependent resistance system |
US20110186300A1 (en) * | 2009-08-18 | 2011-08-04 | Dykstra Jason D | Method and apparatus for autonomous downhole fluid selection with pathway dependent resistance system |
US9080410B2 (en) * | 2009-08-18 | 2015-07-14 | Halliburton Energy Services, Inc. | Method and apparatus for autonomous downhole fluid selection with pathway dependent resistance system |
US9109423B2 (en) | 2009-08-18 | 2015-08-18 | Halliburton Energy Services, Inc. | Apparatus for autonomous downhole fluid selection with pathway dependent resistance system |
US8931566B2 (en) | 2009-08-18 | 2015-01-13 | Halliburton Energy Services, Inc. | Method and apparatus for autonomous downhole fluid selection with pathway dependent resistance system |
US8893804B2 (en) | 2009-08-18 | 2014-11-25 | Halliburton Energy Services, Inc. | Alternating flow resistance increases and decreases for propagating pressure pulses in a subterranean well |
US8714266B2 (en) | 2009-08-18 | 2014-05-06 | Halliburton Energy Services, Inc. | Method and apparatus for autonomous downhole fluid selection with pathway dependent resistance system |
US9260952B2 (en) | 2009-08-18 | 2016-02-16 | Halliburton Energy Services, Inc. | Method and apparatus for controlling fluid flow in an autonomous valve using a sticky switch |
US20110042092A1 (en) * | 2009-08-18 | 2011-02-24 | Halliburton Energy Services, Inc. | Alternating flow resistance increases and decreases for propagating pressure pulses in a subterranean well |
JP2013509281A (en) * | 2009-11-02 | 2013-03-14 | エルジー エレクトロニクス インコーポレイティド | Washing machine |
US9121125B2 (en) | 2009-11-02 | 2015-09-01 | Lg Electronics Inc. | Method for washing and washing machine |
US20110100070A1 (en) * | 2009-11-02 | 2011-05-05 | Lg Electronics Inc. | Washing machine |
JP2013509282A (en) * | 2009-11-02 | 2013-03-14 | エルジー エレクトロニクス インコーポレイティド | Washing method and washing machine |
US8997290B2 (en) | 2009-11-02 | 2015-04-07 | Lg Electronics Inc. | Method for washing and washing machine |
US20110099727A1 (en) * | 2009-11-02 | 2011-05-05 | Lg Electronics Inc. | Method for washing and washing machine |
US20110099728A1 (en) * | 2009-11-02 | 2011-05-05 | Lg Electronics Inc. | Method for washing and washing machine |
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JP2013509283A (en) * | 2009-11-02 | 2013-03-14 | エルジー エレクトロニクス インコーポレイティド | Washing method and washing machine |
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