US20080250562A1 - Articulating bed frame - Google Patents
Articulating bed frame Download PDFInfo
- Publication number
- US20080250562A1 US20080250562A1 US11/842,593 US84259307A US2008250562A1 US 20080250562 A1 US20080250562 A1 US 20080250562A1 US 84259307 A US84259307 A US 84259307A US 2008250562 A1 US2008250562 A1 US 2008250562A1
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- United States
- Prior art keywords
- assembly
- main frame
- section
- bed frame
- leg section
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- 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.)
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
- A61G7/015—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame divided into different adjustable sections, e.g. for Gatch position
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
- A47C20/04—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination
- A47C20/041—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination by electric motors
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
- A47C20/08—Head -, foot -, or like rests for beds, sofas or the like with means for adjusting two or more rests simultaneously
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
- A61G7/012—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame raising or lowering of the whole mattress frame
Abstract
An articulating bed frame includes a main frame; a back section; first and second linkage assemblies, each being pivotally connected at spaced apart first and third ends to the back section and pivotally connected at opposing, spaced apart and respective second and fourth ends to the main frame; an upper leg section; a third linkage assembly pivotally connected at opposing fifth and sixth ends to the upper leg section and the main frame; a support link assembly connecting the upper leg section for sliding and pivotal movement with the main frame; a seat section pivotally connected at opposing ends to the back section and the upper leg section; a lower leg section pivotally connected to the upper leg section and freely supported atop a forward end of the main frame; a drive assembly connected between the back section and the third linkage assembly and operable to extend and retract to articulate the bed frame between a fully reclined position and a fully inclined position; and, a side rail assembly connected to the main frame and including a handle having a down position and an up position and including connection apparatus for permitting articulation between the down and up positions.
Description
- This application is a continuation-in-part of pending U.S. patent application Ser. No. 10/359,087 filed Feb. 5, 2003.
- The present invention relates to bed frames, and more particularly to an articulating bed frame for home, nursing home and hospital healthcare.
- Beds and bed frames constructed for home, nursing and hospital healthcare environments provide for articulation of the frame to tilt one or more sections for the patient's comfort and/or care. With the push of a button or lever, the back section can be made to tilt between a completely flat, reclined position and a forward, inclined position, or one or more leg sections may be made to bend or tilt between a generally flat and horizontal position and a drawn-up, bent position. More particularly, since most beds are positioned against a wall, some beds have back sections that hug the wall when inclined (raised), which provides additional space at the foot end. This also allows patients to stay within reach of bed side cabinets. To accomplish this, the existing designs of such bed frames typically comprise multiple sliding frames that retract with pivoting linkages that are heavy and costly to manufacture. In addition, the movement of such members may define a path that is larger than the underlying mattress footprint, which thus takes up more space unnecessarily.
- What is desired is a bed frame that is lighter, cheaper to manufacture, has a smaller operating footprint, and still hugs the wall when inclined.
- The present invention provides a bed frame that may be articulated between a generally flat and horizontal position and a back-inclined position, all while maintaining a substantially wall-hugging configuration at the head of the bed frame.
- Generally speaking, an articulating bed frame includes a main frame; a back section; first and second linkage assemblies, each being pivotally connected at spaced apart first and third ends to the back section and pivotally connected at opposing, spaced apart and respective second and fourth ends to the main frame; an upper leg section; a third linkage assembly pivotally connected at opposing fifth and sixth ends to the upper leg section and the main frame; a support link assembly connecting the upper leg section for sliding and pivotal movement with the main frame; a seat section pivotally connected at opposing ends to the back section and the upper leg section; a lower leg section pivotally connected to the upper leg section and freely supported atop a forward end of the main frame; a drive assembly connected between the back section and the third linkage assembly and operable to extend and retract to articulate the bed frame between a fully reclined position and a fully inclined position; and, a side rail assembly connected to the main frame and including a handle having a down position and an up position and including connection apparatus for permitting articulation between the down and up positions.
- It is an object of the present invention to provide an improved bed with articulating side rail for hospital, home and nursing care applications.
- Further objects and advantages will become apparent from the following description of the preferred embodiment.
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FIG. 1 is a top, perspective view of an articulatingbed frame 10 in accordance the present invention and shown in the fully inclined position. -
FIG. 2 is a bottom view of the articulatingbed frame 10 ofFIG. 1 and shown in the fully reclinedposition 5. -
FIG. 3 is a side view of the articulatingbed frame 10 ofFIG. 2 . -
FIG. 4 is a bottom view of the articulatingbed frame 10 ofFIG. 1 and shown in a partiallyinclined position 6. -
FIG. 5 is a side view of the articulatingbed frame 10 ofFIG. 4 . -
FIG. 6 is a bottom view of the articulatingbed frame 10 ofFIG. 1 and shown in the fully inclined position 7. -
FIG. 7 is a side view of the articulatingbed frame 10 ofFIG. 6 . -
FIG. 8 is a top view of the articulatingbed frame 10 ofFIG. 6 . -
FIG. 9 is a side, cross-sectional view of the articulatingbed frame 10 ofFIG. 8 taken along the lines 9-9 and viewed in the direction of the arrows. -
FIG. 10 is a top, perspective view of the articulatingbed frame 10 ofFIG. 1 with several components removed for viewing clarity. -
FIG. 11 is a bottom, perspective view of the articulatingbed frame 10 ofFIG. 1 . -
FIG. 12 is an enlarged, side view of the central portion of articulatingbed frame 10 ofFIG. 9 . -
FIG. 13 is a front, elevational view of the articulatingbed frame 10 ofFIG. 3 and shown in the transport position. -
FIG. 14 is a side, elevational of the articulatingbed frame 10 ofFIG. 13 . -
FIG. 15 is side, elevational view of an articulatingbed frame 150 in accordance with another embodiment of the present invention. -
FIG. 16 is a cross-sectional view of the articulatingbed frame 150 ofFIG. 15 taken along the arrows 16-16, viewed in the direction of the arrows and withoutfoot board 148. -
FIG. 17 is a top view of theradial arms rocker arms bed frame 150 ofFIG. 15 . -
FIG. 18 is a side, elevational view of an articulatingbed frame 250 in accordance another embodiment of the present invention, withbed frame 10 shown in the fully reclinedposition 5 andside rail assembly 255 shown in thedown position 278. -
FIG. 19 is a perspective view of the lower portion ofside rail assembly 255 ofFIG. 18 , showingmounting bracket 260 ofbed frame 250 as mounted tomain frame 11. -
FIG. 20 is a perspective view of the central portion ofside rail assembly 255 ofFIG. 18 , showingconnector brackets -
FIG. 21 is a side, elevational view of articulatingbed frame 250 ofFIG. 18 , withbed frame 10 shown in the fully reclinedposition 5 andside rail assembly 255 shown in theintermediate position 318. -
FIG. 22 is a side, elevational view of articulatingbed frame 250 ofFIG. 18 , withbed frame 10 shown in theintermediate position 6 andside rail assembly 255 shown in theintermediate position 318. -
FIG. 23 is a side, elevational view of articulatingbed frame 250 ofFIG. 18 , withbed frame 10 shown in the fully inclined position 7 andside rail assembly 255 shown in theintermediate position 318. -
FIG. 24 is a side, elevational view of articulatingbed frame 250 ofFIG. 18 , withbed frame 10 shown in theintermediate position 6 andside rail assembly 255 shown in thedown position 278. -
FIG. 25 is a side, elevational view of articulatingbed frame 250 ofFIG. 18 , withbed frame 10 shown in the fully inclined position 7 andside rail assembly 255 shown in theup position 279. -
FIGS. 26-30 show alternative embodiments of the linkages a through d ofside rail assembly 255. -
FIG. 31 is a side view of an alternative embodiment of the side railposition control assembly 266 ofside rail assembly 255 ofFIG. 18 , which aprotractor plate 336. - For the purposes of promoting an understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, and any alterations or modifications in the illustrated device, and any further applications of the principles of the invention as illustrated therein are contemplated as would normally occur to one skilled in the art to which the invention relates.
- Referring to
FIGS. 1-7 , there is shown an articulatingbed frame 10 in accordance with the present invention.Bed frame 10 can be articulated between a fully reclinedposition 5 shown inFIGS. 2 and 3 and a fully inclined position 7 shown inFIGS. 7 and 8 , as well as all positions in between, such asintermediate position 6 shown inFIG. 5 .Bed frame 10 generally includes amain frame 11, aback section 12, aseat section 13, anupper leg section 14, alower leg section 15 and an articulation drive assembly indicated generally at 16 (FIG. 5 ). Sections 12-15 are pivotally interconnected along parallel,horizontal axes - The fully reclined position, as used herein, refers to the condition where all the bed sections members (
back 12,seat 13,upper leg 14 and lower leg 15) are juxtaposed in a generally horizontal and co-planar position, as shown inFIG. 3 . The fully inclined position, as used herein, refers to the condition where the same bed sections, through their pivotal interconnections, are tilted relative to each other as far from the fully reclined position as their linkages will allow, thereby inclining theback section 12 and drawing in theleg sections FIG. 7 , to form a slightly inverted “V” shape. Thus, the fully reclined and fully inclined positions represent the extremes of articulation ofbed frame 10. Alternative embodiments contemplate that bed sections 12-15 may be in different positions for these extremes than are shown herein. For example, in one embodiment, the fully reclined position may haveback section 12 pivoted beyond horizontal so that the patient's head is lowered below the rest of his body. - Referring to
FIGS. 9-11 ,main frame 11 is a generally rectangular frame of tubular metal construction having opposing front andrear rails opposing side rails upstanding linkage brackets drive mounting brackets roller mounting brackets Roller mounting brackets rollers shaped roller channels side rails rear rails -
Back section 12 is a generally rectangular frame of tubular metal construction and includes upper, middle andlower crossbars opposing side arms pivot head braces lower crossbars braces side arms section 12 withmain frame 11.First linkage assembly 47 includes a pair oflinkages pins braces Linkages linkage brackets pins Second linkage assembly 48 includes upper andlower pivot tubes connector tubes Upper pivot tube 55 is pivotally connected to, between and at the lower portions ofbraces pins Lower pivot tube 56 is pivotally connected to and between the side rails 24 and 25 ofmain frame 11 by appropriate means such aspins Main frame 11, backsection 12 andlinkage assemblies position 5 ofFIG. 3 and the fully inclined position 7 shown inFIG. 7 . - A back
section cover plate 63 is fixedly secured to and atopcrossbars side arms cover plate 63 providing additional structural support forback section 12. A plurality of holes withgrommets 64 are provided incover plate 63 for ventilation. - Also connected with
back section 12 is a first drive linkage assembly 65 (FIGS. 2 and 9 ).Assembly 65 includes a pair ofdrive links lower crossbar 40 ofback section 12 and extend downwardly therefrom for connection with thedrive assembly 16 as will be described herein. - Like back
section 12,lower leg section 15 is a generally rectangular frame of tubular metal construction and includes upper, middle andlower crossbars connector brackets lower crossbar 72. At their rearward ends, roller bars 75 and 76 are connected to the lower ends ofhanger links Links connector brackets middle crossbar 71. Forwardly,lower leg section 15, and more particularly, roller bars 75 and 76, ride uponrollers rollers assembly 85. Alternative embodiments are contemplated wherein track and guideassembly 85 includes low friction slides instead ofrollers lower leg section 15 with track members mounted to or made as a part ofmain frame 11. Other embodiments contemplate any suitable complementary track and guide arrangement to permitlower leg section 15 to ride along the forward end ofmain frame 11 either freely (as shown in herein) or with some releasable restriction to permit lower leg section to be easily folded over ataxis 21 for transport, as described herein. Rearwardly,lower leg section 15 is pivotally connected toupper leg section 14 bypins cover plate 63, a lowersection cover plate 86 with holes andgrommets 64 is fixedly secured tocrossbars side rails -
Upper leg section 14 comprises arear crossbar 87 extending between opposing side rails 88 and 89, respectively. Athird linkage assembly 90 connects the front end ofupper leg section 14 tomain frame 11 and includes upper andlower pivot tubes 91 an 92 that are rigidly connected to each other by a pair of opposingconnector tubes Upper pivot tube 91 is pivotally connected to and between side rails 88 and 89 bypins Lower pivot tube 92 is pivotally connected to and between main frame side rails 24 and 25 bypins support link assembly 101 includes a pair of opposingsupport links rear crossbar 87. At the bottom of eachsupport link roller channels roller channels links roller channels upper leg sections upper leg section 14 is pivotally connected toseat section 13 bypins section cover plate 109 has a generally C-shaped cross-section and is fixedly secured tocrossbar 87 andside rails - Referring to
FIGS. 9 , 10 and 12,seat section 13 generally comprises opposing side rails 111 and 112 that are pivotally connected at their front ends bypins pins seat section plate 119 with holes andgrommets 64 and a generally C-shaped cross-section is fixedly secured toside rails Plate 119, in addition to providing a seat surface, also provides additional structural support forseat section 13. - Referring to
FIGS. 10 and 12 , adrive actuator assembly 120 is connected withseat section 13. Driveactuator assembly 120 includes backingplates rod 123, handles 124 and 125, C-shapedconnection plate 126, and aspring 127. Backingplates side rails Rod 123 extends betweenside rails side rails plates plates Handles rod 123, as shown.Connection plate 126 is generally C-shaped and is fixedly secured torod 123 roughly midway betweenside rails front bumpers connection plate 126, roughly in line withrod 123, as shown inFIG. 12 .Seat plate 119 includesflanges plate 119, andspring 127 is stretched between and secured toflanges rod 123 andbumpers rod 123 andconnection plate 126 all rotate as a unit about the axis ofrod 123. Such rotation causesbumpers spring 127, and driveactuator assembly 120 is thus biased to stay in the neutral position shown inFIG. 12 . - Drive
assembly 16 includes any apparatus suitable for providing linear motion to drivelinks drive linkage assembly 65. In the embodiment ofFIGS. 1-13 ,drive assembly 16 includes aworm gear assembly 132 and agear reduction box 133.Worm gear assembly 132 includes a threaded shaft or “worm” 134 and afollower nut 135 that is driven by the rotation ofworm 134 between a rearward position (shown at 136,FIG. 12 ) and a forward position (shown in phantom at 137). A motor (not shown) is mounted to supportplate 138 and, throughgear reduction box 133, drivesworm 134. Drive links 66 and 67 are connected at their lower ends to follower nut 135 (a first connection end of drive assembly 16) by appropriate means such as thumb screws (one of two screws on opposing sides ofworm gear assembly 132 shown at 146 inFIG. 5 ). Driveassembly 16 is supported at its rearward end (a second connection end of drive assembly 16) bysupport rods reduction box 133 and at the opposite end to a correspondingdrive mounting bracket connection plate 126 controls the operation ofdrive assembly 16 through connection with atransducer 141 that is supported by a mountingbracket 142 extending down fromseat section plate 119. Aconnection element 144 transmits the motion ofconnection plate 126 totransducer 141, and the transducer output is relayed to gearreduction box 133 by a suitable cable 143 where it governs the operation of the motor andgear reduction box 133. - In operation from the fully inclined position 7 (
FIGS. 8-12 ), pulling either handle 124 or 125 rotatesrod 123 andconnection plate 126 which, throughtransducer 141, actuates drive assembly 16 to rotateworm 134 and movefollower nut 135 and the drive links 66 and 67 forwardly. Bed frame sections 12-15 thereby move relative to each other andmain frame 11 toward the fully reclinedposition 5 until either handles 124 and 125 are released or untilbed frame 10 reaches the fully reclinedposition 5. Ifhandles position 5,spring 127 biases driveactuator assembly 120 back to the neutral position whereupon driveassembly 16 is switched off. Alternatively, should handles 124 or 125 be held in rearwardly rotated positions, wherebyworm 134 continues to be forced to rotate,follower nut 135 is constructed such that it will stop moving once a physical limit is reached, either because bed frame sections 12-15 are physically unable to articulate any farther, or because a physical element associated withworm gear assembly 132 precludes further translation offollower nut 135 alongworm 134. This removes the possibility of damaging the bed frame elements, particularly thedrive assembly 16 and motor (not shown). Reversing the handle input (i.e. now pushing thehandles drive assembly 16 in the opposite direction, andbed frame 10 is articulated toward the fully inclined position 7. The same limiting elements are provided for limiting movement offollower nut 135 beyond a predefined extreme relating to the fully inclined position 7. Alternative embodiments are contemplated wherein the travel limit offollower nut 135 is defined by an electronic, optical audio or similar sensor of any appropriate type that senses the position offollower nut 135 and electronically and/or mechanically stops the rotation ofworm 134 and/or the translation offollower nut 135. - Of particular importance in the configuration and assembly of
bed frame 10 is the location ofupper crossbar 38 ofback section 12 relative to therear rail 23 ofmain frame 11. Asbed frame 11 is articulated between the fully reclined and fully inclined positions, the rearward end of back section 12 (which is upper crossbar 38) stays substantially vertically aligned with the rear end of main frame 11 (which is rear rail 23).Bed frame 10 thus exhibits a significant wall-hugging feature whereby, during articulation toward the fully inclined position (FIG. 7 ), the forward end of back section 12 (lower cross bar 40) is drawn rearwardly, while the rearward end (upper crossbar 38) moves very little horizontally. In relative terms, during articulation from the fully reclined to the fully inclined position, the rearward end (38) ofback section 12 is desired to move horizontally forward about 25% or less of what the forward end (40) ofback section 12 moves horizontally rearward. Consequently, a person lying onbed frame 10 will remain in substantially the same horizontal position relative to a bed table or cabinet that is typically located to one side and at the head of the bed. As used herein, the fully inclined and reclined positions are meant to include this wall-hugging feature whereby the rearward end of back section 12 (here, upper crossbar 38) stays substantially vertically aligned with the rearward end of bed frame 10 (here, rear rail 23), as shown inFIGS. 2-7 . In practice, it may be desirable for the rearward end (38) to move at least slightly forwardly during articulation from the fully reclined position so that the rearward end (38) ofback section 12 does not contact any structures that may be protruding from a wall behind the bed, such as a picture or medical equipment or connections therefor. - Alternative embodiments are contemplated wherein the lengths and positionment of the various linkages are modified slightly, the result of which is that, during articulation from the fully reclined to the fully inclined position, the rearward end (38) of
back section 12 moves horizontally forward slightly greater than 25% of what the forward end (40) ofback section 12 moves horizontally rearward. While the configuration of the present invention permits such adjustment, it is preferred that the ratio of forward movement of the rearward end (38) to the rearward movement of forward end (40) be maintained at about 1 to 4 or less than 1 to 4. - With
support link assembly 101 mounted at its bottom end for substantially horizontally linear travel inroller channels axis 20, and thus substantially adjacent to the forward end ofseat section 13, the forward end ofseat section 13 moves in a substantially horizontal path. Likewise, the bottom end of firstdrive linkage assembly 65 moves in a substantially horizontally linear path, and the top end is mounted substantially adjacent to the rear end ofseat section 13. Consequently, asbed frame 10 is articulated between the fully reclined and fully inclined positions,seat section 13 remains substantially horizontal. Also, as shown inFIGS. 2-7 , the greatest overall length ofbed frame 10 occurs in the fully reclined position (FIGS. 2 and 3 ). Asbed frame 10 is articulated toward the fully inclined position, the overall length ofbed frame 10 is reduced. In addition, the rearmost extent ofbed frame 10 is defined bymain frame 11, which does not move during articulation. Therefore, ifbed frame 10 is positioned against a wall at the rear or head of the bed frame, articulation of the bed frame will not result in contact ofback section 12 with the wall unless the entire bed frame is moved. - An easily removable headboard (not shown) and
foot board 149 are provided as desired to maintain the position of a mattress (not shown) that is positioned atop articulatingbed frame 10. Side rails (not shown) are also provided in a known manner, as appropriate. Verticallyadjustable caster sleeves 148 are connected tomain frame 11 and are sized and shaped to receive casters (not shown). - Referring to
FIGS. 13 and 14 , articulatingbed frame 10 can be folded for ease of transport. The transport position is achieved by first removing any headboard or foot board (as necessary), and then by foldinglower leg section 15 about 180 degrees from its position in the fully reclinedposition 5, aboutaxis 21, over and against upper leg section 14 (andseat section 13, depending on the length of lower leg section 15). In the transport position, articulatingbed frame 10 is more compact and may be tilted on end, as shown, for movement by hand or with the use of a two-wheel cart or similar device. Alternative embodiments are contemplated whereinlower leg section 15 is folded somewhat less than 180 degrees and to a position not quite againstupper leg section 13. While this may be necessary to accommodate some other feature ofbed frame 10, such as a particular control apparatus or restraint device, it is preferred thatleg frame 15 be able to be folded all the way over and flat againstupper leg frame 14 for transport. - Referring to
FIG. 15 there is shown an articulatingbed frame 150 in accordance with an alternative embodiment of the present invention. Likebed frame 10, articulatingbed frame 150 includes substantially the same components, such as pivotally interconnected back, seat, upper leg andlower leg sections main frame 157 by first, second andthird linkage assemblies support link assembly 161. A firstdrive linkage assembly 163 includes a pair of drive links (one of two, generally side-by-side links shown at 164) that are each rigidly mounted tolower crossbar 166 ofback section 151 and that extends downwardly therefrom for pivotal connection with a first,output end 167 of anarticulation drive assembly 168. A seconddrive linkage assembly 169 includes a pair of drive links (one of two side-by-side links shown at 170) that are each rigidly mounted toupper pivot tube 172 ofthird linkage assembly 160 and that extends downwardly therefrom for pivotal connection with a second, mountingend 174 ofarticulation drive assembly 168.Articulation drive assembly 168 is thus essentially pivotally connected tothird linkage assembly 160 at point somewhat spaced betweenupper leg section 153 andmain frame 157.Articulation drive assembly 168, likedrive assembly 16 ofbed frame 10, articulatesbed frame 150 between a fully reclined position (like that shown inFIGS. 2 and 3 ) and a fully inclined position ofFIG. 15 (and like that shown inFIGS. 6 and 7 ), as well as all positions in between. In one embodiment,articulation drive assembly 168 comprises alinear actuator 175 model LA31 from Linak U.S. Inc of Louisville, Ky.Linear actuator 175 has a thrust maximum push of 1349 lbf, a thrust maximum pull of 899 lbf and a stroke length of up to 11.82 inches. Withlinear actuator 175 actuated to the extended position, as shown,bed frame 150 is articulated to the fully inclined position. Whenlinear actuator 175 is actuated to the retracted position (not shown),bed frame 150 will be articulated to the fully reclined positioned (like that shown inFIGS. 2 and 3 ). Actuation oflinear actuator 175 is controlled by a user with a suitable keypad or similar device (not shown) electrically connected withlinear actuator 175 in a known manner. Power is provided tolinear actuator 175 through a standard 110v wall socket. -
Linear actuator 175 may be any device that is connectable at opposing ends between first and seconddrive linkage assemblies drive linkage assemblies bed frame 150 between the fully reclined and fully inclined positions described and shown herein. - The
leg section 154 ofbed frame 150 also differs frombed frame 10 in that there are no roller bars 75 and 76 norhangar links roller mounting brackets 176 and 177 (FIGS. 15 and 16 ) extend up higher frommain frame 157 thanroller mounting brackets bed frame 10. Also, there is nomiddle crossbar 71 in the lower leg section, but insteadlower leg section 154 includescentral rails lower crossbars side rails Lower leg section 154, and more particularly,central rails rollers roller mounting brackets -
Bed frame 150 is also provided with a vertical adjustment apparatus for raising and loweringmain frame 157 relative to theground 188, the apparatus generally including a bedlift drive assembly 190 and four identical castor assemblies, one at each corner of main frame 157 (two shown at 191 and 192). Castor assemblies such as those shown at 191 and 192 are well known and each generally includes asupport arm 194 and acontrol arm 195 pivotally mounted at a proximal end tomain frame 157 byseparate axles arm separate pivot points single castor leg 201. This configuration permitscastor leg 201 to maintain a constant vertical angle as it rises and falls relative tomain frame 157. The pivotal connection ofsupport arm 194 tomain frame 157 is achieved bysupport arm 194 being fixedly connected toaxle 196.Axle 196 generally extends between opposing bed frame side rails (one of two opposing and parallel rails shown at 202) and is held for rotation at each such side rail by a bracket (one of two brackets shown at 203) that is fixed to its respective side rail (202). There are thus two such axles—arear axle 196 and afront axle 207—extending between the opposing side rails ofbed frame 157.Rear axle 196 connects the left,rear support arm 194 of bedlift castor assembly 191 with the right, rear support arm (not shown) of the right, rear castor assembly (not shown), the two rear support arms thus rotating as a unit about the axis ofaxle 196. Likewise, at the front ofbed frame 10, the support arms (one of two shown at 208) of front bed lift castor assemblies (one of two shown at 192) are fixedly tied together to rotate as a unit by and withaxle 207. - A
radial arm 209 extends rigidly and radially fromaxle 196, between opposing side rails (one shown at 202). Referring toFIGS. 15 and 17 , a pair ofradial arms sleeve 214 that is mounted for rotation aboutfront axle 207. Apin 215 is connected to extend between the distal ends ofarms long connection link 216 is pivotally connected between the distal end ofradial arm 209 andarm 212, as shown. A pair ofrocker arms front axle 207, just outside ofradial arms limit pin 220 is connected to extend between the distal ends ofrocker arms radial arms FIG. 15 . A limit catch 222 is pivotally mounted at pin 223 to abracket 224, which is fixedly mounted tofront rail 225 ofmain frame 157. Limit catch 222 defines ahook 228 extending generally rearwardly of pin 223 and defines afoot pedal 229 extending generally downwardly and forwardly of pin 223. Limit catch 222 is configured so that depression offoot pedal 229 from the front will pivot limit catch 222 about pin 223, wherebyhook 228 will hook up underlimit pin 220 and preventrocker arms FIG. 15 . - Bed
lift drive assembly 190 has a mountingend 231 that is mounted to abracket 232 that is fixed to acrossbar 233 that extends between the opposing side rails (one shown at 202) ofmain frame 157.Drive assembly 190 has anoutput spindle 235 that is operable to extend and retract relative to the mountingend 231, and the distal,output end 236 ofspindle 235 is pivotally mounted to pin 215, which is connected to the distal ends ofradial arms articulation drive assembly 168, bedlift drive assembly 190 comprises a suitable linear actuator available from Linak U.S. Inc of Louisville, Ky., but may comprise any device capable of extendable and retractable connection between a point onmain frame 157 and at least one ofradial arms lift drive assembly 190 is controlled by a user with a suitable keypad or similar device (not shown) electrically connected with bedlift drive assembly 190 in a known manner. - The operation of the vertical adjustment apparatus of
bed frame 150 will now be described. Reference to clockwise and counterclockwise rotations and other movement and positional movements relative tobed frame 150 are as viewed inFIG. 15 . In operation and with limit catch in a deactivated position (as shown inFIG. 15 ), retraction actuation of bedlift drive assembly 190 pullsradial arms support arm 194 andcontrol arm 195 rotate about their mounting points at 196 and 197, respectively, andcastor leg 201 rises relative tomain frame 157. Also, at the front ofbed frame 150,radial arms front axle 207 being offset from the front castor legs (one of two shown at 230), the weight ofbed frame 157biases axle 207 to rotate counterclockwise, such rotation only limited bylimit pin 220 bearing on the clockwise underside ofradial arms radial arms axle 207, so dorocker arms main frame 157, and the front ofmain frame 157 drops. If limit catch 222 is actuated by depressingfoot pedal 229 to causehook 228 toward engagement withlimit pin 220, whenradial arms rocker arms hook 228 engageslimit pin 220. Thenrocker arms Radial arms bed frame 157 is lowered. - Extension actuation of bed
lift drive assembly 190 rotates all ofradial arms main frame 157 will rise equally. If limit catch 222 was engaged, the front will begin to raise as soon asradial arms limit pin 220 at which point rocker arms will be rotated clockwise, as well, which will move limit pin out of engagement withhook 228. Limit catch 222 is configured and mounted tobracket 224 to be biased toward a rest position, disengaged from limit pin 220 (as shown inFIG. 15 ) until it is depressed and held byfoot pedal 229. - Referring to
FIGS. 18-20 , there is shown an articulatingbed frame 250 in accordance with one embodiment of the present invention.Bed frame 250 comprises thebed frame 10 ofFIGS. 1-14 along with an articulatingside rail assembly 255.Bed frame 10 ofFIGS. 1-14 has been thoroughly described herein and like reference numbers will be used, as necessary, for the common parts ofbed frame 10 inbed frame 250.Side rail assembly 255 includes ahandle assembly 259, mountingbracket 260, first andsecond linkage arms position control assembly 266 andcontrol unit 267.Handle assembly 259 includesconnector brackets handle 265. As shown inFIG. 19 , mountingbracket 260 includes a mountingplate 271 and a mountingtube 272 that rigidly connectsplate 271 to the side and at the rear end of themain frame 11 ofbed frame 10.Tube 272 extends outwardly ofmain frame 11 at a slight incline to ensure sufficient clearance forlinkage arms bed frame 10 is lowered to its fully reclinedposition 5. -
Linkage arms plate 271 bypins linkage arms plate 271 is such that the pivot axes ofpins line 277 that is preferably at between about 40° and 50° to horizontal, which arrangement provides sufficient clearance and range forside rail assembly 255 to pivot between its down position 278 (FIG. 18 ) and up position 279 (FIG. 25 ), as described herein. At their upper ends,linkage arms connector brackets pins Connector brackets sandwich linkage arms FIG. 20 ). - Handle 265 is a generally C-shaped tubular member with angled, top, front and
bottom sections auxiliary handle 292 is rigidly connected to and extends upwardly frombottom section 289, as shown. Likewise,control unit 267 is rigidly connected to and extends upwardly frombottom section 289, as shown.Control unit 267 replaces thedrive actuator assembly 120 ofbed frame 10 and electronically connects with and controls drive assembly 16 or any similar suitable device employed for articulatingbed frame 10 between its fully reclined and fully inclined positions.Control unit 267 includes at least two buttons 293 (incline) and 294 (recline).Auxiliary handle 292 extends up towardtop section 287, but is sufficiently spaced down fromtop section 287 to enable a person onbed frame 250 to easily reach betweenauxiliary handle 292 andtop section 287 andaccess control unit 267 which, concordantly, extends up frombottom section 289 enough to positionbuttons top section 287 andauxiliary handle 292. Further, becausecontrol unit 267 andauxiliary handle 292 are connected only withbottom section 289, a person grippingside rail assembly 255 can grasp handle 265 at generally any position along angle, top orfront sections front sections top section 287. - Because
handle 265 is generally C-shaped, afriction grip 296 of rubber or similar grip-friendly material can be slid on from the angled section end and into position covering much oftop section 287 andfront section 288.Grip 296 may be smooth, ribbed or of any desired surface configuration or material to provide a comfortable and grip-enhancing surface for the bed user.Grip 296 may be sized longer or shorter than shown inFIG. 18 , as desired. - Handle 265 is immovably connected at the inboard ends of its
angle section 286 andbottom section 289 toconnector brackets upper pin 297 andlower pins angled section 286 andbottom section 289 being sandwiched betweenbrackets 263 and 264 (FIG. 20 ). Handle 265 andconnector brackets handle assembly 259, which moves as a unit and in a substantially constant horizontal orientation between the down and uppositions Connector brackets 263 and 264 (identical to each other) are shaped as shown inFIG. 20 with holes at oneend 300 forpins pins brackets position control assembly 266, as described herein. - Side rail
position control assembly 266 includes aset link 305 pivotally connected at one end by apin 306 to and sandwiched betweenbrackets link 305 defines a closed-endedslot 307 with twonotches Notch 308 is at the inboard end ofslot 307. There is no notch at the outboard end 310 (FIG. 22 ) ofslot 307, and notch 309 is midway betweennotch 308 andoutboard end 310. The length ofslot 307 and relative positionment of the slots (308 and 309 and/or other slots that may be desired) defines the set positions ofside rail assembly 255, as described herein. Aguide arm 312 extends fromlinkage arm 261 to hold aset pin 313 that extends into and follows withinslot 307. Aknob 314 is provided onset link 305 to enable and facilitate manual engagement and disengagement ofposition control assembly 266. - In operation, from the down position 278 (
FIG. 18 ), handle 265 may be grasped and lifted upwardly, wherebyside rail assembly 255 will pivot atpins main frame 11 and articulate toward up position 279 (FIG. 25 ). Before reaching theup position 279, setpin 313 will drop intomiddle notch 309, andside rail assembly 255 will be releasably locked in an intermediate position 318 (FIGS. 21-23 ). To articulateside rail assembly 255 to the full upposition 279,knob 314 is grasped and lifted, thereby pivoting setlink 305 aboutpin 306 and causing setpin 313 to drop out ofslot 307. Handle 265 can then be lifted to the full upposition 279, whereby setpin 313 will drop intoinboard notch 308 and lockside rail assembly 255 in the full up position 279 (FIG. 25 ). It is noted that thefull down position 278 ofside rail assembly 255 is defined by the position of theoutboard end 310 of slot 307 (that is, the end ofslot 307 farthest from the attachment oflink 305 at pin 306). Thus, when setpin 313 reaches theoutboard end 310 ofslot 307,side rail assembly 255 cannot articulate any farther down. Likewise, the inboard end ofslot 307 atnotch 308 defines the upper limit of articulation ofside rail assembly 255. The shape ofslot 307, that is, its length and any notches or other deviations from a straight configuration, defines the movement of set link 305 asside rail assembly 255 is articulated and primarily defines the releasable locking positions forside rail assembly 255. As such, the term notches, as used herein, is contemplated to include such other deviations inslot 307 from a straight configuration that might be used to provide variable releasably locking positions. It is also noted that, to theextent pin 313 reaches theoutboard end 310 ofslot 307 and defines or contributes to limiting further downward movement ofhandle assembly 259,side rail assembly 255 is considered there to be releasably locked in thedown position 278, it being held there by gravity. Apivot stop 319 rigidly extends outwardly from mountingplate 271 and is juxtaposed relative to the pivot axis ofpin 273 and the diameter oflinkage arm 261 so that when setpin 313 engagesoutboard end 310 ofslot 307,linkage arm 261 engages stop 319, the latter also preventing any further clockwise rotation oflinkage arm 261 about pin 273 (as viewed inFIG. 18 ). Stop 319 thus provides additional stability and support forside rail assembly 255 at itsdown position 278 in view of significant downwardly directed user forces that may be applied toside rail assembly 255. - As described with reference to
bed frame 10 ofFIGS. 1-14 , the bed sections and linkage assemblies are sized, shaped and connected so that, upon articulation, a person lying on bed frame 10 (that is, typically on a mattress on bed frame 10) will remain in substantially the same horizontal position relative to a bed table or cabinet typically located to one side and at the head of the bed. concordantly, withbed frame 250, withside rail assembly 255 mounted directly to main frame 11 (instead of to any of the articulating bed sections (12-15) or corresponding linkage assemblies), such person will remain in substantially the same horizontal position relative to articulatingside rail assembly 255. As shown comparingFIGS. 22 and 23 , articulation ofbed frame 10 between the intermediate position 6 (FIG. 22 ) and fully inclined position 7 (FIG. 23 ), handle 265 remains in substantially the same horizontal position relative to backsection 12. Likewise, the sizes, shapes and connections of the components ofside rail assembly 255 are designed so that articulation ofside rail assembly 255 will cause handle 265 to move in a path wherebyconnector brackets back section 12. Thus, any two or more set positions for side rail assembly 255 (such as downposition 278 and intermediate position 318) will provide relatively the same arm comfort position for the bed user. -
Notches slot 307 so that setpin 313 will automatically enter and stay innotches notches link 305 to rotate counterclockwise (as viewed inFIG. 18 ) aboutpin 306, and thus ensure thatset pin 313 will automatically enter and stay in anotch - Alternative embodiments are contemplated where set link 305 has more or fewer notches than the two
notches side rail assembly 255 described herein. - It is noted that
linkage arms brackets plate 271 are sized and configured so thatpins FIG. 26 , the connections and relative distances amongpins linkage arm 262, mountingplate 271 andbrackets 263/264, respectively). In the present embodiment, a=b and c=d, and the figure abcd is a parallelogram. Alternative embodiments are contemplated wherein the distances betweenvarious pins FIG. 26 or are manually or mechanically variable. For example, either a>b (FIG. 27 ) or a<b. In either case c may equal d or be greater or less than d. Or, either c>d (FIG. 28 ) or c<d. In either case a may equal, or be greater or less than b. Other embodiments are contemplated where any one or more of links a, b, c or may be made adjustable. For example, and without limitation, link a may be manually or mechanically adjustable by any appropriate configuration that enables a person to vary the length of link a. One such configuration is shown inFIG. 29 where link a comprises abase plate 328 and aset bar 329.Base plate 328 is pivotally connected at one end to mountingplate 271 bypin 273 and has defined therein a series of spaced apart holes 330 at its opposite end. Set bar is pivotally mounted at its one end toconnector brackets pin 331 at its opposite end. Setpin 331 can be releasably locked in any one ofholes 330 to vary the combined length ofbase plate 328 and setbar 329, and thus, the length of link a (the distance betweenpins - It is noted that
side rail assembly 255 provides mounting at one narrowly dimensioned location near the rear ofbed frame 10, and the components ofside rail assembly 255 may thus be moved out of the way of other elements ofbed frame 10 whenside rail assembly 255 is articulated to its upposition 279. This is accomplished, in part, because the pivotal mounting points oflinkage arms pins assembly 259 is entirely lateral of the first and second pivot axes (pins 273 and 274). That is, as viewed inFIG. 18 , the left-most portion of handle assembly 259 (roughly pivot pin 283) is entirely to the right of the right-most portion of first and second pivot axes (pins 273 and 274). This configuration further permits handleassembly 259 to move vertically a considerable distance, while achieving a substantially compact down position. This results, in part, because of the ratio between the length of thelinkage arms 261 and 262 (lengths a and b) and the span between pivot pins 273 and 274 and between pivot pins 283 and 284 (lengths c and d, respectively). Preferably, both a and b are between 2 and 3 times both c and d, and in one embodiment, a and b are both between about 2.5 and 2.8 times both c and d. - Another embodiment is shown in
FIG. 30 where mountingplate 271 is provided with a series ofholes 334, and pin 274 releasably, pivotally connects link b (linkage arm 262) to link c (mounting plate 271) at any desired one ofholes 339. - Alternative embodiments are contemplated wherein side rail
position control assembly 266 is configured alternatively, the principal operation of which is to provide releasable setting ofside rail assembly 255 at and between the up and down positions, 279 and 278, respectively. Such alternative configurations include, but are not limited to a base plate and set bar configuration (as shown inFIG. 29 ). Another configuration is shown inFIG. 31 where aprotractor plate 336 is rigidly connected toconnector bracket 263 and has three holes defined along an arcuate portion thereof, as shown. In thedown position 278,upper linkage arm 261 is pivotally connected at its outboard end toprotractor plate 336 by a releasable pin orknob 337 extending through then aligned locking holes 338 (in protractor plate 336) and in linkage arm 261 (latter hole inarm 261 not shown). Two other lockingholes protractor plate 336 provide settings forside rail assembly 255 at theup position 279 andintermediate position 318, respectively, as shown. Releasable pin orknob 337, like other such set pins referred to herein, may comprise any appropriate element such as, and without limitation, a pin and knob combination that is spring biased (not shown) to cause such knob to automatically engage and stay engaged until manually released.Knob 337 may also include an enhanced releasable locking feature, such as being threadedly received by one or both oflinkage arm 261 andprotractor plate 336, which would allow the user to tightenside rail assembly 255 in the desired position. Alternative embodiments are contemplated whereinpin 313 has a similar lockability configuration, as with a threaded bolt feature, to enableside rail assembly 255 ofFIG. 18 to be releasably locked in a desired position, either atnotches side rail assembly 255, at least in the down position. Such spring-biased and/or threaded pin and knob combinations are common and well known elements. - Other alternative configurations are contemplated to include active connections devices such as, but not limited to, a powered actuator similar to
linear actuator 175, such actuator being connected betweenpins control unit 267 to enable access by the person in the bed to remotely articulateside rail assembly 255. - The present embodiment is shown with just one
side rail assembly 255, which is mounted to the right side ofbed frame 10. A similar, but mirror-image side rail assembly (not shown) is contemplated to be directly connected tomain frame 11 on the left side ofbed frame 10. Such left-side side rail assembly may carry no control unit, theonly control unit 267, or a second control unit (not shown). In the latter case, such second control unit could be configured and wired to control the vertical adjustment apparatus (e.g. the bedlift drive assembly 190 ofFIG. 15 ), a radio or television, or any other desired apparatus or communication device. - While the invention has been illustrated and described in detail in the drawings and foregoing description, the same is to be considered as illustrated and not restrictive in character, it being understood that only the preferred embodiment has been shown and described and that all changes and modifications that come within the spirit of the invention are desired to be protected.
Claims (45)
1. A bed frame, comprising:
a main frame;
a back section;
a seat section pivotally connected to said back section;
an upper leg section pivotally connected to said seat section;
a lower leg section pivotally connected to said upper leg section;
a first linkage assembly pivotally connected at an upper end to said back section and pivotally connected at an opposite lower end to said main frame;
a second linkage assembly pivotally connected at an upper end to said back section and pivotally connected at an opposite lower end to said main frame;
a third linkage assembly pivotally connected at an upper end to said upper leg section and pivotally connected at an opposite lower end to said main frame;
a support link assembly connecting said upper leg section for sliding and pivoting movement relative to said main frame;
first means for movably supporting said lower leg section atop said main frame;
a drive assembly connected between said back section and one of said main frame and said third linkage assembly for articulating said bed frame between a fully reclined position and a fully inclined position; and,
a side rail assembly connected to said main frame and including a handle having a down position and an up position and including connection means for permitting articulation between the down and up positions.
2. The bed frame of claim 1 wherein said drive assembly is connected at a first end with said back section and at a second end to said main frame.
3. The bed frame of claim 1 wherein said drive assembly is connected at a first end with said back section and is connected at a second end to said third linkage assembly.
4. The bed frame of claim 3 wherein said drive assembly is a linear actuator operable to selectively retract and extend its first and second ends toward and away from each other to articulate said bed frame.
5. The bed frame of claim 1 wherein said main frame includes at least one roller channel, and said support link assembly includes at least one support link rigidly connected at a first end to said upper leg section and extending generally downwardly therefrom to an opposing distal second end that is sized and configured to engage with and follow in the roller channel.
6. The bed frame of claim 1 wherein said first means is a track and guide assembly connected with said lower leg section and said main frame to permit said lower leg section to ride freely along the forward end of main frame.
7. The bed frame of claim 1 further including a transport position wherein said lower leg section is folded about 180 degrees and from the fully reclined position, and rests substantially flat against said upper leg frame.
8. An articulating bed frame, comprising:
a main frame;
a back section, an upper leg section, a seat section pivotally connected at opposing ends to said back section and said upper leg section, and a lower leg section pivotally connected to said upper leg section;
a first linkage assembly being pivotally connected at opposing first and second ends to said back section and said main frame;
a second linkage assembly being pivotally connected at opposing third and fourth ends to said back section and said main frame;
a third linkage assembly being pivotally connected at opposing fifth and sixth ends to said upper leg section and said main frame, respectively;
a support link assembly connecting said upper leg section for sliding and pivotal movement with said main frame;
a drive assembly connected between said back section and one of said main frame and said third linkage assembly, said drive assembly being operable to articulate said bed frame between a fully reclined position and a fully inclined position; and,
a side rail assembly connected to said main frame and including a handle having a down position and an up position and including connection means connecting the handle with said main frame for permitting articulation between the down and up positions.
9. The bed frame of claim 8 wherein said drive assembly is connected at a first connection end to said back section and at a second connection end to said main frame.
10. The bed frame of claim 8 wherein said drive assembly is connected at a first end with said back section and at a second, opposing end with said third linkage assembly.
11. The bed frame of claim 8 wherein said main frame includes at least one roller channel and said support link assembly includes at least one support link that is rigidly connected at a first end to said upper leg section and that extends generally downwardly therefrom to an opposing distal second end that is sized and configured to engage with and follow in the roller channel.
12. The bed frame of claim 8 further including a track and guide assembly connected with said lower leg section and said main frame to permit said lower leg section to ride freely along the forward end of main frame.
13. The bed frame of claim 8 further including a transport position wherein said lower leg section is folded about 180 degrees and from the fully reclined position, and substantially rests flat against said upper leg frame.
14. An articulating bed frame, comprising:
a main frame;
a back section;
first and second linkage assemblies, each being pivotally connected at spaced apart first and third ends to said back section and pivotally connected at opposing, spaced apart and respective second and fourth ends to said main frame;
an upper leg section;
a third linkage assembly pivotally connected at opposing fifth and sixth ends to said upper leg section and said main frame;
a support link assembly connecting said upper leg section for sliding and pivotal movement with said main frame;
a seat section pivotally connected at opposing ends to said back section and said upper leg section;
a lower leg section pivotally connected to said upper leg section and freely supported atop a forward end of said main frame;
a drive assembly connected between said back section and said third linkage assembly and operable to extend and retract to articulate said bed frame between a fully reclined position and a fully inclined position; and,
a side rail assembly connected to said main frame and including a handle having a down position and an up position and including connection means for permitting articulation between the down and up positions.
15. A method for articulating a bed frame between fully reclined and fully inclined positions, comprising the steps of:
providing a bed frame including:
a main frame,
a back section connected to the main frame by first and second linkage assemblies, each of the first and second linkage assemblies being pivotally connected at first and third ends to said back section and pivotally connected at opposing respective second and fourth ends to said main frame,
an upper leg section connected to the main frame by a third linkage assembly and a support link assembly, the third linkage assembly being pivotally connected at opposing fifth and sixth ends to the upper leg section and the main frame, respectively, and the support link assembly being rigidly connected at a seventh end to the upper leg section and being slidably and pivotably connected at an opposing eighth end to said main frame,
a seat section pivotally connected at opposing ends to the back section and said upper leg section,
a lower leg section pivotally connected to said upper leg section and freely supported atop a forward end of said main frame,
a drive assembly connected at first and second connection ends to and between the back section and one of the main frame and the third linkage assembly, the drive assembly being operable to extend and retract to move the first and second connection ends away and toward each other, and
a side rail assembly connected to said main frame and including a handle having a down position and an up position and including connection means for permitting articulation between the down and up positions; and,
from the fully reclined position, actuating the drive assembly to move the first and second connection ends away from each other to articulate the bed frame toward the fully inclined position, and from the fully inclined position, actuating the drive assembly to move the first and second connection ends toward each other to articulate the bed frame toward the fully reclined position.
16. The method for articulating a bed frame of claim 15 wherein the step of providing a bed frame includes the drive assembly being connected at its first connection end to the back section and at its second connection end to the third linkage assembly.
17. The method for articulating a bed frame of claim 16 wherein the step of providing a bed frame includes the drive assembly being pivotally connected at its second connection end to the third linkage assembly.
18. (canceled)
19. (canceled)
20. (canceled)
21. (canceled)
22. (canceled)
23. (canceled)
24. (canceled)
25. (canceled)
26. (canceled)
27. (canceled)
28. (canceled)
29. (canceled)
30. (canceled)
31. (canceled)
32. (canceled)
33. (canceled)
34. The articulating side rail assembly for a bed of claim 18 wherein said position control assembly includes a plate connected with one of said handle assembly and said first and second linkage aims, the plate defining at least one hole, said control assembly further including a pin releasably extendable through the hole of the plate and into a locking hole defined in the other of said one of said handle assembly and said first and second linkage alms to releasably lock said side rail assembly in one of the down position, the up position and an intermediate position between the down and up positions.
35. The articulating side rail assembly for a bed of claim 34 wherein the plate is a protractor plate connected with the handle assembly and the locking hole is defined in one of said first and second linkage arms.
36. The articulating side rail assembly for a bed of claim 35 wherein there are at least three locking holes defined in the protractor plate to define the down, intermediate and up positions.
37. (canceled)
38. (canceled)
39. (canceled)
40. (canceled)
41. (canceled)
42. The articulating side rail assembly for a bed of claim 18 wherein at least one of said first and second linkage arms is adjustable so that at least one of a and b are selectively variable.
43. The articulating side rail assembly for a bed of claim 18 wherein at least one of said mounting plate and handle assembly is adjustable so that at least one of c and d are selectively variable.
44. (canceled)
45. (canceled)
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Also Published As
Publication number | Publication date |
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US20040148704A1 (en) | 2004-08-05 |
US6826793B2 (en) | 2004-12-07 |
CA2456844A1 (en) | 2004-08-05 |
US7257850B1 (en) | 2007-08-21 |
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