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Publication numberUS2522759 A
Publication typeGrant
Publication dateSep 19, 1950
Filing dateOct 23, 1947
Priority dateOct 23, 1947
Publication numberUS 2522759 A, US 2522759A, US-A-2522759, US2522759 A, US2522759A
InventorsMarie Lindquist
Original AssigneeMarie Lindquist
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Adjustable bed
US 2522759 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

M. LINDQUIST ADJUSTABLE BED Sept. 19, 1950 2 Sheets-Sheet 1 Filed Oct. 25, 1947 INVENTOR 5 Mam AZI'QRNEK Sept. 19, 1950 I M. LlNDQUlST ADJUSTABLE BED 2 Sheets-Sheet 2 Filed Oct. 25, 1947 INVENTOR BY f ATTORNEK Patented Sept. 19, 1950 UNITED STATES PATENT OFFICE ADJUSTABLE BED v I Marie Lindquis t, San Francisco, Calif. Application October 23, 19147, setialim. 781,607

5 Claims.

. 1 This inventionrelates to improvementsin adjustable beds. An objectof my invention is to provide an adjustable bed having novel means for raising and lowering either or both of fits'ends.

Another object of my invention is to provide "a novel bedadapted for hospital and other uses, embodying 'hand'opera'ted means by which either the foot or head ends. of the bed may be raised or lowered orthesupporting frame of the bed may be vertically adjusted to position the occupant at a desiredheight above the floor level.

Other and furtherobjects of my invention will be pointed out hereinafter, indicated inthe appended claims, or will be obviousto one skilled in the art upon an understanding of the present disclosure. For the purpose of this'application I haveelectecl to show herein certain forms and details of an adjustable bed representativeof my invention; it is to be understood, however, that the embodiment of my invention herein shown and 'describedis for the purpose of illustration only and is not to be regarded as limiting the scope of the invention in the" art.

In the accompanying drawings: a

Fig. 1 is aside elevation of an adjustablebed embodying the principlesof my invention, showing by the broken lines the supporting frame in a raised position;

Fig. 2 is an end view of the bed; a

Fig. 3 ista side view of the bed showing the head endthereof in a raised position;

I Fig. 4 is a similar view showing the foot end of the bed in a raised position; a V

Fig. 5is an enlargedsectional view taken on the line 5-5 of Fig. 4; and a Fig. 6 is a diagrammatic plan view of the means employed inadjusting the bedto different positions.

The frame of the bed whichordinarily supports the springs and mattress embodies a head portion I, a foot portion 2 and an intermediate connecting portion 3. Both "of the head" and foot portions. I and! have depending tubular legs 4 which are aligned with upwardly extending tu r os s The means for vertically adjusting the frame asfa whole or either of the; head or foot portions I and 2 with respect to the other embodies a jrnechanism which is preferably housedfwithin the tubular members of the bed frame.

Positioned in each leg 5 is a non-rotatable supporting shaft which has an upper threaded portion 6 and a lower squared or otherwise suitably shaped portion 6', the latter having a caster I mounted thereon. The lower portion '6" of each shaft extends through a fixed collar 8 which prevents the rotation of the shaft. Openatively engaging with the threaded portion t of each shaft is a nut 9 which carries a bevel gear II], thesaid nut havin an annular groove II therein into which a pin or screw I2 secured to .a leg 4 extends. The screws I2 are secured to the legs 4 and they permit the rotation of the nuts 9 but not the up or down movement thereof with respect to the legs. Engaging with each bevel gear I0 is a similar gear I 3 which is connected by an inwardly disposedhorizontal connecting rod I4 to a bevel gear I5. Each connectingrod I4 is rotatably mounted in bearings I6 supported on the frame The bevel gears l5 associated with the head portion of the bed frame are arranged for operative engagement with a similar bevel gear I'I secured to the forward end of a shiftable and rotatable operatin shaft l8 which is supported in bearings I9 carried on the bed frame. The

operating shaft I8 extends rearwardly through a of the bed frame, depending on the particular position of the operating shaft I8. The bevel gear I1 is connected by a suitable spline arrangement to the forward end of the operating shaft I8, thereby making it. possible for the said gear to, slide forwardly or rearwardly on the said shaft a and at the same time rotate therewith. A helical a the bed framaa-nd vice versa. Thus'when the gear 23 is meshed with its associated gears t5 the footportion 2 of the bed frame may be raised or lowered by turning the crank 2|, and when the gear I! is meshed with its associated gears. I5 the head portion I of the bed frame may be vertically adjusted. To permit both ends of the bed frame to be simultaneously raised or lowered the gear 12 must be in engagement with the gears I associated with the foot portion 2 of the bed frame at the same time the gear I! is connected to its associated gears. The gears l1 and 22 are so arranged that the latter does not engage with its associated ears until the shaft [8 has been progressively shifted in a rearward direction sufficiently to first bring the gear 22 into engagement with its associated gears l5 and then to a further extent (permitted by the contraction of the compression spring 24) to effect the engagement of the gear 22 with the rearwardly disposed gears [5. Thus when both of the gears l1 and 22 are respectively meshed with their associated gears IS, the bed frame as a unit may be vertically adjusted by turning the operating shaft 18.

The means employed for shifting the operating shaft [8 includes the following mechanism. The housing is internally threaded to permit a spirally grooved cam member 25 to operatively engage therewith. The cam member 25 has a handle 26 on its outer end and its inner end is formed with an annular groove 27 within which is rotatably confined an annular flange 28 secured to the operating shaft I8. By turning the handle 26 in a certain direction the cam member 25 is moved forwardly, thereby shiftin the operating shaft in the same direction and thus effecting the engagement of the gear 23 with its associated gears I5. By turning the cam member in the opposite direction to a predetermined extent the operating shaft [8 is shifted rear- Wardly to effect the connection of the gear I! with its associated gears l5, and when the cam member is further turned in this same direction the shaft is shifted still farther to the rear to also effect the engagement of the gear 22 with its associated gears 15. It will be noted that the threaded portions 6 of the supporting shafts at the left hand side of the bed frame have right hand threads while those on the right hand side have left hand threads, it being necessary to have the supporting shafts at opposite sides of the bed frame oppositely threaded to permit the proper raising and lowering of the head and foot ends of the bed frame.

When the cam 25 has once been adjusted to effect the suitable shifting of the operating shaft l8 to position certain gears in operative engagement with one another, the crank 2! is turned in a direction required to effect the desired adjustment of the bed frame. As the then connected set or sets of gears [5 are rotated the nuts 9 associated with the latter are also rotated and are thereby made to move either upwardly or downwardly on the screw portions 6 of their 1 frame having tubular front and rear legs, a nonrotatable threaded supporting member positioned in and extending below each leg, a rotatable nut operatively engaging with each threaded supporting member, means connecting each nut with its associated leg whereby the leg may be vertically adjusted in accordance with the adjustment of the nut on its associated threaded member, and means for selectively rotating the nuts of either the front legs or the rear legs or all of the nuts simultaneously.

2. An adjustable bed comprising a supporting frame having front and rear pairs of tubular legs, a non-rotatable threaded supporting member positioned in and extending below each leg, a rotatable nut mounted in each leg and operatively engagingwith each threaded supporting member, and arranged for vertical adjustment thereon, each of the said nuts being rotatably connected with its associated leg but not longitudinally adjustable therein, whereby the leg may be vertically adjusted in accordance with the adjustment of the nut on its associated threaded member, means for selectively rotating the nuts associated with either the front or rear pair of legs or the nuts of both pair of legs simultaneously.

3. An adjustable bed comprising a supporting frame having front and rear pairs of tubular legs, a non-rotatable threaded supporting member positioned in and extending below each leg, a rotatable nut mounted in each leg and operatively engaging with each threaded supporting member and arranged for vertical adjustment thereon, each of the nuts being rotatably connected with its associated leg but not longitudinally adjustable therein, whereby the said leg may be vertically adjusted in accordance with the vertical adjustment of the nut on its associated threaded member, a gear secured to each nut, and means for selectively rotating the gears of either pair of legs or the gears of both pairs of legs simultaneously.

4. An adjustable bed comprising a supporting frame having front and rear pairs of tubular legs, supporting screws mounted in and extending below the legs, rotatively adjustable nuts mounted in the legs and engaging with the supporting screws and arranged for up and down adjustment thereon, the said legs being supported from the adjustable nuts, and means for selectively adjusting the nuts associated with either the front or the rear pair of legs or both pairs of legs simultaneously.

5. An adjustable bed, supporting frame having front and rear pairs of tubular legs, non-rotatable externally threaded members positioned in and extending below the legs, rotatable internally threaded elements adjustably engaging with the threaded members and arranged in connected and supporting relationship with the legs, and means for simultaneously rotating the elements of either pair of legs or all of the elements simultaneously, whereby either pair of legs or all of the legs may be vertically adjusted with respect to the floor.

MARIE LINDQUIST.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS

Patent Citations
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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2592166 *Oct 17, 1947Apr 8, 1952Hospital Furniture IncSafety bed
US2681454 *Jan 15, 1951Jun 22, 1954John TallmanVertically adjustable bed frame
US2707137 *Feb 26, 1952Apr 26, 1955F R Machine WorksTable with adjustable top
US2709477 *Jan 12, 1953May 31, 1955Young John CVertically adjustable vehicle seat
US2802219 *Jan 5, 1953Aug 13, 1957Simmons CoHospital bed
US2872688 *Feb 15, 1954Feb 10, 1959Shampaine CompanyHospital beds
US2874756 *Aug 5, 1955Feb 24, 1959Simon AaronInvalid's wheelchair
US2885692 *Apr 15, 1954May 12, 1959Scott Wetzel EllsworthAdjustable beds
US3015113 *Dec 2, 1955Jan 2, 1962Superior Sleeprite CorpAdjustable bed
US3132351 *Oct 17, 1961May 12, 1964William Freeman JHospital bed
US3149349 *Aug 30, 1961Sep 22, 1964Ted NelsonBed
US3253284 *Feb 8, 1965May 31, 1966Gendron Wheel CompanyAdjustable stretcher
US3802002 *Jun 7, 1972Apr 9, 1974Jonas CBeds
US4324010 *May 6, 1980Apr 13, 1982Joerns Furniture CompanyDrive unit for adjustable beds
US5172442 *Jan 3, 1992Dec 22, 1992Stryker CorporationLitter support having telescoping threaded rod arrangement
US5343581 *Oct 21, 1992Sep 6, 1994Stryker CorporationHousing and drive mechanism for screw lift of hospital bed
US5636394 *Apr 28, 1995Jun 10, 1997Stryker CorporationHospital bed with rack and pinion stabilizer
US6058532 *Mar 30, 1998May 9, 2000Allen; Newton P.Apparatus for elevating one end portion of a bed frame
US6678907 *Mar 22, 2000Jan 20, 2004Voelker Moebelproduktionsgesellschaft MbhBed, especially a sick-bed and/or nursing bed, and length-adjustable support element for said bed
US6983495 *Oct 25, 2002Jan 10, 2006Invacare CorporationAdjustable height bed
US6997082Oct 27, 2003Feb 14, 2006Invacare IncorporatedAdjustable bed
US7302716Oct 14, 2005Dec 4, 2007Invacare CorporationAdjustable bed
US7441289Jun 10, 2004Oct 28, 2008Invacare CorporationSlip nut assembly for adjustable height bed
US8056163Jun 28, 2007Nov 15, 2011Stryker CorporationPatient support
US8418283 *May 9, 2011Apr 16, 2013Drive Medical Design & Mfg.Universal bed system
US8424135 *Oct 20, 2011Apr 23, 2013Drive Medical Design & MfgUniversal bed system
US8819878 *Mar 22, 2013Sep 2, 2014Drive Medical Design & Mfg.Universal bed system
US20110271443 *May 9, 2011Nov 10, 2011Drive Medical Design & Mfg.Universal bed system
US20120084921 *Oct 20, 2011Apr 12, 2012Drive Medical Design & Mfg.Universal bed system
US20130212803 *Mar 22, 2013Aug 22, 2013Drive Medical Design & Mfg.Universal bed system
CN100418501COct 22, 2003Sep 17, 2008英瓦卡尔公司Adjustable height bed
DE1006596B *Feb 2, 1953Apr 18, 1957Heinrich GerstBett mit einem als Liegeflaeche dienenden, frei schwebenden Drahtnetz
WO1993012750A1 *Jan 4, 1993Jul 8, 1993Stryker CorpLitter support having telescoping threaded rod arrangement
WO2004037043A2 *Oct 22, 2003May 6, 2004Goertzen GeroldAdjustable height bed
WO2005044053A1 *Jun 10, 2004May 19, 2005Invacare CorpAdjustable bed
Classifications
U.S. Classification5/610, 5/611
International ClassificationA61G7/005
Cooperative ClassificationA61G7/005
European ClassificationA61G7/005