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Publication numberUS2604641 A
Publication typeGrant
Publication dateJul 29, 1952
Filing dateFeb 11, 1947
Priority dateFeb 11, 1947
Publication numberUS 2604641 A, US 2604641A, US-A-2604641, US2604641 A, US2604641A
InventorsStanley F Reed
Original AssigneeStanley F Reed
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Inflatable mattress
US 2604641 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

July'29, 1952 s |=l REED INFLATABLE MATTRESS Filed Feb. ll, 1947 ATTORNEY Patented July 29, v1952 UNITED STATES PATE-NT o1=1=-1 1|s 2;604,641'L 'INF-LATABLE MATTRESS StanleytEI Reed, WashingtolL-D. C. y Application February 11, 1947; SriaLNd. 727,902".y (ci: 5 3491 This, invention. relates to supports .and more particularly to a. mattress or bed adapted for .a wide... variety of. uses,A .including Afor homes,v hospitals, ships, camping andlparticularly for 'the armedorces, who..frequently7 must live'un'der especially'rigorousgconditons Where.. it is impossible tohave.. a conventional mattress and springs.. because. of thelweight and vspacerequirements. .of .this same..

.Heretofore,. inatable... mattresses have been -usedeto ,aflimitedrextent but 1 have .suffered'from various.deficiencies, chief lof. which hasv been the lack-.of comfortnbtainable therefrom.v

Withuthe ordinary typeof 'air mattress commonlyy in use, a. substantial. concentration of weight on.Y a. relatively. small area of' the surface; as.: by an elbow,4 knee,. hips `or the like, Would-.oftentimes cause the surface on which the Weighawas restingto bulge inwardly to the opposite- Wall of: the ...mattress eliminating' the cushioning effect of .the .air 'for that area'. At-

tempts have overcomeithis deficiency -by increasing the pressure. within. the mattress. but this .has onlyv proved. partlally satisfactoryasfit. is apparent. thatincreasing .the

pressure will.. materially decrease-.the softness and... resiliency f of Y. the. f. mattress Toentirely eliminate this deciency by. .increasing pressure, pressures would have vtobe. used. of a magnitude which .would..render th'emattress as.

aff-wholeetoo hard for.' satisfactory comfortable use.

The bestthat hasbeen. accomplished .by prior *attempts-is ,to .fstrike a` happy medium based on inatingthe -mattress to a sufficiently high pressuretoresist .ordinary concentrations of vweight kbut Vlow. enoughY that va degree of comfort' was otherwise obtainable..v

'Other means. that havev been. employedto overcomeA thisdifliculty have included vplacing vthe mattress .on-a...surface .with some resiliency,

'the like ofthe conventional feltfor inner yspring mattress-f.

A further object of this invention is'to provide an .-iniiatable mattress having a plurality of'-separate layers adapted to be inflated to 'different pressures in order toprovide the maximum comfort possible and simulate the resiliencyofa conventional--mattress and springs; and which isY completelyA collapsible to V occupy` a minimum of space.

Another object of the invention is to provide an inflatable mattress .having a plurality of separate. layers adapted tobe inatedj to di'f.- ferent. pressures in orderthat the Abody .may rest on a layer of relatively low pressurer to.. experience maximum-.c0mfo'r.t.and.other layer. to providean .insulationior any protuberancesof the-.body that mayextend. through ..the.. layer next. to..the body...

Further.. obj ects.A and. advantages. oi'

,vention will.. be.y apparent. fromrth'ef. following description. takenin.. conjunction. .with .the raccompanying drawings,-.wherein:

Eig.. l `is.y a perspective .of.. 'the .preferred construction.. in .which the .vertical connecting strips extend crosswise of the mattress;

Fig.` 2, aperspective of a. construction similar in. .all respects tolig.. l, except that the .vertical connecting strips extend lengthwise of .the mattress;

` Fig.. 3,- asectionon the line 3 3- oflii'g. 1.;

Fig-.- 4,.a section ontheline 4 4 offFig. 2;.,

Fig. .5, a vertical. section.. of a. modification wherein diagonal Y connecting.. strips are., em.-

Fig. 6Jv a vlvertical: section .of. asmodication havingn three separate.:1ayers..

Referring sto the. drawings,l the. inflatablematftress` comprises.. horizontal.. exterior surfacesv or upper. and lower walls. I U,- side. walls 2 and .end

walls I4. Said. side and said end wallsmayeach integral. wall or separate .upper andlower wall sectionsmay be. provided. An intermediate or inner horizontal dividing Wall I6 is provided substantially midway betwleen f theexterior walls I0 thus providingsuperimposed independent-layers or portionsr II and I3,y defined. by the .horizontal Walls I0, Iside and: end wall`s-|2.and I 4, and the common intermediate wall. I5...- ItA is obvious .that-the walls may be of. integral structure*` or. constructed Aof one. or

more plies.

A. valve I 5 is. provided Afor-.the upper. layer. and azvalvelfl is vprovided forthelower layerof the mattressv in order .that the layers .ofthe mattress mayy be individually inflated .or deflated at; will. The amattress. may.` becompletel-ycollapsed occupyaminimum of'- space whenidesired..v

Suitable connecting Y means such as lateral or longitudinalv ties or partitions I 8 vrnay beintegral with .or .joinedf bysuitable means totheintermediate wall I 6 and to the horizontal exterionwalls I0; However itis apparent that thefpartitions .may be :constructed integrally with' the intermediate wall` if desired.. It will be Ynoted' thatf-the -f partitions extend: completely across the Iindependent layers of the :mattress'an'd are "attached -ini an .orderly mannerin orderthat sufficient supportzmay be provided for lthe horizontal walls andtal'so'fthat' there 'mayi' beadequatev communi- @cationof .air :to all- 'parts of the'independentlayersr I 3 fands! 5 .ofthe mattress. l The primary' pur- .pcsefof theaforesa'id partitions. llistosrestrain the. conninglvralls of 'the mattress from bulging outwardly andlto main'tainthe'mattress in a-substantially rectangular solid form.

l Indentations or depressions 2 I, and raised 3 portionsY 23 will result when the mattress is inflated, as shown in the drawing, the depressions occurring where a tie connects a horizontal exterior wall to an intermediate wall, and a raised portion between the ties, the horizontal exterior walls being of greater length than the intermelformed of non-rigid rubberized sheet material or fabric,Y of the type now generally in use for iniiatable ,mattresses However, I do not wishto limit the invention to a particular type of material. It is only necessary that the material used be of av type in which air may be confined and have sufficient strength and resiliency to perform the necessary functions of this type of mattress.

It is further contemplated that relatively low pressures will be employed in both the upper and lower layers of the mattress in order that the maximum degree of comfort may be obtained therefrom. It has been found experimentally that pressures on the order of one pound per square inch for the lower layer and on the order of "one-eighth' pound per square inch for the upper layer have proven satisfactory. The use of a low unit pressure in the upper layer results in a support having great `softness and resiliency as compared to other mattresses now in use or V'disclosed by the prior art and the use of a slightly higher pressure in the lower layer has been found to be adequate to prevent,'in normal use, a protuberance or concentration of weight on a limited area from extending through both layers of the mattress and contacting the supporting surface.

By using the relatively low pressures indicated above it will be obvious that the use of special equipment, such as a pump, for inflating the mattress will be unnecessary, it being a comparatively VeasyV operation for the user to inate the mattress by blowing into the air inlet valves I5 and I'I.

It is obvious that the terms upper and lower v as used in the specification do not necessarily mean to infer that the mattress is designed to be used with a particular side either up or down.l As now contemplated, the mattress may be of similar or identical construction for both layers and may be used interchangeably with either side up, it being only necessary to vary the pressures of the layers according to the wishes of the individual user. Y

The modication disclosed in Fig. 5 has horizontal exterior walls I0, an intermediate horizontal wall I6, side Walls I2, and end I4 not shown in the view, as with the preferred co-n.

struction. Likewise, connecting means such as ties or partitions 20 are employed. These extend fully across the mattress excepting a small portion ofthe length at each end thereof in order to allow communication of the air within each layer between the cells 24 formed by the par` for additional strength, and extend across the mattress substantially within the cells 2l. One advantagerof this particular modification is that additional support is provided by extending the partitions substantially throughout therlength and by including the' additional transverse partitions. Later movement between the top and bottom is avoided.

Fig. 6 discloses another modification having upper and lower horizontal exterior walls I0 horizontal intermediate walls 26 and 28, side walls I2, and end walls it not shown in the view, as with the preferred construction. Connecting means 30, 3i and 32 are provided which extend across the mattress excepting a small portion at the end thereof as is the case with the construc- .ti'onfshown in Fig. 5v providing communicating cells Sti within each layer. It has been found that the addition of another layer is in some cases advantageous particularly where veryy heavy people are concerned. Then too, an added'degree of comfort is obtainable for the ordinary user who may prefer this type of construction.'

It may be emphasized that the scope of the invention'is not merely that of providing a partitioned mattress orrpro'viding a mattress of a plurality of individual layers but that of providing an inflatable mattress so constructed as to provide the maximum amount of comfort obtaina-ble with the greatest savingin weight and spaceY requirements possible. f

It will be obvious to those skilled in the art that various changes may be made in the invention without departing from the spirit and scope thereof and therefore the invention is not limited to that which is shown in the drawing and described in the specification but only as indicated in the appended claim. l

What is Vclaimed is:

A reversible pneumatic mattress comprising upper, lower, intermediate, side, end, and transverse walls of air-retaining sheet material providing a body having pneumatic portions with `said, intermediate wall providing a separating wall therebetween, spaced subdividing walls connected to and extending outwardly from said separating wall and having portions of their lengths alternately connected to and free from said upper and lower walls for reinforcing and restricting the separation thereby and permitting free cir- Vculation of air in said pneumatic portions, .but

Isions simulating a tuftedmattress.


REFERENCES CITED The following references are of recordin the le of this patent:

UNITED STATES PATENTS Numberl Name Date 779,576 Berryman Jan. 10, 1905 802,526r Russell, Ji.v Oct. 4, 1905 1,146,615 Dodd July 13, 1915 1,279,467 Smith Sept. 17, 1918 1,371,919 Mahony Mar.V 15, '1921 1,576,211 OKane Mar. 9, 1926 1,610,898 Steiner Dec, 14, 1926 1,738,411 Welch Dec. 3, 1929 v FOREIGN PATENTS vNumber Country hDate Y,3,424 Great Britain Apr. 15, 1909

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US779576 *Sep 11, 1903Jan 10, 1905Benjamin F BerrymanMattress.
US802526 *Jan 28, 1905Oct 24, 1905William M Russell JrPneumatic mattress and cushion.
US1146615 *May 29, 1914Jul 13, 1915Laura L DoddUpholstery.
US1279467 *Sep 27, 1917Sep 17, 1918Albert J SmithMattress.
US1371919 *Oct 8, 1920Mar 15, 1921Eugene P MahonyVermin-proof combined mattress and spring
US1576211 *May 15, 1925Mar 9, 1926Walter C O'kaneMattress
US1610898 *Oct 5, 1923Dec 14, 1926Cleveland R SteinerPneumatic mattress
US1738411 *Feb 2, 1926Dec 3, 1929Oliver P WelchRest and exercising appliance for infants
GB190903424A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2872690 *Aug 15, 1955Feb 10, 1959Neisler Brothers IncInflatable device of predetermined surface contour and method of making same
US2920617 *Jul 2, 1956Jan 12, 1960Hertense Marguerite BoiarskyApplicator for ultrasonic transducer
US2938570 *Jul 5, 1957May 31, 1960William J FlajoleSeat construction
US3772717 *Feb 11, 1971Nov 20, 1973K YuenInflatable mattresses and cushions
US3978530 *Nov 21, 1975Sep 7, 1976Amarantos John GAir inflatable bed-like device with adjustable back support
US4092750 *May 14, 1976Jun 6, 1978Ellis Donald GInflatable insulating apparatus
US4247962 *Oct 10, 1978Feb 3, 1981Monterey Manufacturing, Inc.Waveless waterbed mattress
US4262045 *Mar 16, 1979Apr 14, 1981Cheng Chen YenCellular air bag insulation and insulator
US4345348 *Nov 19, 1979Aug 24, 1982Monterey Manufacturing, Inc.Waterbed mattress with a baffle
US4346132 *Apr 14, 1981Aug 24, 1982Cheng Chen YenCellular air bag insulation and insulator
US4399575 *Apr 3, 1981Aug 23, 1983Monterey Manufacturing, Inc.Waterbed mattress with unattached baffle structure
US4551873 *Jul 13, 1982Nov 12, 1985Monterey Manufacturing Co.Waterbed mattress with a baffle
US4575885 *May 25, 1984Mar 18, 1986Monterey Manufacturing Co.Waterbed mattress with free floating baffle
US4745645 *Aug 27, 1987May 24, 1988Mcwilliams Douglas JInflatable insert for worn mattresses
US4864671 *Mar 28, 1988Sep 12, 1989Decubitus, Inc.Controllably inflatable cushion
US4908895 *Mar 20, 1989Mar 20, 1990Walker Robert AAir mattress
US5044030 *Jun 6, 1990Sep 3, 1991Fabrico Manufacturing CorporationMultiple layer fluid-containing cushion
US5107557 *Feb 14, 1991Apr 28, 1992Dennis BoydWaterbed mattress with air cushion
US5195199 *May 18, 1992Mar 23, 1993Sereboff Joel LFluid cushion
US5373595 *Mar 12, 1993Dec 20, 1994Irvin Industries Canada Ltd.Air support device
US5544373 *Apr 11, 1995Aug 13, 1996Chang; Yung-YiAir cushion for sleeping in a car
US5581828 *Sep 19, 1994Dec 10, 1996Price Manufacturing, Inc.Air flotation insert for wooden waterbed frame
US5598593 *Feb 10, 1995Feb 4, 1997Aqua-Leisure Industries, Inc.Inflatable air bed
US5606754 *Jul 17, 1995Mar 4, 1997Ssi Medical Services, Inc.Vibratory patient support system
US5642544 *Oct 10, 1995Jul 1, 1997Munoz; Rosario CastroHydraulic pillow
US5809597 *Jan 30, 1997Sep 22, 1998Shaw; Terry W.Inflatable body support
US5983429 *Sep 23, 1998Nov 16, 1999Stacy; Richard B.Method and apparatus for supporting and for supplying therapy to a patient
US6076214 *Mar 23, 1999Jun 20, 2000Sevylor U.S.A., Inc.Inflatable mattress assemblies
US6098222 *Feb 21, 1997Aug 8, 2000Hill-Rom Company, Inc.Vibratory patient support system
US6178578Aug 17, 1998Jan 30, 2001Hill-Rom, Inc.Pressure control assembly for an air mattress
US6240584Jan 7, 2000Jun 5, 2001Hill-Rom, Inc.Mattress assembly
US6415814Aug 7, 2000Jul 9, 2002Hill-Rom Services, Inc.Vibratory patient support system
US6418579Jun 4, 2001Jul 16, 2002Hill-Rom Services, Inc.Check valve for mattress assembly
US6453485 *Feb 8, 2001Sep 24, 2002Charles BullockProtective device for a bathtub
US6505368Jun 30, 2000Jan 14, 2003Hill-Rom Services, Inc.Mattress assembly
US6568011 *Jan 4, 2001May 27, 2003Intex Recreation Corp.Inflatable mattress
US6568013May 21, 2002May 27, 2003Hill-Rom Services, Inc.Fluid mattress assembly with check valves
US6618884 *Jul 11, 2002Sep 16, 2003Hsin-Tsai WuInflatable mattress with integrated upper and lower inflatable bodies
US6671910 *Dec 5, 2001Jan 6, 2004Intex Recreation Corp.Inflatable bed
US6684434Dec 4, 2002Feb 3, 2004Hill-Rom Services, Inc.Mattress assembly
US6701559Aug 1, 2001Mar 9, 2004Aero Products International, Inc.Increased height inflatable support system
US6708352Dec 16, 2002Mar 23, 2004Hill-Rom Services, Inc.Patient support apparatus and method
US6735800Jun 27, 2000May 18, 2004Hill-Rom Services, Inc.Disposable mattress portion
US6775868 *May 3, 2000Aug 17, 2004Trlby Innovative LlcInflatable mattress systems and method of manufacture thereof
US6820640Jul 8, 2002Nov 23, 2004Hill-Rom Services, Inc.Vibratory patient support system
US6964134Apr 1, 2002Nov 15, 2005Chaffee Robert BMembrane deflation in combination with rigid surfaces
US6983502 *Mar 30, 2001Jan 10, 2006Boyd Flotation, Inc.Air mattress with pillow top
US6996867 *Jan 5, 2004Feb 14, 2006Aero Products International, Inc.Increased height inflatable support system
US7000276Apr 11, 2003Feb 21, 2006Chaffee Robert BBody support surface comfort device
US7080421 *Jul 29, 2005Jul 25, 2006Pacific Coast Feather CompanyBedding article with overlaying portions
US7080467Jun 27, 2003Jul 25, 2006Reebok International Ltd.Cushioning sole for an article of footwear
US7152264Dec 26, 2001Dec 26, 2006Dennis BoydAir mattress with pillow top
US7165283 *Sep 23, 2005Jan 23, 2007Aero Products International, Inc.Increased height inflatable support system
US7174589Aug 17, 2004Feb 13, 2007Trlby Innovative LlcInflatable cushion systems and method of manufacture thereof
US7246393 *Apr 11, 2005Jul 24, 2007West & Knowles Design And Engineering, L.L.C.Inflatable mattress
US7254853 *May 8, 2006Aug 14, 2007Worl Sung KimAir mattress
US7328472Jul 10, 2002Feb 12, 2008Chaffee Robert BConfigurable inflatable support devices
US7353555Dec 7, 2005Apr 8, 2008Ideal Time Consultants LimitedInflatable mattress assembly
US7353625Nov 2, 2004Apr 8, 2008Reebok International, Ltd.Resilient cushioning device for the heel portion of a sole
US7367073Nov 27, 2006May 6, 2008Dennis BoydAir mattress with pillow top
US7380300Nov 4, 2005Jun 3, 2008Dennis BoydAir mattress with pillow top
US7406735Jun 8, 2006Aug 5, 2008Intex Recreation Corp.Air-inflated mattress
US7412738Apr 25, 2003Aug 19, 2008Robert ChaffeeFluidic chambers fluidly connected by one way valve and method for use
US7424760Mar 25, 2005Sep 16, 2008Chaffee Robert BBody support, comfort device
US7455744Aug 17, 2004Nov 25, 2008Trlby Innovative LlcInflatable mattress systems and method of manufacture thereof
US7478448 *Dec 22, 2006Jan 20, 2009Aero Products International, Inc.Inflatable reinforcing chamber
US7509699 *Feb 21, 2007Mar 31, 2009Eugene Lee TresenfeldLeveling camping pad
US7591036 *Mar 27, 2008Sep 22, 2009Intex Recreation Corp.Air-inflated mattress
US7610642Aug 15, 2007Nov 3, 2009Dennis BoydAir mattress with pillow top
US7694372Apr 7, 2009Apr 13, 2010Dennis BoydAir mattress
US7770332 *Nov 30, 2006Aug 10, 2010Muhamed SemizStructure with space applications and methods of construction thereof
US7814593Oct 5, 2007Oct 19, 2010Mady AttilaGradient bed
US8402582 *Jun 13, 2011Mar 26, 2013Zhejiang Natural Travel Goods Co., Ltd.Air mattress
US8429774Aug 13, 2010Apr 30, 2013Hill-Rom Industries SaLateral tilt device
US8434177Dec 12, 2007May 7, 2013Robert B. ChaffeeConfigurable inflatable support devices
US8601622Apr 5, 2013Dec 10, 2013Hill-Rom Industries S.A.Patient support apparatus including a lateral tilt device
US8720120Sep 29, 2005May 13, 2014Robert B. ChaffeeMembrane deflation in combination with rigid surfaces
US8826478Jul 24, 2012Sep 9, 2014Robert B. ChaffeeInflatable device forming mattresses and cushions
US8935820Feb 11, 2013Jan 20, 2015Trlby Innovative LlcExpandable structure constructed from sealed films
US9247827Jan 16, 2015Feb 2, 2016Intex Recreation Corp.Multi-chamber inflatable device
US9279430Jul 15, 2014Mar 8, 2016Robert B. ChaffeePump with axial conduit
US9279510Apr 9, 2013Mar 8, 2016Robert B. ChaffeeValve with electromechanical device for actuating the valve
US20020138909 *Mar 30, 2001Oct 3, 2002Dennis BoydAir mattress with pillow top
US20020184710 *Apr 1, 2002Dec 12, 2002Chaffee Robert B.Membrane deflation in combination with rigid surfaces
US20030028971 *Jul 10, 2002Feb 13, 2003Chaffee Robert B.Configurable inflatable support devices
US20030192123 *Apr 11, 2003Oct 16, 2003Chaffee Robert B.Body support surface comfort device
US20030200611 *Apr 25, 2003Oct 30, 2003Chaffee Robert BFluidic chambers fluidly connected by one way valve and method for use
US20040074004 *Jul 17, 2003Apr 22, 2004Boso Karen LInflatable support system
US20040128772 *Dec 18, 2003Jul 8, 2004Branson Gregory W.Patient support surface
US20040194219 *Jan 5, 2004Oct 7, 2004Boso Karen L.Increased height inflatable support system
US20050097674 *Aug 17, 2004May 12, 2005Mileti Robert J.Inflatable cushion systems and method of manufacture thereof
US20050120590 *Nov 2, 2004Jun 9, 2005Todd EllisResilient cushioning device for the heel portion of a sole
US20050132490 *Dec 16, 2004Jun 23, 2005Davis David T.Pneumatic lift
US20050166326 *Mar 25, 2005Aug 4, 2005Chaffee Robert B.Body support, comfort device
US20060016015 *Sep 23, 2005Jan 26, 2006Aero Products International, Inc.Increased height inflatable support system
US20060032188 *Sep 29, 2005Feb 16, 2006Chaffee Robert BMembrane deflation in combination with rigid surfaces
US20060062451 *Nov 3, 2005Mar 23, 2006Microsoft CorporationMethod for boosting the performance of machine-learning classifiers
US20060179577 *Dec 21, 2005Aug 17, 2006Chaffee Robert BBody support comfort device
US20060225219 *Apr 11, 2005Oct 12, 2006Westendorf David JInflatable mattress
US20070033739 *Aug 12, 2005Feb 15, 2007Austen Timothy FInflatable support system having thermoplastic polyurethane construction
US20070113350 *Nov 27, 2006May 24, 2007Dennis BoydAir Mattress with Pillow Top
US20070120348 *Nov 30, 2006May 31, 2007Muhamed SemizStructure with space applications and methods of construction thereof
US20070124864 *Dec 7, 2005Jun 7, 2007Lau Vincent WInflatable mattress assembly
US20070169274 *Dec 22, 2006Jul 26, 2007Boso Karen LInflatable reinforcing chamber
US20070226912 *Aug 17, 2004Oct 4, 2007Robert MiletiInflatable mattress systems and method of manufacture thereof
US20070283499 *Jun 8, 2006Dec 13, 2007Intex Recreation Corp.Air-inflated mattress
US20080078032 *Aug 15, 2007Apr 3, 2008Dennis BoydAir mattress with pillow top
US20080209643 *Mar 27, 2008Sep 4, 2008Intex Recreation Corp.Air-inflated mattress
US20080271251 *May 19, 2005Nov 6, 2008Prospective Concepts AgPneumatic Cushion for Sitting, Leaning or Lying Upon
US20090049617 *Dec 12, 2007Feb 26, 2009Chaffee Robert BConfigurable inflatable support devices
US20090089934 *Oct 5, 2007Apr 9, 2009Mady AttilaGradient bed
US20110047703 *Aug 13, 2010Mar 3, 2011Jean-Francois TarsaudLateral tilt device
US20110191961 *Feb 10, 2010Aug 11, 2011SportspowerEcological airbed
US20120000017 *Jun 13, 2011Jan 5, 2012Zhejiang Natural Travel Goods Co., Ltd.Air mattress
USD765443Sep 11, 2014Sep 6, 2016Intex Marketing Ltd.Inflatable mattress
EP0023148A1 *Jul 21, 1980Jan 28, 1981John Kirkpatrick PatersonMattresses
EP1121083A1 *Aug 17, 1998Aug 8, 2001DAVIS, David T.Improved inflatable medical patient transfer apparatus
EP1121083A4 *Aug 17, 1998Aug 3, 2005David T DavisImproved inflatable medical patient transfer apparatus
WO2006110640A2 *Apr 10, 2006Oct 19, 2006West & Knowles Design And Engineering, L.L.C.Inflatable mattress
WO2006110640A3 *Apr 10, 2006Jun 21, 2007Kevin J KnowlesInflatable mattress
WO2013120061A1Feb 11, 2013Aug 15, 2013Trlby Innovative LlcExpandable structure constructed from sealed films
U.S. Classification5/710, 5/711
International ClassificationA47C27/08
Cooperative ClassificationA47C27/087, A47C27/081
European ClassificationA47C27/08A, A47C27/08F