US2434641A - Resilient seat cushion - Google Patents

Resilient seat cushion Download PDF

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Publication number
US2434641A
US2434641A US64910646A US2434641A US 2434641 A US2434641 A US 2434641A US 64910646 A US64910646 A US 64910646A US 2434641 A US2434641 A US 2434641A
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Prior art keywords
chambers
resilient
sheets
cushion
fluid
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Expired - Lifetime
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Henry L Burns
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Henry L Burns
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C27/00Stuffed or fluid mattresses specially adapted for chairs, beds or sofas
    • A47C27/08Fluid mattresses, e.g. pneumatic mattresses, Liquid mattresses or mattresses with fluid-like particles
    • A47C27/081Pneumatic mattresses
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C27/00Stuffed or fluid mattresses specially adapted for chairs, beds or sofas
    • A47C27/14Stuffed or fluid mattresses specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/18Stuffed or fluid mattresses specially adapted for chairs, beds or sofas with foamed material inlays in combination with inflatable bodies
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT OR ACCOMODATION FOR PATIENTS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05Parts, details or accessories of beds
    • A61G7/057Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor
    • A61G7/05769Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with inflatable chambers
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S297/00Chairs and seats
    • Y10S297/03Pneumatic

Description

53 30, H. L. BURNS RESILIENT SEAT CUSHION Filed Feb. 20, 1946 INVENTOR. #51169) L. 808M! I inane-ja- Patented Jan. 20, 1948 UNITED STATES PATENT OFFICE! i I, -z,4s4,e41 it V,

' flassmmsr sea-r cosmos lienryLrBurns, Yellow Springs, Ohio applieat ionFebi-uaryzli, 1940, Serial No. 649,106 p v .4c sin ciiss-mi (Granted under the act of lilarch 3, 1 883, as

amended April 30,1928; 370 0. G. 757) The invention described herein may be manufactured and used by or for the-Government for governmental purposes without payment to me of any royalty thereon. V

This invention relates to cushions generally and more particularly'to fluid filled cushions intended to be used to supportthe human body'in a sitting or reclining position. The invention has particular applicability for use in seat'cushions for invalid chairs and for use aboard airplanes.

Presently known cushions do not adequately minimize body fatigue where the user ofnecessity is required to remain in one position over extended periods of time. Fatigue tests have indicatedthat seat cushions should be constructed to automatically conform to the anatomy of the user and-at the same time should; be adapted to supply varying supporting forces distributed over the supporting surface.

Accordingly, the principal object of this-invention is .the provision of a cushion that reduces fatigue to a minimum'due tothe fact that it is adapted to exert local supporting forces which correspond in magnitude to the applied load as i such load is distributed over the cushion supportins surface. 1

A further objector the invention is the provision of a cushion comprising a plurality of interconnected-fluid containing chambers which are spaced and its various parts arranged so as to furnish an adequate ventilating space between its chambers and parts in order to permit the cushion to be adequately ventilated and cooled under various conditions andiduring prolonged use, the structure being at the same time 30 arranged and braced as to obviate any danger of the cushioning chambers developing relative lateral movement the one to the other.

These and other objects of the invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings in which:

Fig. 1 is a partly cut away perspective view of a cushion constructed in accordance with this invention:

Fig. 2 is a plan view of the cushion with certain upper elements removed to facilitate showing the arrangement of the resilient air filled chambers:

Fig. 3 is an enlarged'cross-sectlonal view taken substantially on 111163-301 Fig. 2. 1

As disclosedin the drawing,

and comprising an upper set and a lower set of resilient chambers 2 and 2', respectively. The chambers are preferably made in the shape of" bellows and are composed of rubber or similar material to retain air and render them resilient.

These chambers 2 and 2" aresecured' to or areproviding communication between said chambers;

while the joined ends between each upper chambar. 2 and'its companion'lower chamber? are open'to provide communicationbetween saidtwo companion chambers.

The resilient sheets a and! unsecured together by cement, glue-or othersuitable material in such a way as to cause the resilient chambers" 2 mounted on resilient sheet Into coincide in o posed relationship to resilient chambers 2'-mounted on resilient sheet 3'. The; resilient sheets I and 3' and connecting passages I are constructed .of-rubber like said chambers. Stem and valve means are suitably connected to the system o! chambers-to supply fluid, such as air, totheinteriors of the chambers andflconnecting passages for inflating these chambers. "While the fluid used may be either gaseous orjiiquid; valve means 6 as shown is more suitable for supplying gaseous fluid. v H

The ends of the resilient chambers remote from the resilient sheets 3 and 3' are caused to remain properly oriented by means of porous fabric sheets 1 and 1"to which the upper and the lower ends of said chambers are respectively aflixed by cement, glue or other suitable means. Thin felt or sponge rubber pads 8 and 8 are positioned adjacent to the exterior surfaces of porous fabric sheets I and I to distribute the supporting pressure of the spaced chambers and prevent discomfort to the user occasioned by relatively high 10- calized pressures near the outer ended the resilient chambers. The above described construction is completely encased in a fabric cover 5.

It should be noted that in this disclosed form of construction, the upper and lower sets of chambers or bellows 2 and 2' have their adjoining ends formed integral with the rubber sheets 3 and 3' the cushion shown herein is made up of two sections secured together i which are also fixed together; while the outward or remote ends of said bellows are similarly secured to fabric sheets 8 and 8'. This arrangemerit assures the retention of the bellows in their properly spaced positions, and it prevents any relative lateral movement between the various bellows or any shifting of the bellows laterally of the sheets.

Fig. 2 discloses in plan view the assembly with elements 6, l, 8, and 9 removed showing the upper resilient chambers 2 on upper sheet 3, and connecting passages 5. As illustrated in said Fig. 2, this disclosed form utilizes four difierent sizes of resilient chambers. These include chambers ll of the smallest diameter, chambers I2 of the next larger diameter, chambers l3 of still larger diameter, and chambers 14 of the largest diameter, the arrangement of the four sizes of resilient chambers being also shown in this Fig. 2. The resilient chambers of the largest diameter are grouped together and located midway between the sides of the cushion and slightly nearer to the rear; resilient chambers H of the smallest diameter occupy positions along the front edge of the cushion; and the resilient chambers 12 and 13 of intermediate sizes are variously positioned with respect to the largest and smallest resilient chambers.

Since the interiors of all the resilient chambers are interconnected, the fluid pressure at any given chambers and passages.

tegrally with each of said resilient sheets and positioned substantially perpendicular thereto so that each bellows of one resilient sheet is aligned with the corresponding bellows on the other sheet to form a plurality of fluid filled resilient chambers, a plurality of passages connecting the interiors of said resilient chambers together, and means for supplying fluid to the interiors of said 3. In a cushion construction, a plurality of fluid filled resilient chambers of different effective diameters, passages connecting the interiors of all of said chambers, a pair of fabric sheets to which the outward ends of said resilient chambers are affixed, additional sheet means connected to all of said chambers, substantially midway forms a construction pattern found to be most suitable in minimizing fatigue. This-pattern is in accordance with the; principle that the local supporting forces should .be proportional to the corresponding local forces applied to the cushion due to the Weight of theuser.

-It is notentirely necessary vin utilizing my invention to use resilient Zchambers of difierent diameters. Resilient chambers of the same effec tive diameters could. be used instead toaccomplish the desired results by grouping 'such chambers close together where the applied local load will be relatively great and by spreading. these chambers farther apart where the applied local load will be relatively light.

While I have described particular of my invention, it'is to be understood that I do not wish to be restricted thereto and that I intend to cover all modifications thereof which would be apparent to one 'skilled'in the art and which come within the spirit and scope of the appended claims.

I claim:

.1. In a cushion construction a pair of juxtaposed resilient sheets secured together, fluid filled resilient bellows of different effective size and resisting force constructed integrally with each of embodiments between said fabric sheets, said pair of fabric sheets together with said intermediate sheet means serving to retain the chambers against relative lateral movement, a pair of pads positioned adjacent the exterior surfaces of said fab-,

ric sheets, and a cover completely enclosing said resilient chambers, fabric sheets, pads, and passages.

1 4. A resilient cushion construction comprising, a plurality of fluid filled chambers-each having opposed substantially parallel circular endsand a sidewall formed by a revolution of corrugated resilient material about an axis passing centrally through said circular ends and eachadapted to resiliently resist load in opposite directions along 2 the axis thereof, said chambers all being oriented in their load resisting directions, a yieldable fabric pad aiiixed to 'the opposite circular ends of said chambers for distributing a concentrated load over 'more than on'e'of said chambers and for supporting said chambers in their oriented direction, and passage means connecting the interior of all of said chambers with a fluid inlet, said passage means being formed in a sheet sub ,stantially midway between said yieldable pads and made integral with the side Wall of all of said chambers to-retai'n the chambers against relative lateral movement.

' HENRY L. BURNS.

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

UNITED STATES PATENTS Number Name Date 1,640,618 Sampson Aug. 20, 1927 2,028,060 Gilbert Jan. 14, 1936 2,150,747 Naulty Mar. 14, 1939 2,350,711 Amos June 6, 1944 2,359,318 Lay et a1. Oct. 3, 1944 FOREIGN PATENTS Number Country Date 376,291 Great Britain July 4, 1932 794,573

France Dec. 12, 1935

US2434641A 1946-02-20 1946-02-20 Resilient seat cushion Expired - Lifetime US2434641A (en)

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Cited By (74)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2588823A (en) * 1949-04-25 1952-03-11 Glassman Jacob Rubber foam cushion
US2668582A (en) * 1948-10-09 1954-02-09 Goodfellow Sumner Armrest for vehicle seats
US2784773A (en) * 1953-11-23 1957-03-12 David L Rowland Weatherproof cushion
US2814053A (en) * 1954-09-02 1957-11-26 Burton Dixie Corp Inflatable mattress
US2822554A (en) * 1955-01-07 1958-02-11 Ohio Commw Eng Co Variable density foam cushions, pillow and the like
US3026547A (en) * 1959-08-17 1962-03-27 Dollinger Corp Combination boat fender and life preserver
US3083381A (en) * 1960-03-01 1963-04-02 Theodore L Bailey Mattress construction
US3171691A (en) * 1963-07-17 1965-03-02 Ford Motor Co Seat construction
US3578381A (en) * 1969-02-20 1971-05-11 Monsanto Co Controlled motion amusement device
US3705429A (en) * 1969-01-09 1972-12-12 Walter P Nail Inflatable load supporting structures
US4109333A (en) * 1977-02-23 1978-08-29 The Raymond Lee Organization, Inc. Air stabilized water mattress
EP0201850A2 (en) * 1985-05-06 1986-11-20 GRAEBE, Robert H. Foot and elbow cushion device
US4741057A (en) * 1985-07-12 1988-05-03 Nat-Relax S.A.R.L. Relaxation mattress
US4827546A (en) * 1988-02-09 1989-05-09 Milutin Cvetkovic Fluid mattress
US4852195A (en) * 1987-10-16 1989-08-01 Schulman David A Fluid pressurized cushion
US4860397A (en) * 1988-08-17 1989-08-29 Gaymar Industries, Inc. Pneumatic cushion
US4875548A (en) * 1985-05-09 1989-10-24 Peter Lorsbach Jump rescue apparatus
US4895352A (en) * 1989-01-09 1990-01-23 Simmons Company Mattress or cushion spring array
US4907307A (en) * 1988-03-02 1990-03-13 Weitzler David A Support structure
US5014365A (en) * 1989-01-23 1991-05-14 Maxpro Helmets, Inc. Gas-fitted protective helmet
WO1992005729A1 (en) * 1990-10-09 1992-04-16 Larson Lynn D Waterbed mattress with spring insert
WO1992007492A1 (en) * 1990-11-01 1992-05-14 Graebe Robert H Zoned cellular cushion with flexible flaps containing inflating manifold
US5159725A (en) * 1992-03-11 1992-11-03 Larson Lynn D Waterbed mattress with bellows spring insert
US5243722A (en) * 1992-04-06 1993-09-14 Ignaty Gusakov Fluid cushion
US5426799A (en) * 1989-06-08 1995-06-27 Superba S.A. Mattress system
US5502855A (en) * 1990-11-01 1996-04-02 Graebe; Robert H. Zoned cellular cushion
WO1996012426A1 (en) * 1994-10-25 1996-05-02 Crown Therapeutics, Inc. Vacuum/heat formed cushion
US5558398A (en) * 1993-11-08 1996-09-24 Santos; James P. Self-adjusting seating system
US5638565A (en) * 1995-04-07 1997-06-17 Dielectrics Industries Inflatable cushion
US5640731A (en) * 1993-11-08 1997-06-24 Toedter; Manfred Air mattress
US5836027A (en) * 1997-04-25 1998-11-17 Leventhal; Robert D. Integrated matrix bedding system
US5893184A (en) * 1997-01-10 1999-04-13 Comfortex Health Care Surfaces Pressure reducing backrest cushion with selective pressure point relief
US6189168B1 (en) * 2000-02-29 2001-02-20 Kurtis F. Graebe Air cell pillow
US6510573B1 (en) 2000-02-29 2003-01-28 Kurtis F. Grabe Air cushion with independently adjustable resilient zones
US20030028971A1 (en) * 2001-07-10 2003-02-13 Chaffee Robert B. Configurable inflatable support devices
US6519797B1 (en) * 1999-08-10 2003-02-18 Dynamic Contours Llc Self adjusting, contouring cushioning system
US6532613B2 (en) * 2001-06-07 2003-03-18 Berry, Iv Russell M. Three dimensional star shaped pliable chair
US6564410B2 (en) 2001-01-18 2003-05-20 Roho, Inc. Valve for zoned cellular cushion
US20030192123A1 (en) * 2002-04-11 2003-10-16 Chaffee Robert B. Body support surface comfort device
US20030200611A1 (en) * 2002-04-25 2003-10-30 Chaffee Robert B Fluidic chambers fluidly connected by one way valve and method for use
US6687936B2 (en) 2001-01-18 2004-02-10 Roho, Inc. Valve for zoned cellular cushion
US6739009B2 (en) * 2000-05-26 2004-05-25 Del Drago Marcantonio Supporting device, notably mattress, mattress support or for a seat
US20050166326A1 (en) * 2002-04-11 2005-08-04 Chaffee Robert B. Body support, comfort device
US6941602B2 (en) 1999-08-10 2005-09-13 Dynamic Contours, Llc Self adjusting, contouring cushioning system
US20060076202A1 (en) * 2002-10-31 2006-04-13 Kyoraku Co., Ltd. Impact absorbing member for vehicle
US20060257332A1 (en) * 2005-05-13 2006-11-16 Pierro Francesco D Anticaries compositions containing phaseolamin
US20070033739A1 (en) * 2005-08-12 2007-02-15 Austen Timothy F Inflatable support system having thermoplastic polyurethane construction
US20080030062A1 (en) * 2006-07-19 2008-02-07 Prust Peter C Seat Cushion
WO2008091455A2 (en) * 2007-01-22 2008-07-31 L & P Property Management Company Bedding or seating product having inflatable concentric air bladders
US20090025149A1 (en) * 2007-07-29 2009-01-29 Chan Jui-Peng Adjusting Structure for Adjusting the Rise and Fall of a Mattress by Air Spring
US20090119846A1 (en) * 2004-04-30 2009-05-14 Meyer Eric R Pressure relief surface
US7574760B2 (en) * 2005-01-05 2009-08-18 Skydex Technologies, Inc. Cushioning system with parallel sheets having opposing indentions for linear deflection under load
US20100295221A1 (en) * 2009-05-20 2010-11-25 Sp1Ke Inc. Energy Absorption and Distribution Material
US20110133539A1 (en) * 2008-08-04 2011-06-09 Hirokazu Shoji Shock absorbing apparatus for aircraft seat
US8307481B2 (en) 2010-10-12 2012-11-13 Balluga Ltd Body support platform
USD679058S1 (en) 2011-07-01 2013-03-26 Intellectual Property Holdings, Llc Helmet liner
USD683079S1 (en) 2011-10-10 2013-05-21 Intellectual Property Holdings, Llc Helmet liner
US20130133138A1 (en) * 2011-11-11 2013-05-30 Skydex Technologies, Inc. Cellular Cushion
WO2013123713A1 (en) * 2012-02-22 2013-08-29 喜临门家具股份有限公司 Longitudinal and transverse, combined-type pneumatic spring
US20130291306A1 (en) * 2011-09-02 2013-11-07 Backjoy Orthotics, Llc Cushion device
US20130326819A1 (en) * 2011-06-07 2013-12-12 Skydex Technologies, Inc. Collapsible Layered Cushion
US8726424B2 (en) 2010-06-03 2014-05-20 Intellectual Property Holdings, Llc Energy management structure
US8826478B2 (en) 2000-05-17 2014-09-09 Robert B. Chaffee Inflatable device forming mattresses and cushions
USD733972S1 (en) 2013-09-12 2015-07-07 Intellectual Property Holdings, Llc Helmet
US9125493B2 (en) 2012-01-31 2015-09-08 Backjoy Orthotics, Llc Seat cushion with flexible contouring
US9279510B2 (en) 2000-05-17 2016-03-08 Robert B. Chaffee Valve with electromechanical device for actuating the valve
US9279430B2 (en) 2000-05-17 2016-03-08 Robert B. Chaffee Pump with axial conduit
US9320311B2 (en) 2012-05-02 2016-04-26 Intellectual Property Holdings, Llc Helmet impact liner system
US20160138275A1 (en) * 2013-04-18 2016-05-19 Viconic Sporting Llc Surface underlayment system with interlocking resilient anti-slip shock tiles
US9516910B2 (en) 2011-07-01 2016-12-13 Intellectual Property Holdings, Llc Helmet impact liner system
US9609957B1 (en) * 2015-09-22 2017-04-04 David D. Todd Portable foldable bed
US9635897B2 (en) 2012-01-31 2017-05-02 Backjoy Orthotics, Llc Cushion items with flexible contouring
US9743701B2 (en) 2013-10-28 2017-08-29 Intellectual Property Holdings, Llc Helmet retention system
US9894953B2 (en) 2012-10-04 2018-02-20 Intellectual Property Holdings, Llc Helmet retention system

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US1640618A (en) * 1925-04-23 1927-08-30 Sampson Martin Corp Pneumatic cushion, mattress, and the like
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US2028060A (en) * 1935-09-07 1936-01-14 Gilbert Eskell Protector
FR794573A (en) * 1934-09-14 1936-02-20 App Orthopediques Unic resilient means for cushions, seats, mattresses and similar articles
US2150747A (en) * 1936-07-23 1939-03-14 James N Naulty Cushion
US2350711A (en) * 1941-12-12 1944-06-06 Timothy B Mccarthy Bellows cushion for upholstery
US2359318A (en) * 1941-06-12 1944-10-03 Walter E Lay Spring construction and method of assembling

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1640618A (en) * 1925-04-23 1927-08-30 Sampson Martin Corp Pneumatic cushion, mattress, and the like
GB376291A (en) * 1931-04-02 1932-07-04 Francis Henry Carter Improvements in resilient surfaces for beds, seats, cushions and upholstery
FR794573A (en) * 1934-09-14 1936-02-20 App Orthopediques Unic resilient means for cushions, seats, mattresses and similar articles
US2028060A (en) * 1935-09-07 1936-01-14 Gilbert Eskell Protector
US2150747A (en) * 1936-07-23 1939-03-14 James N Naulty Cushion
US2359318A (en) * 1941-06-12 1944-10-03 Walter E Lay Spring construction and method of assembling
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Cited By (107)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668582A (en) * 1948-10-09 1954-02-09 Goodfellow Sumner Armrest for vehicle seats
US2588823A (en) * 1949-04-25 1952-03-11 Glassman Jacob Rubber foam cushion
US2784773A (en) * 1953-11-23 1957-03-12 David L Rowland Weatherproof cushion
US2814053A (en) * 1954-09-02 1957-11-26 Burton Dixie Corp Inflatable mattress
US2822554A (en) * 1955-01-07 1958-02-11 Ohio Commw Eng Co Variable density foam cushions, pillow and the like
US3026547A (en) * 1959-08-17 1962-03-27 Dollinger Corp Combination boat fender and life preserver
US3083381A (en) * 1960-03-01 1963-04-02 Theodore L Bailey Mattress construction
US3171691A (en) * 1963-07-17 1965-03-02 Ford Motor Co Seat construction
US3705429A (en) * 1969-01-09 1972-12-12 Walter P Nail Inflatable load supporting structures
US3578381A (en) * 1969-02-20 1971-05-11 Monsanto Co Controlled motion amusement device
US4109333A (en) * 1977-02-23 1978-08-29 The Raymond Lee Organization, Inc. Air stabilized water mattress
EP0201850A2 (en) * 1985-05-06 1986-11-20 GRAEBE, Robert H. Foot and elbow cushion device
EP0201850A3 (en) * 1985-05-06 1988-09-28 Robert H. Graebe Foot and elbow cushion device
US4875548A (en) * 1985-05-09 1989-10-24 Peter Lorsbach Jump rescue apparatus
US4741057A (en) * 1985-07-12 1988-05-03 Nat-Relax S.A.R.L. Relaxation mattress
US4852195A (en) * 1987-10-16 1989-08-01 Schulman David A Fluid pressurized cushion
US4827546A (en) * 1988-02-09 1989-05-09 Milutin Cvetkovic Fluid mattress
US4907307A (en) * 1988-03-02 1990-03-13 Weitzler David A Support structure
US4860397A (en) * 1988-08-17 1989-08-29 Gaymar Industries, Inc. Pneumatic cushion
US4895352A (en) * 1989-01-09 1990-01-23 Simmons Company Mattress or cushion spring array
US5014365A (en) * 1989-01-23 1991-05-14 Maxpro Helmets, Inc. Gas-fitted protective helmet
US5426799A (en) * 1989-06-08 1995-06-27 Superba S.A. Mattress system
WO1992005729A1 (en) * 1990-10-09 1992-04-16 Larson Lynn D Waterbed mattress with spring insert
WO1992007492A1 (en) * 1990-11-01 1992-05-14 Graebe Robert H Zoned cellular cushion with flexible flaps containing inflating manifold
US5502855A (en) * 1990-11-01 1996-04-02 Graebe; Robert H. Zoned cellular cushion
US5596781A (en) * 1992-02-20 1997-01-28 Crown Therapeutics, Inc. Vacuum/heat formed cushion with pyramidal, inflatable cells
US5159725A (en) * 1992-03-11 1992-11-03 Larson Lynn D Waterbed mattress with bellows spring insert
US5243722A (en) * 1992-04-06 1993-09-14 Ignaty Gusakov Fluid cushion
US5558398A (en) * 1993-11-08 1996-09-24 Santos; James P. Self-adjusting seating system
US5640731A (en) * 1993-11-08 1997-06-24 Toedter; Manfred Air mattress
WO1996012426A1 (en) * 1994-10-25 1996-05-02 Crown Therapeutics, Inc. Vacuum/heat formed cushion
US5638565A (en) * 1995-04-07 1997-06-17 Dielectrics Industries Inflatable cushion
US6209159B1 (en) * 1997-01-10 2001-04-03 Comfortex Health Care Surfaces Pressure reducing cushion with selective pressure point relief
US5893184A (en) * 1997-01-10 1999-04-13 Comfortex Health Care Surfaces Pressure reducing backrest cushion with selective pressure point relief
US5836027A (en) * 1997-04-25 1998-11-17 Leventhal; Robert D. Integrated matrix bedding system
US6519797B1 (en) * 1999-08-10 2003-02-18 Dynamic Contours Llc Self adjusting, contouring cushioning system
US6941602B2 (en) 1999-08-10 2005-09-13 Dynamic Contours, Llc Self adjusting, contouring cushioning system
US6715171B2 (en) 2000-02-29 2004-04-06 Kurtis F. Grabe Air cushion with independently adjustable resilient zones
US6510573B1 (en) 2000-02-29 2003-01-28 Kurtis F. Grabe Air cushion with independently adjustable resilient zones
US6189168B1 (en) * 2000-02-29 2001-02-20 Kurtis F. Graebe Air cell pillow
US9279510B2 (en) 2000-05-17 2016-03-08 Robert B. Chaffee Valve with electromechanical device for actuating the valve
US8826478B2 (en) 2000-05-17 2014-09-09 Robert B. Chaffee Inflatable device forming mattresses and cushions
US9279430B2 (en) 2000-05-17 2016-03-08 Robert B. Chaffee Pump with axial conduit
US6739009B2 (en) * 2000-05-26 2004-05-25 Del Drago Marcantonio Supporting device, notably mattress, mattress support or for a seat
US6687936B2 (en) 2001-01-18 2004-02-10 Roho, Inc. Valve for zoned cellular cushion
US6564410B2 (en) 2001-01-18 2003-05-20 Roho, Inc. Valve for zoned cellular cushion
US6532613B2 (en) * 2001-06-07 2003-03-18 Berry, Iv Russell M. Three dimensional star shaped pliable chair
US20030028971A1 (en) * 2001-07-10 2003-02-13 Chaffee Robert B. Configurable inflatable support devices
US9737153B2 (en) 2001-07-10 2017-08-22 Robert B. Chaffee Configurable inflatable support devices
US8434177B2 (en) 2001-07-10 2013-05-07 Robert B. Chaffee Configurable inflatable support devices
US20090049617A1 (en) * 2001-07-10 2009-02-26 Chaffee Robert B Configurable inflatable support devices
US7328472B2 (en) 2001-07-10 2008-02-12 Chaffee Robert B Configurable inflatable support devices
US20050166326A1 (en) * 2002-04-11 2005-08-04 Chaffee Robert B. Body support, comfort device
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