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US3864766A - Self-adjusting contour pillow - Google Patents

Self-adjusting contour pillow Download PDF

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Publication number
US3864766A
US3864766A US402197A US40219773A US3864766A US 3864766 A US3864766 A US 3864766A US 402197 A US402197 A US 402197A US 40219773 A US40219773 A US 40219773A US 3864766 A US3864766 A US 3864766A
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US
United States
Prior art keywords
pillow
air
valve member
envelope
body portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US402197A
Inventor
Jr Ernest Prete
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ancra International LLC
Original Assignee
Ancra Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ancra Corp filed Critical Ancra Corp
Priority to US402197A priority Critical patent/US3864766A/en
Priority to GB2316674A priority patent/GB1436485A/en
Application granted granted Critical
Publication of US3864766A publication Critical patent/US3864766A/en
Assigned to ANCRA INTERNATIONAL CORPORATION reassignment ANCRA INTERNATIONAL CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ANCRA CORPORATION
Assigned to STATE STREET BANK AND TRUST COMPANY OF CONNECTICUT, NATIONAL ASSOCIATION reassignment STATE STREET BANK AND TRUST COMPANY OF CONNECTICUT, NATIONAL ASSOCIATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ANCRA INTERNATIONAL CORPORATION
Assigned to BARCLAYS BUSINESS CREDIT, INC., A CORP. OF CONNECTICUT reassignment BARCLAYS BUSINESS CREDIT, INC., A CORP. OF CONNECTICUT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ANCRA INTERNATIONAL CORPORATION, A CORP. OF CALIFORNIA
Anticipated expiration legal-status Critical
Assigned to ANCRA INTERNATIONAL LLC. reassignment ANCRA INTERNATIONAL LLC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ANCRA INTERNATIONAL CORPORATION, F.K.A. ANCRA CORPORATION
Assigned to STATE STREET BANK & TRUST CORPORATE TRUST DEPT. reassignment STATE STREET BANK & TRUST CORPORATE TRUST DEPT. SECURITY AGREEMENT Assignors: ANCRA INTERNATIONAL, L.L.C.
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
    • A47G9/10—Pillows
    • A47G9/1027—Details of inflatable pillows
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/081—Fluid mattresses or cushions of pneumatic type
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/18—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays in combination with inflatable bodies

Definitions

  • the filler which may be of a material such as polyurethane foam, substantially fills the envelope.
  • the envelope includes a flap portion extending outwardly from an edge thereof, this flap portion having an aperture formed therein in which an air valve member is removably mounted. With actuation of the air valve member and the application of pressure to the pillow, the contour of the pillow will assume the shape of an object applying the force thereto. The valve is closed once this contour has been assumed and the pillow retains this contour until the valve is opened, whereupon the original shape of the pillow is resumed.
  • the device of the present invention provides an improvement over such prior art pillow and cushion devices in providing a simple and economical construction wherein the control valve utilized can readily be removed for repair or replacement. Further, the control valve utilized in the device of the present invention is located on a flap portion which is an appendage to the main cushion portions of the pillow so that it does not interfere with the use of the pillow and is in a spot where it can be readily operated by the user.
  • the use of a separable control valve in the device of the invention further facilitates and economizes manufacture of the device.
  • FIG. 1 is a perspective view of a preferred embodiment of the invention
  • FIG. 2 is a cross sectional view taken along the plane indicated by 2-2 in FIG. 1;
  • FIG. 3 is a view taken along the plane indicated by 3-3 in FIG. 2;
  • FIG. 4 is an exploded view showing the valve member of the preferred embodiment removed from the enve' lope.
  • FIG. 5 is an elevational view showing the valve of the preferred embodiment in the open position.
  • the device of the invention is as follows: A flexible envelope fabricated of a material substantially impervious to air, such as a polyvinyl chloride plastic, has contained therein a filler of a resilient material which is highly permeable to air, such as a suitable polyurethane foam.
  • the envelope includes a flap portion which may be in the general shape of a bell which extends outwardly from the edge thereof.
  • a manually operable air valve member is removably mounted in an aperture formed in this flap portion, this valve member being retained in air-sealed relationship with the envelope.
  • Envelope II Contained within air tight flexible envelope I1 is a filler I2.
  • Envelope II is fabricated of a material substantially impervious to air, such as a polyvinyl chloride plastic.
  • the tiller I2 is of a resilient material which is highly permeable to air, such as a suitable polyurethane foam.
  • Envelope II has a flap portion lla which extends outwardly from an edge thereof and is in the general shape of a bell.
  • Flap portion Ila has an aperture 15 in one of the sides thereof, as can best be seen in FIG. 4. Fixedly attached to the edge of aperture 15 is a grommet 13.
  • Air valve 14 has an annular groove formed in the body portion 16 thereof. Air valve 14 is removably attached to flap portion lla by snapping it into position with grommet 13 fitted within groove l6ax to provide a seal between the valve body and the envelope.
  • the base portion 16b of the valve body has an annular portion with a plurality of apertures 16c formed therein.
  • Control button 18 is resiliently urged upwardly by spring 20 which is retained within post 16d.
  • An O-ring 21 is retained in a groove formed around the periphery of button 18 and provides a seal between the button and the body portion of the valve when the button is in the unactuated condition as shown in FIG. 2.
  • O-ring 21 is moved away from valve body 16 and thus air is permitted to pass through the valve.
  • the button is released and the pillow retains the contour assumed in response to the pressure applied by the users body.
  • the pillow can be restored to its original fully inflated condition by depressing valve 18 without the application of pressure on the pillow.
  • the device of this invention thus provides a simple yet highly effective contour pillow apparatus which has the advantages of economical construction, facility of utilization, and in which the valve unit can be readily removed for repair or replacement.
  • a self-adjusting contour pillow comprising:
  • a flexible envelope fabricated of material substan tially impervious to air, said envelope including a flap portion extending outwardly from the edge thereof;
  • a manually operable air valve member for controlling the flow of air between the interior of said envelope and the ambient atmosphere
  • said flap portion having an aperture formed therein, said aperture having sealing means running around the perimeter thereof for removably receiving said valve member in an air sealed relationship therewith;
  • said air valve member comprises a body portion having an annular groove formed therein, said sealing means comprising an annular grommet fixedly attached to the perimeter of said flap portion aperture, said body portion being fitted in said aperture substantially in the shape of a bell.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Pulmonology (AREA)
  • Bedding Items (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)

Abstract

Contained within an envelope fabricated of material which is substantially impervious to air, such as a suitable vinyl, is a resilient filler which is highly permeable to air. The filler, which may be of a material such as polyurethane foam, substantially fills the envelope. The envelope includes a flap portion extending outwardly from an edge thereof, this flap portion having an aperture formed therein in which an air valve member is removably mounted. With actuation of the air valve member and the application of pressure to the pillow, the contour of the pillow will assume the shape of an object applying the force thereto. The valve is closed once this contour has been assumed and the pillow retains this contour until the valve is opened, whereupon the original shape of the pillow is resumed.

Description

[ Feb. 11, 1975 Prete, Jr.
[ 1 SELF-ADJUSTING CONTOUR PILLOW [75] lnventor: Ernest Prete, Jr., Woodland Hills,
Calif.
[73] Assignee: Ancra Corporation, El Segundo,
Calif.
[22] Filed: Oct. 1, 1973 [21] Appl. No.: 402,197
[52] U.S. Cl. 5/337, 5/348 R [51] Int. Cl. A47c 27/08 [58] Field of Search 5/337, 338, 348 R, 349,
[56] References Cited UNITED STATES PATENTS 2,072,816 3/1937 Hil1........ 251/321 2,997,100 8/1961 Morris... 5/348 R 3,007,485 11/1961 Barker 137/4542 3,192,540 7/1965 Swank 5/349 3,355,143 11/1967 Mueller 251/321 3,729,754 5/1973 Hastings 5/348 R Primary Examiner-Paul R. Gilliam Assistant Examiner-Andrew M. Calvert Attorney, Agent, or FirmEdward A. Sokolski [57] ABSTRACT Contained within an envelope fabricated of material which is substantially impervious to air, such as a suitable vinyl, is a resilient filler which is highly permeable to air. The filler, which may be of a material such as polyurethane foam, substantially fills the envelope. The envelope includes a flap portion extending outwardly from an edge thereof, this flap portion having an aperture formed therein in which an air valve member is removably mounted. With actuation of the air valve member and the application of pressure to the pillow, the contour of the pillow will assume the shape of an object applying the force thereto. The valve is closed once this contour has been assumed and the pillow retains this contour until the valve is opened, whereupon the original shape of the pillow is resumed.
3 Claims, 5 Drawing Figures SELF-ADJUSTING CONTOUR PILLOW This application relates to foam pillows and the like, and more particularly to such a pillow which utilizes air pressure in assuming a contour in accordance with the shape of an object applying force thereto.
Cushions have been developed in the prior art which respond to the pressure applied by the body of the user and assume and retain a contour in accordance with this pressure. These devices often utilize air valving mechanisms in achieving this end result. Many of these prior art devices, however, are overly expensive in their construction and do not provide the facility of utilization that would be desired.
The device of the present invention provides an improvement over such prior art pillow and cushion devices in providing a simple and economical construction wherein the control valve utilized can readily be removed for repair or replacement. Further, the control valve utilized in the device of the present invention is located on a flap portion which is an appendage to the main cushion portions of the pillow so that it does not interfere with the use of the pillow and is in a spot where it can be readily operated by the user. The use of a separable control valve in the device of the invention further facilitates and economizes manufacture of the device.
It is therefore an object of this invention to provide an improved self-adjusting contour pillow of highly economical construction.
It is still another object of this invention to provide a self-adjusting contour pillow which is easier to fabricate and repair than prior art devices of this type.
It is still a further object of this invention to provide a self-adjusting contour pillow in which the control valve is located for easy operation by the user.
Other objects of this invention will become apparent as the description proceeds in connection with the accompanying drawings, of which:
FIG. 1 is a perspective view of a preferred embodiment of the invention;
FIG. 2 is a cross sectional view taken along the plane indicated by 2-2 in FIG. 1;
FIG. 3 is a view taken along the plane indicated by 3-3 in FIG. 2;
FIG. 4 is an exploded view showing the valve member of the preferred embodiment removed from the enve' lope; and
FIG. 5 is an elevational view showing the valve of the preferred embodiment in the open position.
Briefly described, the device of the invention is as follows: A flexible envelope fabricated of a material substantially impervious to air, such as a polyvinyl chloride plastic, has contained therein a filler of a resilient material which is highly permeable to air, such as a suitable polyurethane foam. The envelope includes a flap portion which may be in the general shape of a bell which extends outwardly from the edge thereof. A manually operable air valve member is removably mounted in an aperture formed in this flap portion, this valve member being retained in air-sealed relationship with the envelope. With the application of force against the pillow by the users body while the user is actuating the valve to keep it open, the pillow will assume the counter of this body portion and retain this contour when the valve is closed. The pillow can be restored to its normal shape by opening the valve while no pressure is being applied against the pillow.
Referring now to the figures, a preferred embodiment of the invention is illustrated. Contained within air tight flexible envelope I1 is a filler I2. Envelope II is fabricated of a material substantially impervious to air, such as a polyvinyl chloride plastic. while the tiller I2 is of a resilient material which is highly permeable to air, such as a suitable polyurethane foam. Envelope II has a flap portion lla which extends outwardly from an edge thereof and is in the general shape of a bell. Flap portion Ila has an aperture 15 in one of the sides thereof, as can best be seen in FIG. 4. Fixedly attached to the edge of aperture 15 is a grommet 13. Air valve 14 has an annular groove formed in the body portion 16 thereof. Air valve 14 is removably attached to flap portion lla by snapping it into position with grommet 13 fitted within groove l6ax to provide a seal between the valve body and the envelope.
The base portion 16b of the valve body has an annular portion with a plurality of apertures 16c formed therein. Slidably mounted over annular post portion 16d of the valve body is control button 18. Control button 18 is resiliently urged upwardly by spring 20 which is retained within post 16d. An O-ring 21 is retained in a groove formed around the periphery of button 18 and provides a seal between the button and the body portion of the valve when the button is in the unactuated condition as shown in FIG. 2. When the button is manually depressed, as shown in FIG. 5, O-ring 21 is moved away from valve body 16 and thus air is permitted to pass through the valve.
In using the device, one may lean back on the pillow while depressing button I8 to release air from the pillow envelope in response to the pressure applied by the user's body thereagainst. When the pillow has been compressed as desired. the button is released and the pillow retains the contour assumed in response to the pressure applied by the users body.The pillow can be restored to its original fully inflated condition by depressing valve 18 without the application of pressure on the pillow.
The device of this invention thus provides a simple yet highly effective contour pillow apparatus which has the advantages of economical construction, facility of utilization, and in which the valve unit can be readily removed for repair or replacement.
While the invention has been described and illustrated in detail, it is to be clearly understood that this is intended by way of illustration and example only and is not to be taken by way of limitation, the spirit and scope of this invention being limited only by the terms of the following claims:
I claim:
I. A self-adjusting contour pillow comprising:
a flexible envelope fabricated of material substan tially impervious to air, said envelope including a flap portion extending outwardly from the edge thereof;
a manually operable air valve member for controlling the flow of air between the interior of said envelope and the ambient atmosphere;
said flap portion having an aperture formed therein, said aperture having sealing means running around the perimeter thereof for removably receiving said valve member in an air sealed relationship therewith; and
resilient filler means contained within and substantially filling said envelope, said filler means being highly permeable to air;
whereby when said air valve member is opened while said pillow is simultaneously being compressed in response to a body portion having a particular cntour, the pillow retains said contour when the valve member is closed:
said air valve member comprises a body portion having an annular groove formed therein, said sealing means comprising an annular grommet fixedly attached to the perimeter of said flap portion aperture, said body portion being fitted in said aperture substantially in the shape of a bell. I. i 1! i I

Claims (3)

1. A self-adjusting contour pillow comprising: a flexible envelope fabricated of material substantially impervious to air; said envelope including a flap portion extending outwardly from the edge thereof; a manually operable air valve member for controlling the flow of air between the interior of said envelope and the ambient atmosphere; said flap portion having an aperture formed therein, said aperture having sealing means running around the perimeter thereof for removably rEceiving said valve member in an air sealed relationship therewith; and resilient filler means contained within and substantially filling said envelope, said filler means being highly permeable to air; whereby when said air valve member is opened while said pillow is simultaneously being compressed in response to a body portion having a particular contour, the pillow retains said contour when the valve member is closed: said air valve member comprises a body portion having an annular groove formed therein, said sealing means comprising an annular grommet fixedly attached to the perimeter of said flap portion aperture, said body portion being fitted in said aperture with said grommet matingly engaging the groove.
2. The pillow of claim 1 wherein said air valve member further includes a button slidably mounted in said body portion, spring means for urging said button outwardly from said body portion and an O-ring mounted on the periphery of said button to form a seal between the body portion and the button, whereby when the button is depressed the O-ring is moved to break said seal.
3. The pillow of claim 1 wherein said flap portion is substantially in the shape of a bell.
US402197A 1973-10-01 1973-10-01 Self-adjusting contour pillow Expired - Lifetime US3864766A (en)

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US402197A US3864766A (en) 1973-10-01 1973-10-01 Self-adjusting contour pillow
GB2316674A GB1436485A (en) 1973-10-01 1974-05-23 Self-adjusting contour pillows mattresses or cushions

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Cited By (53)

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US3965508A (en) * 1975-01-24 1976-06-29 Ronald Bruce Hunter Seating cushion
US4149919A (en) * 1974-12-10 1979-04-17 Lea James M Method of making a self-inflating air mattress
US4694515A (en) * 1984-12-06 1987-09-22 Parma Corporation Self-inflatable air mattress in a foldable support
US4768247A (en) * 1988-03-14 1988-09-06 Beier John K Travel Pillow
US4930171A (en) * 1989-05-03 1990-06-05 International Healthcare Products, Inc. Contour retaining support cushion
US4965899A (en) * 1985-07-16 1990-10-30 Okamoto Industries,Inc. Air cushion for chair and chair utilizing the air cushion
US4995124A (en) * 1988-10-20 1991-02-26 Sustena, Inc. Constant pressure load bearing air chamber
US5033133A (en) * 1990-09-13 1991-07-23 Nissen Sports Academy, Inc. Seat cushion
US5117517A (en) * 1991-08-13 1992-06-02 Su Ping Hung Self inflating camping mattress
US5142717A (en) * 1988-10-20 1992-09-01 Sustena, Inc. Constant pressure load bearing air chamber
US5196242A (en) * 1991-05-29 1993-03-23 Vicino Robert K Self-inflating foam structure
US5231718A (en) * 1990-12-12 1993-08-03 Lumex, Inc. Combined cellular material and innerspring support system
US5259080A (en) * 1990-12-12 1993-11-09 Lumex, Inc. Damped air displacement support system
US5267363A (en) * 1989-07-25 1993-12-07 Chaffee Robert B Pneumatic support system
US5469592A (en) * 1993-06-16 1995-11-28 Johnson; Mark C. Geometrically efficient self-inflating seat cushion
WO1996013186A1 (en) * 1994-10-28 1996-05-09 Eric Stanley Cooling fluid container
WO1997019622A1 (en) * 1995-11-27 1997-06-05 Colin Segal Compressible body support device with means for inflation by air
US5682632A (en) * 1996-04-25 1997-11-04 Cotroneo; James L. Jaw thrust support
US5948013A (en) * 1996-07-16 1999-09-07 Swezey; Robert L. Self-inflating back pillow and cold therapy device
WO1999051899A1 (en) * 1998-04-06 1999-10-14 Archi Air Pty Limited Self-inflating cushion and valve therefor
US5971006A (en) * 1995-06-08 1999-10-26 Seigerschmidt; Helmut Inflatable cushion with a valve
US6012188A (en) * 1996-03-13 2000-01-11 Ooltewah Manufacturing Company Selectively deformable cushion
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US20030028971A1 (en) * 2001-07-10 2003-02-13 Chaffee Robert B. Configurable inflatable support devices
US6539568B2 (en) 2001-01-12 2003-04-01 Marion O. Lee, Jr. Orthotic pillow
US6591429B1 (en) * 1995-04-28 2003-07-15 Burlington Consolidated Limited Incorporation Physical protector
US6622326B2 (en) * 2001-07-23 2003-09-23 Kevin Richardson Inflatable pillow with pump
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
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US6694556B2 (en) 2001-02-15 2004-02-24 Hill-Rom Services, Inc. Self-inflating mattress
US6701559B2 (en) 2001-08-01 2004-03-09 Aero Products International, Inc. Increased height inflatable support system
US6767060B2 (en) 2001-05-03 2004-07-27 Pent Products, Inc. Article of furniture having a support member with an adjustable contour
US20050005363A1 (en) * 2001-10-30 2005-01-13 Gualtiero Giori Pressure adjustable foam support apparatus
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US20070033739A1 (en) * 2005-08-12 2007-02-15 Austen Timothy F Inflatable support system having thermoplastic polyurethane construction
US20070169274A1 (en) * 2001-08-01 2007-07-26 Boso Karen L Inflatable reinforcing chamber
US20080313813A1 (en) * 2005-12-15 2008-12-25 Roni Adiri Arm Support System And Components Thereof
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US20100174250A1 (en) * 2009-01-07 2010-07-08 Spiracur Inc. Reduced pressure therapy of the sacral region
US20110083280A1 (en) * 2009-10-13 2011-04-14 Woodlark Circle, Inc. Pneumatic Lift With Unidirectional Valve
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US8826478B2 (en) 2000-05-17 2014-09-09 Robert B. Chaffee Inflatable device forming mattresses and cushions
US8926575B2 (en) 2008-02-14 2015-01-06 Spiracur Inc. Devices and methods for treatment of damaged tissue
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
US20160128490A1 (en) * 2014-11-07 2016-05-12 Chien-chuan Cheng Automatic inflatable cushion
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US2997100A (en) * 1958-06-09 1961-08-22 Toyad Corp Pneumatic foam structures
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US3355143A (en) * 1965-10-19 1967-11-28 Waldorf Paper Prod Co Plastic valves
US3729754A (en) * 1971-08-13 1973-05-01 Canam Manuf & Packaging Ltd Inflatable air cushion article

Cited By (87)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4261776A (en) * 1972-01-10 1981-04-14 Lea James M Method of making self-inflating air mattress
US4149919A (en) * 1974-12-10 1979-04-17 Lea James M Method of making a self-inflating air mattress
US3965508A (en) * 1975-01-24 1976-06-29 Ronald Bruce Hunter Seating cushion
US4694515A (en) * 1984-12-06 1987-09-22 Parma Corporation Self-inflatable air mattress in a foldable support
US4965899A (en) * 1985-07-16 1990-10-30 Okamoto Industries,Inc. Air cushion for chair and chair utilizing the air cushion
US4768247A (en) * 1988-03-14 1988-09-06 Beier John K Travel Pillow
US4995124A (en) * 1988-10-20 1991-02-26 Sustena, Inc. Constant pressure load bearing air chamber
US5142717A (en) * 1988-10-20 1992-09-01 Sustena, Inc. Constant pressure load bearing air chamber
US4960304A (en) * 1989-05-03 1990-10-02 Internatinal Healthcare Products, Inc. Contour retaining back support cushion
US4930171A (en) * 1989-05-03 1990-06-05 International Healthcare Products, Inc. Contour retaining support cushion
US5267363A (en) * 1989-07-25 1993-12-07 Chaffee Robert B Pneumatic support system
US5367726A (en) * 1989-07-25 1994-11-29 Chaffee; Robert B. Pneumatic support system
US5033133A (en) * 1990-09-13 1991-07-23 Nissen Sports Academy, Inc. Seat cushion
WO1992004846A1 (en) * 1990-09-13 1992-04-02 Nissen George P Seat cushion
US5231718A (en) * 1990-12-12 1993-08-03 Lumex, Inc. Combined cellular material and innerspring support system
US5259080A (en) * 1990-12-12 1993-11-09 Lumex, Inc. Damped air displacement support system
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