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Publication numberUS3712674 A
Publication typeGrant
Publication dateJan 23, 1973
Filing dateApr 19, 1971
Priority dateApr 19, 1971
Publication numberUS 3712674 A, US 3712674A, US-A-3712674, US3712674 A, US3712674A
InventorsS Ando
Original AssigneeCentury Prod Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Inflatable chair
US 3712674 A
Abstract
An inflatable chair is provided, consisting of a plurality of separately inflatable portions or sections, and which is so constructed as to adhere to the floor by the suction of a portion of the chair against the floor, to thereby provide excellent stability of the chair, irrespective of how the weight of an occupant of the chair is shifted in relation to the chair.
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Claims  available in
Description  (OCR text may contain errors)

Elite 1 1 1 1 3,712,674

Ando A 1 Jan. 23, 1973 [541 INFLATABLE CHAIR 3,572,836 3/1971 Khanh ..297/456 [75] Inventor: Sutematsu Ando,Toky0,Japan 3,230,909 1/1966 [73] Assignee: Century Products, llnc., Cleveland, 2,738,835 3/1956 Ohm FOREIGN PATENTS OR APPLICATIONS Filedl April 19,1971 776,934 6/1957 GreatBritain ..297 1)1o.3 [21] App1.N0.: 135,033

Eames ..297/456 Primary Examiner-Casmir A. Nunberg Attorney-Isler & Ornstein [52] US. Cl ..297/456, 297/445, 5/327 R,

5/348 R, 297/DIG. 3 [57] ABSTRACT Ell l'ilifl;65161111275222? 53533222787512? inflatable chair is Provided 1018189114 297/445 456 5,327 ty of separately inflatable portrons or sections, and

which is so constructed as to adhere to the floor by the suction of a portion of the chair against the floor,

[56] References cued to thereby provide excellent stability of the chair, ir-

UNITED STATES PATENTS respective of how the weight of an occupantof the V chair is shifted in relation to the chair. 3,584,914 6/1971 Williams ..297/456 3,265,438 8/1966 Regan et a1 ..297/456 6 Claims, 3 Drawing Figures PATENTEDJAH 23 I975 R mm mm Wu m A M E U .S

: YBY. g 7 Q ATTORNEYS INFLATABLE CHAIR This invention relates generally to an inflatable chair, and more particularly to a chair of this character which is intended primarily for use by children.

In my US. design patent applications, Ser. Nos. 140,310; 141,081 and 141,257, I have disclosed various designs of inflatable chairs, intended primarily for use by children.

The present invention is concerned more particularly with the mechanical construction of such chairs.

A primary object of the invention is to provide a chair of the character described, which is so constructed as to adhere to the floor by the suction of a portion of the chair against the floor, thereby providing greater stability of the chair, irrespective of how the weight of an occupant of the chair is shifted in relation to the chair.

Another object of the invention is to provide a chair of the character described, which consists of a plurality of separately inflatable and independent portions or sectionsv Other objects and advantages of my invention will be apparent during the course of the following description.

In the accompanying drawing forming a part of this specification, and in which like numerals are employed to designate like parts throughout the same,

FIG. 1 is a side elevational view of a chair embodying the invention, and showing the base or floor-engaging portion or section of the chair in cross-section;

FIG. 2 is a fragmentary cross-sectional view of the chair on an enlarged scale, taken on the line 2-2 of FIG. 1, and showing the manner in which the seat portion or section of the chair is attached to the base or floor-engaging portion of the chair, and

FIG. 3 is a view similar to FIG. 2, but showing a modification of the invention.

Referring more particularly to FIGS. 1 and 2 of the drawing, the chair consists of three separate and independent parts or sections 1, 2 and 3.

The section 1 is an inflatable bag formed of a thin plastic material, and comprises a back or back-rest portion la and laterally-spaced arm or arm-rest portions lb, the back portion la being provided with a valve 4 through which air under pressure may be introduced to inflate the entire section 1.

The section 2 is an inflatable bag formed of a thin plastic material, and provides the seat of the chair. It consists of an upper circular portion 2a, a lower circular portion 2b, and an annular side wall portion 20. The portion 2a is heat-sealed at its peripheral edge to the upper edge of the portion 2c, and the portion 2b is provided at its periphery with a rebent flange 2d which is heat-sealed to the inner surface of the lower part of the portion 2c.

The section 1 is heat-sealed, at its lower edge, to the portion 2c of the section 2, and the portion 2c is provided at its rear portion with a valve 5, through which air under pressure may be introduced to inflate the section 2.

The section 3 is an inflatable air bag formed of a thin plastic material, and provides the floor-engaging portion of the chair. It is provided at its rear portion with a valve 6, through which air under pressure may be introduced to inflate the section 3. In its inflated condition, the section 3 is in the form of a hollow torus, of

somewhat larger external diameter than the section 2.

separate and independent'bags', which are separately inflatable, and the fact that the section 3 has a relatively small air volume, so that its change in shape, when inflated, is small, the chair, as a whole, has excellent stability.

When the chair is occupied, and weight is thus exerted on the seat section 2, a suction-cup effect takes place between the inflated section 3 and the floor, so that even when the weight of the occupant is exerted against the back-rest portion 1a of the section 1, the chair will not tip over.

Since the sections 2 and 3 are separate, any shift in weight will shift only the air in the seat section 2 and leave the section 3 unaffected. Thus, the shifts in weight will act only to cause the section 3 to grip the floor more tightly and to improve the stability of the chair.

In the modification shown in FIG, 3, the rebent flange 2d of the portion 2b of the section 2 is heatsealed to the under surface of the lower part of the portion 2c.

However, the flange 3a of the section 3 overlaps and extends beyond the flange 3b and this extension is heatsealed to the outer surface of the lower part of the section 2c of the section 2, in the area at which the flange 2d of the section 2 is heat-sealed to the portion 2c of the section 2, while the flange 3b is heat-sealed to that portion of the flange 3a which overlaps the flange 3b.

It is to be understood that the forms of my invention herewith shown and described, are to be taken as preferred examples of the same, and that various changes may be made in the shape, size and arrangement of parts thereof, without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described my invention, I claim:

1. In a chair of the character described, said chair comprising a plurality of inflatable sections, independent of each other and separately inflatable, one of said sections constituting the back and arms of the chair, another section of circular conformation constituting the seat of the chair, and another section constituting a floor-engaging member which, when inflated, is in the form of a hollow torus, having an external diameter greater than the diameter of said seat section when inflated.

2. A chair, as defined in claim 1, in which said sections are made of a plastic material, and the sections are heat-sealed to each other.

3. A chair, as defined in claim.2, wherein said seat section comprises a pair of vertically-spaced disc-like portions and an annular portion interconnecting said disc-like portions, and heat-sealed to the latter.

4. A chair, as defined in claim 1, wherein said floorengaging section consists of a strip of plastic material coiled to forma hollow torus, and having at least one flange-like portion which is heat-sealed to said seat section.

5. A chair, as defined in claim 1, wherein said floorengaging section consists of a strip of plastic material coiled to form a hollow torus and having flange-like portions which are heat-sealed to said seat section.

6. A chair, as defined in claim 1, wherein each sec- 5 tion is provided with a valve or inlet through which air under pressure may be introduced to inflate the sections.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2738835 *Dec 8, 1952Mar 20, 1956Herman Miller Furniture CompanUpholstery pad
US3142934 *Nov 8, 1962Aug 4, 1964Mehling Alfred JFlower or plant holder for tombstone
US3230909 *Mar 18, 1963Jan 25, 1966Swedish Crucible Steel CompanyStool or table
US3265438 *Nov 27, 1964Aug 9, 1966ReganSeat
US3572836 *Nov 12, 1968Mar 30, 1971Nguyen Manh KhanhInflatable piece of furniture
US3584914 *Jul 26, 1968Jun 15, 1971Williams Colin PInflatable furniture
GB776934A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4145083 *Jun 17, 1977Mar 20, 1979Urban Frank KTherapeutic chair for cerebral palsy child
US4272093 *Sep 17, 1979Jun 9, 1981Dennis FiliceSelf-propelled rolling toy
US4601667 *Jul 8, 1985Jul 22, 1986Hull Diane HGas-inflatable, floatable portable seat
US4687452 *Jul 21, 1986Aug 18, 1987Hull Diane HGas-inflatable, floating, portable seat
US4724558 *Sep 5, 1986Feb 16, 1988Reiff Jeffrey ABeach blanket and inflatable chair combination
US5005902 *Oct 10, 1990Apr 9, 1991Farnworth Wendy ESeat for a baby
US5292175 *Sep 4, 1992Mar 8, 1994BabystarInflatable child vehicle seat
US5335968 *Oct 16, 1992Aug 9, 1994Sheridan Peter A JChild's booster seat
US5951111 *Mar 11, 1998Sep 14, 1999Sevylor U.S.A., Inc.Inflatable sofa
US6135551 *Jul 16, 1999Oct 24, 2000Linder; Steven G.Inflatable chair with speakers
US6161902 *Jul 8, 1998Dec 19, 2000Alvimar Manfacturing Co., Inc.Stabilized inflatable chair
US6354665 *Feb 8, 2000Mar 12, 2002Elisabeth Helen RossInflatable infant sitting support
US6553591Jun 21, 2001Apr 29, 2003Stephen J. MotoskoFluid-containing body support air cushion
US7506389 *Jun 7, 2006Mar 24, 2009Patent Category Corp.Inflatable liquid furniture
US8783781Feb 2, 2012Jul 22, 2014Pamela McClureInflatable reclining chair
US20130127226 *Dec 14, 2011May 23, 2013Alfmeier Praezision AgPneumatic cushion, actuator and vehicle seat
WO2000074533A1 *Jun 1, 2000Dec 14, 2000Dykstra Ronald LInflatable ball chair
Classifications
U.S. Classification297/452.41, 297/451.13, 297/DIG.300
International ClassificationA47C4/54, A47C3/16
Cooperative ClassificationA47C4/54, Y10S297/03, A47C3/16
European ClassificationA47C3/16, A47C4/54