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Publication numberUS3253861 A
Publication typeGrant
Publication dateMay 31, 1966
Filing dateOct 20, 1965
Priority dateOct 20, 1965
Publication numberUS 3253861 A, US 3253861A, US-A-3253861, US3253861 A, US3253861A
InventorsHoward S Howard
Original AssigneeHowe Plastics And Chemical Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Inflatable cushion
US 3253861 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

1966 H. s. HOWARD 3,253,861

INFLATABLE CUSHION Filed Oct. 20, 1965 2 Sheets-Sheet 1 FIGZZ INVENTOR. fiowea J. //0M4e0 y 1, 1966 H. s. HOWARD 3,253,861

INFLATABLE CUSHION Filed Oct. 20, 1965 2 Sheets-Sheet 2 INVENTOR. flaw/yep J flan/42 United States Patent 3,253,861 INFLATABLE CUSHION Howard 5. Howard, New Rochelle, N.Y., assignor t0 Howe Plastics and Chemical (30., Inc., New York, N.Y., a corporation of New York Filed Oct. 20, 1965, Ser. No. 498,474 2 Claims. (Cl. 297453) The present invention relates generally to inflatable plastic articles, and more particularly to certain improvements in the construction of such products which facilitates the manufacture thereof in the flat while providing a desirable form to these products in an inflated condition.

The heat sealing of unsupported vinyl or other such plastic material in the construction of numerous inflatable products is already in wide use for the obvious reason that it represents a good method of mass producing items at an economical cost. Common examples of such inflatable plastic products include toyanimals, swimming tubes and beach balls, to mention just a few.

While the improvements of the present invention could conceivably be embodied in such products, they are more appropriate for an inflatable member functioning as a seat cushion, or as a backrest, or as a combination seat cushion and backrest as is described herein by way of example. In this end use, there is a more obvious need for ventilation openings in the body of the inflated product to increase the comfort of the user of the product.

Current techniques for forming such openings, for ventilation or otherwise, in the body of an inflated plastic product includes delineating these openings in the product during its assembly and construction in the flat, preferably by a strip seal, and then removing the areas so delineated by a hand-stripping operation. Even though this stripping operation is simple, it involves handling and labor and thus substantially increases manufacturing costs, particularly in the case of a seat and backrest cushion in which many ventilation openings are desirable.

Broadly, it is an object of the present invention to overcome the foregoing and other shortcomings of the prior art. Specifically, it is an object to provide an improved inflatable plastic product, as exemplified by a combination seat cushion and backrest as described herein, wherein there is a minimum of handling and handstripping operations during manufacture of the product, and the inflated product nevertheless has numerous commercially desirable ventilation openings therein.

Another object of the present invention is to provide an inflatable plastic combination seat cushion and backrest which upon inflation assumes a desirable configuration wherein the two sections of the product extend substantially perpendicularly of each other.

A further object of the present invention is to pro vide an improved inflatable plastic comfbination seat cushion and backrest which is comparatively easy to inflate.

An inflatable plastic article in the specific form of a combination seat cushion and backrest demonstrating features of the present invention includes a pair of panels, preferably of unsupported vinyl, heat sealed together to form an enclosure adapted to be inflated by pressure air. The main body portion of the article is provided in the flat with a plurality of strategically located slits formed by being strip sealed through the panels and sealed against leakage of pressure air from within the article by a surrounding line of heat sealing. Each of the slits is formed with a pair of adjacently located edges and is devoid of any area therebetween which requires removal by a hand-stripping operation. However, when the article is inflated, the body areas between the slits when assuming a three-dimensional configuration function to draw Patented May 31, 1966 apart each slit and thereby provide ventilation Openings throughout the article body.

The above brief description, as well as further objects, features and advantages of the present invention, will be more fully appreciated by reference to the following detailed description of a presently preferred, but nonetheless illustrative embodiment in accordance with the present invention, when taken in conjunction with the accompanying drawings, wherein:

FIG. 1 is a plan view of an inflatable article, in the flat,

' demonstrating features of the present invention;

FIG. 2 is an elevational view, on a greatly enlarged scale, and in section taken on line 22 of FIG. 1 illustrating details of construction of said article;

FIG. 3 is an enlarged fragmentary plan view of the portion of saidarticle within the circle of FIG. 1 illustrating further details of construction thereof;

FIG. 4 is a fragmentary sectional view taken on line 44 of FIG. 3 best illustrating one of the valve means of the article;

FIG. 5 is a perspective view of the article in an inflated condition;

FIG. 6 is an elevational view, in section taken on line 6-6 of FIG. 5, illustrating the functioning of certain inflated portions of the article to provide ventilation openings therein; and

FIG. 7 is a side elevational view of the article in a typical operative position on a seat illustrated in phantom perspective.

Reference is now made to the drawings wherein there is shown a plastic article of manufacture preferably in the specific commercial embodiment of a combination seat cushion and backrest 10. As best shown in FIG. 5, the article 10 consistent with this end use includes a seat cushion 20 and backrest 22 and is fabricated of unsupported vinyl or other plastic materials by mass production heat sealing techniques. As will be explained in greater detail subsequently herein, the article 10 is constructed or fabricated in the flat as shown substantially in FIG. 1 so as to define an enclosure adapted to be inflated by pressure air. When the article 10 is inflated by pressure air it assumes the shape and form substantially as shown in FIG. 5, including the comparatively wide ventilation openings 12. In this regard, it will be noted that while the article 10 at the time of its construction in the flat is substantially devoid of these comparatively wide and readily apparent openings selectively located therein, these openings 12 are present in the inflated condition of the article 10 to function in an obvious manner as ventilation openings for the article.

The construction of the article 10 includes a front and a rear panel. 14 and 16 of unsupported vinyl or similar heat scalable plastic material which are heat sealed together along a continuous line of heat sealing, as at 18, at their respective peripheral edges. The line of heat sealing 18 is advantageously applied with a strip sealing die so that excess material in the front and rear panels 14, 16 is stripped along the sealing line 18 to provide a neat and finished edge to the article 10. The two portions of the article 10 which serve the function of a seat cushion and backrest, respectively, and which are herein specifically designated 20 and 22, are delineated from each other by a transverse oriented line of heat sealing 24 located in the medial portion of the article 10. The seat cushion 20 and backrest 22 are each provided with individual valve means 26 and 28, respectively, for admitting pressure air therein. Each of the valve means 26, 28, as best shown in FIG. 4, includes a plastic tub-ular section 30 heat sealed, as at 32, within an opening in one of the plastic panels of the article 10 and has an attached stopper 34 for closing the opening of the tubular section 30. As best seen in FIG. 1, the transverse heat seal line 24 is provided with an arcuate shape which functions, in a manner well understood in the construction of inflatable items, to project the seat cushion 20 and backrest 22 at angles substantially perpendicular to each other along the heat sealing line 24 when the article is inflated, all as is best shown in FIGS. 5, 7.- As a consequence, the inflated article 10 is shaped to readily accommodate itself to an automobile seat 25 or similar seating structure.

Since the structural features embodied in the seat cushion 20 and backrest 22 and the functioning of these features are substantially identical, the detailed description of such structural features and functioning is simplified by being set forth in connection only with the backrest 22, it being understood that such description applies equally well to the seat cushion 20 and that the same reference numerals identify similar parts. Spaced inwardly and oriented substantially parallel to the peripheral edge 18' of the backrest 22 is an additional line of heat sealing 36 which delineates a supporting rim 38 from an interior body portion 40. The opposite ends 42, 44 of the interior line of heat sealing 36 terminates short of the transverse line of heat sealing 24 and thus providesinternal flow passages 46 thereb'etween through which pressure air admitted through the valve (means 28 can freely flow into both the supporting rim 38 and body portion 40.

Turning now to the construction of the body portion 40 of the backrest 22, it should be readily appreciated that the ventilation openings 12 which exist therein in the inflated condition of the article 10 contributes significantly and in an obvious manner to the commercial value of the article. On the other hand, it should be readily obvious that it is desirable to minimize the costs of manufactureof the article 10 and to this extent it is essential that handling and processing operations necessary to fabricate the article 10 be minimized. One such handling and processing operation includes the forming of ventilation openings in the flat condition of the article 10 such that a hand-stripping operation is required to remove material to form these openings. Considering the number of ventilation openings 12 which exist in the inflated condition of the article 10 it will be readily appreciated that these numerous stripping operations would appreciably raise the cost of manufacture of the article 10. It is thus an essential and significant feature of the article 10 of the present invention that the ventilation openings 12 are derived from structural features which avoid a hand-stripping operation. I

By a comparison of FIGS. 1, 3 with FIG. 5, it can be readily seen that the ventilation openings 12 in the flat condition of the article 10 are in the form of slits 12a, preferably formedby a strip seal causing a separation in panels 14, 16. The slits or comparatively narrow openings 12a which characterize the article 10 in the flat are further provided with a line of heat sealing 48 which joins the front and rear panels 14, 16 together along the confronting edges 12b of the panels so that pressure air, once admitted into the article 10', cannot escape therefrom between the edges 12b of these panels. The heat sealing line 48 entirely surrounds each of the slits 12a and includes a circular configuration 48a at opposite ends thereof which in the heat sealing art is conventionally employed in a heat seal to minimize tearing of the plastic material.

The manner in which the slits 12a are drawn into enlarged ventilation openings 12 in the inflated condition of the article 10 can best be appreciated by a comparison of FIGS. 2 and 6. When in the flat, the'sections or delineated areas of the body portion 40 on opposite sides of a sealed slit 12a have only a single dimension H in the plane of the article 10. However, these same body port-ions 40 in the inflated conditions of FIG. 6 are forced into a three-dimensional configuration by the pressure air and take on a shape wherein the original dimension H is shortened by expansion in a transverse plane which produces an increased dimension W not present in the flat condition of the article 10. To accommodate to this three-dimensional configuration, inflated body portions 40 draw apart each slit 12a and produce a ventilation opening 12. Any appropriate number of slits 12a can be readily provided in the article 10 to produce a corresponding number of ventilation openings 12 in the inflated product to increase the comfort to the user of the product, as desired. Such slits 12a which produce these openings 12 should be separated from each other and from the line of heat sealing 36 so as to provide additional internal passages 46 therebetween which facilitates the inflating of the body portion 40.

From the foregoingv it should be readily appreciated that while a preferred form for the article 10 is a combination seat cushion 20 and backrest 22 as described herein, that other specific commercial embodiments utilizing the novel structural features described herein are also possible. In other respects as well, a latitude of modification, change and substitution is intended 'in the foregoing disclosure and in some instances some features of the invention will be employed without a corresponding use of other features. Accordingly, it is appropriate that the appended claims be construed broadly and in a manner consistent with the spirit and scope of the invention herein.

What is claimed is:

1. An inflatable plastic cushion comprising a front panel and a rear panel heat sealed together to define an enclosure adapted to be inflated by pressure air, said cushion having a body portion including an arcuate transverse line of heat sealing across the medial portion thereof to divide said body portion into a seat and a backrest, said seat and said backrest being each formed in the flat with a plurality of comparatively narrow slits extending through said front and rear panels and sealed against leakage by a surrounding line of heat sealing joining together said front and rear panels along the edges of each slit, said sealed edges of each slit being located adjacent to each other with no portions of said front and rear panels being removed therebetween and adapted to be drawn apart during the inflating of said cushion into a three-dimensional configuration to function as ventilation openings for the body portion of said cushion.

2. An inflatable cushion as defined in claim 1 including an additional line of heat sealing oriented substantially parallel to and spaced inwardly of the peripheral edge of each of said seat and said backrest to delineate a supporting rim along the peripheral edge of each.

References Cited by the Examiner UNITED STATES PATENTS 1,830,570 11/1931 Smith et a1. 5-348 X 2,625,209 1/1953 Harrison et al 5-348 X 2,842,783 7/1958 Dr-uck 5-348 2,843,181 7/1958 Paschen 297-456 3,017,22-1 1/1962 Emery 5-337 X 3,033,257 5/1962 Weber -1 3,083,054 3/1963 Weaver 297-219 3,112,956 12/1963 Schick et al 297-219 3,115,564 12/1963 Stacy 219-19 FRANK B. SHERRY, Primary Examiner. CASMIR A. NUNBERG, Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1830570 *Aug 18, 1930Nov 3, 1931Smith William HenryPneumatic upholstery
US2625209 *Jul 28, 1948Jan 13, 1953Parker Stearns And CompanyInflatable rubber article
US2842783 *Feb 27, 1956Jul 15, 1958Plastimayd Products CorpAir mattress
US2843181 *Jun 29, 1954Jul 15, 1958Wetzell Gummiwerke AgArticle of repose for supporting the body of a person
US3017221 *Sep 6, 1960Jan 16, 1962William M EmeryPillows
US3033257 *Aug 21, 1957May 8, 1962H G Weber And Company IncBag forming tube and method of forming and accumulating the same
US3083054 *Jun 6, 1961Mar 26, 1963Weaver ScottBucket seat adapter
US3112956 *Aug 30, 1961Dec 3, 1963Schick Melvin EdwardInflatable seat and back rest
US3115564 *Jun 30, 1961Dec 24, 1963Phillips Petroleum CoApparatus for cutting and heat-sealing thermoplastic films
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3323147 *Oct 20, 1965Jun 6, 1967R N Miksel CorpInflatable bassinets
US3346298 *Oct 31, 1966Oct 10, 1967Howe Plasties & Chemical Co InSeat cushion
US3462775 *Jun 1, 1967Aug 26, 1969Bernhard MarkwitzSupporting means to prevent parts of the body from contracting bed-sores
US3513489 *May 20, 1968May 26, 1970Royal T CoBassinette
US3608966 *Feb 17, 1969Sep 28, 1971Kredenser PeterCollapsible chair
US3630570 *Sep 3, 1970Dec 28, 1971Swenson CorpBucket-type seat having drain and ventilating means
US3761131 *Sep 27, 1971Sep 25, 1973W OliverArticle of furniture and method of manufacturing same
US3958286 *Jul 1, 1974May 25, 1976Rodinsky Theodore FFire extinguishing mattress cover
US3980226 *May 5, 1975Sep 14, 1976Franz Charles FEvacuateable bag
US4207633 *Sep 5, 1978Jun 17, 1980Margj ImelInflatable body support for use with bedpan
US4347633 *Jul 22, 1980Sep 7, 1982American Hospital Supply CorporationPatient treating mattress
US4588229 *Mar 4, 1983May 13, 1986Jay Medical, Ltd.Seat cushion
US4649896 *Aug 8, 1985Mar 17, 1987Formosa David JDevice for stopping air leakage through fireplace flues
US4669460 *Apr 7, 1986Jun 2, 1987Silber Arthur LAnti-ulceration bandage
US4685163 *Jun 28, 1985Aug 11, 1987Quillen Jeffrey BRecliner for medical convalescence
US4690456 *Jun 26, 1985Sep 1, 1987Aisin Seiki Kabushiki KaishaAir bag assembly
US4718721 *Apr 22, 1985Jan 12, 1988Susan PompaChair cover
US4726624 *Mar 10, 1986Feb 23, 1988Jay Medical, Ltd.Seat cushion
US4766629 *Jun 2, 1987Aug 30, 1988Schueler Tyler EVentilated flotation mattress
US4826249 *Feb 22, 1988May 2, 1989General Motors CorporationThin inflatable elastomeric seat
US4882800 *Aug 29, 1988Nov 28, 1989Schueler Tyler EFlotation mattress
US4930171 *May 3, 1989Jun 5, 1990International Healthcare Products, Inc.Contour retaining support cushion
US4960304 *Feb 7, 1990Oct 2, 1990Internatinal Healthcare Products, Inc.Contour retaining back support cushion
US5044030 *Jun 6, 1990Sep 3, 1991Fabrico Manufacturing CorporationMultiple layer fluid-containing cushion
US5056533 *Oct 17, 1990Oct 15, 1991Toni SolanoSupport cushion
US5120111 *Jun 13, 1991Jun 9, 1992Cook Christopher AInflatable seat
US5265293 *Feb 2, 1993Nov 30, 1993Ehob, Inc.Inflatable body support
US5561873 *Jun 22, 1995Oct 8, 1996Patient Transfer Systems, Inc.Air chamber-type patient mover air pallet with multiple control features
US5658050 *Jan 11, 1996Aug 19, 1997Milsco Manufacturing CompanyVehicle seat with inflatable bladder
US5868463 *Oct 3, 1997Feb 9, 1999Novus Designs, Inc.Seat cushion with selectively inflatable interior seat and back compartments
US5918334 *Aug 8, 1997Jul 6, 1999Medical Support Systems LimitedCushion with gel sac and gel overlay
US6076213 *Aug 11, 1997Jun 20, 2000Chase, Jr.; Carl A.Portable inflatable massage support apparatus
US6415583 *Feb 25, 2000Jul 9, 2002Supracor, Inc.Saddle pad
US6574947Jun 7, 2002Jun 10, 2003Curtis L. LandiMethod of making a saddle pad
US6665898 *Dec 3, 2001Dec 23, 2003Bruce GordonDevice for correcting a sagging bed
US6677026 *May 4, 2001Jan 13, 2004Yates Paul MCushion matrix
US6990696Jan 9, 2004Jan 31, 2006Spin Master LimitedSleeping structure
US7051386Jun 14, 2004May 30, 2006Spin Master LimitedSleeping structure
US7318244 *Jun 23, 2006Jan 15, 2008Kasatshko Victor MFluid-inflatable pillow
US7322064 *May 19, 2004Jan 29, 2008Hsin-Tsai WuInflatable bed
US7376996 *Jun 17, 2005May 27, 2008Supracor, Inc.Multi-section mattress or mattress overlay and method of making same
US7788751 *Feb 4, 2009Sep 7, 2010Stephen K. DiemerSitting neck support device
US7810193 *May 21, 2009Oct 12, 2010Dianna EnnisInflatable support cushion
US8147000 *May 11, 2010Apr 3, 2012Drake Terry GVariable-pressure lumbar and back support cushion
US8262160 *Nov 14, 2008Sep 11, 2012Mehri MafiAdjustable padded chair
US8944066 *Nov 27, 2013Feb 3, 2015Curve Cure LLCDevices and methods for restricting pressure application to injured tissue
US9756955 *Sep 21, 2015Sep 12, 2017Argon Technologies, Inc.Inflatable pad and methods for using same
US9795221 *Jul 21, 2016Oct 24, 2017Aqua-Leisure Industries, Inc.Inflatable lounge chair and methods of manufacturing same
US20040216238 *Jan 9, 2004Nov 4, 2004Worlds Apart LimitedSleeping structure
US20040239156 *Jun 2, 2003Dec 2, 2004Maury RosenbergMisting furniture
US20050060803 *Jun 14, 2004Mar 24, 2005Worlds Apart LimitedSleeping structure
US20050223495 *May 19, 2004Oct 13, 2005Hsin-Tsai WuInflatable bed
US20050278860 *Jun 17, 2005Dec 22, 2005Landi Curtis LMulti-section mattress or mattress overlay and method of making same
US20060219236 *Mar 17, 2006Oct 5, 2006Formosa David JFireplace plug
US20060236461 *Feb 17, 2006Oct 26, 2006Jim RyanInflatable play pen and inflatable construction set
US20070085394 *Oct 13, 2005Apr 19, 2007Yang Jen SInflatable child safety seat
US20070294830 *Jun 23, 2006Dec 27, 2007Kasatshko Victor MFluid-inflatable pillow
US20080010749 *Jul 5, 2007Jan 17, 2008Kasatshko Victor MFluid-Inflatable Pillow
US20100122408 *Nov 14, 2008May 20, 2010Mehri MafiAdjustable padded chair
US20100229960 *Sep 14, 2009Sep 16, 2010Merker Blaine AInflatable apparatus
US20110107521 *Nov 9, 2010May 12, 2011Argon Technologies, Inc.Inflatable pad and methods for using same
US20110203053 *Nov 4, 2009Aug 25, 2011Mulliez ThaddeeInflatable cell for anti-eschar mattresses
US20160007763 *Sep 21, 2015Jan 14, 2016Argon Technologies, Inc.Inflatable pad and methods for using same
US20170020296 *Jul 21, 2016Jan 26, 2017Aqua-Leisure Industries, Inc.Inflatable lounge chair and methods of manufacturing same
USD746079Oct 15, 2013Dec 29, 2015Mary Beth Boyette-KirtleyStadium seat cushion
DE3522845A1 *Jun 26, 1985Jan 2, 1986Aisin SeikiLuftsackanordnung
DE3545016A1 *Dec 19, 1985Jul 2, 1987Continental Gummi Werke AgPneumatisches polster
EP0226165A2 *Dec 9, 1986Jun 24, 1987Continental AktiengesellschaftPneumatic cushion
EP0226165A3 *Dec 9, 1986Nov 25, 1987Continental Gummi-Werke AktiengesellschaftPneumatic cushion
EP0298160A1 *Mar 16, 1987Jan 11, 1989Davic Enterprises IncorporatedFireplace insulator
WO1983003195A1 *Mar 4, 1983Sep 29, 1983Jay, Eric, C.Improved seat cushion
WO1998029010A1 *Nov 3, 1997Jul 9, 1998Graebe Robert HMotorcycle seat cushion
U.S. Classification297/452.43, 297/452.41, 297/DIG.300, 297/382, 297/229, 5/932, 5/655.3, 5/652.1
International ClassificationA47C4/54
Cooperative ClassificationA47C7/425, A47C7/021, Y10S297/03, Y10S5/932
European ClassificationA47C7/42B, A47C7/02A