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Publication numberUS2617751 A
Publication typeGrant
Publication dateNov 11, 1952
Filing dateJul 10, 1950
Priority dateJul 10, 1950
Publication numberUS 2617751 A, US 2617751A, US-A-2617751, US2617751 A, US2617751A
InventorsLe Roy M Bickett
Original AssigneeLe Roy M Bickett
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Rubber pad
US 2617751 A
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Description  (OCR text may contain errors)

Patented VyNov. 11, 1952 UNITED STATES PATENT OFFICE vRUBBER PAD Le Roy M. Bickett, Watertown, Wis.

Application July 10, 1950, Serial No. 172,929

2 claims. l

This invention relates to rubber pads for use primarily as sleeping pads or mattresses although other uses are contemplated.

Rubber pads lack the requisite softness and fail to provide the comfort desired for satisfactory use as sleeping pads or mattresses. This is also true of those composed of socalled sponge or foam rubber, because, as heretofore designed, they rely entirely upon the natural compressibility of these materials which alone is inadequate to provide the extent or depth of yield required for sleeping comfort.

One object of the present invention is to provide an improved rubber pad so constructed as to materially increase the capacity to yield under compressive load.

Other more specific objects and advantages will appear, expressed or implied, from the following description of an illustrative embodiment of the invention.

In the accompanying drawing:

Figure 1 is a fragmentary perspective view of a rubber cushion constructed in accordance with the present invention.

Fig. 2 is a fragmentary plan View with parts broken away.

Fig. 3 is a fragmentary sectional view showing the cushion slightly compressed.

The pad shown is formed of sponge or foam rubber and comprises top and bottom layers I and II separated by a series of laterally spaced upright ribs I2 traversing the same. The pad is preferably closed by suitable end and side walls I3 and I4.

The several ribs I2 are specially shaped so that each has a tendency to bend or buckle under a compressive load. ln this instance the upper half I2a of each is slightly inclined from the vertical for this purpose, while the lower half I2b is similarly inclined in an opposite direction. so that the mid-portion of each rib is laterally offset with respect to the point of juncture thereof with the top and bottom layers l0 and II of the pad. As a result of this shape, the mid-portion of each rib I2 has a tendency to deflect laterally under compressive load, as indicated in Fig. 4, thereby substantially reducing the resistance offered by each rib against compressive deformation of the pad. This results in a high degree of compressibility and consequent softness not otherwise attainable. o

The several ribs I2 are preferably uniformly shaped and dimensioned and also, preferably equally spaced a distance substantially equal to their width so that. as they approach a condition of maximum deflection, each meshes or interfolds With adjacent ribs in a manner to ultimately ll the space between the upper and lower layers Il) and I I; and when this condition is reached, further compression is possible by reason of the natural compressibility of the material itself, as in an ordinary pad. The pad shown is therefore compressible in two stages, the first stage resulting from lateral deflection of the ribs, and the second stage resulting from compression of the material in the pad.

The pad shown is preferably produced by molding the same in separate upper and lower sections of identical form, and thereafter inverting and applying one section on the other, the two sections being secured together by a suitable adhesive applied to the mating faces thereof. A suitable fabric covering I5 may be cemented or otherwise attached to the exposed faces of the pad.

Various changes may be made in the embodiment of the pad hereinabove specifically described without departing from or sacrificing the advantages of the invention as defined in the appended claims.

I claim:

1. In a resilient pad the combination of upper and lower layers of resilient material, a series of similarly shaped laterally spaced substantially parallel ribs of resilient material interconnecting and spacing said layers, each of said ribs being bent to provide a laterally offset intermediate portion biasing the same/to deflect laterally in the direction of said offset under compressive load applied to the pad, the spaces between said ribs being of a width and shape substantially similar to said ribs so as to freely accommodate rib deflections and to permit said ribs to deflect into interfolded relation with adjacent ribs.

2. In a resilient pad the combination of upper and lower layers of resilient material, each layer having a series of similarly shaped laterally spaced substantially parallel ribs of resilient material each projecting therefrom into edge-toedge contact with a corresponding rib of the other layer, theribs of one series being sloped in one direction and those of the other series in the opposite direction, and the edge of each rib of one series being joined to the contacting edge of a corresponding rib of the other series to form a series of flexurally resilient rib-like structures yieldably sustaining said layers in. spaced relation.


(References on following page) REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,628,090 Weiss May 10, 1927 1,887,310 King et a1 Nov. 8, 1932 2,433,012 Zalicovtz Dec. 23, 1947 FOREIGN PATENTS Number Country Date 376,937 Great Britain July 18, 1932 OTHER REFERENCES Ser. No. 383,860, Sluyter, (A. P. C.), published May 11, 1943.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1698090 *Mar 5, 1923Jan 8, 1929Paul Wgrether
US1887310 *Aug 20, 1930Nov 8, 1932Allison Joseph ACushion structure
US2433012 *Nov 4, 1942Dec 23, 1947Zalicovitz MorrisResilient construction for use in furniture
GB376937A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2826244 *Feb 24, 1954Mar 11, 1958Curtiss Wright CorpSeat cushion of foam-type material and method of fabricating same
US2834033 *Sep 20, 1954May 13, 1958Louise O'brien AnneBlanket
US2835313 *Feb 27, 1956May 20, 1958Gen Tire & Rubber CoCellular elastic cushion
US2944266 *Feb 7, 1957Jul 12, 1960Kurt WertheimerPillow or cushion
US2954074 *Dec 16, 1955Sep 27, 1960Schaller Ruth Erika GertraudStructural units for upholstery purposes
US3000402 *Feb 12, 1958Sep 19, 1961Phillips Petroleum CoThread protector
US3012283 *Jul 1, 1957Dec 12, 1961Mobay Chemical CorpShaping polyurethane plastics
US3043731 *Oct 14, 1959Jul 10, 1962Us Rubber CoCompressible foam product
US3197357 *Nov 19, 1956Jul 27, 1965Karel H N SchulpenYieldably deformable material having open or closed cells and at least one undulatedsurface, or object of this material
US5083335 *Mar 11, 1991Jan 28, 1992Krouskop Thomas APressure reduction foam mattress support
US6704962 *May 9, 2001Mar 16, 2004Youn Soo ChoiElastic body, method for manufacturing the same and mattress including the same
US7882837 *Aug 19, 2005Feb 8, 2011Resmed LimitedForehead support for facial mask
US8075981Aug 25, 2008Dec 13, 2011Edizone, LlcAlternating pattern gel cushioning elements and related methods
US8353294Mar 21, 2011Jan 15, 2013Resmed LimitedRespiratory mask assembly
US8371301Jul 9, 2010Feb 12, 2013Resmed R&D Germany GmbhBreathing mask for feeding a breathing gas to a mask user and discharge device for discharging breathing gas
US8402972Aug 27, 2009Mar 26, 2013Resmed R&D Germany GmbhBreathing mask arrangement and a forehead support device for same
US8424137Oct 3, 2008Apr 23, 2013Edizone, LlcRibbed gel
US8434748Oct 3, 2008May 7, 2013Edizone, LlcCushions comprising gel springs
US8479738May 20, 2011Jul 9, 2013Resmed R&D Germany GmbhBreathing mask arrangement as well as an application device and a forehead support device for same
US8549684Mar 25, 2009Oct 8, 2013Stryker CorporationGelastic material having variable or same hardness and balanced, independent buckling in a mattress system
US8607387Aug 19, 2010Dec 17, 2013Stryker CorporationMulti-walled gelastic mattress system
US8628067May 20, 2010Jan 14, 2014Edizone, LlcCushions comprising core structures and related methods
US8746250Jan 28, 2013Jun 10, 2014Resmed R&D Germany GmbhBreathing mask for feeding a breathing gas to a mask user and discharge device for discharging breathing gas
US20090314387 *Jun 27, 2008Dec 24, 2009Herndon H BrooksSystem and method for controlling interaction between surfaces
DE1034974B *Oct 5, 1953Jul 24, 1958Daimler Benz AgPolster fuer Sitze
DE1061176B *Dec 16, 1955Jul 9, 1959Ernst BreitenbornPolster fuer Sitz-, Liegemoebel, Matratzen u. dgl. aus Kunstschaumstoff
DE3402749A1 *Jan 27, 1984Aug 2, 1984Carlo DemartinMethod and device for manufacturing flexible supports and supports or product manufactured therewith
DE202012102346U1 *Jun 26, 2012Oct 1, 2013Rüdiger BarettiMatratze für Sitz- und/oder Liegemöbel, insbesondere für Betten
U.S. Classification428/166, 5/652.1
International ClassificationA47C27/15
Cooperative ClassificationA47C27/15, A47C27/144
European ClassificationA47C27/14C2, A47C27/15