Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS2826523 A
Publication typeGrant
Publication dateMar 11, 1958
Filing dateJul 26, 1954
Priority dateJul 26, 1954
Publication numberUS 2826523 A, US 2826523A, US-A-2826523, US2826523 A, US2826523A
InventorsBlaszkowski Henry, Richard A Papke
Original AssigneeBlaszkowski Henry, Richard A Papke
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Protective covering
US 2826523 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

March 1958 H. BLASZKOWSKI ETAL 2,826,523

PROTECTIVE COVERING Filed July 26, 1954 INVENTORS #2717? iiasziawsjz'} KZ/T'JIJ rroPMB/s PROTECTIVE COVERING Henry Blaszkowski and Richard A. Papke, Dearborn, Mich.

Application July 26, 1954, Serial No. 445,322

4 Claims. (Cl. 154--50) This invention relates to protective coverings and, more particularly, to an improved protective covering particularly adapted to roll upon itself automatically.

An object of the invention is to overcome disadvantages in prior protective coverings and to provide an improved protective covering incorporating improved means for automatically rolling the covering.

Another object of the invention is to provide an improved protective covering incorporating improved means for protecting articles covered thereby.

Another object of the invention is to provide an improved self-rolling protective covering incorporating improved means for removing ice and snow therefrom.

Another object of the invention is to provide an improved self-rolling protective covering which may be easily and quickly applied to an article with a minimum of time and labor so as to protect such article against shock, vibration and other forces imparted thereto.

Still another object of the invention is to provide an improved self-rolling protective covering that is economical to manufacture and assemble, durable and reliable in operation.

In the accomplishment of these objects, the present invention provides a protective covering which is comprised of a laminated sheet having a plurality of layers, at least one of the layers being resilient and being prestressed before it is bonded to the adjacent layer or layers whereby the sheet will roll upon itself tightly and automatically. The present invention also provides a chamber intermediate the layers of the laminated sheet whereby a fluid may be injected into and exhausted from the chamber to expand and contract the sheet to remove ice and snow therefrom.

The above as well as other objects and advantages of the present invention will become apparent from the following description, the appended claims and the accompanying drawing wherein:

Figure l is a perspective view of a protective covering embodying the present invention;

Fig. 2 is a plan view of the covering illustrated in Fig. 1, showing the same in the unrolled position;

Fig. 3 is a fragmentary sectional view of the covering illustrated in Fig. 2, taken on the line 3-3 thereof;

Fig. 4 is a plan view of a protective covering constructed in accordance with another form of the invention, and showing the same in the unrolled position;

Fig. 5 is a fragmentary sectional view of the covering illustrated in Fig. 4, taken on the line 5-5 thereof;

Fig. 6 is a fragmentary sectional view of another form of the invention; and

Fig. 7 is a fragmentary sectional view of still another form of the invention.

Referring to the drawing, one embodiment of the invention is illustrated in Figs. 1, 2 and 3, and is comprised of a laminated sheet, generally designated 10, having a layer 12 and a layer 14 each formed of a resilient material, as for example rubber. In the assembly of this embodiment of the invention, the layer 14 is held in a flat,

ite States Patent 0 ice relatively unstressed position. The layer 12 is then stretched and placed under tension so that the layer 12 is prestressed relative to the layer 14. The layers 12 and 14 are then bonded together by any suitable or conventional means, as for example with a bonding agent 16 or by vulcanizing, while maintaining the layer 14 in a relatively dormant, flat position and the layer 12 in the prestressed condition relative to the dormant layer. With such a construction, when the sheet 10 is released, it will automatically roll upon itself tightly and automatically to the position shown in Fig. l.

The sheet 10 is adapted to a wide variety of applications. For example, the sheet 10 may be employed as a self-rolling tarpaulin or covering. The sheet 10 may also be formed in any desired size and quickly applied to relatively fragile articles, as for example bottles, by permitting the sheet to roll around the article. It has been found that when the sheet 10 is employed in such a manner, the sheet will securely grip the article and substantially prevent relative movement between the sheet and the article, thereby maintaining the article in the protected position relative to the sheet. if desired, the sheet 10 may be formed in elongated strips and the strips bonded in spaced, substantially parallel relationship to flexible sheets of paper or the like. For example, the strips may be bonded to blueprints or maps, and the strips will cause such blueprints or maps to roll automatically when released from a relatively flat position. Other applications of the sheet 10 will be readily apparent.

Another embodiment of the invention is illustrated j in Figs. 4 and 5, and is comprised of a laminated sheet 18 having a layer 20 and a layer 22 each formed of a resilient material, as for example rubber. In the assembly of this embodiment of the invention, the layer 22 is held in a flat relatively unstressed or dormant position. The layer 20 is then stretched so that the layer 20 is placed under tension and is prestressed relative to the layer 22 after which the peripheral portions 24 of the layers are bonded together by any suitable or conventional means, as for example, by a bonding agent or by vulcanizing, while maintaining the layer 22 in a relatively dormant condition and the layer 20 in the prestressed condition. When the layers 20 and 22 are so bonded, they define a chamber 26 and an inlet opening 28 is provided through which a fluid, as for example air, may be injected into and exhausted from the chamber 26. With such a construction when the sheet 18 is released, it will roll upon itself tightly and automatically in the manner previously described. In addition, ice and snow would be easily and quickly removed from the sheet 18 by alternately injecting a fluid into the chamber 25 through the opening 28 and exhausting the fluid from the chamber 26 so as to expand and contract the central portions of the layers 20 and 22, thereby breaking the ice or snow from the sheet 18. Furthermore, the sheet 18 may be quickly applied to relatively fragile articles, as for example bottles, by applying the sheet 18 to the article so that it rolls itself upon the article after which air or other fluid may be injected into the chamber 26 so as to provide a resilient cushion around the article which serves to protect the article against impact, shock and other forces imparted thereto.

Another embodiment of the invention is illustrated in Fig. 6, and is composed of a sheet 3t having layers 32, 34 and 36 each formed of a resilient material, as for example rubber. In the assembly of this embodiment of the invention, the layer 36 is held flat in a relatively unstressed or dormant position and the layer 34 is then placed under tension so that the layer 34 is prestressed relative to the layer 36 after which the peripheral portions of the layers 34 and 36 are bonded together while maintaining the layer E 34 in a prestressed condition and the layer 36 in a relatively dormant condition. The layers 34 and 36 then define a chamber 38 into which air or other fluid may be injected in the manner previously described. After the layers 34 and .36 have been bonded, the layer 32 is placed under sufficient tension so that the layer '32 is prestressed relative to the layer 34 as Well as the layer '36 and bonded to the layer 34 in the manner previously described. It has been found that with such a construction, the sheet 30 will roll upon itself very rapidly With a snap action and it has been found that by successively applying additional layers each of which are prestressed relative to the adjacent layer, any desired rolling action may be obtained. The sheet30 may be conveniently employed in the manner previously described.

Another embodiment of the invention is illustrated in Fig. 7 and is comprised of a sheet 40 having a layer 42 and a layer 44. In this embodiment of the invention, the layer 42 is formed of a relatively non-elastic material, as for example, a fabric, While the layer 44 is formed of a resilient material, as for example rubber. In this embodiment of the invention, the layer 42 is held in a relatively fiat position and the layer 44 is placed under tension so that it is prestressed relative to the layer 42 after which the layer 44 is bonded to the layer 42., as by a bonding agent 46. Such a construction provides a protective covering having all the desired characteristics of a fabric protective covering and, in addition, provides a protective covering which is adapted to roll upon itself tightly and automatically when the peripheral portion of the sheet 40 is released. While preferred embodiments of the invention have been shown and described, it will be understood that various changes and modifications may be made without departing from the spirit of the invention.

aeaasaa 4 What is claimed is: 1. A protective covering comprising a laminated flexible sheet formed of a plurality of layers all of which are pliable, at least one of said pliable layers being formed of an elastic resilient material, said resilient layer being elastically prestressed Within its elastic limit relative to the adjacent layer and bonded to one side of the adjacent layer.

2. A protective covering comprising, in combination, a laminated flexible sheet having a pair of layers, each formed of a pliable material and disposed in back to back relationship, one of said layers being formed of an elastic material, said one layer being elastically prestressed within its elastic limit relative to the other of said layers and bonded to said other layer.

3. A pliable protective covering including, in combination, a pair of layers each formed of a flexible elastic material, one of said layers bein elastically prestressed within its elastic limit relative to the other of said layers and bonded to one side of said other layer to form a laminated sheet.

4. A flexible protective covering comprising a pair of layers, one of said layers being formed of a relatively flexible pliable material, the other of said layers being formed of an elastic resilient and pliable material, said one layer being prestressed relative to said other layer and being bonded to said other layer to form a pliable laminated sheet adapted to roll upon itself automatically.

References Cited in the file of this patent UNITED STATES PATENTS 1,211,706 Hoerbelt Ian. 9, 1917 2,305,853 Eger et a1. Dec. 22, 1942 2,335,190 Minich Nov. 23, 1943 2,490,946 Cloud Dec. 13, 1949

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1211706 *May 6, 1916Jan 9, 1917Bernard W HoerbeltBlanket for offset-printing presses and method of making the same.
US2305853 *Apr 16, 1941Dec 22, 1942Us Rubber CoApparatus for forming sheet material
US2335190 *Jul 29, 1942Nov 23, 1943Henry D MinichStretched laminated product and process for making it
US2490946 *Apr 3, 1947Dec 13, 1949William S CloudStretching and laminating thermoplastic sheet material with other sheet material
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2962404 *Apr 24, 1956Nov 29, 1960Kimberly Clark CoCohesive bonds
US3059656 *Oct 20, 1958Oct 23, 1962Union Carbide CorpInflatable plastic structure
US3243232 *Apr 14, 1964Mar 29, 1966Henry BlaszkowskiRetractable seat belt construction
US3307873 *Jan 16, 1964Mar 7, 1967Henry BlaszkowskiRetractable seat belt and method of making same
US3321245 *Nov 12, 1965May 23, 1967Gen Motors CorpSelf-retracting seat belt
US3471200 *Feb 23, 1968Oct 7, 1969Earle A MorrisonChair construction
US3782663 *Mar 22, 1972Jan 1, 1974Minnesota Mining & MfgArtificial roll-up field
US4283362 *Feb 4, 1980Aug 11, 1981Polaroid CorporationMethod and apparatus for making a self-coiling sheet
US4334612 *Mar 11, 1980Jun 15, 1982Beato Fernando JCombination support surface and carrier for elongated equipment
US4389961 *Dec 15, 1980Jun 28, 1983Parish John RSelf-collapsible, inflatable device
US4420078 *Oct 30, 1981Dec 13, 1983Norland CorporationCarrying case for a cardiac pacer
US4480652 *Feb 2, 1979Nov 6, 1984Gooch Charles WSpring covering device
US4685453 *May 14, 1985Aug 11, 1987Claude GuignardThermoformable element and use thereof
US4775379 *Dec 30, 1986Oct 4, 1988Mentor CorporationSelf-sealing valve for fluid fillable article
US4821708 *Mar 3, 1987Apr 18, 1989Claude GuignardThermoformable orthopedic bandage and use thereof
US4848437 *Jan 16, 1987Jul 18, 1989Josephe LaniadoSunblind
US5019101 *May 31, 1989May 28, 1991Purkait Bobby KSelf-sealing valve for implantable device
US5176774 *Jan 25, 1991Jan 5, 1993Roll Screens, Inc.Processes for manufacturing multilayer plastic sheet
US5443923 *Oct 14, 1992Aug 22, 1995Roll-Screens, Inc.Paper/plastic composite sheet and method of manufacturing
US5535808 *Nov 3, 1994Jul 16, 1996Idesis; MichaelCollapsible sun shade for vehicle windows
US5545445 *Sep 8, 1994Aug 13, 1996Cheng; Peter S. C.Decorative three-dimensional, curled bow and method of making same
US5971612 *Feb 25, 1998Oct 26, 1999Mcauslan; David N.Coilable storage device
US6309076 *Dec 29, 1994Oct 30, 2001Mcvicker Richard E.Light barrier, screen or reflector
US6938645 *Oct 6, 2003Sep 6, 2005Sofanou S.A.Protective sheath having a longitudinal strip made of flexible material, and method of manufacturing such a sheath
US7757421 *Jan 7, 2009Jul 20, 2010Mud Brothers IncFirearm accessories
US8973641 *Oct 31, 2012Mar 10, 2015Space Systems/Loral, LlcRoll-up contamination cover
US20040129331 *Oct 6, 2003Jul 8, 2004Duarte Domingos DominguesProtective sheath having a longitudinal strip made of flexible material, and method of manufacturing such a sheath
US20060202438 *Mar 11, 2005Sep 14, 2006Helmy Lesleigh RDisposable Sanitary Shopping Cart Handle Cover for publicly used carts/rental strollers
US20100170135 *Jan 7, 2009Jul 8, 2010Mud Brothers IncFirearm accessories
DE2847497A1 *Nov 2, 1978May 3, 1979Fuji Seal Ind Co LtdSelf-rolling laminated film - made by bonding a stiff layer to a thicker soft layer under tension
DE3726414A1 *Aug 7, 1987Oct 13, 1988Glatz AgCovering means which can be rolled up and is intended for containers, in particular for swimming pools, and process for the production thereof
EP0354756A2 *Aug 7, 1989Feb 14, 1990Bridgestone CorporationTake-up liner for uncured rubber members and method of producing the same
EP0369080A1 *Nov 18, 1988May 23, 1990Roll-Screens, Inc.Multilayer plastic sheets and processes for the preparation thereof
EP0498000A1 *Feb 4, 1991Aug 12, 1992Highland Supply CorporationCurl wrap and methods for using same
WO1981002558A1 *Mar 9, 1981Sep 17, 1981F BeatoCombination support surface and carrier for elongated equipment
WO2006129295A1 *May 31, 2005Dec 7, 2006Joseph AbramovitchMeans for temporary closing of an opening
Classifications
U.S. Classification428/12, 160/238, 52/2.18, 206/825, 280/DIG.400, 156/160, 428/212, 156/163
International ClassificationB29C53/04, F16L59/02, B29C53/32
Cooperative ClassificationB29L2009/00, Y10S280/04, F16L59/021, B29C53/04, Y10S206/825, B29C53/32
European ClassificationB29C53/32, F16L59/02B, B29C53/04