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Publication numberUS3010007 A
Publication typeGrant
Publication dateNov 21, 1961
Filing dateMay 25, 1959
Priority dateMay 25, 1959
Publication numberUS 3010007 A, US 3010007A, US-A-3010007, US3010007 A, US3010007A
InventorsJohn L Davis, Ralph G Theodore
Original AssigneeElectric Parts Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Flexible radiant heating panel
US 3010007 A
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Description  (OCR text may contain errors)

NOV- 21, 1961 R. G. THEoDoRE ET AL 3,010,007

FLEXIBLE RADIANT HEATING PANEL Filed May 25, 1959 @gay ' 3,010,007 FLEXIBLE RADIANT HEATING PANEL Ralph G. Theodore, Georgetown, Ky., andJohnL. Davis,

Camp Hill, Pa., assignorsto `Electric Parts Corporation, Georgetown, Ky., a corporation of Illinois Filed May 25, 1959, Ser. No. 815,346

3 Claims. (Cl. 2194-46) rfhis invention relates to improvements in a radiant heating panel'or sheet which essentially is constructed of an insulated electric resistance wire sandwiched between opposite sheets of metallic foil.

One of the important features of the invention resides in a radiant heating pane-l or sheet which is extremely flexible permitting use where more resilient and bulky panels cannot be used.

Another import-ant feature of the invention resides in a radiant heating panel or sheet which may be manufactured economically and yet ythe structure is sturdy and safe to use. n n

A further important rfeature of the invention resides in a radiant heating panel or sheet which employs insulated resistance wires, the radiant panels of which are so flexible as to intimately associate the wires with the panels without bridging the panels between adjacent wires.

Anotherk important feature of the invention resides in a radiant heating panel or lsheet wherein the radiant panel members comprise relatively flexible foil and wherein the inner faces of the foil sheets are coated with a relatively thin coating of adhesive, preferably, polyethylene, to cause adherence of Ithe sheets to each other and to thev sandwiched heating wires.

Other objects, advantages and features of the present invention will be more apparent from the accompanying drawing and following detailed description.

ln the drawing, FIG. l is a face viewfof a radiant heating panel or sheet embodying the features yof the present invention.

FiG. 2 is an enlarged ydetailed sectional view taken on line 2--2 of FIG. 1, certain parts being exaggerated in size.

FlG. 3 is a sectional view similar to that shown in FIG. Z wherein the radiant sheetsare joined together in a modified manner. 'y Referring in detail to the drawing, 1 indicates gene-rally a radiant heating panel or sheet embodying the features of the present invention. The panel 1 comprises essentially a heating Iunit 2. sandwiched between two outer sheets of flexible metal foil 3 and 4.

The heating unit 2 comprises conventional resistance wire sheathed by an insulating material 6. The insulating material comprises a flexible material, preferably polyvinyl chloride or similar plastic material or mix-ture which will withstand temperatures up to about 220 F; without y meltingor disintegrating. The heating unit is arranged in a zigzag or serpentine fashion conventional in the arrangements used in heating panels, electric blankets, electric sheets or the like so that the pattern employed will produce heat over a relatively large area.

The sheets 3 and 4 comprise flexible metal foil, preferably aluminum foil having highly eflicient radiant energy reflecting surfaces. Preferably the foil thickness or caliper is less than about three thousandthsof an inch. Of course, heavier foil may yconceivably be used so long as the foil sheets do not appreciably bridge adjacent wires of the heating unit when saidwires are sandwiched between the radiant sheets, as will be hereinafter more fully described.

The heating unit wires are sandwiched between the two opposite foil sheets 3 and 4, as shown best in Fig. 1'. As a feature of the present invention, the inner yor confronting faces of the foil sheets 3 and 4 are coated with a relatively thin coating 7 of yanadhesive, preferably 3,010,001 Patented Nov. 21k, 1961 polyethylene, the coating 7k in FIG. 2 being shown inl together and secured to the surface of the insulation 6.

By virtue of the flexible character of the foil sheets, the

` sheets may be brought into intimate contact with each other and with the major portion of the outer surface area i of the insulation 6. That is, `no appreciable bridging of the sheets t3 and 4 will take place between adjacent wires kor conductors of the heating unit.

The preferred manner of sandwiching the heating unit between the sheets 3 and 4 is illustrated in lFIG. 2 wherein the sheets 3 and 4 symmetrically sandwich the wires 0f the heating unit. However, if desired, the sheets may sandwich the heating unit wires as shown in FIG. 3, wherein sheet 4 is maintained substantially flat and sheet 3 is distorted to embrace the heating unit conductors Z. For automatic ormachine securement of the sheets together about the heating unit, one manner of securement may be preferred over the other. In either case, however, a minikmum of bridging of the sheets over the conductors will OCCHI.

. y yOther obvious variations of the invention, which do not depart from the spirit of the invention, will occur kto anyone skilled in the art and, hence, it is not intended that the invention be limited to the exact details Vshown and described yexcept as necessitated by the appended claims.

What is claimed is: f

. `l. A relatively flexible radiant heating panel comprisingV a flat sinuous coil of resistance wire, a sheath of relatively flexible polyvinyl chloride insulating material carried on said wire, a sheet of flexible foil disposed on each side of said coil, and a coating of polyethylene heat-responsive adhesive carried on theconfronting faces of said sheets, said sheets being adhered togethery by said polyethylene adhesive between adjacent loops of said insulated resistance wire and being intimately adheredpby said polyethylene adhesive to a portion of the outer surface area `material capable of withstanding temperatures of at least about 220 degrees F., a sheet of thing flexible thermally conductive metal foil disposed lon each side of said coil,

and a coating of adhesive carried on the confronting faces of said sheets, said adhesive comprising a heat-responsive plastic material, said sheets being adhered together byy said adhesive between adjacentloops of said insulated resistance wire and being intimately adhered by said adhesive to substantially the entire outer surface area of the insulating sheath carried by said resistance wire.

3. A flexible radiant heating panel comprising a flat sinuous coil of resistance wire, a sheath of flexible insulating material carried on said wire, a sheet of, thin flexible thermally conductive metal foil disposed. on each side of said coil, and a coating of adhesive carried on the confronting faces of said sheets, said sheets conforming to said coil of wire and being intimately adhered by said adhesive about substantially the entire youter surface area ofthe insulating sheath carried by said wire and `being References Cited in the file of this patent UNITED STATES PATENTS 1,521,241 Hale Dec. 30, 1924 1,996,522 Norris Apr. 2, 1935 2,07 8,675 Lockwood Apr. 27, 1937 4 Blessing July 15, 1947 Roberson June 13, 1950 Cha11enner Nov. 14, 1950 Brennan Oct. 12, 1954 Abbott et a1 Aug. 16, 1955 MacKendrick Aug. 6, 1957 Willat July 29, 1958 Silversher Oct. 28, 1958

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1521241 *Jun 3, 1920Dec 30, 1924Willis W HaleElectrical insulating medium
US1996522 *Apr 29, 1932Apr 2, 1935Reconstruction Finance CorpHeating panel
US2078675 *Oct 27, 1934Apr 27, 1937Westinghouse Electric & Mfg CoHeater control system
US2423869 *Sep 30, 1940Jul 15, 1947Rca CorpComposite structure and method of making the same
US2511378 *Sep 5, 1946Jun 13, 1950Roberson Leonard NRadiant electric heating device
US2529914 *Jun 22, 1950Nov 14, 1950Denison Mattress FactoryElectrical heating element
US2691208 *Aug 14, 1948Oct 12, 1954Brennan Joseph BMethod of laminating strip metal
US2715674 *Mar 12, 1953Aug 16, 1955Howard C AbbottElectrically heated mattress and sleeping pad
US2802091 *Oct 18, 1954Aug 6, 1957Kaz Mfg Co IncElectric plate warmer
US2845519 *Feb 23, 1954Jul 29, 1958Arnold F WillatElectrical floor heating pad
US2858451 *Mar 7, 1955Oct 28, 1958Herman I SilversherLaminar ray shielding materials
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3118042 *Oct 26, 1961Jan 14, 1964Perkin Elmer CorpElectrical heating devices
US3129316 *Jul 30, 1962Apr 14, 1964Ferris N GlassHeating element for eliminating ice from a roof
US3135040 *Jan 29, 1962Jun 2, 1964Singer CoPrefabricated heating structure and method of installing
US3153140 *Sep 12, 1961Oct 13, 1964Electric Parts CorpRadiant heating panel
US3209128 *Nov 20, 1962Sep 28, 1965Smith Gates CorpHeating mat
US3293405 *Sep 13, 1965Dec 20, 1966Raphael J CostanzoElectrically heated footwear
US3453417 *Dec 7, 1966Jul 1, 1969Acra Electric CorpElectric heater assembly
US3473003 *May 26, 1965Oct 14, 1969Eisler PaulWall covering material for use in space heating
US3807044 *Aug 24, 1972Apr 30, 1974Kabel Metallwerke GhhMethod for making heating mats
US3949189 *Apr 22, 1974Apr 6, 1976Thermon Manufacturing CompanyPipe heat transfer assembly
US4254326 *Aug 31, 1978Mar 3, 1981Raychem CorporationElectrical heater apparatus
US4313048 *Oct 10, 1978Jan 26, 1982Rolf C. Hagen (Usa) Corp.Thermostatically controlled externally mounted electric aquarium heater
US4314144 *Oct 29, 1979Feb 2, 1982Eaton CorporationThermostat mounting arrangement for electric heating appliance
US4346277 *Apr 22, 1981Aug 24, 1982Eaton CorporationPackaged electrical heating element
US4471212 *Dec 21, 1981Sep 11, 1984Armstrong World Industries, Inc.Adhesively bonding insulation backing, carbon fiber heaters, polyester, copper electrodes and aluminum decoirative surfaces-all have similar coefficients of expansion
US4501713 *Jun 15, 1983Feb 26, 1985Phillips Petroleum CompanyHeat treatment
US4501951 *Aug 16, 1982Feb 26, 1985E. I. Du Pont De Nemours And CompanyElectric heating element for sterilely cutting and welding together thermoplastic tubes
US4523085 *Jan 20, 1984Jun 11, 1985Flexwatt CorporationElectrical heating device
US4547659 *Dec 5, 1983Oct 15, 1985Raychem CorporationPTC Heater assembly
US4588462 *Feb 28, 1985May 13, 1986Horowitz Seymour MContinuous wire adhered to backing wound into predetermined pattern
US4665308 *Nov 25, 1985May 12, 1987Lange International S.A.Electrical heating element intended to be incorporated in an inner lining of an item of clothing or accessory intended to be placed against a part of the human body
US4673801 *Jun 28, 1985Jun 16, 1987Raychem CorporationPTC heater assembly
US5558794 *Oct 6, 1994Sep 24, 1996Jansens; Peter J.Coaxial heating cable with ground shield
DE2652100A1 *Nov 16, 1976May 18, 1978Joachim RuhnauVerfahren und anwendung zur herstellung von einer elektrischen arbeitsplatzfusswaermeplatte
EP0117001A1 *Feb 14, 1984Aug 29, 1984Carbolite Furnaces LimitedHeating panels
EP0124174A1 *Apr 24, 1984Nov 7, 1984Lange International S.A.Electrical heating element to be incorporated in an inner layer of a garment or of an accessory, to be applied to a part of the human body
WO1990013986A1 *May 7, 1990Nov 15, 1990Per WesseltoftFlat electric heating arrangement
Classifications
U.S. Classification392/435, 219/544, 338/212, 156/177, 338/210, 219/549
International ClassificationH05B3/34, F24D13/02
Cooperative ClassificationH05B2203/009, H05B2203/014, H05B3/34, F24D13/022
European ClassificationH05B3/34, F24D13/02B