US3798419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical surface heating assembly
Assignee: EHD Inc
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Filing: 1973-03-12
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Granted: 1974-03-19
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Expires: 1993-03-12
Abstract
Abstract An electric conduction heating assembly for heating a base member comprises a thin strip of apertured, foil-like resistance material encapsulated between two thin sheets of electrical insulation material. The resistance strip is provided with a terminal assembly at each of its ends. Each terminal assembly includes a terminal connector having an apertured base. Prongs having an axial extent corresponding to the thickness of one of the insulation layers extends through the resistance strip, the insulation layer and the aperture in the terminal to clamp the resistance material against the prongs, whereby the prongs limit the plastic flow of the insulation layer during the riveting operation. The other layer of insulation material is provided with a pressure-sensitive adhesive coating covered by a removable protective release laminate so that the assembly may be secured to a surface to be heated. The assembly has particular utility as a heater for automotive mirrors to prevent ice accumulation on the reflecting surface thereof.
Inventors
- 👤 D Maake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:46
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/36; A; A47; A47G; A47G1/00; A47G1/02; B; B60; B60R; B60R1/00; B60R1/02; B60R1/06; B60R1/0602; H05B3/02; H05B3/06; H05B3/84; H05B3/845; H05B2203/00; H05B2203/002; H05B2203/007; H05B2203/017
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
180 words
A conduction heating assembly for heating a base member, comprising: a thin strip of apertured foil-like electric resistance material having a first apertured surface substantially conforming to the topography of said base member; a layer of electrical insulating material having portions of one surface covering a second apertured surface of said electric resistance material; means to secure said insulating material to said base member and to position said resistance material in heat conducting relationship with respect to said base member; and terminal assemblies secured to each end of said electric resistance material, each terminal assembly comprising a terminal connector having an aperture in its base, prong means extending from the periphery of said aperture and through an aperture in said layer, the axial extent of said prong means substantially corresponding to the thickness of said layer, rivet means extending through the aperture in said terminal, through said layer, and through aperture means in said electric resistance material and clamping said strip against said prong means, whereby said prong means limit the plastic flow of said layer during a riveting operation.
Claim 2
Dependent Claim
180 words
A conduction heating assembly for heating a base member, comprising: a thin strip of apertured foil-like electric resistance material having a first apertured surface substantially conforming to the topography of said base member; a layer of electrical insulating material having portions of one surface covering a second apertured surface of said electric resistance material; means to secure said insulating material to said base member and to position said resistance material in heat conducting relationship with respect to said base member; and terminal assemblies secured to each end of said electric resistance material, each terminal assembly comprising a terminal connector having an aperture in its base, prong means extending from the periphery of said aperture and through an aperture in said layer, the axial extent of said prong means substantially corresponding to the thickness of said layer, rivet means extending through the aperture in said terminal, through said layer, and through aperture means in said electric resistance material and clamping said strip against said prong means, whereby said prong means limit the plastic flow of said layer during a riveting operation.
Claim 3
Dependent Claim
42 words
A conduction heating assembly according to claim 1, wherein said securing means includes a sheet of electrical insulating material having a first surface covering and in contact with said first surface of said resistance material and being in heat conducting relationship therewith.
Claim 4
Dependent Claim
29 words
A conduction heating assembly accordIng to claim 2, wherein portions of said first surface of said sheet are bonded to other portions of said one surface of said layer.
Claim 5
Dependent Claim
20 words
A conduction heating assembly according to claim 3, wherein a second surface of said sheet is coated with adhesive means.
Claim 6
Dependent Claim
16 words
A conduction heating assembly according to claim 4, wherein said adhesive means is a pressure-sensitive adhesive.
Claim 7
Dependent Claim
187 words
A conduction heating assembly for heating a base member, comprising: a thin strip of apertured foil-like electric resistance material having a first apertured surface substantially conforming to the topography of said base member; a layer of heat and electrical insulating material covering a second apertured surface of said electric resistance material and having a laterally projecting flange extending from said resistance material; means to secure said flange to said base member and to position said resistance material in heat conducting relationship with respect to said base member; and terminal assemblies secured to each end of said electric resistance material, each terminal assembly comprising a terminal connector having an aperture in its base, prong means extending from the periphery of said aperture and through an aperture in said layer, the axial extent of said prong means substantially corresponding to the thickness of said layer, rivet means extending through the aperture in said terminal, through said layer, and through aperture means in said electric resistance material and clamping said strip against said prong means, whereby said prong means limit the plastic flow of said layer during a riveting operation.
Claim 8
Dependent Claim
187 words
A conduction heating assembly for heating a base member, comprising: a thin strip of apertured foil-like electric resistance material having a first apertured surface substantially conforming to the topography of said base member; a layer of heat and electrical insulating material covering a second apertured surface of said electric resistance material and having a laterally projecting flange extending from said resistance material; means to secure said flange to said base member and to position said resistance material in heat conducting relationship with respect to said base member; and terminal assemblies secured to each end of said electric resistance material, each terminal assembly comprising a terminal connector having an aperture in its base, prong means extending from the periphery of said aperture and through an aperture in said layer, the axial extent of said prong means substantially corresponding to the thickness of said layer, rivet means extending through the aperture in said terminal, through said layer, and through aperture means in said electric resistance material and clamping said strip against said prong means, whereby said prong means limit the plastic flow of said layer during a riveting operation.
Claim 9
Dependent Claim
42 words
A conduction heating assembly according to claim 2, wherein said securing means includes a sheet of electrical insulating material having a first surface covering and in contact with said first surface of said resistance material and being in heat conducting relationship therewith.
Claim 10
Dependent Claim
23 words
A conduction heating assembly according to claim 7, wherein portions of said first surface of said sheet are bonded to said projecting flange.
Claim 11
Dependent Claim
20 words
A conduction heating assembly according to claim 8, wherein a second surface of said sheet is coated with adhesive means.
Claim 12
Dependent Claim
16 words
A conduction heating assembly according to claim 9, wherein said adhesive means is a pressure-sensitive adhesive.
Claim 13
Dependent Claim
171 words
A conduction heating assembly for heating a base member, comprising: a layer of insulating material; pocket means defined by portions of one surface of said layer; a thin strip of apertured foil-like electric resistance material received in said pocket; means to secure remaining portions of said one surface of said layer to said base member and to position said resistance material in heat conducting relationship with respect to said base member; and terminal assemblies secured to each end of said electric resistance material, each terminal assembly comprising a terminal connector having an aperture in its base, prong means extending from the periphery of said aperture and through an aperture in said layer, the axial extent of said prong means substantially corresponding to the thickness of said layer, rivet means extending through the aperture in said terminal, through said layer, and through aperture means in said electric resistance material and clamping said strip against said prong means, whereby said prong means limit the plastic flow of said layer during a riveting operation.
Claim 14
Dependent Claim
171 words
A conduction heating assembly for heating a base member, comprising: a layer of insulating material; pocket means defined by portions of one surface of said layer; a thin strip of apertured foil-like electric resistance material received in said pocket; means to secure remaining portions of said one surface of said layer to said base member and to position said resistance material in heat conducting relationship with respect to said base member; and terminal assemblies secured to each end of said electric resistance material, each terminal assembly comprising a terminal connector having an aperture in its base, prong means extending from the periphery of said aperture and through an aperture in said layer, the axial extent of said prong means substantially corresponding to the thickness of said layer, rivet means extending through the aperture in said terminal, through said layer, and through aperture means in said electric resistance material and clamping said strip against said prong means, whereby said prong means limit the plastic flow of said layer during a riveting operation.
Claim 15
Dependent Claim
38 words
A conduction heating assembly according to claim 3, wherein said securing means includes a sheet of electrical insulating material having a first surface covering and in contact with said resistance material and being in heat conducting relationship therewith.
Claim 16
Dependent Claim
23 words
A conduction heating assembly according to claim 12, wherein portions of said first surface of said sheet are bonded to said remaining portions.
Claim 17
Dependent Claim
20 words
A conduction heating assembly according to claim 13, wherein a second surface of said sheet is coated with adhesive means.
Claim 18
Dependent Claim
16 words
A conDuction heating assembly according to claim 14, wherein said adhesive means is a pressure-sensitive adhesive.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |