Patent US3694622A successfully refreshed from Google Patents.
US3694622A
Expired / Lapsed
US
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Heater
Assignee: RALPH L BENTLEY
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Filing: 1971-01-07
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Granted: 1972-09-26
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Expires: 1991-01-07
Abstract
Abstract A heater, that is adapted to be integrally formed as part of a structure to provide heating along or over a surface of the structure, comprises a plurality of layers including at least a resistive layer of a plastic filled with metallic or non-organic particles or powders, a thermally insulating dielectric layer adjacent one side of the resistive layer, and a thermally conductive dielectric layer adjacent another side of the resistive layer. A source of electrical energy is coupled to the resistive layer to cause heating thereof. The thermally insulating layer directs generated heat toward the thermally conductive layer to cause heating over a surface of the structure.
Inventors
- 👤 Ralph L Bentley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:32
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/10; H05B3/12; H05B3/14; H05B3/146; H05B3/68
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
18 words
A heater device as set forth in claim 1 wherein said base material comprises an expandable foam filler.
Claim 2
Dependent Claim
19 words
A heater device as set forth in claim 1 wherein said base material comprises a rigid dielectric support layer.
Claim 3
Dependent Claim
15 words
A heater device as set forth in claim 1 wherein said heating layer comprises carbon.
Claim 4
Dependent Claim
33 words
A heater device as set forth in claim 1 comprising a source of electrical energy external of said device, and wherein said conductive means couples between said source and said resistive heating layer.
Claim 5
Dependent Claim
21 words
A heater device as set forth in claim 1 wherein said heat distributing layer has an exposed surface that is wear-resistant.
Claim 6
Dependent Claim
31 words
A heater device as set forth in claim 6 wherein said heat distributing layer has an exposed surface area that is treated to improve the emissivity for radiation transfer of heat.
Claim 7
Dependent Claim
18 words
A heater device as set forth in claim 1 for use as a floor heater for a room.
Claim 8
Dependent Claim
21 words
A heater device as set forth in claim 1 wherein the electrically conductive particles of said heat sink layer are metallic.
Claim 9
Dependent Claim
21 words
A heater device as set forth in claim 9 wherein the electrically conductive particles of said resistive heating layer are metallic.
Claim 10
Dependent Claim
25 words
A heater device as set forth in claim 1 wherein the electrically conductive particles of said heat sink layer are composed of an organic material.
Claim 11
Dependent Claim
25 words
A heater device as set forth in claim 1 wherein the electrically conductive particles of said heat sink layer are composed of an inorganic material.
Claim 12
Dependent Claim
27 words
A heater device as set forth in claim 1 comprising a thermal and electrical insulating layer adjacent said base material and remote from said heat sink layer.
References Cited (Backward Citations)
CA638250A
Cited
US2750654A
Cited
US2912555A
Cited
US3099578A
Cited
US3453413A
Cited
US3448246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |