US3916151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric radiation and convection heater for domestic use
Assignee: Emerson Automation Solutions Final Control France SARL
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Filing: 1974-01-14
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Granted: 1975-10-28
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Expires: 1994-01-14
Abstract
Abstract An electric convection and radiation heater for domestic use has a series of heating resistors completely embedded in a solid heat conducting material which adheres to the surface of trapezoidal corrugations of a convection and radiation plate. Each resistor comprises a single length of wire positioned at the summit of a corrugation and coextensive in length therewith. The heat conductive material fills only a minor portion of the depth of each corrugation in covering relation to the resistor therein. The heat conductive material can comprise a hardenable binder such as an epoxy resin containing at least 60 percent by weight of graphite, copper or aluminum powder. The bases of the corrugations are spaced apart a distance greater that the width of the summits.
Inventors
- 👤 Georges Reix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:52
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/42; H05B3/48; H05B3/50; F; F24; F24C; F24C7/00; F24C7/06; F24C7/062; Y; Y10; Y10S; Y10S165/00; Y10S165/905
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
151 words
An electric heater for domestic use comprising a corrugated metallic radiation and convection element, and a series of electric resistors in the corrugations of said element, each resistor being completely embedded in a solid heat-conducting material which adheres to the surface of the corrugations of said element in the immediate vicinity of said resistor, said element comprising a plate having corrugations of substantially trapezoidal cross section each formed by a pair of convergent generally planar flanks joined by a generally planar summit portion, a resistor comprising a single length of wire positioned at the summit of each of said corrugations and coextensive in length with the length of the corrugations, said heat-conductive material filling a minor portion of the depth of each corrugation in covering relation to the resistor therein with the remainder of the corrugation being free of said heat-conducting material so that the surfaces of the flanks are exposed.
Claim 2
Dependent Claim
151 words
An electric heater for domestic use comprising a corrugated metallic radiation and convection element, and a series of electric resistors in the corrugations of said element, each resistor being completely embedded in a solid heat-conducting material which adheres to the surface of the corrugations of said element in the immediate vicinity of said resistor, said element comprising a plate having corrugations of substantially trapezoidal cross section each formed by a pair of convergent generally planar flanks joined by a generally planar summit portion, a resistor comprising a single length of wire positioned at the summit of each of said corrugations and coextensive in length with the length of the corrugations, said heat-conductive material filling a minor portion of the depth of each corrugation in covering relation to the resistor therein with the remainder of the corrugation being free of said heat-conducting material so that the surfaces of the flanks are exposed.
Claim 3
Dependent Claim
22 words
An electric heater as claimed in claim 1, the portions of said plate between two successive corrugations being wider than said summits.
Claim 4
Dependent Claim
30 words
An electric heater as claimed in claim 1, said heat conducting material consisting essentially of at least 60 percent by weight of a heat conducting powder in a hardenable binder.
Claim 5
Dependent Claim
14 words
An electric heater as claimed in claim 3, said binder being an epoxy resin.
Claim 6
Dependent Claim
21 words
An electric heater as claimed in claim 3, said powder being selected from the group consisting of graphite, copper and aluminum.
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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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |