US3930488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating panel for use in explosion-prone furnaces
Assignee: Eltra GmbH and Co KG Leicht und Trambauer
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Filing: 1974-10-24
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Granted: 1976-01-06
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Expires: 1994-10-24
Abstract
Abstract A heating panel for use in explosion-prone furnaces comprises a heating element on the inner side thereof, and on the outer side of the heating element a series of spaced parallel sheets of aluminum foil which, in the case of an explosion, simply blow out and are easily replaceable. The panel is rectangular and bordered with insulating material and it is contemplated that a plurality of the panels can be assembled in side-by-side relationship. The heating element may be electrical or run on gas or oil.
Inventors
- 👤 Janos Wallis
- 👤 Horst Hammecke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:33
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/62; F; F26; F26B; F26B25/00; F26B25/06; F26B25/08; F26B3/00; F26B3/28; F26B3/30; F27; F27B; F27B17/00; F27B17/0016; F27D; F27D21/00; F27D99/00; F27D99/0001; F27D99/0006; H05B3/0033; H05B3/0038; F27D2021/0057; F27D2021/0071
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
104 words
A heating panel, particularly for explosion-prone furnaces, comprising a frame of substantially rectangular shape, at least one heating element secured to the frame on the inner side thereof, means to supply power to said heating element, and at least one rectangular sheet of aluminum foil having edges and extending across and surrounded edgewise by the frame on the outer side of the heating element, whereby said foil blows out under the effect of substantial overpressure, said foil having a shiny reflective surface on its side adjacent said heating element there being a plurality of said foils in parallel spaced apart relationship in said frame.
Claim 2
Dependent Claim
104 words
A heating panel, particularly for explosion-prone furnaces, comprising a frame of substantially rectangular shape, at least one heating element secured to the frame on the inner side thereof, means to supply power to said heating element, and at least one rectangular sheet of aluminum foil having edges and extending across and surrounded edgewise by the frame on the outer side of the heating element, whereby said foil blows out under the effect of substantial overpressure, said foil having a shiny reflective surface on its side adjacent said heating element there being a plurality of said foils in parallel spaced apart relationship in said frame.
Claim 3
Dependent Claim
18 words
A heating panel as claimed in claim 1, and heat insulation disposed about the periphery of said frame.
Claim 4
Dependent Claim
17 words
A heating panel as claimed in claim 1, said heating element being of the infra-red type. 9
Claim 5
Dependent Claim
28 words
A heating panel as claimed in claim 1, and a cover plate on the outer side of said panel, said cover plate having at least one orifice therein.
Claim 6
Dependent Claim
21 words
A heating panel as claimed in claim 4, said at least one orifice being closed by a sheet of aluminum foil.
References Cited (Backward Citations)
US2963529A
Cited
US3197185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |