US3702391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared concentrating emitter
Assignee: Rohr Inc
•
Filing: 1969-10-24
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Granted: 1972-11-07
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Expires: 1989-10-24
Abstract
Abstract A metallic plate coated on one side with plasma sprayed stainless steel is mounted transversely within a cylindrical housing. Metallic cylinders having different lengths are concentrically disposed within the housing and extend from coated side of plate. Plate is electrically heated, causing coating thereon to radiate infrared rays which are filtered by a polyimide sheet extended across end of housing.
Inventors
- 👤 Jerry N Wellnitz
- 👤 Richard S Dummer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:15
CPC Classifications
H; H05; H05B; H05B3/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
24 words
Apparatus as defined in claim 1 wherein said coating is deposited on said plate by spraying the same thereon in the form of plasma.
Claim 2
Dependent Claim
20 words
Apparatus as defined in claim 1 wherein said housing and tubes are cylindrical and concentrically disposed relative to one another.
Claim 3
Dependent Claim
13 words
Apparatus as defined in claim 1 wherein said sheet is formed of polyimide.
Claim 4
Dependent Claim
19 words
Apparatus as defined in claim 1 wherein said tubes are formed of an alloy containing principally iron and chromium.
Claim 5
Dependent Claim
21 words
Apparatus as defined in claim 1 wherein said material coated on said plate is an alloy containing principally iron and chromium.
Claim 6
Dependent Claim
28 words
Apparatus as defined in claim 1 wherein said means for heating the side of said plate remote from said coating comprises electric heating elements disposed against said side.
Claim 7
Dependent Claim
144 words
Infrared apparatus comprising: a cylindrical housing; a metallic plAte mounted within said housing transverse to the longitudinal axis thereof; a coating on one side of said plate consisting of an alloy containing principally iron and chromium and deposited on said plate by plasma spraying; a plurality of cylindrical tubes one end of each of which is located closely adjacent the coated side of said plate, said tubes being formed of an alloy containing iron and chromium and being disposed in concentric, spaced relation relative to said housing with the length of said tubes increasing as the distance between said tubes and the longitudinal axis of said housing increases; a sheet of polyimide disposed across the end of said housing on the coated side of said plate; and a plurality of electric heating elements disposed against the side of said plates remote from said coating.
References Cited (Backward Citations)
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Cited
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Cited
US2933317A
Cited
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Cited
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Cited
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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) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |