Patent US3607445A successfully refreshed from Google Patents.
US3607445A
Expired / Lapsed
US
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Thermal apparatus
Assignee: Rdf Corp
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Filing: 1968-02-19
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Granted: 1971-09-21
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Expires: 1988-02-19
Abstract
Abstract A thermal apparatus having n, unitary, planar, thermoelectric elements arranged to produce n-1 thermoelectric junctions where the number of elements ''''n'''' is an odd number of five or more. The thermoelectric junctions can be arranged in series, parallel, or combinational configurations. Various geometries are used to produce substantially planar thermopiles having a very high junction density per unit area.
Inventors
- 👤 Frank F Hines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:58
CPC Classifications
G; G01; G01K; G01K17/00; G01K7/00; G01K7/02; H; H10; H10N; H10N10/00; H10N10/80; H10N10/81; H10N10/817
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
The thermal apparatus of claim 1 wherein said first and second thermoelectric portions are offset in opposite directions from the axis of said connecting portion.
Claim 2
Dependent Claim
19 words
The apparatus of claim 1 wherein said means for connecting said thermoelectric elements comprises a plurality of edge welds.
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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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |