US3143619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation sensitive thermally responsive switch
Assignee: General Electric Co
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Filing: 1961-06-06
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Granted: 1964-08-04
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Expires: 1981-06-06
Abstract
No abstract record available.
Inventors
- 👤 Wiley M Hummel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:21
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/04; H02; H02B; H02B1/00; H02B1/015; H02B1/04; H01H37/32; H01H2037/326
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
A THERMALLY RESPONSIVE FLAME DETECTING SWITCH USEABLE IN CLOSE PROXIMITY TO A FLAME, SAID SWITCH COMPRISING A BOX-SHAPED HOUSING, SAID HOUSING INCLUDING A BASE WITH A HOLLOW CAVITY THEREIN AND A TRANSLUCENT WALL PORTION HAVING A PERIPHERAL AREA SEALED INTO ENGAGEMENT WITH AN OPEN END OF SAID BASE AND COVERING SAID BASE FOR ADMITTING RADIANT ENERGY INTO SAID CAVITY, A THERMALLY RESPONSIVE MEMBER POSITIONED WITHIN SAID CAVITY, CONTACT MEANS DISPOSED WITHIN SAID CAVITY AND OPERABLE IN RESPONSE TO THERMALLY RESPONSIVE MOVEMENT OF SAID MEMBER, AND A SINGLE PLATE HAVING A REFLECTIVE FACE PERIMETRICALLY FRAMING
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |