Patent US1571132A successfully refreshed from Google Patents.
Patent US3198969A successfully refreshed from Google Patents.
US3198969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyroelectric generator
Assignee: Sonus Corp
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Filing: 1961-03-03
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Granted: 1965-08-03
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Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
- 👤 Kolm Carl
- 👤 Peter H Fowler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:43
CPC Classifications
H; H10; H10N; H10N15/00; H10N15/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
AN ELECTRICAL GENERATING SYSTEM COMPRISING, IN COMBINATION, A PYROELECTRIC TRANSDUCER HAVING A PAIR OF ELECTRODES, SAID TRANSDUCER BEING CAPABLE OF DEVELOPING A VOLTAGE BETWEEN SAID ELECTRODES IN RESPONSE TO CHANGES IN ITS TEMPERATURE, AN ELECTRICAL LOAD CONNECTED TO SAID TRANSDUCER, A RADIANT HEAT SOURCE, A HEAT SINK, A RELATIVELY EFFICIENT HEAT ABSORBING SURFACE ON SAID TRANSDUCER, AND MEANS FOR ROTATING SAID TRANSDUCER SO THAT SAID SURFACE CYCLICALLY FACES SAID HEAT SOURCE AND THEN SAID HEAT SINK.
Claim 2
Dependent Claim
76 words
AN ELECTRICAL GENERATING SYSTEM COMPRISING, IN COMBINATION, A PYROELECTRIC TRANSDUCER HAVING A PAIR OF ELECTRODES, SAID TRANSDUCER BEING CAPABLE OF DEVELOPING A VOLTAGE BETWEEN SAID ELECTRODES IN RESPONSE TO CHANGES IN ITS TEMPERATURE, AN ELECTRICAL LOAD CONNECTED TO SAID TRANSDUCER, A RADIANT HEAT SOURCE, A HEAT SINK, A RELATIVELY EFFICIENT HEAT ABSORBING SURFACE ON SAID TRANSDUCER, AND MEANS FOR ROTATING SAID TRANSDUCER SO THAT SAID SURFACE CYCLICALLY FACES SAID HEAT SOURCE AND THEN SAID HEAT SINK.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |