Patent US3187575A successfully refreshed from Google Patents.
US3187575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resonant bolometer
Assignee: Bulova Watch Co Inc
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Filing: 1963-01-07
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Granted: 1965-06-08
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Expires: 1983-01-07
Abstract
No abstract record available.
Inventors
- 👤 Arthur P Stoliar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:47
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/38; G01J5/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A RESONANT BOLOMETER COMPRISING (A) A TUNING FORK HAVING A PREDETERMINED NATURAL FREQUENCY AND FORMED OF A METALLIC COMPOSITION HAVING A RELATIVELY HIGH TEMPERATURE COEFFICIENT OF THE MODULUS OF ELASTICITY AND PROVIDING A SUBSTANTIALLY LINEAR CHANGE IN FREQUENCY OVER A TEMPERATURE RANGE OF ABOUT -30*C. TO 85*C., (B) AN OSCILLATOR INCORPORATING SAID FORK AND INCLUDING MEANS TO EXCITE SAID FORK INTO VIBRATION AND TO SUSTAIN OSCILLATIONS AT A FREQUENCY DETERMINED BY SAID FORK TO GENERATE AN ALTERNATING WAVE WHOSE FREQUENCY IS PROPORTIONAL TO TEMPERATURES WITHIN SAID RANGE, (C) MEANS TO SUBJECT SAID FORK TO CHANGES IN TEMPERATURE, AND (D) A FREQUENCY METER COUPLED TO SAID OSCILLATOR TO INDICATE THE TEMPERATURE TO WHICH FORK IS SUBJECTED.
Claim 2
Dependent Claim
115 words
A RESONANT BOLOMETER COMPRISING (A) A TUNING FORK HAVING A PREDETERMINED NATURAL FREQUENCY AND FORMED OF A METALLIC COMPOSITION HAVING A RELATIVELY HIGH TEMPERATURE COEFFICIENT OF THE MODULUS OF ELASTICITY AND PROVIDING A SUBSTANTIALLY LINEAR CHANGE IN FREQUENCY OVER A TEMPERATURE RANGE OF ABOUT -30*C. TO 85*C., (B) AN OSCILLATOR INCORPORATING SAID FORK AND INCLUDING MEANS TO EXCITE SAID FORK INTO VIBRATION AND TO SUSTAIN OSCILLATIONS AT A FREQUENCY DETERMINED BY SAID FORK TO GENERATE AN ALTERNATING WAVE WHOSE FREQUENCY IS PROPORTIONAL TO TEMPERATURES WITHIN SAID RANGE, (C) MEANS TO SUBJECT SAID FORK TO CHANGES IN TEMPERATURE, AND (D) A FREQUENCY METER COUPLED TO SAID OSCILLATOR TO INDICATE THE TEMPERATURE TO WHICH FORK IS SUBJECTED.
References Cited (Backward Citations)
US2732748A
Cited
US1832345A
Cited
US2447816A
Cited
US2935711A
Cited
US2971323A
Cited
US3081399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |