Patent US3141330A successfully refreshed from Google Patents.
US3141330A
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Precipitation sensing system
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1960-12-19
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Granted: 1964-07-21
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Expires: 1980-12-19
Abstract
No abstract record available.
Inventors
- 👤 James E Murray
- 👤 Fred H Guth
- 👤 Powell James David
- 👤 Peterson Wendell Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:43
CPC Classifications
G; G01; G01W; G01W1/00; G01W1/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
IN A PRECIPITATION SENSING SYSTEM, IMPACT SENSING MEANS INCLUDING A SURFACE EXPOSED TO PRECIPITATION AND ELECTRO-MECHANICAL TRANSDUCER MEANS FOR DEVELOPING CONTROL SIGNALS IN RESPONSE TO IMPACTS OF PARTICLES ON SAID SURFACE, REBOUND SENSING MEANS INCLUDING A SURFACE EXPOSED TO PRECIPITATION AND AN ELECTRO-MECHANICAL TRANSDUCER DEVICE IN SPACED RELATION TO SAID SURFACE FOR DEVELOPING CONTROL SIGNALS IN RESPONSE TO REBOUNDS OF PARTICLES FROM SAID SURFACE, PHOTO-OPTICAL MEANS INCLUDING A LIGHT SOURCE FOR ILLUMINATING A CERTAIN REGION THROUGH WHICH PRECIPITATION FALLS AND PHOTOCELL MEANS FOR DERIVING CONTROL SIGNALS IN RESPONSE TO LIGHT IMPULSES ARISING FROM REFLECTION OF LIGHT FROM PARTICLES FALLING THROUGH SAID REGION, MASS ACCUMULATION SENSING MEANS INCLUDING A VIBRATION DEVICE HAVING A SURFACE EXPOSED TO PRECIPITATION AND MEANS FOR DEVELOPING CONTROL SIGNALS IN RESPONSE TO A LOWERED NATURAL RESONANT FREQUENCY OF VIBRATION OF SAID DEVICE CAUSED BY ACCUMULATION OF FREEZING PRECIPITATION ON SAID SURFACE, A PLURALITY OF OUTPUT CIRCUITS CORRESPONDING TO VARIOUS FORMS OF PRECIPITATION, AND LOGIC CIRCUITRY RESPONSIVE TO SAID CONTROL SIGNALS FOR SELECTIVELY ENERGIZING SAID OUTPUT CIRCUITS.
Claim 2
Dependent Claim
169 words
IN A PRECIPITATION SENSING SYSTEM, IMPACT SENSING MEANS INCLUDING A SURFACE EXPOSED TO PRECIPITATION AND ELECTRO-MECHANICAL TRANSDUCER MEANS FOR DEVELOPING CONTROL SIGNALS IN RESPONSE TO IMPACTS OF PARTICLES ON SAID SURFACE, REBOUND SENSING MEANS INCLUDING A SURFACE EXPOSED TO PRECIPITATION AND AN ELECTRO-MECHANICAL TRANSDUCER DEVICE IN SPACED RELATION TO SAID SURFACE FOR DEVELOPING CONTROL SIGNALS IN RESPONSE TO REBOUNDS OF PARTICLES FROM SAID SURFACE, PHOTO-OPTICAL MEANS INCLUDING A LIGHT SOURCE FOR ILLUMINATING A CERTAIN REGION THROUGH WHICH PRECIPITATION FALLS AND PHOTOCELL MEANS FOR DERIVING CONTROL SIGNALS IN RESPONSE TO LIGHT IMPULSES ARISING FROM REFLECTION OF LIGHT FROM PARTICLES FALLING THROUGH SAID REGION, MASS ACCUMULATION SENSING MEANS INCLUDING A VIBRATION DEVICE HAVING A SURFACE EXPOSED TO PRECIPITATION AND MEANS FOR DEVELOPING CONTROL SIGNALS IN RESPONSE TO A LOWERED NATURAL RESONANT FREQUENCY OF VIBRATION OF SAID DEVICE CAUSED BY ACCUMULATION OF FREEZING PRECIPITATION ON SAID SURFACE, A PLURALITY OF OUTPUT CIRCUITS CORRESPONDING TO VARIOUS FORMS OF PRECIPITATION, AND LOGIC CIRCUITRY RESPONSIVE TO SAID CONTROL SIGNALS FOR SELECTIVELY ENERGIZING SAID OUTPUT CIRCUITS.
References Cited (Backward Citations)
US2704455A
Cited
US2318646A
Cited
US2287786A
Cited
US2390739A
Cited
US2517545A
Cited
US2508996A
Cited
US2691159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |