Patent US4918650A successfully refreshed from Google Patents.
Patent US3264554A successfully refreshed from Google Patents.
US3264554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitor goniometer compass
Assignee: Lockheed Martin Corp
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Filing: 1964-04-16
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Granted: 1966-08-02
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Expires: 1984-04-16
Abstract
No abstract record available.
Inventors
- 👤 Paul F Hayner
- 👤 Thomas E Woodruff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:07
CPC Classifications
G; G01; G01C; G01C17/00; G01C17/02; G01C17/04; G01C17/20; G01C17/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A GONIOMETER COMPASS COMPRISING, IN COMBINATION, A. A HOUSING, B. A SHAFT MOUNTED IN SAID HOUSING FOR ROTATION, C. AT LEAST ONE COMPASS MAGNET MOUNTED ON SAID SHAFT, D. A CARDIOID-SHAPED CONDUCTOR SECURED ON SAID SHAFT, E. A REFERENCE SOURCE OF ALTERNATING POTENTIAL, F. A PLURALITY OF EQUIANGULAR CONDUCTING ELEMENTS MOUNTED WITHIN SAID HOUSING, G. ONE OR MORE OF SAID ELEMENTS HAVING A CAPACITIVE RELATION OF SAID CARDIOID PLATE, H. SAID ELEMENTS BEING CONNECTED TO SAID REFERENCE SOURCE OF ALTERNATING POTENTIAL AT POINTS PROGRESSIVELY DIFFERING IN PHASE, AND I. MEANS FOR CONDUCTING OUT OF SAID CASING A VOLTAGE PROPORTIONAL TO THAT ON SAID CARDIOID PLATE.
Claim 2
Dependent Claim
105 words
A GONIOMETER COMPASS COMPRISING, IN COMBINATION, A. A HOUSING, B. A SHAFT MOUNTED IN SAID HOUSING FOR ROTATION, C. AT LEAST ONE COMPASS MAGNET MOUNTED ON SAID SHAFT, D. A CARDIOID-SHAPED CONDUCTOR SECURED ON SAID SHAFT, E. A REFERENCE SOURCE OF ALTERNATING POTENTIAL, F. A PLURALITY OF EQUIANGULAR CONDUCTING ELEMENTS MOUNTED WITHIN SAID HOUSING, G. ONE OR MORE OF SAID ELEMENTS HAVING A CAPACITIVE RELATION OF SAID CARDIOID PLATE, H. SAID ELEMENTS BEING CONNECTED TO SAID REFERENCE SOURCE OF ALTERNATING POTENTIAL AT POINTS PROGRESSIVELY DIFFERING IN PHASE, AND I. MEANS FOR CONDUCTING OUT OF SAID CASING A VOLTAGE PROPORTIONAL TO THAT ON SAID CARDIOID PLATE.
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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |