Patent US3214983A successfully refreshed from Google Patents.
US3214983A
Expired / Lapsed
US
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Attitude reference
Assignee: North American Aviation Corp
•
Filing: 1960-04-11
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Granted: 1965-11-02
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Expires: 1980-04-11
Abstract
No abstract record available.
Inventors
- 👤 Leonard C Dozier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:48
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/10; G01C21/12; G01C21/16; G01C21/18; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1221
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
77 words
AN ATTITUDE REFERENCE COMPRISING: SUPPORT MEANS, A MECHANICALLY SCHULER-TUNED VERTICAL GYROSCOPE MOUNTED UPON SAID SUPPORT MEANS AND PROVIDING A VERTICAL REFERENCE OFFSET FROM THE LOCAL VERTICAL BY A PREDETERMINED FUNCTION OF VELOCITY OF SAID SUPPORT MEANS, MEANS FOR SENSING SAID VELOCITY, MEANS FOR GENERATING CORRECTION SIGNALS IN RESPONSE TO SAID SENSING MEANS INDICATIVE OF SAID OFFSET FROM VERTICAL, AN AZIMUTH GYROSCOPE, AND MEANS RESPONSIVE TO SAID VERTICAL GYROSCOPE AND SAID CORRECTION SIGNALS FOR LEVELLING SAID AZIMUTH GYROSCOPE.
References Cited (Backward Citations)
US1932210A
Cited
US2501885A
Cited
US2728233A
Cited
US2809528A
Cited
US2835132A
Cited
US2879669A
Cited
US2771779A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |