Patent US3307412A successfully refreshed from Google Patents.
US3307412A
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North-seeking gyro system
Assignee: Linde Sverige AB
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Filing: 1963-02-25
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Granted: 1967-03-07
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Expires: 1983-02-25
Abstract
No abstract record available.
Inventors
- 👤 Granqvist Carl-Erik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:51
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/34; G01C19/38; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1261; Y10T74/1279
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A NORTH-SEEKING GYRO ARRANGEMENT COMPRISING A GIMBAL, A GYRO HOUSING BEING ROTATABLY MOUNTED IN A GIMBAL, A GYRO WHEEL ROTATABLE IN SAID HOUSING, MEANS FOR ROTATING SAID GIMBAL AT SUBSTANTIALLY CONSTANT SPEED, A PICKUP DEVICE HAVING ONE MEMBER CONNECTED WITH THE GIMBAL AND ANOTHER MEMBER CONNECTED WITH THE GYRO HOUSING, SAID PICKUP MEMBER GENERATING A SIGNAL INDICATIVE OF THE POSITION OF THE GYRO HOUSING RELATIVE TO THE GIMBAL, MEANS FOR APPLYING SAID SIGNAL TO SAID GIMBAL ROTATING MEANS FOR CONTROLLING THE SPEED OF ROTATION OF THE GIMBAL, MEANS FOR GENERATING A REFERENCE SIGNAL INDICATIVE OF THE MOMENTARY POSITION OF THE GIMBAL WITH REFERENCE TO A FIXED DIRECTION, AND MEANS FOR COMPARING
Claim 2
Dependent Claim
111 words
A NORTH-SEEKING GYRO ARRANGEMENT COMPRISING A GIMBAL, A GYRO HOUSING BEING ROTATABLY MOUNTED IN A GIMBAL, A GYRO WHEEL ROTATABLE IN SAID HOUSING, MEANS FOR ROTATING SAID GIMBAL AT SUBSTANTIALLY CONSTANT SPEED, A PICKUP DEVICE HAVING ONE MEMBER CONNECTED WITH THE GIMBAL AND ANOTHER MEMBER CONNECTED WITH THE GYRO HOUSING, SAID PICKUP MEMBER GENERATING A SIGNAL INDICATIVE OF THE POSITION OF THE GYRO HOUSING RELATIVE TO THE GIMBAL, MEANS FOR APPLYING SAID SIGNAL TO SAID GIMBAL ROTATING MEANS FOR CONTROLLING THE SPEED OF ROTATION OF THE GIMBAL, MEANS FOR GENERATING A REFERENCE SIGNAL INDICATIVE OF THE MOMENTARY POSITION OF THE GIMBAL WITH REFERENCE TO A FIXED DIRECTION, AND MEANS FOR COMPARING
References Cited (Backward Citations)
US2552132A
Cited
US2981113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |