US3229376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pendulous gyrocompass
Assignee: North American Aviation Corp
•
Filing: 1964-01-02
•
Granted: 1966-01-18
•
Expires: 1984-01-02
Abstract
No abstract record available.
Inventors
- 👤 Doyle E Wilcox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:53
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/34; G01C19/38; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1229
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A GYROCOMPASS COMPRISING: A ROTOR HAVING A SPIN AXIS, FIRST BEARINGS SUPPORTING SAID ROTOR FOR ROTATION ABOUT SAID SPIN AXIS, A GIMBAL SUPPORTING SAID ROTOR BEARINGS, SECOND BEARING SUPPORTING SAID GIMBAL FOR ROTATION ABOUT AN AXIS PERPENDICULAR TO SAID SPIN AXIS, A GYROSCOPE CASE SUPPORTING SAID SECOND BEARINGS, A FRAME, FLEXURE BEARING MEANS FOR SUSPENDING SAID GYROSCOPE CASE FROM SAID FRAME PENDULOUSLY WITH ANGULAR FREEDOM ABOUT ONLY A HORIZONTAL AXIS PERPENDICULAR TO SAID AXIS OF SUPPORT OF SAID GIMBAL, PICKOFF MEANS FOR DETECTING ROTATIONAL DISPLACEMENT OF SAID GIMBAL RELATIVE TO SAID CASE, SERVO MEANS DISPOSED ON ONE OF SAID GRIMBAL OR SAID CASE ACTING UPON THE OTHER TO APPLY TORQUING ACTION AND REACTION BETWEEN SAID GIMBAL AND SAID CASE AND RESPONSIVE TO SAID PICKOFF MEANS FOR ORIENTING SAID GIMBAL RELATIVE TO SAID CASE TO MINIMIZE THE OUTPUT OF SAID PICKOFF MEANS.
Claim 2
Dependent Claim
141 words
A GYROCOMPASS COMPRISING: A ROTOR HAVING A SPIN AXIS, FIRST BEARINGS SUPPORTING SAID ROTOR FOR ROTATION ABOUT SAID SPIN AXIS, A GIMBAL SUPPORTING SAID ROTOR BEARINGS, SECOND BEARING SUPPORTING SAID GIMBAL FOR ROTATION ABOUT AN AXIS PERPENDICULAR TO SAID SPIN AXIS, A GYROSCOPE CASE SUPPORTING SAID SECOND BEARINGS, A FRAME, FLEXURE BEARING MEANS FOR SUSPENDING SAID GYROSCOPE CASE FROM SAID FRAME PENDULOUSLY WITH ANGULAR FREEDOM ABOUT ONLY A HORIZONTAL AXIS PERPENDICULAR TO SAID AXIS OF SUPPORT OF SAID GIMBAL, PICKOFF MEANS FOR DETECTING ROTATIONAL DISPLACEMENT OF SAID GIMBAL RELATIVE TO SAID CASE, SERVO MEANS DISPOSED ON ONE OF SAID GRIMBAL OR SAID CASE ACTING UPON THE OTHER TO APPLY TORQUING ACTION AND REACTION BETWEEN SAID GIMBAL AND SAID CASE AND RESPONSIVE TO SAID PICKOFF MEANS FOR ORIENTING SAID GIMBAL RELATIVE TO SAID CASE TO MINIMIZE THE OUTPUT OF SAID PICKOFF MEANS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |