US3146530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pendulous north seeking gyroscopic assembly
Assignee: Individual
•
Filing: 1961-10-02
•
Granted: 1964-09-01
•
Expires: 1981-10-02
Abstract
No abstract record available.
Inventors
- 👤 Keith H Clark
- 👤 James V Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:31
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/34; G01C19/38; Y; Y10; Y10T; Y10T74/00; Y10T74/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A PENDULOUS NORTH SEEKING GYROSCOPIC ASSEMBLY COMPRISING: A SELF-LEVELING BEARING HAVING A CONVEX MOVABLE SECTION AND A CONCAVE STATIONARY SECTION DISPOSED BELOW SAID CONVEX SECTION; A HOUSING SUPPORTING SAID STATIONARY SECTION OF SAID BEARING; A SENSING ELEMENT DISPOSED IN SAID HOUSING AND SUPPORTED BY SAID BEARING WHEREIN SAID ELEMENT IS FREE TO OSCILLATE AND IS LEVELED BY SAID BEARING, SAID SENSING ELEMENT BEING DISPOSED BELOW SAID BEARING; MEANS DISPOSED BELOW SAID SENSING ELEMENT AND ENCLOSED BY SAID HOUSING FOR SUPPLYING POWER TO SAID ELEMENT; MECHANISM FOR SUPPORTING AND MAINTAINING SAID ELEMENT IN A STATIONARY POSITION WHILE THE ASSEMBLY IS NOT IN OPERATION; MEANS MAINTAINED IN SAID HOUSING IN CONTACT WITH SAID SENSING ELEMENT FOR DAMPING THE OSCILLATIONS OF SAID SENSING ELEMENT AND FOR PROVIDING BUOYANCY TO SAID ELEMENT; AND MEANS FOR SUBSTANTIALLY LEVELING SAID ASSEMBLY.
Claim 2
Dependent Claim
135 words
A PENDULOUS NORTH SEEKING GYROSCOPIC ASSEMBLY COMPRISING: A SELF-LEVELING BEARING HAVING A CONVEX MOVABLE SECTION AND A CONCAVE STATIONARY SECTION DISPOSED BELOW SAID CONVEX SECTION; A HOUSING SUPPORTING SAID STATIONARY SECTION OF SAID BEARING; A SENSING ELEMENT DISPOSED IN SAID HOUSING AND SUPPORTED BY SAID BEARING WHEREIN SAID ELEMENT IS FREE TO OSCILLATE AND IS LEVELED BY SAID BEARING, SAID SENSING ELEMENT BEING DISPOSED BELOW SAID BEARING; MEANS DISPOSED BELOW SAID SENSING ELEMENT AND ENCLOSED BY SAID HOUSING FOR SUPPLYING POWER TO SAID ELEMENT; MECHANISM FOR SUPPORTING AND MAINTAINING SAID ELEMENT IN A STATIONARY POSITION WHILE THE ASSEMBLY IS NOT IN OPERATION; MEANS MAINTAINED IN SAID HOUSING IN CONTACT WITH SAID SENSING ELEMENT FOR DAMPING THE OSCILLATIONS OF SAID SENSING ELEMENT AND FOR PROVIDING BUOYANCY TO SAID ELEMENT; AND MEANS FOR SUBSTANTIALLY LEVELING SAID ASSEMBLY.
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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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |