US3363856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eddy current nutation damper
Assignee: United States Department of the Navy
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Filing: 1966-09-28
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Granted: 1968-01-16
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Expires: 1986-09-28
Abstract
No abstract record available.
Inventors
- 👤 Barry E Tossman
- 👤 Frederick F Mobley
- 👤 Robert E Fischell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:04
CPC Classifications
B; B64; B64G; B64G1/00; B64G1/22; B64G1/24; B64G1/38; B64G1/244; B64G1/28; B64G1/281; B64G1/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
IN A SPACECRAFT, A NUTATION DAMPING SYSTEM COMPRISING, A PAIR OF ARCUATE HOLLOW TUBE MEMBERS AFFIXED TO SAID SPACECRAFT IN A PLANE NORMAL TO A SELECTED AXIS OF SAID SPACECRAFT AND BEING DIAMETRICALLY OPPOSITE EACH OTHER ABOUT SAID AXIS, AND A PAIR OF MOVABLE MEMBERS, ONE OF WHICH IS DISPOSED WITHIN EACH OF SAID HOLLOW TUBE MEMBERS AND BEING MOVABLE THEREIN WHEN SAID SPACECRAFT NUTATES ABOUT SAID AXIS, CERTAIN OF SAID MOVABLE MEMBERS AND TUBE MEMBERS BEING PERMANENTLY MAGNETIZED AND THE OTHERS OF SAID MOVABLE MEMBERS AND TUBE MEMBERS BEING CONSTRUCTED OF ELECTRICALLY CONDUCTIVE, NON-MAGNETIC MATERIAL, WHEREBY MOTION OF SAID MOVABLE MEMBERS WITHIN SAID TUBE MEMBERS CAUSES THE GENERATION OF EDDY CURRENTS IN THE CONDUCTIVE ONES OF SAID MOVABLE MEMBERS AND TUBE MEMBERS EFFECTIVE TO DISSIPATE THE NUTATION ENERGY OF SAID SPACECRAFT.
Claim 2
Dependent Claim
132 words
IN A SPACECRAFT, A NUTATION DAMPING SYSTEM COMPRISING, A PAIR OF ARCUATE HOLLOW TUBE MEMBERS AFFIXED TO SAID SPACECRAFT IN A PLANE NORMAL TO A SELECTED AXIS OF SAID SPACECRAFT AND BEING DIAMETRICALLY OPPOSITE EACH OTHER ABOUT SAID AXIS, AND A PAIR OF MOVABLE MEMBERS, ONE OF WHICH IS DISPOSED WITHIN EACH OF SAID HOLLOW TUBE MEMBERS AND BEING MOVABLE THEREIN WHEN SAID SPACECRAFT NUTATES ABOUT SAID AXIS, CERTAIN OF SAID MOVABLE MEMBERS AND TUBE MEMBERS BEING PERMANENTLY MAGNETIZED AND THE OTHERS OF SAID MOVABLE MEMBERS AND TUBE MEMBERS BEING CONSTRUCTED OF ELECTRICALLY CONDUCTIVE, NON-MAGNETIC MATERIAL, WHEREBY MOTION OF SAID MOVABLE MEMBERS WITHIN SAID TUBE MEMBERS CAUSES THE GENERATION OF EDDY CURRENTS IN THE CONDUCTIVE ONES OF SAID MOVABLE MEMBERS AND TUBE MEMBERS EFFECTIVE TO DISSIPATE THE NUTATION ENERGY OF SAID SPACECRAFT.
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) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |