US3155437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic bearing
Assignee: North American Aviation Corp
•
Filing: 1953-05-21
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Granted: 1964-11-03
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Expires: 1973-05-21
Abstract
No abstract record available.
Inventors
- 👤 Eugene E Kinsey
- 👤 Raymond E Brandes
- 👤 Walter R Evans
- 👤 Bruce A Sawyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:58
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/04; F16C32/0406; F16C32/044; F16C32/0444; F16C32/0446; F16C32/0448; F16C32/0451; F16C32/0474; F16C32/0489; F16C32/0491; G; G01; G01C; G01C19/00; G01C19/02; G01C19/04; G01C19/16; G01C19/24; F16C2370/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A PLURALITY OF ELECTROMAGNETS, A RELATIVELY MOVABLE MEMBER SUSPENDED BY THE MAGNETIC FIELD OF SAID ELECTROMAGNETS AND IN PROXIMITY THERETO, THE MAGNETIC FIELD OF ALL OF SAID ELECTROMAGNETS EXERTING A DIRECT, SUSPENDING FORCE ON SAID MEMBER, AND ELECTRICAL MEANS CONNECTED IN CIRCUIT WITH SAID ELECTROMAGNET SAID ELECTRICAL MEANS RESPONSIVE TO VARIATION IN IMPEDANCE OF SAID ELECTROMAGNEETS INVERSELY IN RESPONSE TO THE VARIATION IN PROXIMITY OF SAID RELATIVELY MOVABLE MEMBER WITH RESPECT TO SAID ELECTROMAGNETS.
Claim 2
Dependent Claim
74 words
A PLURALITY OF ELECTROMAGNETS, A RELATIVELY MOVABLE MEMBER SUSPENDED BY THE MAGNETIC FIELD OF SAID ELECTROMAGNETS AND IN PROXIMITY THERETO, THE MAGNETIC FIELD OF ALL OF SAID ELECTROMAGNETS EXERTING A DIRECT, SUSPENDING FORCE ON SAID MEMBER, AND ELECTRICAL MEANS CONNECTED IN CIRCUIT WITH SAID ELECTROMAGNET SAID ELECTRICAL MEANS RESPONSIVE TO VARIATION IN IMPEDANCE OF SAID ELECTROMAGNEETS INVERSELY IN RESPONSE TO THE VARIATION IN PROXIMITY OF SAID RELATIVELY MOVABLE MEMBER WITH RESPECT TO SAID ELECTROMAGNETS.
References Cited (Backward Citations)
US1589039A
Cited
US1970333A
Cited
US2256937A
Cited
GB539409A
Cited
US2468678A
Cited
US2602660A
Cited
US2566221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |