US3302099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic transducer
Assignee: Northrop Grumman Corp
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Filing: 1963-12-06
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Granted: 1967-01-31
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Expires: 1983-12-06
Abstract
No abstract record available.
Inventors
- 👤 Packard Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:51
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
IN COMBINATION, A FIRST MEMBER COMPRISING FIRST AND SECOND FERROMAGNETIC PORTIONS SEPARATED BY A GAP HAVING A FIRST RELUCTANCE, A SECOND FERROMAGNETIC MEMBER MOUNTED ADJACENT SAID FIRST MEMBER FOR RELATIVE MOVEMENT WITH RESPECT TO THE FIRST MEMBER OVER A RANGE OF RELATIVE POSITIONS DISPOSED ABOUT SAID GAP INCLUDING A FIRST POSITION IN WHICH THE RELUCTANCE OF A FIRST PATH INCLUDING SAID SECOND MEMBER AND SAID FIRST PORTION IS EQUAL TO THE RELUCTANCE OF A SECOND PATH INCLUDING SAID SECOND MEMBER AND SAID SECOND PORTION, SAID FIRST AND SECOND MEMBERS BEING SEPARATED BY A SECOND GAP WHICH IS THE SAME IN ALL OF SAID POSITIONS AND HAS A SECOND RELUCTANCE SUBSTANTIALLY LESS THAN SAID FIRST RELUCTANCE, SAID RANGE OF POSITIONS INCLUDING POSITIONS ON EITHER SIDE OF SAID FIRST POSITION IN WHICH THE RELUCTANCES OF SAID PATHS ARE UNEQUAL, A FIRST ELECTROMAGNETIC COIL WOUND ON THE FIRST FERROMAGNETIC PORTION OF SAID FIRST MEMBER, A SECOND ELECTROMAG-
Claim 2
Dependent Claim
154 words
IN COMBINATION, A FIRST MEMBER COMPRISING FIRST AND SECOND FERROMAGNETIC PORTIONS SEPARATED BY A GAP HAVING A FIRST RELUCTANCE, A SECOND FERROMAGNETIC MEMBER MOUNTED ADJACENT SAID FIRST MEMBER FOR RELATIVE MOVEMENT WITH RESPECT TO THE FIRST MEMBER OVER A RANGE OF RELATIVE POSITIONS DISPOSED ABOUT SAID GAP INCLUDING A FIRST POSITION IN WHICH THE RELUCTANCE OF A FIRST PATH INCLUDING SAID SECOND MEMBER AND SAID FIRST PORTION IS EQUAL TO THE RELUCTANCE OF A SECOND PATH INCLUDING SAID SECOND MEMBER AND SAID SECOND PORTION, SAID FIRST AND SECOND MEMBERS BEING SEPARATED BY A SECOND GAP WHICH IS THE SAME IN ALL OF SAID POSITIONS AND HAS A SECOND RELUCTANCE SUBSTANTIALLY LESS THAN SAID FIRST RELUCTANCE, SAID RANGE OF POSITIONS INCLUDING POSITIONS ON EITHER SIDE OF SAID FIRST POSITION IN WHICH THE RELUCTANCES OF SAID PATHS ARE UNEQUAL, A FIRST ELECTROMAGNETIC COIL WOUND ON THE FIRST FERROMAGNETIC PORTION OF SAID FIRST MEMBER, A SECOND ELECTROMAG-
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |