Patent US4883764A successfully refreshed from Google Patents.
Patent US3132268A successfully refreshed from Google Patents.
US3132268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motion e.m.f. generating transducer
Assignee: Force Controls Co
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Filing: 1962-03-05
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Granted: 1964-05-05
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Expires: 1982-03-05
Abstract
No abstract record available.
Inventors
- 👤 Martin L Abel
- 👤 Winters John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:40
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/34
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
122 words
IN A TRANSDUCER FOR SENSING A CONDITION AND OPERATING AN ELECTRICAL CIRCUIT IN RESPONSE THERETO INCLUDING A CORE HAVING A COIL WOUND THEREON AND A PERMANENT MAGNET ASSOCAITED THEREWITH, AN ARMATURE MOVABLE INTO AND OUT OF ENGAGEMENT WITH SAID CORE, AN ACTUATING MEMBER ADAPTED FOR MOVEMENT IN RESPONSE TO CHANGE IN THE CONDITION BEING SENSED, A MOTION TRANSMITTING CONNECTION BETWEEN SAID ARMATURE AND SAID ACTUATING MEMBR SO THAT SAID ARMATURE IS MOVABLE WITH SAID ACTUATING MEMBER TOWARD SAID CORE UNTIL AND ARMATURE A SPACED A PREDETERMINED DISTANCE FROM SAID CORE WHEREUPON THE MAGNETIC ATTRACTION CAUSES SAID ARMATURE TO SNAP INTO ENGAGEMENT WITH SAID CORE THEREBY TO INDUCE A CURRENT IN SAID COIL INDEPENDENT OF THE RATE OF MOVEMENT OF SAID ACTUATING MEMBER.
References Cited (Backward Citations)
US3035520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |