US3105925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical actuators with permanent magnets
Assignee: Individual
•
Filing: 1962-06-11
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Granted: 1963-10-01
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Expires: 1982-06-11
Abstract
No abstract record available.
Inventors
- 👤 Daniel D Musgrave
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:42
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1638; H01F7/1646; H01F7/121; H01F7/122
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
107 words
AN ELECTROMAGNETIC ACTUATOR COMPRISING; A COIL ADAPTED FOR PRODUCING AN ELECTROMAGNETIC FIELD; A CORE POSITIONED WITHIN SAID FIELD; ACTUATING MEANS NORMALLY RETAINED AT AN INOPERATIVE POSITION AND MOVABLE TO AN OPERATIVE POSITION; FIRST MOVABLE MAGNETIC MEANS OPERATIVELY CONNECTED TO SAID ACTUATING MEANS AND NORMALLY MAGNECTICALLY ATTRACTED TO SAID CORE; RELEASABLE MECHANICAL DETENT MEANS NORMALLY RETAINING SAID ACTUATING MEANS AT SAID INOPERATIVE POSITION; SECOND MOVABLE MAGNETIC MEANS HAVING OPERATIVELY CONNECTES THERETO BLOCKING MEANS FOR NORMALLY PREVENTING RELEASE OF SAID DETENT MEANS AT A POSITION WHEREAT SAID SECOND MAGNETIC MEANS CONTACTS SAID FIRST MAGNETIC MEANS; AND MEANS FOR APPLYING AN ELECTRIC CURRENT ALTERNATELY IN OPPOSITE DIRECTIONS TO SAID COIL.
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) | 1966-09-30 | 1967-04-01 | 1967-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-30 | 1971-04-01 | 1971-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-30 | 1975-04-01 | 1975-10-01 | $7700.00 | Window Closed / Lapsed |