Patent US3624896A successfully refreshed from Google Patents.
US3624896A
Expired / Lapsed
US
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Method of making an electrical moving coil device
Assignee: Dowty Technical Developments Ltd
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Filing: 1969-06-23
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Granted: 1971-12-07
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Expires: 1989-06-23
Abstract
Abstract A SPRING MOUNTING FOR AN ELECTRICAL MOVING COIL DEVICE COMPRISING A PLURALITY OF METALLIC SPRING BLADES EXTENDING FROM A FIXED SUPPORT TO THE MOVING COIL CARRYING MEMBER TO LOCATE THE MOVING COIL CARRYING MEMBER AND THE MOVING COIL FOR RECIPROCATION IN A MAGNETIC FIELD, THE SAID SPRING BLADES ALSO SERVING AS ELECTRICAL CONNECTIONS FOR COIL. THE MOVING COIL DEVICE MAY FROM PART OF A FORCE MOTOR FOR USE IN A PRESSURE REGULATING VALVE FORMING PART OF AN ELECTRO-HYDRUALIC OR ELECTROPNEUMATIC SERVO-VALVE.
Inventors
- 👤 Roger Giles Daubeney
- 👤 Anthony George Lithgow Shore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:02
CPC Classifications
H; H01; H01F; H01F5/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/4902; Y10T29/49105; Y10T29/49789; Y10T29/49792; Y10T29/49796; Y10T29/49799
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |