Patent US3293580A successfully refreshed from Google Patents.
US3293580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latching means for solenoid devices
Assignee: Plessey UK Ltd
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Filing: 1964-06-11
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Granted: 1966-12-20
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Expires: 1984-06-11
Abstract
No abstract record available.
Inventors
- 👤 Michael B Cotton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:41
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/14; H01F7/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
AN ELECTROMAGNETIC SOLENOID DEVICE INCLUDING ELECTRONMAGNETIC DRIVING MEANS HAVING AN ARMATURE AND AN ENERGIZING WINDING, SAID ARMATURE BEING ARRANGED FOR MOVEMENT TO A MINIMUM RELUCTANCE POSITION IN RESPONSE TO THE ENERGIZATION OF SAID WINDING, AN OUTPUT MEMBER COUPLED TO SAID ARMATURE, AND A FIRST LOCKING MEANS FOR PREVENTING MOVEMENT OF SAID OUTPUT MEMBER IN THE DE-ENERGIZED CONDITION OF SAID WINDING, SAID LOCKING MEANS INCLUDING A MAGNETIC MEMBER DISPLACEABLE BY THE MAGNETIC FLUX PRODUCED IN RESPONSE TO THE ENERGIZATION OF SAID WINDING TO RENDER THE LOCKING MEANS INEFFECTIVE AND THEREBY RELEASE THE OUTPUT MEMBER FOR MOVEMENT BY SAID ARMATURE.
Claim 2
Dependent Claim
98 words
AN ELECTROMAGNETIC SOLENOID DEVICE INCLUDING ELECTRONMAGNETIC DRIVING MEANS HAVING AN ARMATURE AND AN ENERGIZING WINDING, SAID ARMATURE BEING ARRANGED FOR MOVEMENT TO A MINIMUM RELUCTANCE POSITION IN RESPONSE TO THE ENERGIZATION OF SAID WINDING, AN OUTPUT MEMBER COUPLED TO SAID ARMATURE, AND A FIRST LOCKING MEANS FOR PREVENTING MOVEMENT OF SAID OUTPUT MEMBER IN THE DE-ENERGIZED CONDITION OF SAID WINDING, SAID LOCKING MEANS INCLUDING A MAGNETIC MEMBER DISPLACEABLE BY THE MAGNETIC FLUX PRODUCED IN RESPONSE TO THE ENERGIZATION OF SAID WINDING TO RENDER THE LOCKING MEANS INEFFECTIVE AND THEREBY RELEASE THE OUTPUT MEMBER FOR MOVEMENT BY SAID ARMATURE.
References Cited (Backward Citations)
US2963915A
Cited
US3164733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |