US3559129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable electromagnetic relay
Assignee: Alcatel Lucent SAS
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Filing: 1968-09-12
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Granted: 1971-01-26
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Expires: 1988-09-12
Abstract
Abstract AN ADJUSTABLE ELECTROMAGNETIC RELAY. A MOVABLE ARMATURE IS HELD, IN ITS INOPERATIVE POSITION, IN CONTACT WITH TWO MAGNETIC POLES OF A YOKE BY MEANS OF A POLARIZING FLUX PRODUCED THROUGH THE ARMATURE BY A PERMANENT MAGNET. AN OPPOSING ACTION IS CAUSED BY A SPRING WHICH EXERTS ON THE MOVABLE ARMATURE AN OPPOSING FORCE TENDING TO MOVE IT AWAY FROM ITS HELD POSITION. WHEN A FLUX IS PRODUCED BY A CONTROL WINDING THROUGH THE ARMATURE IN A DIRECTION OPPOSITE TO THAT OF THE POLARIZING FLUX, THE ARMATURE BECOMES UNLOCKED, CEASING TO RESTRAIN THE OPPOSING FORCE AND RELEASING THE MECHANICAL ENERGY OF THE SPRING.
Inventors
- 👤 Claude Quichaud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:30
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/34; H01H51/00; H01H51/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |