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Patent US3271707A successfully refreshed from Google Patents.
US3271707A
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Electromagnetic relay of the bistable type
Assignee: Chauvin Arnoux SAS
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Filing: 1964-11-09
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Granted: 1966-09-06
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Expires: 1984-11-09
Abstract
No abstract record available.
Inventors
- 👤 Koehler Gerard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:15
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/22; H01H51/2209; H01H50/00; H01H50/64; H01H50/643
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A BISTABLE ELECTROMAGNETIC RELAY COMPRISING AN ELECTROMAGNET HAVING A WINDING WITH AN AXIAL DUCT PROVIDED THEREIN, MEANS TO FEED SAID WINDING WITH CONTROL IMPULSES OF OPPOSITE POLARITIES, A MAGNET CIRCUIT ASSOCIATED WITH SAID ELECTROMAGNET, SAID CIRCUIT COMPRISING A STATIONARY CORE AT LEAST PLURALITY HOUSED IN SAID AXIAL DUCT, A SECOND CORE SLIDABLY MOUNTED ALONG SAID AXIAL DUCT BETWEEN A WORKING POSITION WHERE THE AIRGRAP BETWEEN SAID BOTH CORES IS MINIMUM AND A REST POSITION WHERE SAID AIRGAP IS MAXIMUM, A MOVABLE ARMATURE FITTED TO SAID SLIDABLE CORE, RESILIENT MEANS ENGAGING SAID ARMATURE AND TENDING TO RETURN SAID SLIDABLE CORE TOWARD SAID REST POSITION, ONE OF SAID CORES BEING CONSTITUTED BY A MAGNETIC MATERIAL OF LOW COERCIVITY ADAPTED TO BE MAGNETIZED BY THOSE OF SAID IMPULSES HAVING A DEFINITE POLARITY AND TO BE PARTIALLY DEMAGNETIZED BY THOS EOF SAID IMPULSES HAVING THE OPPOSITE POLARITY, THE MAGNETIC PRPERTIES OF SAID ONE CORE BEING SO RELATED TO SAID RESILIENT MEANS THAT WHEN SAID CIRCUIT IS OPEN AFTER SAID MAGNETIZATION THE MAGNETIC
Claim 2
Dependent Claim
168 words
A BISTABLE ELECTROMAGNETIC RELAY COMPRISING AN ELECTROMAGNET HAVING A WINDING WITH AN AXIAL DUCT PROVIDED THEREIN, MEANS TO FEED SAID WINDING WITH CONTROL IMPULSES OF OPPOSITE POLARITIES, A MAGNET CIRCUIT ASSOCIATED WITH SAID ELECTROMAGNET, SAID CIRCUIT COMPRISING A STATIONARY CORE AT LEAST PLURALITY HOUSED IN SAID AXIAL DUCT, A SECOND CORE SLIDABLY MOUNTED ALONG SAID AXIAL DUCT BETWEEN A WORKING POSITION WHERE THE AIRGRAP BETWEEN SAID BOTH CORES IS MINIMUM AND A REST POSITION WHERE SAID AIRGAP IS MAXIMUM, A MOVABLE ARMATURE FITTED TO SAID SLIDABLE CORE, RESILIENT MEANS ENGAGING SAID ARMATURE AND TENDING TO RETURN SAID SLIDABLE CORE TOWARD SAID REST POSITION, ONE OF SAID CORES BEING CONSTITUTED BY A MAGNETIC MATERIAL OF LOW COERCIVITY ADAPTED TO BE MAGNETIZED BY THOSE OF SAID IMPULSES HAVING A DEFINITE POLARITY AND TO BE PARTIALLY DEMAGNETIZED BY THOS EOF SAID IMPULSES HAVING THE OPPOSITE POLARITY, THE MAGNETIC PRPERTIES OF SAID ONE CORE BEING SO RELATED TO SAID RESILIENT MEANS THAT WHEN SAID CIRCUIT IS OPEN AFTER SAID MAGNETIZATION THE MAGNETIC
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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |