US3370278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic bistable device and control system using such devices
Assignee: International Standard Electric Corp
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Filing: 1963-10-23
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Granted: 1968-02-20
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Expires: 1983-10-23
Abstract
No abstract record available.
Inventors
- 👤 Franciscus J J Hendrickx
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:37
CPC Classifications
H; H01; H01H; H01H36/00; H01H36/0073; B; B07; B07C; B07C3/00; B07C3/003; B07C3/005; B07C3/10; B07C3/16; F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/08; F16K31/082; H01H36/0006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A MAGNETIC DEVICE COMPRISING A PERMANENT MAGNETIC ELEMENT HAVING AT LEAST TWO POLES, A MAGNETIC SOURCE HAVING TWO POSSIBLE CONDITIONS OF MAGNETIZATION, MEANS SUPPORTING SAID ELEMENT FOR ROTATION RELATIVE TO A GIVEN AXIAL REFERENCE ON SAID SUPPORTING MEANS, FURTHER SUPPORTING MEANS SUPPORTING SAID ELEMENT AND SAID SUPPORTING MEANS FOR COUPLING SAID ELEMENT TO SAID MAGNETIZING SOURCE TO SITUATE SAID ELEMENT IN AN ANGULAR POSITION DETERMINED BY THE STATE OF MAGNETIZATION OF SAID SOURCE, AND HOLDING MEANS MOUNTED ON SAID FURTHER SUPPORTING MEANS FOR COOPERATING WITH SAID MAGNETIC ELEMENT TO STABLY RETAIN THE LATTER IN SAID POSITION DETERMINED BY SAID SOURCE, SAID HOLDING MEANS COMPRISING AN AUXILIARY ROTATABLY MOUNTED MAGNETIC ELEMENT WHICH IS A PERMANENT MAGNET HAVING AT LEAST TWO POLES AND WHICH IS MOUNTED IN CLOSE PROXIMITY TO THE MAIN MAGNETIC ELEMENT.
Claim 2
Dependent Claim
132 words
A MAGNETIC DEVICE COMPRISING A PERMANENT MAGNETIC ELEMENT HAVING AT LEAST TWO POLES, A MAGNETIC SOURCE HAVING TWO POSSIBLE CONDITIONS OF MAGNETIZATION, MEANS SUPPORTING SAID ELEMENT FOR ROTATION RELATIVE TO A GIVEN AXIAL REFERENCE ON SAID SUPPORTING MEANS, FURTHER SUPPORTING MEANS SUPPORTING SAID ELEMENT AND SAID SUPPORTING MEANS FOR COUPLING SAID ELEMENT TO SAID MAGNETIZING SOURCE TO SITUATE SAID ELEMENT IN AN ANGULAR POSITION DETERMINED BY THE STATE OF MAGNETIZATION OF SAID SOURCE, AND HOLDING MEANS MOUNTED ON SAID FURTHER SUPPORTING MEANS FOR COOPERATING WITH SAID MAGNETIC ELEMENT TO STABLY RETAIN THE LATTER IN SAID POSITION DETERMINED BY SAID SOURCE, SAID HOLDING MEANS COMPRISING AN AUXILIARY ROTATABLY MOUNTED MAGNETIC ELEMENT WHICH IS A PERMANENT MAGNET HAVING AT LEAST TWO POLES AND WHICH IS MOUNTED IN CLOSE PROXIMITY TO THE MAIN MAGNETIC ELEMENT.
References Cited (Backward Citations)
US2770796A
Cited
US2827531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |