US3147350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically operated reed switch
Assignee: Lockheed Martin Corp
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Filing: 1961-12-18
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Granted: 1964-09-01
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Expires: 1981-12-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick A Lindley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:42
CPC Classifications
H; H01; H01H; H01H36/00; H01H36/0006; H01H36/0053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A MAGNETICALLY OPERATED SWITCH DEVICE COMPRISING A ROTATABLE SHAFT, A MAGNETIC ASSEMBLY HAVING THREE POLES MOUNTED SIDE BY SIDE ON THE PERIPHERY OF SAID SHAFT, A PAIR OF NORMALLY OPEN SWITCH ELEMENTS POSITIONED ADJACENT THE ROTATIONAL PATH OF SAID MAGNETIC ASSEMBLY, SAID ASSEMBLY CONSISTING OF TWO SIMILAR POLARITY OUTER POLES AND AN OPPOSITE POLARITY CENTER POLE, AND A BIAS MAGNET OF POLARITY OPPOSITE TO SAID CENTER POLE MOUNTED ON SAID SHAFT AND SPACED LONGITUDINALLY ALONG SAID SHAFT AND IN LINE WITH SAID CENTER POLE.
Claim 2
Dependent Claim
84 words
A MAGNETICALLY OPERATED SWITCH DEVICE COMPRISING A ROTATABLE SHAFT, A MAGNETIC ASSEMBLY HAVING THREE POLES MOUNTED SIDE BY SIDE ON THE PERIPHERY OF SAID SHAFT, A PAIR OF NORMALLY OPEN SWITCH ELEMENTS POSITIONED ADJACENT THE ROTATIONAL PATH OF SAID MAGNETIC ASSEMBLY, SAID ASSEMBLY CONSISTING OF TWO SIMILAR POLARITY OUTER POLES AND AN OPPOSITE POLARITY CENTER POLE, AND A BIAS MAGNET OF POLARITY OPPOSITE TO SAID CENTER POLE MOUNTED ON SAID SHAFT AND SPACED LONGITUDINALLY ALONG SAID SHAFT AND IN LINE WITH SAID CENTER POLE.
References Cited (Backward Citations)
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Cited
US2869563A
Cited
US2895092A
Cited
US2922994A
Cited
US2872597A
Cited
US2929896A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |