US3624568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically actuated switching devices
Assignee: AT&T Inc
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Filing: 1970-10-26
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Granted: 1971-11-30
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Expires: 1990-10-26
Abstract
Abstract The remanent magnetization for cobalt-iron compositions in the category known as ''''Remendur'''' is increased by a critical series of processing steps. The most significant departure from conventional processing is in hot working reduction with the alloy maintained at a temperature in which both the Alpha and gamma phases are in thermal equilibrium. The alloys are designed for use in magnetically actuated reed switches.
Inventors
- 👤 Karl Martin Olsen
- 👤 Raymond Christian Stoffers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:18
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/28; H01H51/284; H01H51/285
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
28 words
Device of claim 1 in which said hot deformation is initiated with the said material at a temperature within the range of from 600* C. to 900* C.
References Cited (Backward Citations)
US3364449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |