US3673537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contactless switching device
Assignee: Siemens AG
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Filing: 1970-09-22
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Granted: 1972-06-27
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Expires: 1990-09-22
Abstract
Abstract A galvanomagnetic resistor is fixedly mounted on a magnetizable yoke structure. A displaceable actuator comprises a permanent magnet having a longitudinal axis and being rotatably mounted in the yoke structure at a part of the yoke structure opposite that at which the galvanomagnetic resistor is mounted. The actuator has a direction of travel substantially transverse to the longitudinal axis of the magnet.
Inventors
- 👤 Karl Greger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:57
CPC Classifications
H; H10; H10N; H10N50/00; H10N50/10; H03; H03K; H03K17/00; H03K17/51; H03K17/90
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
71 words
A contactless switching device comprising a magnetizable yoke structure; a galvanomagnetic resistor fixedly mounted on said yoke structure; and displaceable actuator means comprising a permanent magnet having a longitudinal axis and being rotatably mounted in the yoke structure at a part of said yoke structure opposite that at which said galvanomagnetic resistor is mounted, said actuator means having a direction of travel substantially transverse to the longitudinal axis of the magnet.
Claim 2
Dependent Claim
71 words
A contactless switching device comprising a magnetizable yoke structure; a galvanomagnetic resistor fixedly mounted on said yoke structure; and displaceable actuator means comprising a permanent magnet having a longitudinal axis and being rotatably mounted in the yoke structure at a part of said yoke structure opposite that at which said galvanomagnetic resistor is mounted, said actuator means having a direction of travel substantially transverse to the longitudinal axis of the magnet.
Claim 3
Dependent Claim
42 words
A contactless switching device as claimed in claim 1, wherein the permanent magnet has a planar surface and the yoke structure has a convex roll-off surface at the first-mentioned part thereof in partial contact with the planar surface of the permanent magnet.
Claim 4
Dependent Claim
27 words
A contactless switching device as claimed in claim 1, wherein the actuator means comprises a tappet and spring means interposed between the tappet and the permanent magnet.
References Cited (Backward Citations)
US2924633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |