US3611068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contactless pressure sensitive semiconductor switch
Assignee: Panasonic Holdings Corp
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Filing: 1970-05-20
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Granted: 1971-10-05
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Expires: 1990-05-20
Abstract
Abstract A contactless switching device in which the conventional switch contacts are replaced by a semiconductor element whose resistivity is remarkably reduced when a pressure is imposed thereon.
Inventors
- 👤 Takashi Fujita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:18
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/10; H10; H10D; H10D99/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
69 words
A contactless switching device according to claim 1 wherein said manually operated means comprises lever means pivotally mounted in said housing, said spring means being mounted between said electrode at the other side of said element and one end of said lever means, and actuating means slidable alonG said lever means to cause said lever means to pivot and thereby apply stress to said element through said spring means.
References Cited (Backward Citations)
US2469569A
Cited
US3102420A
Cited
US3132408A
Cited
US3310502A
Cited
US3403307A
Cited
US3335233A
Cited
US3284750A
Cited
GB1055418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |