Patent US3155791A successfully refreshed from Google Patents.
US3155791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twist responsive switch assembly
Assignee: Individual
•
Filing: 1961-12-20
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Granted: 1964-11-03
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Expires: 1981-12-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Crownover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:21
CPC Classifications
H; H01; H01H; H01H57/00; C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/48; C04B35/50; C04B35/51
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
AN IMPROVED SWITCH ASSEMBLY, COMPRISING A SUBSTANTIALLY CYLINDRICAL BODY OF ELECTROSTRICTIVE CERAMIC MATERIAL, A PAIR OF SPACED ELECTRODES EXTENDING LONGITUDINALLY ON THE BODY AND WINDING ABOUT THE AXIS THEREOF, SAID ELECTRODES BEING IN THE SAME CURVED PLANE DEFINED BY A SURFACE OF SAID BODY, AND AN ELECTRICAL SWITCH CONTACT CARRIED FOR DISPLACEMENT BY THE BODY UPON TWISTING THEREOF ABOUT
Claim 2
Dependent Claim
59 words
AN IMPROVED SWITCH ASSEMBLY, COMPRISING A SUBSTANTIALLY CYLINDRICAL BODY OF ELECTROSTRICTIVE CERAMIC MATERIAL, A PAIR OF SPACED ELECTRODES EXTENDING LONGITUDINALLY ON THE BODY AND WINDING ABOUT THE AXIS THEREOF, SAID ELECTRODES BEING IN THE SAME CURVED PLANE DEFINED BY A SURFACE OF SAID BODY, AND AN ELECTRICAL SWITCH CONTACT CARRIED FOR DISPLACEMENT BY THE BODY UPON TWISTING THEREOF ABOUT
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |