US3141936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductive springs and ball acceleration switch
Assignee: Individual
•
Filing: 1962-10-17
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Granted: 1964-07-21
•
Expires: 1982-10-17
Abstract
No abstract record available.
Inventors
- 👤 John M Boyle
- 👤 Earl J Donaldson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:59
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/14; H01H35/141; H01H35/142
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
140 words
AN ACCELERATION SWITCH INCLUDING: A PAIR OF RADIALLY DISPLACED CONCENTRICALLY ARRANGED ELECTRICAL CONTACTS; A PAIR OF ELONGATED, CONCENTRICALLY ALIGNED AND RADIALLY DISPLACED COIL SPRING CONDUCTORS, EACH BEING SEPARATELY SUPPORTED AT A FIRST END THEREOF BY A GIVEN CONTACT OF SAID PAIR OF CONTACTS; A DISPLACEABLE SOLID MASS OF ELECTRICAL CONDUCTING MATERIAL SEATED ON THE SECOND END OF ONE OF SAID SPRINGS AND BIASED THEREBY TO ASSUME A DISPLACED RELATIONSHIP WITH RESPECT TO THE SECOND END OF THE OTHER SPRING OF SAID PAIR OF COIL SPRINGS TO THUS ESTABLISH AN AIRGAP BETWEEN THE MASS AND THE OTHER SPRING; AND AN ELECTRICAL CIRCUIT LEAD CONNECTED WITH EACH CONTACT OF SAID PAIR OF CONTACTS, WHEREBY AN ELECTRICAL CIRCUIT MAY BE COMPLETED BETWEEN SAID LEADS BY CAUSING SAID MASS TO ACT AGAINST AND COMPRESS SAID ONE OF SAID SPRINGS SUFFICIENTLY FOR ELIMINATING SAID AIR-GAP
References Cited (Backward Citations)
US2475728A
Cited
US2835759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |