Patent US3572143A successfully refreshed from Google Patents.
US3572143A
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Switches driven by stretchable energy accumulators of the crankshaftspring type
Assignee: Smit Nijmegen Electrotechnische Fabrieken NV
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Filing: 1969-09-24
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Granted: 1971-03-23
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Expires: 1989-09-24
Abstract
Abstract A SWITCH DRIVEN BY AN ENERGY ACCUMULATOR OF THE CRANKSHAFT-SPRING TYPE VIA A ROTATABLE DISC HAVING EQUIANGULARLY SPACED SLOTS AND VIA A DRIVING MEMBER COOPERATING WITH SAID DISC AND DRIVEN BY A SHAFT, SAID DRIVING MEMBER TEMPORARILY ENGAGING EACH TIME, DURING ITS MOVEMENT, A SLOT OF SAID DISC TO TAKE THE LATTER ALONG FOR ITS STEPWISE ROTATION, AND IN WHICH THE MOVABLE SWITCH PART IS POSITIVELY COUPLED WITH SAID DISC AND THE CRANKSHAFT IS POSITIVELY COUPLED WITH SAID DRIVING MEMBER VIA TWO COOPERATING ELLIPTICAL TOOTHED WHEELS.
Inventors
- 👤 Gerardus A Van Riemsdijk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:11
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/0005; H01H9/0027; B; B21; B21F; B21F35/00; F; F16; F16H; F16H33/00; F16H33/02; H01H3/00; H01H3/32; H01H3/40; F16H2706/00; H01H3/44; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1503; Y10T74/1508; Y10T74/19; Y10T74/1987; Y10T74/19879; Y10T74/19884
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |