Patent US3422691A successfully refreshed from Google Patents.
US3422691A
Expired / Lapsed
US
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Overtravel control mechanism for stepping switches
Assignee: Guardian Electric Manufacturing Co
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Filing: 1966-10-05
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Granted: 1969-01-21
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Expires: 1986-10-05
Abstract
No abstract record available.
Inventors
- 👤 William Warren Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:35
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/02; H01H51/04; H01H51/06; H01H51/08; H01H51/082; H01H51/086; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/1553; Y10T74/1555
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
IN A STEPPING RELAY HAVING A RATCHET WHEEL AND AN ELECTROMAGNETICALLY DRIVEN WHICH ENGAGES WITH AND ADVANCES SAID WHEEL, SAID PAWL BEING CARRIED IN AN ARCUATE PATH AS SAID WHEEL IS ADVANCED, IMPROVED OVERTRAVEL CONTROL MECHANISM WHICH COMPRISES A SPRING LOADED CATCHING
Claim 2
Dependent Claim
42 words
IN A STEPPING RELAY HAVING A RATCHET WHEEL AND AN ELECTROMAGNETICALLY DRIVEN WHICH ENGAGES WITH AND ADVANCES SAID WHEEL, SAID PAWL BEING CARRIED IN AN ARCUATE PATH AS SAID WHEEL IS ADVANCED, IMPROVED OVERTRAVEL CONTROL MECHANISM WHICH COMPRISES A SPRING LOADED CATCHING
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) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |