US3117265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic system for the maintenance of the movement of a movable member
Assignee: Movado Watch Co SA
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Filing: 1960-07-08
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Granted: 1964-01-07
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Expires: 1980-07-08
Abstract
No abstract record available.
Inventors
- 👤 Favre Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:10
CPC Classifications
G; G04; G04C; G04C3/00; G04C3/04; G04C3/06; G04C3/065; G04C3/067; G04C3/068
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN A CONTROL SYSTEM FOR A BALANCE WHEEL, THE COMBINATION OF A MEMBER MADE OF MAGNETIC MATERIAL SHOWING SUBSTANTIALLY NO REMANENCE AND RIGID WITH SAID BALANCE WHEEL, A DRIVING WINDING COOPERATING WITH SAID MAGNETIC MEMBER, A CIRCUIT FEEDING SAID DRIVING WINDING WITH PERIODICAL DRIVING PLUSES TO MAINTAIN THE OSCILLATIONS OF THE BALANCE WHEEL, AND A CONDENSER ELECTRICALLY CONNECTED WITH SAID CIRCUIT AND ADAPTED TO BE CHARGED EACH TIME A DRIVING PULSE PASSES THROUGH THE CIRCUIT TO BE DISCHARGED AFTER EACH PULSE INTO THE DRIVING WINDING IN A DIRECTION OPPOSED TO THE DIRECTION OF PASSAGE OF SAID PULSE THROUGH SAID DRIVING WINDING TO CUT OUT ANY RESIDUAL MAGNETIZATION IN THE MAGNETIC MEMBER.
Claim 2
Dependent Claim
111 words
IN A CONTROL SYSTEM FOR A BALANCE WHEEL, THE COMBINATION OF A MEMBER MADE OF MAGNETIC MATERIAL SHOWING SUBSTANTIALLY NO REMANENCE AND RIGID WITH SAID BALANCE WHEEL, A DRIVING WINDING COOPERATING WITH SAID MAGNETIC MEMBER, A CIRCUIT FEEDING SAID DRIVING WINDING WITH PERIODICAL DRIVING PLUSES TO MAINTAIN THE OSCILLATIONS OF THE BALANCE WHEEL, AND A CONDENSER ELECTRICALLY CONNECTED WITH SAID CIRCUIT AND ADAPTED TO BE CHARGED EACH TIME A DRIVING PULSE PASSES THROUGH THE CIRCUIT TO BE DISCHARGED AFTER EACH PULSE INTO THE DRIVING WINDING IN A DIRECTION OPPOSED TO THE DIRECTION OF PASSAGE OF SAID PULSE THROUGH SAID DRIVING WINDING TO CUT OUT ANY RESIDUAL MAGNETIZATION IN THE MAGNETIC MEMBER.
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) | 1967-01-06 | 1967-07-08 | 1968-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-06 | 1971-07-08 | 1972-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-06 | 1975-07-08 | 1976-01-07 | $7700.00 | Window Closed / Lapsed |