US3553955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic watch
Assignee: Timex Group USA Inc
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Filing: 1969-07-08
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Granted: 1971-01-12
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Expires: 1989-07-08
Abstract
Abstract AN ELECTRONIC HOROLOGICAL INSTRUMENT INCLUDES A SOURCE OF POWER, AN ELECTRONIC CIRCUIT, AN OSCILLATOR, SUCH AS A BALANCE WHEEL, CARRYING AN ELECTRIC COIL AND A MAGNET WHOSE FIELD COOPERATES WITH THE COIL. A HUB ON THE BALANCE WHEEL STAFF IS ATTACHED TO ONE END OF A HAIRSPRING WHOSE OPPOSITE END IS CONNECTED TO THE FRAME. THE OSCILLATOR CARRIES A CONDUCTIVE PIN WHICH MAKES CONTACT WITH A SPRING ARM FOR PREDETERMINED PERIODS. THE ELECTRICAL CONNECTIONS TO THE COIL ARE THROUGH THE HAIRSPRING AND THE PIN AND SPRING.
Inventors
- 👤 Eugene R Keeler
- 👤 Norman C Zatsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:10
CPC Classifications
G; G04; G04C; G04C3/00; G04C3/04; G04C3/06; G04C3/061
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |