US3129554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric timekeeper
Assignee: Suwa Seikosha KK
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Filing: 1962-02-27
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Granted: 1964-04-21
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Expires: 1982-02-27
Abstract
No abstract record available.
Inventors
- 👤 Yasukawa Hideaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:22
CPC Classifications
G; G04; G04B; G04B27/00; G04B27/004; G04C; G04C3/00; G04C3/08; G04C3/10; G04C3/101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
IN AN ELECTRIC TIMEKEEPER OF THE TYPE HAVING AN OSCILLATING MEMBER WHICH IS ELECTRICALLY OSCILLATED AND PROVIDED WITH A DRIVING PAWL WHICH DRIVES A RATCHET WHEEL WHICH, IN TURN, DRIVES A WHEEL TRAIN FOR TIME INDICATION OPERATION; AN IMPROVEMENT COMPRISING A WINDING STEM RECIPROCABLY MOUNTED ON THE TIMEKEEPER, MEANS TO NORMALLY PREVENT RETROGRADE MOVEMENT OF THE RATCHET WHEEL, LEVER MEANS PIVOTALLY MOUNTED ON THE TIMEKEEPER AND HAVING ONE END THEREOF IN ENGAGEMENT WITH SAID WINDING STEM, LOCK MEANS ON THE OTHER END OF SAID LEVER MEANS, SAID WINDING STEM ADAPTED TO BE DRAWN OUTWARDLY RELATIVE TO THE TIMEKEEPER TO PIVOT SAID LEVER MEANS AND CAUSE ENGAGEMENT OF SAID LOCK MEANS WITH A PART OF THE WHEEL TRAIN TO LOCK THE SAME, AND MEANS ON SAID LEVER INTERMEDIATE THE ENDS THEREOF TO EFFECT DISENGAGEMENT OF THE DRIVING PAWL FROM THE RATCHET WHEEL AND DISENGAGEMENT FROM THE RATCHET WHEEL OF THE MEANS WHICH NORMALLY PREVENTS RETROGRADE MOVEMENT OF THE SAME.
Claim 2
Dependent Claim
158 words
IN AN ELECTRIC TIMEKEEPER OF THE TYPE HAVING AN OSCILLATING MEMBER WHICH IS ELECTRICALLY OSCILLATED AND PROVIDED WITH A DRIVING PAWL WHICH DRIVES A RATCHET WHEEL WHICH, IN TURN, DRIVES A WHEEL TRAIN FOR TIME INDICATION OPERATION; AN IMPROVEMENT COMPRISING A WINDING STEM RECIPROCABLY MOUNTED ON THE TIMEKEEPER, MEANS TO NORMALLY PREVENT RETROGRADE MOVEMENT OF THE RATCHET WHEEL, LEVER MEANS PIVOTALLY MOUNTED ON THE TIMEKEEPER AND HAVING ONE END THEREOF IN ENGAGEMENT WITH SAID WINDING STEM, LOCK MEANS ON THE OTHER END OF SAID LEVER MEANS, SAID WINDING STEM ADAPTED TO BE DRAWN OUTWARDLY RELATIVE TO THE TIMEKEEPER TO PIVOT SAID LEVER MEANS AND CAUSE ENGAGEMENT OF SAID LOCK MEANS WITH A PART OF THE WHEEL TRAIN TO LOCK THE SAME, AND MEANS ON SAID LEVER INTERMEDIATE THE ENDS THEREOF TO EFFECT DISENGAGEMENT OF THE DRIVING PAWL FROM THE RATCHET WHEEL AND DISENGAGEMENT FROM THE RATCHET WHEEL OF THE MEANS WHICH NORMALLY PREVENTS RETROGRADE MOVEMENT OF THE SAME.
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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |