US3367104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Watch calendar drive mechanism
Assignee: Hamilton Watch Co
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Filing: 1966-03-11
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Granted: 1968-02-06
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Expires: 1986-03-11
Abstract
No abstract record available.
Inventors
- 👤 Donald J Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:49
CPC Classifications
G; G04; G04B; G04B19/00; G04B19/24; G04B19/243; G04B19/247; G04B19/253; G04B19/25333; G04B19/25373
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A CALENDAR MECHANISM FOR TIMEPIECES COMPRISING DATE INDICATING MEANS, A SPRING, MEANS COUPLED TO ONE END OF SAID SPRING FOR CONTINUOUSLY WINDING SAID SPRING FROM THE POWER TRAIN OF SAID TIMEPIECE, INDEXING MEANS COUPLED TO THE OTHER END OF SAID SPRING AND NORMLLLY SPACED FROM SAID DATE INDICATING MEANS FOR PERIODICALLY INDEXING SAID DATE INDICATING MEANS TO THE NEXT DATE, MEANS NORMALLY LOCKING SAID INDEXING MEANS AGAINST MOVEMENT WHEREBY ENERGY IS STORED IN SAID SPRING, AND MEANS OPERATED IN SYNCHRONISM WITH SAID POWER TRAIN FOR PERIODICALLY RELEASING SAID INDEXING MEANS WHEREBY SAID SPRING ACTS THROUGH SAID INDEXING MEANS TO ADVANCE SAID DATE INDICATING MEANS TO THE NEXT DATE.
Claim 2
Dependent Claim
108 words
A CALENDAR MECHANISM FOR TIMEPIECES COMPRISING DATE INDICATING MEANS, A SPRING, MEANS COUPLED TO ONE END OF SAID SPRING FOR CONTINUOUSLY WINDING SAID SPRING FROM THE POWER TRAIN OF SAID TIMEPIECE, INDEXING MEANS COUPLED TO THE OTHER END OF SAID SPRING AND NORMLLLY SPACED FROM SAID DATE INDICATING MEANS FOR PERIODICALLY INDEXING SAID DATE INDICATING MEANS TO THE NEXT DATE, MEANS NORMALLY LOCKING SAID INDEXING MEANS AGAINST MOVEMENT WHEREBY ENERGY IS STORED IN SAID SPRING, AND MEANS OPERATED IN SYNCHRONISM WITH SAID POWER TRAIN FOR PERIODICALLY RELEASING SAID INDEXING MEANS WHEREBY SAID SPRING ACTS THROUGH SAID INDEXING MEANS TO ADVANCE SAID DATE INDICATING MEANS TO THE NEXT DATE.
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) | 1971-02-05 | 1971-08-07 | 1972-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-05 | 1975-08-07 | 1976-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-05 | 1979-08-07 | 1980-02-06 | $7700.00 | Window Closed / Lapsed |