US4376991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic watch with analogic display
Assignee: Complications SA
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Filing: 1981-07-28
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Granted: 1983-03-15
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Expires: 2001-07-28
Abstract
Abstract This watch comprises a date crown or date disc (9) pivoted onto a plate (10) and completely independent of a driving gear train (1, 2, 3). A second micro-motor (14) drives this crown (9) in its angular displacements.
Inventors
- 👤 Valentin Piaget
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:35
CPC Classifications
G; G04; G04C; G04C3/00; G04C3/14; G04C3/146; G04C17/00; G04C17/005; G04C17/0058; G04C17/0066
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
90 words
In an electronic watch having an analogic hour and minute hand display and a date crown, comprising a first micro-motor controlled by a first control circuit driven by a time base and powered by a battery, and a gear train driven by said first micro-motor and driving the hands of the display of the watch; the improvement comprising a second micro-motor controlled by a second control circuit driven by said time base, said second micro-motor driving said date crown completely independently from the gear train driven by the first micro-motor.
Claim 2
Dependent Claim
90 words
In an electronic watch having an analogic hour and minute hand display and a date crown, comprising a first micro-motor controlled by a first control circuit driven by a time base and powered by a battery, and a gear train driven by said first micro-motor and driving the hands of the display of the watch; the improvement comprising a second micro-motor controlled by a second control circuit driven by said time base, said second micro-motor driving said date crown completely independently from the gear train driven by the first micro-motor.
Claim 3
Dependent Claim
24 words
Watch according to claim 1, in which the axis of the second micro-motor comprises a pinion meshing with a toothing of the date crown.
Claim 4
Dependent Claim
28 words
Watch according to claim 1 and at least one gear in mesh between toothing on the date crown and a pinion on a shaft of the second micro-motor.
References Cited (Backward Citations)
CH190208A
Cited
US3276198A
Cited
US3815351A
Cited
GB1590467A
Cited
US4261046A
Cited
GB2017356B
Cited
US4282592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-14 | 1986-09-13 | 1987-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-14 | 1990-09-13 | 1991-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-14 | 1994-09-13 | 1995-03-15 | $7700.00 | Window Closed / Lapsed |