Counting mechanism for timepiece
US4004411A · kind A · utility
1Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 25, 1976 |
| Grant date | Jan 25, 1977 |
| Priority date | — |
| Expiry date | Mar 25, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/1502
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A counting mechanism for timepiece having a bidirectional step by step motor, in which the rotor of the said motor cooperates directly with a counting wheel in such a way as to drive it only in one direction, this counting wheel being submitted to the action of a magnet which determines, at each step, its position while cooperating successively with each tooth of its toothing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.