Calendar mechanism for chronograph watch
US5282179A · kind A · utility
71Cited by
10References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1992 |
| Grant date | Jan 25, 1994 |
| Priority date | — |
| Expiry date | Feb 21, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04F7/0885
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This chronograph-watch includes, superposed over one another and in the following order, a motor module (19), a chronograph module (27) and a dial (12). The motor module comprises a first date ring (17). The chronograph module includes a second date ring (28) located immediately under the dial and bearing indications (14) concerning the date which appear through an opening (13). The second ring (28) is controlled by the first ring (17), through a drive chain (32, 33, 34, 36) assembled in the chronograph module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.