Watch movement having a chronograph module adapted on a motor module
US5220541A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 1992 |
| Grant date | Jun 15, 1993 |
| Priority date | — |
| Expiry date | Oct 2, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04F7/0847
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A watch movement is a combination of a chronograph module and a motor module, the motor module comprising a third wheel, a first power take off composed of a toothed wheel fixed to the cannon-pinion and a second power take off composed of a pinion fixed to the seconds axle in the center, the chronograph module having a chronograph hand, a hand for the minute counter and a hand for the hour counter. This watch movement also has a third power take off composed of a wheel fixed to the third wheel, these three power take offs being accessible from the same side by the upper face of the motor module and the chronograph module being placed against said upper face of the motor module, and in that the hand of the chronograph, the hand of the minute counter and the hand of the hour counter are driven respectively and in independent manner by said second, third and first power take offs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.