Operating mechanism for mechanical watch movement
US4112673A · kind A · utility
4Cited by
1References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1977 |
| Grant date | Sep 12, 1978 |
| Priority date | — |
| Expiry date | Mar 11, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B27/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A watch movement is disclosed which is capable of being equipped either with or without a calendar mechanism without the need for structural modification of the movement. The setting lever spring of the unit is formed by a linear arm of the guard plate and provided with a head having a front and rear edge each with two opposite ramps arranged to cooperate with a pin to fix the spring in a different position depending on whether or not the movement is to be equipped with a calendar mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.