Strike mechanism for a watch
US8514669B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2010 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | May 16, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B23/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The strike mechanism of a watch includes a gong secured by one end thereof to a gong-carrier integral with a plate, a hammer rotatably mounted on the plate for striking the gong at predetermined times, a damping counterspring for keeping the hammer at a distance from the gong in an idle mode, and a drive spring for driving the hammer. The drive spring includes one end secured to the plate and one end that is free to move. The spring is windable so that the free end of the drive spring drives the hammer against the gong in a strike mode to generate an acoustic sound. The strike mechanism further includes a stop member on the path of the hammer drive spring in the direction of the gong for increasing the rotational strike speed following contact of an intermediate part of the drive spring acting against the stop member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.