Device for detecting and synchronising the position of a wheel of a timepiece mechanism
US9547280B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2014 |
| Grant date | Jan 17, 2017 |
| Priority date | — |
| Expiry date | Dec 24, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04C3/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for detecting and synchronizing a position of at least one first wheel of a timepiece mechanism for an electronic analog wristwatch, includes this first wheel extending in a plane. The detection and synchronization device includes at least one light source emitting a light beam and at least one light detection system. A first light-reflecting element projects from one of an upper or lower surfaces of the first wheel of the timepiece mechanism. The light source and the light detection system are arranged so that in a determined position of the first wheel of the timepiece mechanism, the light beam emitted by the light source is reflected by the first light-reflecting element in the direction of the light detection system. The detection and synchronization device is housed within a case of the wristwatch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.