Mechanical winding device for a watch
US9400488B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2015 |
| Grant date | Jul 26, 2016 |
| Priority date | — |
| Expiry date | Nov 11, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B11/028
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An automatic winding device for a spring of a watch movement including a weight fixed on a support via a bearing including a ring which drives, in only one direction of rotation called the winding direction, a transmission gear in order to wind the mainspring, this winding device wherein, on the one hand, the bearing is of the one-way type and blocks the rotation of the weight in the opposite direction to the winding direction, called the blocking direction and wherein, on the other hand, the device includes a means for decoupling the weight from said bearing in at least the blocking direction when the weight exerts on the bearing a torque higher than a desired value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.