Safety valve for watches
US10901370B2 · kind B2 · utility
1Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2018 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Feb 12, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B37/106
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A safety valve for a watch including a head that is movably mounted on a tube and able to move between an open position and a closed position, the tube including in its internal volume a first spring and wherein the tube is provided on an external face with a cam surface allowing a manual movement and an automatic movement of the head into its open position, after the first spring, the tube includes a second spring having a higher stiffness than that of the first spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.