Pallet lever for the escapement mechanism of a watch movement
US9575465B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2015 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | May 26, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B15/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Pallet lever (2) for the escapement mechanism of a watch movement including a fork portion (4), a pallet-stone holder portion (7), pallet-stones (6) mounted on the pallet-stone holder portion, and a lever (8) interconnecting the pallet-stone holder portion to the fork portion. The fork portion includes a fork (12), guard pin (14) and a stud (16), the lever and the pallet-stone holder portion are integral and form a one-piece main body (3) of the pallet lever, and the fork is an added part secured to the main body by means of the stud driven into a securing hole (18) in the main body and a securing hole (20) in the fork. The stud is manufactured from a hard material, particularly a sapphire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.