Escapement mechanism for a watch movement
US9152128B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2014 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Sep 16, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B15/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Escapement mechanism (3) for a watch movement including a pallet lever (7) with a fork (13) and a roller device (4) with an impulse-pin coupled to a balance (2). The fork includes an entry horn (19) and an exit horn (21), the impulse-pin including a first cam portion (12a, 12b) configured to engage the entry horn, and a second cam portion (14a, 14b) configured to engage the exit horn. The first cam portion includes a first cam surface (12a) configured to engage the entry horn on a first level (10a, 10b), and the second cam portion includes a second cam surface (14b) configured to engage the exit horn on a second level (10b, 13b), the first and second levels being staggered in a direction parallel to the axis of rotation (A) of the roller device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.