Device intended to control the angular speed of a train in a timepiece movement and including a magnetic escapement
US9715217B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2014 |
| Grant date | Jul 25, 2017 |
| Priority date | — |
| Expiry date | Dec 22, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B17/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
There is provided a device for regulating the operation of a horological movement, including a magnetic escapement, which includes a resonator and a magnetic escapement mobile turning about an axis. The mobile includes at least one magnetic track with a plurality of magnets having an angular dimension that is greater than their radial dimension. The resonator includes at least one magnetic element for coupling to the magnetic track. The coupling element extends radially relative to the axis of rotation, and has a contour with a portion oriented substantially angularly when the resonator is in the rest position. When the mobile is driven in rotation, each magnet penetrates beneath the coupling element and gradually accumulates some potential magnetic energy. The magnet then exits from beneath the coupling element through the portion and the coupling element receives a pulse located around its rest position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.