Angular speed regulating device for a wheel set in a timepiece movement including a magnetic escapement mechanism
US9483026B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2014 |
| Grant date | Nov 1, 2016 |
| Priority date | — |
| Expiry date | Dec 22, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04C5/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention concerns a device for regulating the relative angular speed between a magnetic structure and a resonator magnetically coupled to each other and forming an oscillator which defines a magnetic escapement. The magnetic structure includes at least one annular magnetic path at least partially formed of a magnetic material of which one physical parameter is correlated to the magnetic potential energy of the oscillator, the magnetic material being arranged along the annular path so that the physical parameter varies angularly in a periodic manner. The annular path includes, in each angular period, an area of accumulation of magnetic potential energy in the oscillator, radially adjacent to an impulse area. The magnetic material, in each accumulation area, is arranged so that the physical parameter of said magnetic material gradually increases angularly or gradually decreases angularly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.