Device for regulating the motion of a mechanical horological movement
US10001753B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2015 |
| Grant date | Jun 19, 2018 |
| Priority date | — |
| Expiry date | Sep 4, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K49/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device regulating motion of a mechanical horological movement includes: a frame; a resonator attached to the frame and including a first annular magnetic structure including N1 magnets arranged regularly in a circle and a resilient structure; a second annular magnetic structure including N2 magnets defining a central axis about which the structure rotates, N2 being different than N1. The resonator is configured so that a resonant mode in which the first magnetic structure is subject to curvilinear, or substantially circular, translation about the central axis may be excited by rotation of the second magnetic structure. The two magnetic structures define a magnetic cycloid gear such that the regulating device incorporates a reducer of frequency between the resonance frequency and the rotational frequency of the second magnetic structure which is rigidly connected to an escapement wheel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.