Hybrid timepiece oscillator
US10234822B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2017 |
| Grant date | Mar 19, 2019 |
| Priority date | — |
| Expiry date | Jun 7, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2370/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A timepiece oscillator includes a sprung balance assembly including a balance with a rim, which is returned by a balance spring and pivoted with respect to a structure, on a first side by a torsion wire, fixed by an anchoring element to the structure, and on a second side, opposite to the first side, by a contactless magnetic pivot. The balance includes a first pole embedded with the balance and the torsion wire, this first pole having a symmetry with respect to the axis of the sprung balance assembly, and cooperating with a second pole included in the structure, for the magnetic suspension of the first pole, and to exert on the distal end of the torsion wire, opposite to this anchoring element, a magnetic force for tensioning the torsion wire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.