Timepiece mechanism provided with a magnetic gear
US12353169B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2022 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Oct 16, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K49/102
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A mechanism (1) including a magnetic gear (2) including a first wheel (6B) and a second wheel (6C) provided with a first magnetic toothing (10) and a second magnetic toothing (12) respectively. The first and second magnetic toothings are respectively formed by first and second teeth made of a soft ferromagnetic material; and the magnetic gear (2) further includes a third wheel (6A) arranged between the first and second wheels (6B, 6C) and provided with a third magnetic toothing (8) formed by permanent magnetic poles, in particular by bipolar magnets. In general, the first wheel is a drive wheel, whereas the second wheel is driven into order to carry out a function or transmit a torque. The third intermediate wheel is preferably mounted such that it can rotate freely.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.