Tourbillon for timepiece
US7794137B2 · kind B2 · utility
7Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2007 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Sep 25, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B17/285
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A tourbillon is disclosed which presents a carriage comprising an upper bridge 1, a lower bridge 2 and an escapement bridge 3 supporting a balance spring 4, an escapement wheel 5 and a pallet assembly 6, the lower bridge 2 presenting a circular periphery designed to fit into a groove on the outer edge of three pivoting rollers positioned between a plate and bridges of a corresponding timepiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.