Coupling device between a source of mechanical energy and an electrical energy generator in a timepiece
US5532982A · kind A · utility
4Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1995 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Apr 27, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04C10/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A coupling device (1) between a source of mechanical energy (2) and a generator of electrical energy (3) comprises an arbor (4) driven by said source of mechanical energy, a cylindrical element (5) fixedly and coaxially mounted on the arbor, a tube (6) surmounting said cylindrical element arranged to rotate freely about said arbor and drive said generator. A helical spring (7) is friction-fitted on the cylindrical element and on the tube by its first turns (8) and last turns (9) respectively. A space (10) is provided between said tube and cylindrical element and the central turns (11) of the spring (7).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.