Pushpiece mechanism for a timepiece
US4818830A · kind A · utility
5Cited by
6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 1, 1987 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Apr 1, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18992
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The pushpiece mechanism for a timepiece comprises pushpiece return means arranged so that the force applied to the pushpiece passes through a maximum at an intermediate position thereof between a rest position and the pushed-in position of the pushpiece. To this end the return means are provided with two bearing elements arranged to cooperate with one another and comprising respectively a beak and a heel coupled by an elastic member, such bearing elements and elastic member being formed as a single piece. The mechanism may be applied in particular to electronic timepieces including a chronograph function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.