Chronograph watch
US5113382A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 15, 1991 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | Apr 15, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04F7/0842
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A chronograph watch provided with a control arrangement for the three functions of start, stop and reset to zero. The purpose of the invention is to provide a more judicious distribution of the elements of the chronograph mechanism over the entire surface of the watch. This purpose is attained by means of a watch characterized in that it comprises a start and stop cam (48) and a reset-to-zero cam, both of these cams being constituted by superposed concentric rings arranged at the periphery of the watch movement, in that both of these cams (48, 49) exhibit respectively ratchet teeth (97) or notches (98a, 98b) on their outer periphery on which act two levers (100, 101) to drive the cams (48, 49) in rotation and teeth (96) or notches (99) on their inner periphery acting on the control levers for the gearing forming the chronograph mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.