Stem mechanism for a watch
US4126992A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1975 |
| Grant date | Nov 28, 1978 |
| Priority date | — |
| Expiry date | Dec 22, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04C3/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A winding stem mechanism including a winding shaft having a detent portion comprised of a pair of annular peripheral recesses with an annular step portion therebetween, and a pair of annular stops each adjacent a respective one of the recesses, and mounted for rotation and for being axially slidable. A resilient spring-like member normally engages a first of the recesses to define a normal position of the shaft and when the shaft travels in a first axial direction the spring-like member climbs the annular step portion to engage the second of the recesses. When the shaft travels in a second axial direction it pushes the annular stop adjacent the first recess to flex the spring-like member to permit the shaft to travel to a second operating position and flex in a direction effective to bias the shaft back from the second operating position to the normal position when the shaft is released.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.