Calendar ring driving wheel for timepieces
US4060976A · kind A · utility
5Cited by
3References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 10, 1976 |
| Grant date | Dec 6, 1977 |
| Priority date | — |
| Expiry date | May 10, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B19/25366
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A timepiece having a toothed calendar ring and a driving wheel for advancing the calendar ring, wherein the driving wheel comprises a hub and a completely closed toothed rim having a driving tooth. The rim is connected to the hub by a resilient member so that the driving tooth makes way for a tooth of the calendar ring when the calendar ring is driven by means other than the driving wheel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.