Annual or perpetual calendar mechanism and timepiece comprising the same
US9690257B2 · kind B2 · utility
1Cited by
6References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 23, 2015 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Nov 23, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B19/2536
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In an annual or perpetual calendar mechanism, a lever bears a maneuvering device of a day-of-the-month wheel. A month wheel defines course beginning stops, each associated with a month and operational for controlling a course beginning position of the lever when the month wheel is in the angular position associated with this month. These course beginning stops are bottoms of slots alternating with the teeth of the month wheel. The month wheel has a peripheral edge which forms the profile of its teeth as well as the course beginning stops.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.