Watch movement comprising a retrograde display and a jump hour ring
US10928777B2 · kind B2 · utility
1Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2017 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | Mar 12, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B27/004
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A watch movement comprising a retrograde mobile, an hours ring bearing an asymmetric internal toothing and driven by the retrograde mobile in order to display the current hour in a jumping way, a correction mechanism allowing the retrograde mobile to be corrected in both directions, a drive member that can be actuated by said correction mechanism and engages with said asymmetric internal toothing so that corrections of the retrograde mobile in the clockwise direction are transmitted to the hours ring, whereas corrections in the counterclockwise direction are not transmitted to the hours ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.