Timepiece movement and timepiece
US10908556B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 21, 2018 |
| Grant date | Feb 2, 2021 |
| Priority date | — |
| Expiry date | Jul 31, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B27/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A timepiece movement includes: an hour wheel and pinion; a minute wheel and pinion; a winding stem; a time difference correction train; a date indicator; and a date change mechanism. The hour wheel and pinion includes an hour wheel that rotates with the minute wheel and pinion, an hour jumper, an hour jumper pinion, and an hour wheel body that turns with the hour wheel via the hour jumper and hour jumper pinion, and turns with the time difference correction train. The date change mechanism includes a date change wheel that turns with the hour wheel body, a date change lever, a date change cam that flexes the date change lever by rotating with the date change wheel, and turns in response to the flexed date change lever spring force, and a date change pawl that rotates with the date change cam, and advances the date indicator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.