Thin movement for stepping motor watch
US4382695A · kind A · utility
3Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1981 |
| Grant date | May 10, 1983 |
| Priority date | — |
| Expiry date | Jun 19, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B29/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A thin movement for a stepping motor watch employs a single frame member a peripheral front frame portion surrounding and connected to a back frame portion and stepping motor stator, affixed to the frame member, pins fixed in the back frame portion and stepping motor stator, gear members including the stepping motor rotor and gear train driving the watch hands rotatably mounted on said pins, a dial for the timepiece supported on the front frame portion, the dial serving to control axial movement of the gear members on the pins. Only two layers of gear members are required in the space between the back frame portion and the dial.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.