Analog quartz timepiece
US4261048A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1979 |
| Grant date | Apr 7, 1981 |
| Priority date | — |
| Expiry date | Jun 8, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04C9/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An analog quartz timepiece having a manually operated external control member, and a correction signal generation circuit controlled by the external control member to generate low speed and high speed correction signals when the external control member is actuated for a short period of time and for a predetermined time interval, respectively, by which a stepping motor is driven at a selected speed to perform time correction. The timepiece also includes a click mechanism operative to shift an hours hand step-wise from any optional position without affecting a minutes hand and a seconds hand. The timepiece further includes a seconds zero-reset mechanism operative to reset the seconds hand to zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.