发明授权
- 专利标题: Perpetual calendar watch having two motors
- 专利标题(中): 万年历腕表有两台电机
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申请号: US46349申请日: 1987-05-06
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公开(公告)号: US4733384A公开(公告)日: 1988-03-22
- 发明人: Pierre-Andre Meister , Pierre Schmidli , Bruno Erni , Bertrand Soltermann
- 申请人: Pierre-Andre Meister , Pierre Schmidli , Bruno Erni , Bertrand Soltermann
- 申请人地址: CHX Grenchen
- 专利权人: ETA S.A. Fabriques d'Ebauches
- 当前专利权人: ETA S.A. Fabriques d'Ebauches
- 当前专利权人地址: CHX Grenchen
- 优先权: CHX02109/86 19860526
- 主分类号: G04C3/00
- IPC分类号: G04C3/00 ; G04C3/14 ; G04C17/00 ; G04B19/24
摘要:
This invention is concerned with an analogue calendar watch able to display the hour, the day of the month perpetually, and whenever required, the number of the month via the day of the month display. The watch includes a first motor driving the time display in response to a time base signal, a perpetual calendar circuit including a day counter, a month counter and a year counter and receiving a daily signal supplied by a contact, a control circuit connected to the calendar circuit, and a second motor driving the day of the month display in response to a signal from the control circuit. The display of the number of the month is achieved with a reading circuit that receives from the calendar circuit signals representative of the contents of the day and month counters. The reading circuit issues to the second motor, in response to a month call signal, a control signal to change the day of the month being displayed to the number of the month, and a further control signal to move the day of the month display back to its original position.
公开/授权文献
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