发明名称 Electronic timepiece with calendar device
摘要 An electronic timepiece has a calendar advancement device resistant to external shock and capable of achieving date correction in a short time. A date dial advancement transducer (51) is activated in response to a date dial drive signal generated by a 24-hour switch. A date advancement mechanism (a date gear train) (52) employs a Geneva wheel for stabilizing the date dial (70). A bounding restraint lever is regulated using an eccentric cam or the like provided coaxially with the Geneva wheel.
申请公布号 US6477114(B1) 申请公布日期 2002.11.05
申请号 US19990380155 申请日期 1999.08.26
申请人 CITIZEN WATCH CO., LTD. 发明人 MUTOH TAKEO;KITAJIMA YASUO;HIGUCHI HARUHIKO;KOIKE HIROYUKI
分类号 G04C17/00;(IPC1-7):G04B19/24 主分类号 G04C17/00
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