发明名称 TIMEPIECE WITH CALENDAR MECHANISM HAVING TWO DATE WHEELS
摘要 PROBLEM TO BE SOLVED: To provide a timepiece with a calendar mechanism which has first and second date wheels and improves the operability. SOLUTION: The timepiece with the calendar mechanism is provided with a second date wheel feed lever 370 moved based on a rotation of the first date wheel, and rotating the second date wheel. The first date wheel 512 includes first date wheel cogs 516 and calendar digit feed cogs. The calendar digit feed cogs comprise: first calendar digit feed cogs 518a; second calendar digit feed cogs 518b formed at an interval of (360*2/31)° in the first direction with reference to the first calendar digit feed cogs; third calendar feed cogs 518c formed at an interval of (360*9/31)° in the first direction with reference to the second calendar digit feed cogs; and fourth calendar digit feed cogs 518d formed at an interval of (360*10/31)° in the direction opposite the first direction with reference to the first calendar digit feed cogs. COPYRIGHT: (C)2010,JPO&INPIT
申请公布号 JP2010169582(A) 申请公布日期 2010.08.05
申请号 JP20090013338 申请日期 2009.01.23
申请人 SEIKO INSTRUMENTS INC 发明人 WATANABE MAMORU
分类号 G04B19/253 主分类号 G04B19/253
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