Invention Grant
- Patent Title: Watch with calendar mechanism having two date indicators
- Patent Title (中): 观察日历机制有两个日期指标
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Application No.: US12657600Application Date: 2010-01-22
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Publication No.: US08264912B2Publication Date: 2012-09-11
- Inventor: Mamoru Watanabe
- Applicant: Mamoru Watanabe
- Applicant Address: JP
- Assignee: Seiko Instruments Inc.
- Current Assignee: Seiko Instruments Inc.
- Current Assignee Address: JP
- Agency: Adams & Wilks
- Priority: JP2009-013338 20090123
- Main IPC: G04B19/20
- IPC: G04B19/20

Abstract:
A watch with a calendar mechanism has a rotatable first date indicator for displaying a ones place of a date, a rotatable second date indicator for displaying a tens place of the date, and a second date indicator feeding lever for rotating the second date indicator. The first date indicator has calendar shift teeth and first date indicator tooth portions. The calendar shift teeth include a first calendar shift tooth, a second calendar shift tooth arranged relative to the first calendar shift tooth at a first interval, a third calendar shift tooth arranged relative to the second calendar shift tooth at a second interval greater than the first interval, and a fourth calendar shift tooth arranged relative to the first calendar shift tooth at a third interval greater than each of the first and second intervals. The second date indicator feeding lever has a spring portion and is mounted to undergo movement from a first position toward the second date indicator in accordance with rotation of the first date indicator and is restored to the first position by a spring force of the spring portion.
Public/Granted literature
- US20100188937A1 Watch with calendar mechanism having two date indicators Public/Granted day:2010-07-29
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