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Patent Searching and Data


Title:
MECHANISM FOR REDUCING VARIABILITY IN STOPPING POSITION OF HAND
Document Type and Number:
WIPO Patent Application WO/2019/123821
Kind Code:
A1
Abstract:
In a mechanism for reducing variability in a stopping position of a hand, in order to prevent damage even if a torque acts in the opposite direction to a hand moving direction a mechanism (10) for reducing variability in a stopping position of a second hand (96) is provided with: a return gear (11) which is driven in conjunction with a wheel train mechanism (80), which is a timepiece display mechanism; a slip torque spring (12) (friction member) which is in contact with the return gear (11) to apply a frictional force to the drive of the return gear (11); and a return spring (13) (return spring member) which applies to the slip torque spring (12) a torque in the direction (the direction of the dashed arrow -R) opposite to the normal hand moving direction (the direction of the arrow R) of the return gear (11).

Inventors:
IMAMURA, Kazuya (1-12, Tanashicho 6-chome, Nishitokyo-sh, Tokyo 11, 〒1888511, JP)
MORITA, Shoichiro (1-12, Tanashicho 6-chome, Nishitokyo-sh, Tokyo 11, 〒1888511, JP)
Application Number:
JP2018/039410
Publication Date:
June 27, 2019
Filing Date:
October 24, 2018
Export Citation:
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Assignee:
CITIZEN WATCH CO., LTD. (1-12, Tanashicho 6-chome Nishitokyo-sh, Tokyo 11, 〒1888511, JP)
International Classes:
G04B35/00; G04B13/02; G04B19/02
Foreign References:
JP2646946B21997-08-27
JP2005003521A2005-01-06
JP2008014782A2008-01-24
JP2017138286A2017-08-10
JP2012021987A2012-02-02
Attorney, Agent or Firm:
CREO LAW & INTELLECTUAL PROPERTY (Tokyo Tatemono Yaesu Bldg. 2F, 4-16 Yaesu 1-chome, Chuo-k, Tokyo 28, 〒1030028, JP)
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