Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
WHEEL TRAIN MECHANISM OF CLOCK
Document Type and Number:
WIPO Patent Application WO/2017/221522
Kind Code:
A1
Abstract:
This wheel train mechanism of a clock is configured from an easily manufacturable gear which has teeth of an outline having an involute curve, and a pinion which meshes with said gear. In order to suppress transmitted torque fluctuations, the wheel train mechanism (1) of the clock is provided with a gear (10) which has teeth (11) of a tooth shape with an outline having an involute curve, and a pinion having teeth (21) which mesh with the teeth (11) of the gear (10) to receive torque. In at least part of the first half of the meshing period, during which the gear (10) and the pinion (20) mesh, the torque transmitted from the gear (10) to the pinion (20) is approximately constant.

Inventors:
FUKUDA, Tadahiro (1-12, Tanashicho 6-chome, Nishitokyo-sh, Tokyo 11, 〒1888511, JP)
FUKAYA, Shinpei (1-12, Tanashicho 6-chome, Nishitokyo-sh, Tokyo 11, 〒1888511, JP)
Application Number:
JP2017/014822
Publication Date:
December 28, 2017
Filing Date:
April 11, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
CITIZEN WATCH CO., LTD. (1-12, Tanashicho 6-chome Nishitokyo-sh, Tokyo 11, 〒1888511, JP)
International Classes:
G04B13/02; F16H55/08
Foreign References:
JP2002227967A2002-08-14
JP2012102877A2012-05-31
Attorney, Agent or Firm:
CREO LAW & INTELLECTUAL PROPERTY (Tokyo Tatemono Yaesu Bldg. 2F, 4-16 Yaesu 1-chome, Chuo-k, Tokyo 28, 〒1030028, JP)
Download PDF: