Title:
差動デバイスによって制御される均時差機構の実行
Document Type and Number:
Japanese Patent JP6405412
Kind Code:
B2
Abstract:
A running equation of time mechanism includes civil hour and minute hands to indicate civil time and a concentric true minute hand to indicate true time. The running equation of time mechanism includes an equation of time cam and a differential gear device, a first input of which is formed by a civil minute pipe on which a civil minute hand is pressed, and a second input of which is formed by the equation of time cam. The differential gear device includes a planetary reducer wheel set via which the civil minute pipe drives a civil hour pipe on which is pressed the civil hour hand, and a planetary multiplier wheel set via which the civil hour pipe drives a true minute pipe on which is pressed the true minute hand.
Inventors:
Sylvain Dovi
Alan Zauk
Alan Zauk
Application Number:
JP2017103329A
Publication Date:
October 17, 2018
Filing Date:
May 25, 2017
Export Citation:
Assignee:
Monterey Breguet SR
International Classes:
G04B19/22; G04B19/02
Domestic Patent References:
| JP2015510123A |
Foreign References:
| EP1286233A1 |
Attorney, Agent or Firm:
Shigeki Yamakawa
Masaki Yamakawa
Masaki Yamakawa