Title:
季節変動を考慮した昼夜表示を備えた時計
Document Type and Number:
Japanese Patent JP6473798
Kind Code:
B2
Abstract:
A timepiece includes a timepiece movement, a calendar mechanism and a mechanism for indicating the sunrise and sunset that take account of seasonal variations. The calendar mechanism includes a date display and a month display. The sunrise and sunset indicating mechanism also includes an annual cam having a profile representative of the tilt of the sun with respect to the equatorial plane and arranged to be driven in rotation by the date wheel set via a third kinematic chain.
Inventors:
Beato Giroman
Dominique Reshaw
Dominique Reshaw
Application Number:
JP2017237457A
Publication Date:
February 20, 2019
Filing Date:
December 12, 2017
Export Citation:
Assignee:
The Swatch Group Research and Development Limited
International Classes:
G04B19/00; G04B19/22
Domestic Patent References:
| JP2015155904A | ||||
| JP2002311168A |
Attorney, Agent or Firm:
Shigeki Yamakawa
Masaki Yamakawa
Masaki Yamakawa