Title:
機械式時計用の年間カレンダー
Document Type and Number:
Japanese Patent JP6609325
Kind Code:
B2
Abstract:
A date display device with an annual calendar function comprises the following elements: a drive wheel (8) which is coupled to a mechanical movement, a driving device which is driven by the drive wheel (8), a date wheel (4) which periodically interacts with the driving device and is driven by this and a month wheel (5) which is periodically interacts with the date wheel, as well as a month cam disc (6) which is connected to the month wheel. The driving device comprises a driver (8.1) and a rotation axis (8.3), wherein the driver moves on a path about the rotation axis (8.3) of the driving device and the rotation axis adopts at least two different positions relative to the date wheel (4), wherein in a first position, the driving device advances the date wheel by a single unit and in a second position by a plurality of units and wherein the adopted position depends on the number of days of the month concerned.
Inventors:
Mutru, Joachim
Application Number:
JP2017558430A
Publication Date:
November 20, 2019
Filing Date:
May 04, 2016
Export Citation:
Assignee:
BUCHERER AG
International Classes:
G04B19/253
Domestic Patent References:
| JP2013134130A |
Foreign References:
| CH697673B5 |
Attorney, Agent or Firm:
Fukami patent office