Unlock instant, AI-driven research and patent intelligence for your innovation.

Calendar mechanism for timepiece movement

A technology of annual calendar and drive wheel, which is applied to clocks, mechanically driven clocks, and time indicating mechanical devices, etc., and can solve problems such as unusable

Active Publication Date: 2007-08-15
OMEGA SA
View PDF1 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this rapid correction mechanism cannot be used in the annual calendar mechanism disclosed in the Piguet patent
[0006] Finally, the Piguet mechanism cannot be used with an instant calendar mechanism

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Calendar mechanism for timepiece movement
  • Calendar mechanism for timepiece movement
  • Calendar mechanism for timepiece movement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The invention starts with the usual inventive idea consisting of providing an annual calendar mechanism in which the kinematic chain is located between the date disc and the month star wheel except when the mechanism needs to change from the last day of the month to the first day of the month During this period, it is always interrupted, which allows for a more rapid correction of the date indication and the month indication in an independent manner, for example at the end of February or when the clock has stopped for a long time. Furthermore, the annual calendar mechanism according to the invention includes an instant release system, without external force, which allows the sudden transition of the day and month indications from the end of one month to the beginning of the next, so that the transition from one month to the next is almost perceptible to the user Never happens, and the clock always gives the correct indication.

[0031] Fig. 1 is a plan view of a timepie...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention concerns an annual calendar mechanism for a timepiece including a date disc provided with a first inner toothing including thirty one teeth, a date drive wheel set in order to control the date display, said date disc including a second toothing, a correction drive wheel set able to cooperate with the second toothing to drive the date disc through an additional step at the end of the months of less than thirty one days, and a month star wheel arranged to be actuated at the end of each month and to complete one revolution per year, characterized in that in includes a month drive wheel set provided for driving the month star wheel at the end of each month, said drive wheel set being connected, via a gear train, to the date drive wheel set and to the additional correction drive wheel set, said wheel set occupying a first position in which it has no effect on the month star wheel, such that the kinematic chain between the date disc and the month star wheel is broken, and a second position that it occupies only at the moment when the change of month occurs and in which it actuates the month star wheel so as to move it one step forward, such that a correction device can act on the date disc without any effect on the month star wheel and vice versa.

Description

technical field [0001] The invention relates to an annual calendar mechanism for a watch movement, which is equipped with a month indicating mechanism. This type of annual calendar mechanism shows the exact day of the month with a single correction of one or two days each year to change the date at the end of February to the first of March. Background technique [0002] EP Patent No. 0987609 discloses a watch movement annual calendar mechanism in the name of Frédéric Piguet. According to this patent, the mechanism includes a date disc with 31 internal serrations on a first plane, on which are marked 31 numbers, each corresponding to a day of the month, displayed sequentially through holes in the face number. The drive wheel arrangement of the date disc comprises a drive wheel which is connected with the hour wheel of the timepiece movement via an intermediate wheel arrangement. This drive wheel device cooperates with the drive pin (driver finger) to complete one revolutio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G04B19/247
CPCG04B19/25G04B19/2538
Inventor A·布朗
Owner OMEGA SA