Patent ID: 7280437
Filing Date: 2007-10-09
Classification: G04B

Abstract:
1. A timepiece including a timepiece movement and a Chinese calendar display device, wherein the Chinese calendar display device includes: (a) a calendar mechanism including a first control lever actuated each day by a drive wheel of the timepiece movement; (b) a lunar month indicator associated with a month star-wheel having twelve teeth; (c) a lunar date indicator associated with a date wheel set including a date wheel with thirty teeth that is moved forward one step each day by a beak of the first control lever, the date wheel set further including a drive finger arranged to move the month star-wheel forward one step at the end of each revolution of the date wheel set; (d) a lunar month length selector, having at least two positions and cam surfaces acting as a support for the first control lever, to define alternately two different stop positions for the first control lever, respectively corresponding to a month of thirty days and to a month of twenty-nine days, wherein the first control lever is provided with a click cooperating with the date wheel set in order to move the date wheel set one extra step via movement of the first control lever at the end of a month of twenty nine days; (e) a first manual control member arranged for changing position of the lunar month length selector; (f) a bissextile month selector, having a normal position and a bissextile position and provided with a finger arranged for making the month star-wheel move back one step when the selector passes from the normal position to the bissextile position; and (g) a second manual control member arranged for making the bissextile month selector pass from the normal position to the bissextile position.