Patent ID: 7133328
Filing Date: 2006-11-07
Classification: G04B

Abstract:
1. Date system for a horological movement comprising a tens disc ( 2 ) connected to a star wheel ( 4 ) driven by a first drive device ( 12 ), and a units disc ( 1 ) driven by a second drive device ( 13 ), which system is characterized in that the said drive devices ( 12 , 13 ) are connected to a rocker ( 9 ) which works with cams ( 10 , 11 ) connected to a driving runner ( 5 ), the said cams having respective profiles ( 20 , 21 ) that keep the first drive device ( 12 ) disengaged from the star wheel ( 4 ) until the profile of one cam ( 10 ) and the profile of another cam ( 11 ) actuate the said rocker in order to engage and disengage the respective drive devices ( 12 , 13 ) in such a way as to move the display from the 31 st to the 1 st of the month without an error of one day between the date indicated and the actual date.