Patent ID: 6912180
Filing Date: 2005-06-28
Classification: G04B

Abstract:
1. A timepiece with a large-format calendar display and instantaneous jump comprising a time train, a day-of-the-month runner comprising a 31-toothed wheel, a unit wheel of 30 teeth plus one space corresponding to a tooth for driving a 10-toothed unit star and a four-toothed wheel for driving a four-toothed tens star, an annual cam secured to a 12-toothed wheel, and drive means connected to said time train for driving said day-of-the-month runner by one revolution per month and the annual cam by one revolution per year, wherein said day-of-the-month runner is secured to a correction member, said drive means comprising an instantaneous jump cam secured to a wheel connected to said time train to make one revolution per day, a driving yoke equipped with a retractable driving finger, elastic means pressing this driving yoke against the instantaneous jump cam, a correction yoke comprising a retractable drive finger engaged with said correction member, a feeler designed to detect the position of said annual cam and elastic means for connecting said yokes together, so as selectively to engage said retractable driving finger of the correction yoke with said correction member according to the position of said annual cam as detected by said feeler.