Patent ID: 7014356
Filing Date: 2006-03-21
Classification: G04F

Abstract:
1. A rattrapante mechanism for a chronograph having a clock movement for rotably driving a second chronograph hand and, in a discrete number of increments per revolution, a minute chronograph hand and a control apparatus for stopping the second and minute chronograph hands, said rattrapante mechanism being arranged for starting and stopping second and minute rattrapante indicators on the chronograph, said rattrapante mechanism comprising: a common trip element actuatable for starting and stopping the second and minute rattrapante indicators; a minute rattrapante wheel connected to a minute rattrapante shaft of the minute rattrapante indicator, said minute rattrapante wheel having a periphery and a plurality of evenly distributed ratchet recesses defined on said periphery, the number ratchet recesses in said plurality of ratchet recesses corresponding to the number of discrete increments of the minute chronograph hand per revolution; and a catch triggered by said common trip element for engaging and disengaging one of said plurality of ratchet recesses.