Patent ID: 7643379
Filing Date: 2010-01-05
Classification: G04B

Abstract:
1. An instantaneous display mechanism for a timepiece, including: a display member fitted with a toothing mounted so as to move in rotation, and positioned using a jumper spring, a drive wheel set mounted so as to move in rotation, including a cam and a finger, wherein the finger is secured in rotation to the cam so as to provide a finger-cam assembly, wherein the finger cooperates with the toothing to drive the display member by steps, and a spring cooperating at least indirectly with the cam, wherein the cam is arranged to pivot the finger-cam assembly, via a slackening action of the spring, so as to drive the display member through one step, wherein the cam is further arranged for pivoting the finger-cam assembly, via the slackening action of the spring, so as to release the finger from the toothing after the finger-cam assembly has driven the display member through one step.