Patent ID: 8750080
Filing Date: 2014-06-10
Classification: G04B

Abstract:
1. An instantaneous driving mechanism for a timepiece movement, comprising: a mobile comprising a first wheel driven by a driving member of the timepiece movement and configured to drive rotation of a first cam of the mobile; and a lever mounted pivotally on at least one frame element of the timepiece movement, the lever being configured to cooperate with the mobile in order to be moved and to cooperate with a counter of the timepiece movement to increment the counter by instantaneous pulses, wherein the first cam is coaxial with the first wheel and has a periphery of varying radius, wherein the first cam is configured to cooperate with a nose carried by a first arm of the lever and to move the first arm progressively away from the center of the mobile when the first arm turns in a first rotation direction, before allowing the lever to fall, by virtue spring force, when the nose moves from a point on the periphery corresponding to the largest radius to a point on the periphery corresponding to the smallest radius, and wherein the mobile further comprises a safety body coaxial with the first wheel and configured to cooperate with the lever to move the first arm away from the center of the mobile when the first arm turns in a second rotation direction and to allow the nose to go from the point corresponding to the smallest radius to the point corresponding to the largest radius.