Patent ID: 9429914
Filing Date: 2016-08-30
CPC Classification: G04B

Claim Text:
1. A drive mechanism for driving a jumping element in a timepiece comprising a drive wheel, an indicator of a unit of time, a jumping element integral with said indicator and coaxial to said drive wheel to which said jumping element is coupled by a spring, a cam arranged to control a pallet-lever, said cam having a profile arranged to cause the pallet-lever to rock in an oscillating motion so as to release the jumping element once per unit of time, wherein the cam and the jumping element have distinct pivot arbors, said drive mechanism, further comprising an intermediate train kinematically connecting the drive wheel to the cam, and wherein the pallet-lever has four distinct arms, two of the four arms forming feelers arranged to cooperate with the cam and the other two arms forming escapement arms arranged to successively block and release the jumping element once per unit of time, alternately.