Abstract: At least some of the uniformly distributed teeth of one of the antibacklash partner toothed wheel units, of this backlash-compensating gear train for a horological mechanism, have elastic parts (DR) that are flexible in the direction of the respective thicknesses of the teeth. Some of the teeth are capable of temporarily transmitting a torque considerably greater than the normal drive torque. Two adjacent teeth (D1, D2) capable of temporarily transmitting a torque considerably greater than the normal drive torque each comprise one flank (D1a, D2a) integral with a more rigid part (D12), and one flank (D1b, D2b) integral with a more flexible part (D1R, D2R), the two more rigid parts (D12) of the two teeth (D1, D2) being adjacent.

Abstract: This micromechanical part is intended to be fastened to a spindle and has at least one opening (10, 20, 30) whose edges comprise an alternating arrangement of rigid areas (11) and elastic areas (12, 22, 32). It is possible for those ends (13) of the rigid areas (11) closest to the center C of the opening (10, 20, 30) to be connected by a first circle C1 having a diameter greater than the diameter of a second circle C2 connecting those ends (15, 25, 27) of the elastic areas (12, 22, 32) closest to the center of the opening. In this micromechanical part, each rigid area (11) is formed by a convex portion projecting into the opening (10, 20, 30).

Abstract: At least some of the uniformly distributed teeth of one of the antibacklash partner toothed wheel units, of this backlash-compensating gear train for a horological mechanism, have elastic parts (DR) that are flexible in the direction of the respective thicknesses of the teeth. Some of the teeth are capable of temporarily transmitting a torque considerably greater than the normal drive torque. Two adjacent teeth (D1, D2) capable of temporarily transmitting a torque considerably greater than the normal drive torque each comprise one flank (D1a, D2a) integral with a more rigid part (D12), and one flank (D1b, D2b) integral with a more flexible part (D1R, D2R), the two more rigid parts (D12) of the two teeth (D1, D2) being adjacent.

Abstract: This micromechanical part is intended to be fastened to a spindle and has at least one opening (10, 20, 30) whose edges comprise an alternating arrangement of rigid areas (11) and elastic areas (12, 22, 32). It is possible for those ends (13) of the rigid areas (11) closest to the center C of the opening (10, 20, 30) to be connected by a first circle C1 having a diameter greater than the diameter of a second circle C2 connecting those ends (15, 25, 27) of the elastic areas (12, 22, 32) closest to the center of the opening. In this micromechanical part, each rigid area (11) is formed by a convex portion projecting into the opening (10, 20, 30).