公开(公告)号：US20250076814A1

公开(公告)日：2025-03-06

申请号：US18821696

申请日：2024-08-30

Applicant: ROLEX SA

Inventor： Daniel Moille ,  Ramis Schiegg

IPC: G04B19/253 ,  G04B27/02

Abstract: Timepiece driving device (100), in particular for an instantaneous jump calendar system, the device including; an input mobile (13); a main cam (11) having a main cam profile, and connected to the input mobile either (i) with angular backlash or (ii) via a unidirectional coupling; an auxiliary cam (12) connected to the input mobile, and having an auxiliary cam profile; a cam follower (21) adapted to cooperate with the main cam profile and/or with the auxiliary cam profile; and an energy accumulator (22) elastically biasing the cam follower toward the main cam profile and toward the auxiliary cam profile, the timepiece driving device (100) being arranged so that the cam follower (21) comes substantially into contact with the auxiliary cam profile immediately at the end of the driving of the main cam (11) by action of the energy accumulator (22) on the main cam (11) via the cam follower (21).