公开(公告)号：US20240302794A1

公开(公告)日：2024-09-12

申请号：US18426573

申请日：2024-01-30

Applicant: The Swatch Group Research and Development Ltd

Inventor： Paulo BRAVO ,  Andres Cabezas Jurin

IPC: G04B17/06 ,  G04B17/24

CPC classification number: G04B17/063 ,  G04B17/24

Abstract: A device (6) for autonomous adjustment of the active length of a spiral (5), for oscillators (4, 5) of the balance-spiral type, comprising a cock (12) mounted on a plate (13) of a horological movement (2) and in which a balance shaft pivots, the spiral (5) including an inner end secured to the balance shaft and an outer end secured to a balance spring stud (8) fastened to a balance spring stud holder (10), the balance spring stud holder (10) being pivotably mounted on the cock (12) concentrically to the balance shaft, and means for modifying the active length of the spiral (5).

公开(公告)号：US20200110363A1

公开(公告)日：2020-04-09

申请号：US16707796

申请日：2019-12-09

Applicant: The Swatch Group Research and Development LTd

Inventor： Jean-Luc BAZIN ,  Paulo BRAVO

IPC: G04B19/02 ,  G04B17/06 ,  G04B17/28 ,  G04C3/08

Abstract: A timepiece movement is provided, including a first regulating member and a first escapement associated therewith; a first train connecting the first escapement to a first energy source; a second regulating member and a second escapement associated therewith; a second train connecting the second escapement to a second energy source; a display of a current time; at least one differential gear including a first input wheel meshing with the first train and a second input wheel meshing with the second train, the at least one differential gear driving the display, where the second regulating member consumes less energy than the first regulating member.