公开(公告)号：US11860579B2

公开(公告)日：2024-01-02

申请号：US17375420

申请日：2021-07-14

Applicant: The Swatch Group Research and Development Ltd

Inventor： Joël Allimann ,  Jean-Claude Martin ,  Simon Garcin

IPC: G04B37/11 ,  G04B37/00

CPC classification number: G04B37/113 ,  G04B37/0008 ,  G04B37/11

Abstract: A device is for fastening a back on a middle of a watch. The back includes a cover arranged to form a bearing surface with the middle and a body arranged to rest in the middle. The device includes a ring disposed between the back and the middle, the ring being arranged to ensure the water resistance and indexing of the back. The ring includes an upper part ensuring the water resistance and a median part including positioning to ensure precise placement of the back.