EP 1513028 B1 20120801 - Winding crown for mechanical timepiece
Title (en)
Winding crown for mechanical timepiece
Title (de)
Aufzugskrone für mechanische Uhr
Title (fr)
Couronne de remontage pour pièce d'horlogerie mécanique
Publication
Application
Priority
CH 14942003 A 20030901
Abstract (en)
[origin: EP1513028A2] The crown has a torque limitation device with a driving ring (2) and a transversal roller (30) for controlling torsion of a mainspring of a clock piece. The ring has multiple cavities (20) with springs (22) and associated friction units (24). Each friction unit is pushed, by its respective spring, against the roller parallel to an axis (4) of the crown. The cavities are regularly distributed around the axis of the crown. An independent claim is also included for a mechanical clock piece with a winding crown.
IPC 8 full level
G04B 3/04 (2006.01); G04B 3/06 (2006.01); G04B 37/10 (2006.01)
CPC (source: EP)
G04B 3/041 (2013.01); G04B 3/06 (2013.01); G04B 37/10 (2013.01)
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
EP 1513028 A2 20050309; EP 1513028 A3 20100519; EP 1513028 B1 20120801; CH 696823 A5 20071214; DE 04005384 T1 20050818; HK 1070699 A1 20050624
DOCDB simple family (application)
EP 04005384 A 20040306; CH 14942003 A 20030901; DE 04005384 T 20040306; HK 05103188 A 20050414