EP 2420899 B1 20181219 - Barrel for automatically winding timepiece
Title (en)
Barrel for automatically winding timepiece
Title (de)
Federhaus für Uhren mit automatischer Aufziehfunktion
Title (fr)
Barillet pour pièce d'horlogerie à remontage automatique
Publication
Application
Priority
EP 10173354 A 20100819
Abstract (en)
[origin: EP2420899A1] The barrel (1) has a circular drum (10) including an inner side wall (11) whose friction surfaces (12) rotate with blocking structures forming round and square active projecting corners (15a, 15b) or an active returning corner at edges of the surfaces, where the structures are formed of notches (13). A drive spring (20) forms a coil comprising an outer turn (21). The spring is frictionably coupled with the wall, and freely slides against the wall in case of overtension of the spring. The surfaces are limited at downstream side with respect to a turn sliding direction by the round corner. An independent claim is also included for a timepiece comprising an automatic winding movement.
IPC 8 full level
B04B 5/02 (2006.01); G04B 1/16 (2006.01); G04B 1/18 (2006.01)
CPC (source: EP US)
B04B 5/02 (2013.01 - US); G04B 1/16 (2013.01 - US); G04B 1/18 (2013.01 - US); G04B 1/185 (2013.01 - EP US)
Citation (examination)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
EP 2420899 A1 20120222; EP 2420899 B1 20181219; CN 102375398 A 20120314; CN 102375398 B 20140319; HK 1168428 A1 20121228; JP 2012042469 A 20120301; JP 2016075701 A 20160512; JP 5877668 B2 20160308; JP 6138899 B2 20170531; US 2012044789 A1 20120223; US 8573832 B2 20131105
DOCDB simple family (application)
EP 10173354 A 20100819; CN 201110237465 A 20110818; HK 12108933 A 20120912; JP 2011177395 A 20110815; JP 2015248238 A 20151221; US 201113212764 A 20110818