EP 2210148 A1 20100728 - MECHANICAL WATCH HAVING CONSTANT SPRING FORCE
Title (en)
MECHANICAL WATCH HAVING CONSTANT SPRING FORCE
Title (de)
MECHANISCHE ARMBANDUHR MIT KONSTANTER FEDERKRAFT
Title (fr)
MONTRE-BRACELET MÉCANIQUE À FORCE DE RESSORT CONSTANTE
Publication
Application
Priority
- CH 2008000446 W 20081022
- CH 17372007 A 20071109
Abstract (en)
[origin: WO2009059441A1] A mechanical watch comprises a motive spring in a first spring barrel (10) and a mechanical and/or automatic winding device (141, 151, 152). A second spring barrel (20) and a differential (40) having three drive trains (121, 141, 135; 121, 114, 135') are provided, wherein the train (141, 151, 152) connected to the winding device acts on the first and second spring barrels (10 and 20) in the same direction.
IPC 8 full level
CPC (source: EP US)
Citation (search report)
See references of WO 2009059441A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
WO 2009059441 A1 20090514; CN 101855601 A 20101006; CN 101855601 B 20120704; EP 2210148 A1 20100728; JP 2011503555 A 20110127; JP 5412436 B2 20140212; US 2010254229 A1 20101007; US 8550701 B2 20131008
DOCDB simple family (application)
CH 2008000446 W 20081022; CN 200880115444 A 20081022; EP 08847321 A 20081022; JP 2010532398 A 20081022; US 74150608 A 20081022