EP 2864841 B1 20190925 - DRIVING DEVICE FOR CLOCKWORK
Title (en)
DRIVING DEVICE FOR CLOCKWORK
Title (de)
ANSTEUERUNGSVORRICHTUNG FÜR UHRWERK
Title (fr)
ORGANE MOTEUR POUR MOUVEMENT D'HORLOGERIE
Publication
Application
Priority
- CH 8832012 A 20120622
- EP 2013062408 W 20130614
Abstract (en)
[origin: WO2013189856A2] Drive member (1) for clock movement comprising: a barrel (2, 2') comprising a drum (6, 6') mounted on an arbor (3) so that it can rotate with the abrbor (3) about an axis (4) when the drive member (1) is wound up; a main spring (8, 11) wound inside the barrel (2) and able to be wound up around the arbor (3) when the drive member (1) is wound up, and a core (17, 17') coaxial with and pivoting on the arbor (3); the exterior end (9, 13) of the spring (8, 11) being coupled to the drum (6, 6') and the interior end (10, 12) of the spring (8, 11) being coupled to the core (17, 17'); the exterior end (9, 13) of the spring (8, 11) is coupled to the drum (6, 6') by a first clamp (18) that is pivot mounted in the drum (6, 6') so that when the spring (8, 11)is unwound, the first clamp (18) pivots in such a way as to hold the exterior tuen of the first spring (8, 11) against the drum (6, 6') and when the spring (8, 11) is wound up, the first clamp (18) pivots towards the centre of the barrel (2) to follow the exterior turn of the spring (8, 11). The bending stresses in the spring are reduced.
IPC 8 full level
G04B 1/18 (2006.01); G04B 1/12 (2006.01); G04B 1/14 (2006.01)
CPC (source: EP US)
G04B 1/12 (2013.01 - EP US); G04B 1/14 (2013.01 - EP US); G04B 1/18 (2013.01 - US); Y10T 29/49583 (2015.01 - EP US)
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 RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2013189856 A2 20131227; WO 2013189856 A3 20140522; CH 706641 A2 20131231; CN 104412174 A 20150311; EP 2864841 A2 20150429; EP 2864841 B1 20190925; HK 1204683 A1 20151127; JP 2015520388 A 20150716; JP 6042534 B2 20161214; US 2015338826 A1 20151126; US 9285771 B2 20160315
DOCDB simple family (application)
EP 2013062408 W 20130614; CH 8832012 A 20120622; CN 201380032855 A 20130614; EP 13728420 A 20130614; HK 15105265 A 20150603; JP 2015517700 A 20130614; US 201314409644 A 20130614