EP 0759584 B1 20010131 - Synchronisation device for an electronic timepiece
Title (en)
Synchronisation device for an electronic timepiece
Title (de)
Synchronisationsvorrichtung für eine elektronische Uhr
Title (fr)
Dispositif de synchronisation pour pièce d'horlogerie électronique
Publication
Application
Priority
CH 239395 A 19950822
Abstract (en)
[origin: EP0759584A1] The contact wheel, driven by the hour wheel of the movement, carries an axisymmetric central contact spring with four arms (4,6,8,10) touching conductive tracks (T1-T5) on a printed circuit board. The geometry of the arms ensures a periodic variation of the interconnections between the tracks. Three tracks (T1-T3) subtending equal angles of about 50 degrees at the centre are distributed uniformly around one half of the ring. Three pairs of tracks (T4,T5) individually subtending about 20 degrees are arranged around the other half. An electronic control signal processor memorises the contact configuration in the initial position, and detects any one-hour movement of the wheel.
IPC 1-7
IPC 8 full level
G04C 3/00 (2006.01); G04C 9/00 (2006.01); G04G 9/00 (2006.01); H01H 1/12 (2006.01); H01H 19/58 (2006.01)
CPC (source: EP US)
G04C 3/005 (2013.01 - EP US); G04G 9/0082 (2013.01 - EP US); H01H 19/585 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0759584 A1 19970226; EP 0759584 B1 20010131; CH 688950 B5 19981231; CH 688950G A3 19980630; CN 1095102 C 20021127; CN 1152139 A 19970618; DE 69611709 D1 20010308; DE 69611709 T2 20010816; HK 1012443 A1 19990730; JP H09119990 A 19970506; SG 64401 A1 19990427; TW 308655 B 19970621; US 5734626 A 19980331
DOCDB simple family (application)
EP 96113121 A 19960816; CH 239395 A 19950822; CN 96113263 A 19960821; DE 69611709 T 19960816; HK 98113404 A 19981215; JP 22125996 A 19960822; SG 1996010491 A 19960817; TW 85109825 A 19960813; US 70009596 A 19960820