EP 1286233 B1 20080123 - Calendar timepiece comprising an equation-of-time device
Title (en)
Calendar timepiece comprising an equation-of-time device
Title (de)
Kalenderuhr mit Äquationsvorrichtung
Title (fr)
Pièce d'horlogerie à quantième comprenant un dispositif d'équation du temps marchante
Publication
Application
Priority
EP 01202996 A 20010807
Abstract (en)
[origin: EP1286233A1] A transmission part which cooperates with a time marking equation cam (32) is a bridge piece (54) having a toothed sector (64) at one end and which is acted on by a reset spring which tends to push its other end (66) against the periphery of the cam (32). . The mechanism includes a time difference equation marking mechanism as well as month indicating mechanism. It has hour and minute hands which indicate civil time and a supplementary minute hand which indicates true time. The daily position of the true time minute hand with respect to the civil minute hand is determined by a the position of a time equation cam (32) rotated by a yearly revolution from the month indicating mechanism. The true time hand is driven by a differential gear (50). A transmission part cooperates with the cam (32) to transmit to the differential the pivoting movement from the cam.
IPC 8 full level
G04B 19/22 (2006.01); G04B 19/23 (2006.01)
CPC (source: EP)
G04B 19/23 (2013.01)
Designated contracting state (EPC)
AT CH DE FR GB LI
DOCDB simple family (publication)
EP 1286233 A1 20030226; EP 1286233 B1 20080123; AT E384980 T1 20080215; DE 60132582 D1 20080313; DE 60132582 T2 20090129
DOCDB simple family (application)
EP 01202996 A 20010807; AT 01202996 T 20010807; DE 60132582 T 20010807