EP 3333640 B1 20220330 - RUNNING TIME EQUATION MECHANISM CONTROLLED BY A DIFFERENTIAL DEVICE

Title (en)

RUNNING TIME EQUATION MECHANISM CONTROLLED BY A DIFFERENTIAL DEVICE

Title (de)

MECHANISMUS DER WANDERNDEN ZEITGLEICHUNG, DER DURCH EINE DIFFERENZIALVORRICHTUNG GESTEUERT WIRD

Title (fr)

MECANISME D'EQUATION DU TEMPS MARCHANTE COMMANDE PAR UN DISPOSITIF DIFFERENTIEL

Publication

EP 3333640 B1 20220330 (FR)

Application

EP 17151406 A 20170113

Priority

EP 16202829 A 20161208

Abstract (en)

[origin: CN108181797A] The present invention relates to a running time equation mechanism comprising a pointer device, and the pointer device is used to indicate the apparent or actual solar time with the help of a civil time hour pointer (46) and an actual solar time minute hand (50) concentric with the civil time hour pointer (46). The pointer device does not have a civil time minute hand, and the civil time hour pointer (46) is rotated and driven by a clock movement and further drives the actual solar time minute hand (50). The running time equation mechanism 44 also comprises a time equation cam (54) having a contour determined by the difference value between the average solar time or the civil time and the apparent solar time or the actual solar time for each day in a year, the time equation cam (54) is rotated and driven by the clock movement with a rate of one circle every year, and the position of the actual solar time minute hand (50) is determined by the position of the time equation cam (54).

IPC 8 full level

G04B 19/23 (2006.01)

CPC (source: CN EP)

G04B 13/026 (2024.01 - CN); G04B 19/23 (2013.01 - CN EP)

Citation (examination)

EP 0509959 A1 19921021 - MONTRES BREGUET SA [CH]
EP 1792235 B1 20160316 - BLANCPAIN SA [CH]
EP 1483630 B1 20100505 - BRITISH MASTERS SA [CH]
EP 2820486 B1 20160217 - BLANCPAIN SA [CH]

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)

EP 3333639 A1 20180613; CN 108181797 A 20180619; CN 108181797 B 20201013; EP 3333640 A1 20180613; EP 3333640 B1 20220330; HK 1255965 A1 20190906

DOCDB simple family (application)

EP 16202829 A 20161208; CN 201711274187 A 20171206; EP 17151406 A 20170113; HK 18115039 A 20181123