EP 1379924 A1 20040114 - CALENDAR DATE MECHANISM
Title (en)
CALENDAR DATE MECHANISM
Title (de)
KALENDERMECHANISMUS
Title (fr)
MECANISME DE QUANTIEME
Publication
Application
Priority
- EP 02713987 A 20020417
- CH 0200212 W 20020417
- EP 01810382 A 20010418
Abstract (en)
[origin: EP1251412A1] The month indicator (22) is divided into equal sectors with a sector for 31 day months and two sectors for months less than 31 days. It has a wheel (48) which has as many teeth as the sector indicator (22). The wheel (48) is connected to the day of month wheel (18) by a third kinematic link (28,46) and to the day of month indicator by a second kinematic link (24,36,37,48). The date mechanism includes: (a) a date wheel (18) ,driven by the watch movement, which makes one revolution in 24 hours; a day of month indicator (20) fitted with thirty one teeth and controlled by the date wheel (18); a first kinematic link (30,38), temporarily connecting, at the moment of change to next day, the wheel (18) to the indicator (20), so as to ensure a one step advance of the latter; a month indicator (22), and; a second kinematic link 24,36,37,48) temporarily connecting, at the end of each month, the indicator (20) to the month indicator (22) to ensure a one step advance of the latter at the end of each month; in addition a third kinematic link (28,46), temporarily connects the wheel (18) to the indicator (22), at the end of 31 day months and after the second link has ensured a one step drive of the indicator (22), so as to drive at least a supplementary step for the indicator (22), and via the second link (24,36,37,48), the indicator (20).
IPC 1-7
IPC 8 full level
G04B 19/24 (2006.01); G04B 19/253 (2006.01)
CPC (source: EP)
G04B 19/2536 (2013.01)
Citation (search report)
See references of WO 02084413A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1251412 A1 20021023; EP 1379924 A1 20040114; WO 02084413 A1 20021024
DOCDB simple family (application)
EP 01810382 A 20010418; CH 0200212 W 20020417; EP 02713987 A 20020417