EP 2300881 A1 20110330 - DRIVING MECHANISM AND APPLICATION IN A RETROGRADE DISPLAY
Title (en)
DRIVING MECHANISM AND APPLICATION IN A RETROGRADE DISPLAY
Title (de)
ANTRIEBSMECHANISMUS UND SEINE ANWENDUNG IN EINEM RÜCKLÄUFIGEN DISPLAY
Title (fr)
MECANISME D'ENTRAINEMENT ET APPLICATION A UN AFFICHAGE DE TYPE RETROGRADE
Publication
Application
Priority
- EP 2009056608 W 20090529
- CH 10952008 A 20080715
Abstract (en)
[origin: WO2010006835A1] The invention relates to a mechanism for driving two circular display members (12, 13), the two display members (12, 13) being arranged coaxially and rotating in opposite directions at absolutely equal angular speeds. The present invention also relates to a timepiece using the above mechanism, wherein each of the display members (12, 13) includes N arms (12a, 12b, 12c, 13a, 13b, 13c). The timepiece further includes a dial (10) at least partially solid and arranged above the mechanism and the display members, and has an aperture (11) cut therein that defines an opening with a 180°/N angle having the centre thereof coinciding with the rotation axis of the display members (12, 13). The display members (12, 13) are arranged so that only one of the arms (12a, 12b, 12c, 13a, 13b, 13c) of the above two display members (12, 13) is always visible through said aperture (11). One of the arms (12a, 12b, 12c, 13a, 13b, 13c) of the display member (12, 13) moves across the entire aperture (11) in one movement direction until the same reaches the edge of the aperture (11), then one of the arms (12a, 12b, 12c, 13a, 13b, 13c) of the other display member (12, 13) moves across the entire aperture (11) in the other movement direction.
IPC 8 full level
G04B 19/08 (2006.01)
CPC (source: EP)
G04B 19/082 (2013.01)
Citation (search report)
See references of WO 2010006835A1
Designated contracting state (EPC)
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 SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
CH 699117 A1 20100115; CH 699117 B1 20130815; EP 2300881 A1 20110330; WO 2010006835 A1 20100121
DOCDB simple family (application)
CH 10952008 A 20080715; EP 09797442 A 20090529; EP 2009056608 W 20090529