Title:
ELECTRONIC CLOCK MOVEMENT COMPRISING AN ANALOG DISPLAY OF SEVERAL ITEMS OF INFORMATION
Document Type and Number:
WIPO Patent Application WO/2015/150086
Kind Code:
A3
Abstract:
The electronic clock movement comprises an analog display device with a date ring (6) and a stop watch hand (4) associated with a graduation (5) of a usual small counter. This ring and this hand are driven by one and the same electric motor (10) via a set of permanent gears, the stop watch hand being mounted on a wheel of this set of permanent gears which wheel is arranged between the driving pinion (14) and a runner comprising a date drive wheel (24). The date ring and the date drive wheel respectively comprise two tooth sets forming a permanent mesh with a relatively large amount of lash making it possible to define a determined angular dead zone for the date drive wheel because the date ring is positioned by a jumper. This angular dead zone is used to drive the stop watch hand independently of the date ring. The set of permanent gears is arranged in such a way that the torque for positioning the rotor gives rise, at the date drive wheel, to enough of a blocking torque to perform a shock-proof function.
Inventors:
LAGORGETTE PASCAL (CH)
ZANESCO VITTORIO (CH)
GRUENIG DANIEL (CH)
ZANESCO VITTORIO (CH)
GRUENIG DANIEL (CH)
Application Number:
PCT/EP2015/055763
Publication Date:
December 10, 2015
Filing Date:
March 19, 2015
Export Citation:
Assignee:
ETA SA MANUFACTURE HORLOGÈRE SUISSE (CH)
International Classes:
G04C17/00; G04B19/247
Foreign References:
| FR2453439A1 | 1980-10-31 | |||
| JPS541066A | 1979-01-06 | |||
| US6185158B1 | 2001-02-06 | |||
| EP0874293A2 | 1998-10-28 |
Attorney, Agent or Firm:
ICB INGÉNIEURS CONSEILS EN BREVETS SA (Neuchâtel, CH)
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