Title:
CHRONOGRAPH TIMEPIECE
Document Type and Number:
WIPO Patent Application WO/2007/099718
Kind Code:
A1
Abstract:
A chronograph timepiece where elapsed time display sections can accurately
return to zero and the number of parts is reduced to simplify the structure. The
chronograph timepiece (1) has an hour CG wheel (25), a second CG wheel (40), and
a minute CG wheel (60) that are separated from each other in the planer direction,
and also has a hand return lever (160) for mechanically returning the hour CG wheel
(25), the second CG wheel (40), and the minute CG wheel (60) to zero approximately
at the same time. The hand return lever (160) has a hand return lever body (161)
and a minute hand return lever (170). The hand return lever body (161) has an hour
CG wheel operation section (164) and a second CG wheel operation section (165)
that return the hour CG wheel (25) and the second CG wheel (40) to zero. The minute
hand return lever (170) has a minute CG wheel operation section (172) for returning
the minute CG wheel (60) to zero. The position of the minute wheel operation section
(172) relative to both the hour CG wheel operating part (164) and the second CG
wheel operating part (165) is adjusted by an adjustment shaft (167) of the minute
hand return lever (170).
Inventors:
HIRAYA EIICHI (JP)
AGESAWA KAZUNARI (JP)
AGESAWA KAZUNARI (JP)
Application Number:
PCT/JP2007/000164
Publication Date:
September 07, 2007
Filing Date:
March 02, 2007
Export Citation:
Assignee:
SEIKO EPSON CORP (JP)
International Classes:
G04F7/08
Foreign References:
| JPH09178868A | 1997-07-11 | |||
| JP2004264036A | 2004-09-24 | |||
| JP2001208872A | 2001-08-03 | |||
| JP3011371U | 1995-05-23 | |||
| JPH11187218A | 1999-07-09 | |||
| JPS51114162A | 1976-10-07 | |||
| JP2002202387A | 2002-07-19 |
Other References:
See also references of EP 1993006A4
None
None
Attorney, Agent or Firm:
KAMIYANAGI, Masataka et al. (SEIKO EPSON CORPORATION 80 Harashinden, Hirook, Shiojiri-shi Nagano 85, JP)
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