(19)
(11) EP 1 895 370 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.01.2009 Bulletin 2009/04

(43) Date of publication A2:
05.03.2008 Bulletin 2008/10

(21) Application number: 07253359.9

(22) Date of filing: 24.08.2007
(51) International Patent Classification (IPC): 
G04B 27/00(2006.01)
G04B 13/02(2006.01)
 G04B 19/22(2006.01)
G04B 11/00(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK RS

(30) Priority: 29.08.2006 JP 2006232190

(71) Applicant: Seiko Instruments Inc.
Chiba-shi, Chiba (JP)

(72) Inventor:
  • Murazumi, Takuya, c/o Seiko Instruments Inc.
    Chiba-shi, Chiba (JP)

(74) Representative: Cloughley, Peter Andrew et al
Miller Sturt Kenyon 9 John Street
London WC1N 2ES
London WC1N 2ES (GB)

   


(54) Wheel attached with jumper for timepiece, wheel structure attached with slip mechanism of timepiece, time correcting structure and timepiece attached with time difference correction


(57) To provide a jumper attached wheel for a timepiece, a slip mechanism attached wheel structure, a time correcting structure, a time difference correction attached timepiece capable of stably applying a restraining force regardless of a rotational direction of a finger wheel. A jumper attached wheel (60) forming a slip mechanism attached wheel structure (3) of a timepiece correcting structure of a time difference correcting timepiece includes a circular plate-like main body portion (71) including a hole (73) comprising a center hole portion (74) to which a finger wheel (62) is loosely fitted and a middle hole portion (75) expanded between one side of the center hole portion and a vicinity of an outer peripheral edge portion (71A), a jumper portion (80) comprising an elastic arm portion (81) connected to a peripheral wall portion of the center hole portion at base ends (83A,83B) and extended from the base end to one side (74A) of the center hole portion and a jump restraining finger portion (82) engaged with the finger wheel at a portion of the arm portion facing the one side, and a wheel portion (72) at an outer periphery thereof. The jumper attached wheel (60) includes guidingmeans (79) for guiding the jump restraining finger portion (82) in diameter directions (D1,D2) of the finger wheel (62) when the elastic arm portion (81) is elastically deformed in accordance with rotation of the finger wheel (62).










Search report