Horology: time measuring systems or devices – Cases – With crown or stem details
Reexamination Certificate
2011-03-22
2011-03-22
Miska, Vit W (Department: 2833)
Horology: time measuring systems or devices
Cases
With crown or stem details
C368S320000
Reexamination Certificate
active
07909503
ABSTRACT:
A portable timepiece has a timepiece movement disposed in a case band. A pipe extends through and is attached to the case band and has a male screw portion on a part of the pipe that extends outside the case band. A crown has a crown head and a crown shaft, and the crown head has a female screw portion threadedly engaged with the male screw portion and disengageable therefrom in response to rotation of the crown head in a loosening direction accompanied by axial movement of the crown head in a direction away from the case band. The crown shaft has one end portion that extends into the pipe and is connected to a hand setting stem of the timepiece movement and another end portion that extends outside the case band beyond the pipe and slidably contacts an inner peripheral surface of the crown head to support the crown head and guide the axial movement thereof. The crown shaft has a force receiving portion for receiving a rotational force to rotate the hand setting stem, and the crown head has a force transmitting portion that releasably engages with the force receiving portion during axial movement of the crown head away from the case band to enable a rotational force to be transmitted to the force receiving portion by rotating the crown head. The end portion of the crown shaft that slidably contacts the inner peripheral surface of the crown head constitutes the force receiving portion of the crown shaft.
REFERENCES:
patent: 2309428 (1943-01-01), Aegler
patent: 2482317 (1949-09-01), Borer
patent: 3453819 (1969-07-01), Simon
patent: 4089158 (1978-05-01), Wenger
patent: 4313187 (1982-01-01), Waki et al.
patent: 5383166 (1995-01-01), Gallay
patent: 2002/0167866 (2002-11-01), Oomori et al.
patent: 2005/0088920 (2005-04-01), Hiranuma et al.
patent: 2005/0094498 (2005-05-01), Koshoji et al.
patent: 2005127816 (2005-05-01), None
Adams & Wilks
Miska Vit W
Seiko Instruments Inc.
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