Patent ID: 7909503
Filing Date: 2011-03-22
Classification: G04B,Y10T

Abstract:
1. A portable timepiece, comprising: a case band including a timepiece movement; a pipe attached to the case band and having a male screw portion disposed on an outer side of the case band; and a crown connected to a hand setting stem for transmitting a rotational force to the timepiece movement, the crown being movable into and out of mesh with the male screw portion and being held so as not to be rotated by bringing the crown into mesh with the male screw portion, the crown having a head main body constituting a cylindrical shape of a crown head, and a crown guide that makes sliding contact with an inner peripheral face of the head main body throughout a major part of the range of movement of the crown in an axial direction to guide movement of the crown head in the axial direction, the crown head being arranged outside of the pipe for cooperatively moving the hand setting stem in a state in which the crown and the male screw portion are not in mesh with each other.