Lockable push button for portable apparatus such as a watch

Details Lockable push button for portable apparatus such as a watch Lockable push button for portable apparatus such as a watch

2008-06-17

2008-06-17

Bradley, P. Austin (Department: 2833)

Horology: time measuring systems or devices

Crown or stem details

C368S290000

Reexamination Certificate

active

07387434

ABSTRACT:
There is provided portable apparatus capable of maintaining a function of preventing accidental operation of a push button when the apparatus is carried on the wearer's body. The apparatus includes a watch enclosure body (apparatus enclosure body), a pipe, a push button, a biasing member, a locking member, and a whirl-stop. The pipe is fixed to the enclosure body by inserting it into a through hole in the enclosure body. A retainer tube of the pipe has a female thread formed thereon and is disposed outside the enclosure body. The push button has a shaft passed through the pipe, a detent for preventing the push button from being pulled out of the pipe, and a manipulator head disposed outside the enclosure body. The biasing member biases the push button outward with respect to the enclosure body. The locking member has an inner wall with a male thread and a stopper projection that comes into contact with and moves away from the head, and an outer wall that fits on the tube. The locking member is movably attached to the tube by engaging the threads with each other. The whirl-stop that provides rotational resistance on the locking member is sandwiched between the outer wall and the tube.

REFERENCES:
patent: 2309428 (1943-01-01), Aegler
patent: 3362154 (1968-01-01), Perret
patent: 4313187 (1982-01-01), Waki et al.
patent: 6872899 (2005-03-01), Oshio et al.

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