Horology: time measuring systems or devices – Crown or stem details
Reexamination Certificate
2006-02-23
2008-03-25
Luebke, Renee (Department: 2833)
Horology: time measuring systems or devices
Crown or stem details
C368S288000
Reexamination Certificate
active
07347620
ABSTRACT:
A watch has a crown threadedly locked to a stem pipe mounted to a barrel. The barrel has a pipe installation hole and a threaded hole that extends perpendicular to and in communication with the pipe installation hole. The stem pipe has an insertion portion and a barrel outside protruding portion. The insertion portion is inserted in the pipe installation hole such that the insertion portion can be withdrawn from outside the barrel. The barrel outside protruding portion is disposed outside the barrel and has an external thread to which the crown is removably threaded. An engaging recessed portion is formed in the outer surface of the insertion portion. An annular waterproof packing is sandwiched between the pipe installation hole and the insertion portion. A mounting screw is threaded into the threaded hole so as to be removable back and forth. A front-end portion of the mounting screw is inserted in the engaging recessed portion to hold the stem pipe to the barrel.
REFERENCES:
patent: 3130539 (1964-04-01), Davis
patent: 5663934 (1997-09-01), Wenger et al.
patent: 7111977 (2006-09-01), Hiranuma et al.
patent: 2004/0071049 (2004-04-01), Hiranuma et al.
patent: 5-119162 (1993-05-01), None
Hiranuma Haruki
Omori Nobukazu
Adams & Wilks
Luebke Renee
Seiko Instruments Inc.
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