G - Physics – 01 – P
Patent
G - Physics
01
P
G01P 1/00 (2006.01) B62J 11/00 (2006.01) G01P 1/02 (2006.01) G01P 1/04 (2006.01) G04B 37/14 (2006.01)
Patent
CA 2143238
A wrist watch (101) to which an engagement structure of the present invention is applied includes a recessed body (105) connected to a band (107), and a watch (103) having a projected body (141) formed on the rear side of a display portion (102), the projected body having an outer perimeter wall portion capable of fitting in an inner perimeter wall portion (117) of the recessed body (105). The inner perimeter wall portion has a wall surface formed by joining circles with their centers at a second reference axis (121) and with their diameters larger as the centers are shifted to the side of the watch portion. The outer perimeter wall portion has a wall surface formed by joining circles with their centers at a first reference axis (120) and with their diameters smaller as the centers are shifted to the side of the recessed body (105). A recessed portion provided at the outer perimeter wall portion is engaged with a projected portion provided at the inner perimeter wall portion, and the watch (103) and the recessed body (105) are disengaged by relatively rotating around the reference axis (120, 121).
Takeda Goro
Ueda Takashi
Cateye Co. Ltd.
R. William Wray & Associates
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