Engagement structure disengaged by relatively rotating projected

Details Engagement structure disengaged by relatively rotating projected Engagement structure disengaged by relatively rotating projected

1995-02-24

1998-06-02

Roskoski, Bernard

Horology: time measuring systems or devices

Combined with disparate device

368316, 368317, G04B 3700

Patent

active

057611572

ABSTRACT:
A wrist watch to which an engagement structure of the present invention is applied includes a recessed body connected to a band, and a watch having a projected body formed on the rear side of a display portion. The projected body has an outer perimeter wall portion capable of fitting in an inner perimeter wall portion of the recessed body. The inner perimeter wall portion has a wall surface formed by joining circles with their centers at a second reference axis 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 and with their diameters smaller as the centers are shifted to the side of the recessed body. 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 and the recessed body are disengaged by relative rotation around the reference axis.

REFERENCES:
patent: 2576476 (1951-11-01), Peter et al.
patent: 3241308 (1966-03-01), Forney
patent: 4656564 (1987-04-01), Felder
patent: 4742500 (1988-05-01), Luce
patent: 4756454 (1988-07-01), Villanueva et al.
patent: 4819217 (1989-04-01), Houlihan
patent: 4887249 (1989-12-01), Thinesen
patent: 5201431 (1993-04-01), Berger et al.
Partial English Translation of Official Action from the Taiwanese Patent Office.

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