Horology: time measuring systems or devices – Crown or stem details – Switch or detent
Patent
1991-03-25
1992-11-17
Roskoski, Bernard
Horology: time measuring systems or devices
Crown or stem details
Switch or detent
368321, G04B 2900
Patent
active
051649241
ABSTRACT:
A compact electronic apparatus comprises a casing of a wrist watch shape, a push button switch installed on the casing, waterproof packing being provided between the casing and the push button switch, a metal pipe mounted in the casing with its portion being extending out from the casing and including the push button switch therein, the metal pipe provided with a flange at its extending portion so as to form a recess, which recess is adapted to receive a mounting pipe of a release switch. The construction of the electronic apparatus allows a direct switching operation of the push button switch as well as a switching operation through the release switch. In either events, the casing of the present electronic apparatus is protected from water penetration with an extremely simple construct.
REFERENCES:
patent: 828815 (1906-08-01), Edwards
patent: 2982194 (1961-05-01), Hannafin
patent: 4089156 (1978-05-01), Kashio
patent: 4184320 (1980-01-01), Kashio
patent: 4407295 (1983-11-01), Steuer et al.
patent: 4629329 (1986-12-01), Komiyama
patent: 4652141 (1987-03-01), Arai
patent: 4794414 (1988-12-01), Kozina et al.
Casio Computer Co. Ltd.
Roskoski Bernard
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