Horology: time measuring systems or devices – Power supply details
Patent
1979-09-20
1981-06-30
Jackmon, Edith S.
Horology: time measuring systems or devices
Power supply details
368291, 368309, G04C 1000, G04B 3700
Patent
active
042766320
ABSTRACT:
A hatch locking mechanism is disclosed for a battery compartment having a mouth opening in the rear side of a wristwatch. The mechanism includes an inner cover adapted to be received within the battery compartment mouth and a central support shaft extending outwardly therefrom. An outer cover is slidably mounted around the support shaft and adapted to overlie the inner cover and battery compartment mouth. A first resilient seal member is disposed between the outer periphery of the inner cover and battery compartment mouth, and a second resilient seal member is disposed between the covers adjacent the support shaft. A lever pivotally connected to the support shaft is operable to bias the covers together and the seal members into sealing engagement when moved to a locking position to secure the hatch locking mechanism to the wristwatch and close the mouth of the battery compartment. In the locked position, the lever is contiguously disposed along the outer cover to provide the hatch locking mechanism with an outer surface which is flush with and continuous to an outer surface of a rear cap of the wristwatch.
REFERENCES:
patent: 2845773 (1958-08-01), Sakalys
patent: 3608304 (1971-09-01), Schaad
Heiwado Boeki Kabushiki Kaisha
Jackmon Edith S.
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