Geometrical instruments
Patent
1978-12-05
1980-07-29
Hix, L. T.
Geometrical instruments
339152, 354288, G03B 1702, H01R 3306
Patent
active
042148308
ABSTRACT:
A still camera is provided with a battery compartment and with a film chamber, both of which are open at and are spaced lengthwise of, the rear side of the camera housing. A first cover is hinged to the camera housing so that it can pivot to a first position closing the chamber. A second cover is slidably mounted on the housing and movable to a second position in which it closes the battery compartment; when in this second position it engages the first cover and arrests it against movement out of the first position thereof. The inwardly facing side of the slidable second cover carries a sheetmetal contact having contact ribs which engage batteries in the compartment and complete a battery circuit only when the second cover is in its second (closure) position, but which interrupt the battery circuit when the second cover moves to its open position.
REFERENCES:
patent: 988191 (1911-03-01), Heidtmann
patent: 2099122 (1937-11-01), Kreisler
patent: 2585191 (1952-02-01), Tresise et al.
patent: 3629793 (1971-12-01), Ettischer et al.
patent: 3732795 (1973-05-01), Fukuda et al.
Kodak Research Disclosure, 5/75, p. 4.
AGFA-Gevaert A.G.
Hix L. T,.
Striker Michael J.
Wade Shelley
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