Mechanism for opening and closing cartridge compartment cover of

Details Mechanism for opening and closing cartridge compartment cover of Mechanism for opening and closing cartridge compartment cover of

1994-12-23

1997-02-04

Blankenship, Howard B.

Photography

Camera detail

Detachable or removable film holder unit

396538, G03B 1726, G03B 1702

Patent

active

056003935

ABSTRACT:
A mechanism, provided in a camera with a cartridge compartment to which a film cartridge having a light-intercepting door is loaded, which opens the light-intercepting door only if a cover of the cartridge compartment is closed. The mechanism has a film detecting lever which detects if a film is fed out of the film cartridge or not; and a switching lever, for opening and closing the cover in association with an opening and closing movement of the light-intercepting door of the film cartridge, whose operation is controlled by a position of the film detecting lever. That is, if the film detecting lever detects that the film is fed out of the film cartridge, the film detecting lever prevents the switching lever from being unlocked from the compartment cover, while if the film detecting lever detects that the film is not fed out of the film cartridge, the film detecting lever allows the switching lever to be unlocked from the compartment cover.

REFERENCES:
patent: 4714335 (1987-12-01), Desormeaux
patent: 5200777 (1993-04-01), Zander
patent: 5231438 (1993-07-01), Smart
patent: 5305039 (1994-04-01), Dassero
patent: 5319407 (1994-06-01), DiRisio
patent: 5357303 (1994-10-01), Wirt
patent: 5359378 (1994-10-01), Zander et al.
patent: 5463435 (1995-10-01), Ezawa
patent: 5473401 (1995-12-01), Tsunefuji

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