Locking mechanism for camera back

Details Locking mechanism for camera back Locking mechanism for camera back

1997-08-06

1999-08-31

Blankenship, Howard B.

Photography

Camera detail

Body structure or housing

G03B 1702

Patent

active

059465182

ABSTRACT:
A locking mechanism for the film-box cover of a camera is provided. Basically, the driven gear of the film receptacle of the camera interacts with a connecting catch which is rotatably mounted on a position binder: after the film is loaded into the receptacle and rolled out, the connecting catch will rotate an appropriate distance to prevent the opening/closing motion of the camera's film-box cover. This ensures that the box cover will not be accidentally opened, thus effectively preventing the exposure of the film which has already been used. Furthermore, when rewinding the film manually or by an automatic method after the roll of film has been used up for photography, the connecting catch will return to its original position to allow the film-box cover to regain its function for removal or reloading of the film.

REFERENCES:
patent: 3096699 (1963-07-01), Harvey et al.
patent: 4887114 (1989-12-01), Yamamoto et al.
patent: 5565951 (1996-10-01), Tokui

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