Camera apparatus

Details Camera apparatus Camera apparatus

1989-01-12

1990-02-20

Gellner, Michael L.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

354275, 242 711, G03B 700, G03B 1726

Patent

active

049030531

ABSTRACT:
In a photographic camera, apparatus is provided for determining when, in a film cassette, a reduced-width trailing end portion of the filmstrip has fallen off a film support which normally positions the filmstrip within range of a tooth for engaging the film leader prior to initial film advance from the cassette shell or following midroll film return to the shell. During a film loading sequence of the photographic camera, the determination that the film leader is positioned out of range of the tooth automatically prevents operation of the film transport or other means, whereby one is alerted not to use the filmstrip.

REFERENCES:
patent: 1685010 (1928-09-01), Thornton
patent: 3467341 (1969-09-01), Roman
patent: 4176927 (1979-12-01), Wagensonner
patent: 4395107 (1983-07-01), Luhrig et al.
patent: 4423943 (1984-01-01), Gold

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