Photo film cassette

Details Photo film cassette Photo film cassette

1995-11-22

1996-10-29

Gellner, Michael L.

Photography

Camera detail

Detachable or removable film holder unit

G03B 1726

Patent

active

055701523

ABSTRACT:
A photo film cassette has a spool (15). With photo film (14) wound, the spool is contained in a cassette shell (13, 71) in rotatable fashion. Rotation of the spool causes the photo film to advance to an outside of the cassette shell. A tongue (56, 72) is formed by cutting a slit (62) having a shape of a cornered line in a wall of the cassette shell (13, 71). The tongue, when folded, signals a developed status of the photo film. A groove (61a) is formed in the tongue, is extended across the tongue, and renders the tongue flexible. A support (58, 71a) is disposed on an inside of a wall of the cassette shell and across the slit, is contacted on an inside of the tongue, and prevents the tongue from being bent toward an inside of the cassette shell while the tongue is pressed with force below a predetermined range.

REFERENCES:
patent: 4395107 (1983-07-01), Luhrig et al.
patent: 4832275 (1989-05-01), Robertson
patent: 4834306 (1989-05-01), Robertson et al.
patent: 5032861 (1991-07-01), Pagano
patent: 5083155 (1992-01-01), Kataoka et al.
patent: 5213277 (1993-05-01), Takahashi et al.
patent: 5296887 (1994-03-01), Zander
patent: 5517268 (1996-05-01), Stephany

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