Film cassette with removable light trap

Details Film cassette with removable light trap Film cassette with removable light trap

1992-06-01

1993-11-02

Jillions, John M.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

354275, G03B 1726

Patent

active

052577511

ABSTRACT:
In a film cassette, a cartridge shell has respective sections that are asssembled together to define an internal film chamber and a film passageway leading out of the chamber. A light-trapping material is located in the passageway to prevent ambient light from entering the chamber. According to the invention, at least one of the shell sections has a frame device hingedly connected to the one section for folding against the one section to secure the light-trapping material in place and for unfolding to release the light-trapping material to permit it to be removed.

REFERENCES:
patent: 1164835 (1915-12-01), Mandel
patent: 1459914 (1923-06-01), Knorr
patent: 1694401 (1928-12-01), Slocum
patent: 2484248 (1949-10-01), Roehrl
patent: 3104846 (1963-09-01), Ringle
patent: 3408909 (1968-11-01), Kisselmann et al.
patent: 4034929 (1977-07-01), Ebner, Jr.
patent: 4420120 (1983-12-01), Raymond
patent: 5083720 (1992-01-01), Niedospial et al.

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