Cassette

Details Cassette Cassette

1976-02-02

1977-03-22

Smith, Alfred E.

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

250481, G03D 1308, G03C 300

Patent

active

040138909

ABSTRACT:
A cassette having a rectangular body made from plastic material including a marginal frame bounding a pair of film compartments separated by a radiation barrier and opening outwardly through opposite faces thereof. A pair of covers also made from plastic material and hingedly connected to opposite ends of the frame provide closures for the two film compartments. Each cover has a peripheral bead which is received within an associated groove in the frame when the cover is in a closed position. A U-shaped strip of magnetic material is sealed within each bead and cooperates with an associated U-shaped strip of magnetized material sealed within the body to releasably retain the cover in its closed position. The bead and groove further cooperate to comprise a light barrier for an associated film compartment.

REFERENCES:
patent: 2530321 (1950-11-01), Armstrong
patent: 2590891 (1952-04-01), Reuter
patent: 3591804 (1971-07-01), Mimasian
patent: 3704369 (1972-11-01), Paidosh

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