X-ray or gamma ray systems or devices – Photographic detector support – Sheet film cassette
Patent
1980-10-02
1986-12-16
Church, Craig E.
X-ray or gamma ray systems or devices
Photographic detector support
Sheet film cassette
2504821, G03B 4204
Patent
active
046302972
ABSTRACT:
The invention relates to a cassette comprising a base lid element hinged at its rear edge to an upper element of the cassette, and intensifying screens fixed on the inside to both said lid element and to said upper element of the cassette, for use with a radiographic film situated between said screens and in close contact with them. The film is caused to separate from a predetermined one of said upper and base screens during the opening of the cassette by providing said upper screen with a non-contact zone along one of its front and rear edges, and said base screen with a non-contact zone along the other of its front and rear edges.
REFERENCES:
patent: 2193021 (1940-03-01), Dietz
patent: 3296437 (1967-01-01), Meschan
Church Craig E.
Litman Mark A.
Minnesota Mining and Manufacturing Company
Sell Donald M.
Smith James A.
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