X-ray film cassette with flexible grid bonded to prestressed cov

Details X-ray film cassette with flexible grid bonded to prestressed cov X-ray film cassette with flexible grid bonded to prestressed cov

1989-11-27

1991-04-16

Westin, Edward P.

X-ray or gamma ray systems or devices

Photographic detector support

Sheet film cassette

378154, 378182, 378186, G03B 4204, G21K 100

Patent

active

050089200

ABSTRACT:
An x-ray film cassette is disclosed having a pair of covers at least one of which is resilient and prestressed to arch inwardly when the cassette is opened and to flatten from contact with the interior contents of the cassette when the cassette is pressed closed. A flexible x-ray grid is bonded to the interior of the cover to arch and flatten congruently with the cover. The grid is flexible enough to arch and flatten congruently with the resilient cover which protects the structural integrity of the grid by limiting flexing of the grid to predetermined limits defined by the degree of prestress of the cover.

REFERENCES:
patent: 2193021 (1940-03-01), Dietz
patent: 3504180 (1970-03-01), Tone
patent: 3511990 (1970-05-01), Hauss
patent: 3919559 (1975-11-01), Stevens
patent: 4032790 (1977-06-01), Nakamura
patent: 4081686 (1978-03-01), Nieuweboer
patent: 4380087 (1983-04-01), Tanaka
patent: 4538294 (1985-08-01), Tamura et al.
patent: 4706269 (1987-11-01), Reina et al.

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