X-ray or gamma ray systems or devices – Photographic detector support – Sheet film cassette
Patent
1987-11-25
1989-02-21
Church, Craig E.
X-ray or gamma ray systems or devices
Photographic detector support
Sheet film cassette
378185, 378187, 206459, G03B 4204
Patent
active
048072710
ABSTRACT:
A film sheet presence indicating mechanism is disclosed for use in a photographic cassette, such as an x-ray cassette having one end wall with a slot therein through which a film sheet is moveable therethrough between screens along an inlet path to a loaded position adjacent an opposite end wall. The x-ray cassette has front and rear cover walls joined to the end walls in which the rear cover wall has an inner side facing an inner surface of the front cover. The film sheet presence indicating mechanism comprises a housing secured to the inner side of the rear cover adjacent the opposite end wall to define a cavity. The mechanism further comprises a film sheet presence indicator member that is mounted within the housing cavity for slidable movement between a normal first position indicating the absence of a film sheet in the x-ray cassette, and a second position indicating that a film sheet is loaded in the cassette.
REFERENCES:
patent: 3703272 (1972-11-01), Lareau
patent: 3784835 (1974-01-01), Schmidt
patent: 4194625 (1980-03-01), Stievenart et al.
patent: 4248172 (1981-02-01), Krobel et al.
patent: 4334753 (1982-06-01), Harvey
patent: 4394772 (1983-07-01), Okamoto et al.
patent: 4653888 (1987-03-01), Komamura et al.
patent: 4744100 (1988-05-01), Bauer et al.
Carmichael Evan P.
Covington Roger G.
Muller Bruce R.
Niedospial John J.
Church Craig E.
Eastman Kodak Company
Freeman John C.
Smith James A.
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