Film holder for bite-wing radiographs

Details Film holder for bite-wing radiographs Film holder for bite-wing radiographs

1976-02-04

1977-11-08

Church, Craig E.

Radiant energy

Invisible radiation responsive nonelectric signalling

Photographic type

G03B 4116

Patent

active

040577325

ABSTRACT:
The present invention relates to a film holder for bite-wing X-ray films with a centering device for the X-ray cone comprising an indicator rod portion extending parallel to a central guide axis of the holder and provided for guiding the X-ray cone and an index projection indicating the horizontal medial axis of the X-ray film and its end indicating the central axis.
The film holder is preferably made of plastics material to be used once, providing maximum hygiene, whereas the indicator rod is provided with fracture means, the holder thus being adaptable for all types of X-ray cones.

REFERENCES:
patent: 2034049 (1936-03-01), Levy
patent: 2392109 (1946-01-01), Vlock
patent: 2553028 (1951-05-01), Wright
patent: 2777068 (1957-01-01), Bowser
patent: 3003062 (1961-10-01), Updegrave

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