Periapical film holder

Details Periapical film holder Periapical film holder

1998-01-22

2000-01-11

Porta, David P.

X-ray or gamma ray systems or devices

Photographic detector support

Dental

378205, G03B 4204, A61B 614

Patent

active

060128410

ABSTRACT:
A dental x-ray film holder and position device wherein the film holder and an associated biteblock can be rotated 180 degrees relative to a handle and associated x-ray beam alignment aid. Such rotation is facilitated by the use of a knurled knob on the end of an axle. The position of the film holder relative to the handle is determined and fixed by the use of indexing alignment pins on the film holder which fit into corresponding holes in the handle, providing positive positioning in one of two positions.

REFERENCES:
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patent: 3003062 (1961-10-01), Updegrave
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patent: 4295050 (1981-10-01), Linden
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patent: 4833699 (1989-05-01), Gardner, Jr.
patent: 4866750 (1989-09-01), Chavarria et al.
patent: 5044009 (1991-08-01), Klauser
patent: 5119410 (1992-06-01), Donato
patent: 5737388 (1998-04-01), Kossila

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