Radiant energy – Fluent material containment – support or transfer means – With irradiating source or radiating fluent material
Patent
1979-04-02
1981-02-17
Willis, Davis L.
Radiant energy
Fluent material containment, support or transfer means
With irradiating source or radiating fluent material
A61B 614
Patent
active
042517303
ABSTRACT:
Panoramic dental X-ray machine possessing mechanical and electronic simplicity for providing both continuous and discontinuous radiographs of a dental arch area. The machine includes an excursion mechanism which causes a tubehead-camera assembly to uninterruptedly circularly orbit the patient's head at a constant speed. A drive mechanism is employed which controls the shifting or transport of the patient along an X-axis only, when either continuous or discontinuous images are desired. The kVp and milliamperes remain constant during the entire exposure of the patient to the X-rays as well as the rotational speed of the tubehead-camera assembly, and no attenuating members are required in the X-ray path for varying intensity of the X-ray beam.
REFERENCES:
patent: 4125774 (1978-11-01), Ciavattoni et al.
Ciavattoni Anthony
Cushman Robert H.
Flynn John J.
Schubert Thomas J.
Grigsby T. N.
Pennwalt Corporation
Willis Davis L.
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