Panoramic dental X-ray machine employing selectable mode film dr

Details Panoramic dental X-ray machine employing selectable mode film dr Panoramic dental X-ray machine employing selectable mode film dr

1979-06-18

1980-09-09

Church, Craig E.

Radiant energy

Fluent material containment, support or transfer means

With irradiating source or radiating fluent material

250468, G03B 4116

Patent

active

042219701

ABSTRACT:
Film drive mechanism for use with a panoramic X-ray machine which provides continuous and discontinuous radiographic images of dental arch areas of a shifting patient. The mechanism utilizes a linkage structure which carries a pair of shiftable cam followers which are separably engageable with cam members having working surfaces configured to advance or retard the speed of rotation of the linkage structure in accordance with mode of radiographing selected, i.e., continuous or discontinuous. A film drive shaft rotates in accordance with an output shaft connected to an output member of the cam-controlled rotating linkage structure which film drive shaft controls speed of rotation of a drum which has the X-ray film wrapped therearound.

REFERENCES:
patent: 4034225 (1977-07-01), Hudson
patent: 4172977 (1979-10-01), Ciavattoni

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