Film cassette drive mechanism in dental radiographic apparatus f

Details Film cassette drive mechanism in dental radiographic apparatus f Film cassette drive mechanism in dental radiographic apparatus f

1980-02-14

1981-08-25

Smith, Alfred E.

Radiant energy

Fluent material containment, support or transfer means

With irradiating source or radiating fluent material

A61B 614

Patent

active

042861616

ABSTRACT:
The disclosure relates to a film cassette drive mechanism in a dental radiographic apparatus for photographing the entire jaws which apparatus is used in tomography. The drive mechanism is of such construction that a film cassette disposed at one end of a rotary arm of the apparatus in an opposed relation with respect to an X-ray source disposed at the other end thereof is moved to feed a film necessary for tomography by driving a variable speed motor inside the cassette holder in synchronism with the speed of travel of the X-ray source responsive to the rotation of the rotary arm.

REFERENCES:
patent: 4039837 (1977-08-01), Ohta et al.
patent: 4247779 (1981-01-01), Ciavattoni et al.

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