Means for stepping X-ray receptor in direction opposite to posit

Details Means for stepping X-ray receptor in direction opposite to posit Means for stepping X-ray receptor in direction opposite to posit

1976-11-04

1978-06-13

Smith, Alfred E.

Radiant energy

Inspection of solids or liquids by charged particles

Analyte supports

250445R, A61B 602

Patent

active

040951103

ABSTRACT:
A bucky translated under an X-ray table in radiographic apparatus of the linear tomography type wherein precise positioning with respect to the X-ray tubestand is achieved by a combination of a ball screw drive attached to the bucky and a permanent magnet stepper motor coupled thereto which incrementally rotates one step with each input drive pulse applied thereto from a pulse generator operated in accordance with a control input applied from an electronic control system in response to the sensed position change of the tubestand.

REFERENCES:
patent: 3091691 (1963-05-01), Snow
patent: 3766387 (1973-10-01), Heffan et al.

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