Telescopic column for X-ray apparatus

Details Telescopic column for X-ray apparatus Telescopic column for X-ray apparatus

1976-06-04

1977-08-09

Church, Craig E.

Radiant energy

Source supports

G03B 4116

Patent

active

040413209

ABSTRACT:
An X-ray apparatus includes a telescopic column support with concentrically positioned tubular sections nested one within another. Each of the sections except the innermost section has three guide bars triangularly spaced on the inner surface. Each section except the outermost section has rollers on its outer surface cooperating with the adjacent guide bars of the surrounding section. The guide bars cooperate with the rollers in a generally circumferential direction rather than radially of the tubular members. Mounting plugs held in apertures of the telescopic sections by an interference fit mount the guide bars and rollers. The plugs are initially insertable into the apertures with a clearance fit, when an appropriate temperature differential is established between the plugs and sections. A pulley wheel outside a fixed column section and carried by the first movable section supports a loop of control and power cables to take up and release the cables relative to a fixed location on a subsequent section, and at a rate equal to the change in length of the column, thereby avoiding slack in the cable during extension and retraction of the column.

REFERENCES:
patent: 3373285 (1968-03-01), Barrett
patent: 3541334 (1970-11-01), Sobolewski

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