Patent ID: 7597473

Claim:
An x-ray recording device comprising: an x-ray emitter that emits x-rays; an x-ray detector that detects said x-rays after passage through an examination subject; a supporting device on which said x-ray detector and said x-ray emitter are mounted so that said x-rays, after penetrating said subject, strike said detector; a stand unit; a retainer mechanically connected between said stand unit and said supporting device, said retainer comprising only one first pivoting arm, rotatably mounted on said stand unit for rotation around a first vertical rotational axis, and only one second pivoting arm, rotatably mounted on said first pivoting arm for rotation around a second vertical rotational axis; a displacement arm mechanically connected between said stand unit and said supporting device that is extendable and retractable to displace said supporting device toward and away from said stand unit along a horizontal displacement axis that is perpendicular to a horizontally extending longitudinal axis; a drive arrangement in driving connection with each of said first and second pivoting arms and said displacement device; and a control unit that operates said drive arrangement to move said support arm along said longitudinal axis, by rotating said first and second pivoting arms relative to each other and relative to said stand unit to cause said supporting device to execute movements relative to said stand unit that tend to move the supporting device out of perpendicularity with said longitudinal axis, and by expending and retracting said displacement arm in coordination with rotation of said first and second pivoting arms to compensate for said movement out of perpendicularity with said longitudinal axis, to always maintain said support device perpendicular to said longitudinal axis while moving said support device along said longitudinal axis.