Chair for use when taking X-ray pictures

Claim 1

A chair assembly for use when taking X-ray pictures comprising: a carriage structure fitted with wheels or castors first means for rolling said carriage structure to a desired location; a chair having seat parts, said chair being mounted on the carriage structure and including first and second guide frames provided with guide means for guiding in the horizontal plane the movement of said seat parts in the direction of X- and Y-coordinates; bearing means for rotation of said guide frames and therewith also said seat parts, relative to the carriage structure; locking means for releasably locking said guide frames and said seat parts against movement; first control means for controlling movement of said chair relative to said carriage structure and for guiding rotational and coordinate movement of said guide frame; second control means for activating said locking means to lock and release rotational and coordinate movement of said guide frames, said first control means including a stirrup-like control member mounted on one of said guide frames for movement of said frame in the direction of the Y-coordinate; said second control means being arranged adjacent to a central part of said stirrup-like control member; and an outermost part of said chair being formed by said seat parts, said seat parts having arranged on their forwardmost ends a support frame provided with second means for rolling and engaging the underlying support surface as a result of a load being placed on the forwardmost ends of said seat parts.