Apparatus for tilting a relatively mov- able x-ray source about a pivot point in the detector plane

Claim 1

X-RAY APPARATUS COMPRISING AN X-RAY TABLE HAVING A TABLE TOP FOR SUPPORT OF A PATIENT, X-RAY IMAGING MEANS MOUNTED ABOVE SAID TABLE TOP AND MOVABLE PERPENDICULARLY RELATIVE THERETO, AN X-RAY TUBE MOUNTED WITHIN SAID TABLE FOR PROJECTION OF AN X-RAY BEAM INTO INTERSECTION WITH SAID IMAGING MEANS, MEANS FOR EFFECTING MOVEMENT OF SAID X-RAY TUBE ALONG A PATH PARALLEL TO SAID TABLE TOP FOR PROJECTION OF THE X-RAY BEAM AT DIFFERENT POSITIONS ALONG SUCH TOP, AND ALIGNING MEANS OPERABLE DURING SUCH MOVEMENT FOR TILTING THE X-RAY TUBE ABOUT A PIVOT POINT IN A PLANE OF SAID IMAGING MEANS TO MAINTAIN SUCH TUBE ALIGNED WITH THE IMAGING MEANS IRRESPECTIVE OF THE LATTER''S POSITION.