Portable X-ray or gamma source

Claim 1

AN ASSEMBLY COMPRISING A BODY OF SHIELDING MATERIAL HAVING A CURVED PASSAGE EXTENDING THERETHROUGH BETWEEN FIRST AND SECOND OPPOSITE ENDS OF THE BODY, A CAPSULE CONTAINING RADIOACTIVE MATERIAL AND BEING SLIDABLY MOUNTED IN THE PASSAGE FOR MOVEMENT BETWEEN AN ACTIVE POSITION IN WHICH IT IS ADJACENT SAID FIRST END OF THE BODY AND CAN PROJECT ITS ACTIVITY THROUGH SUCH FIRST END AND AN INACTIVE POSITION IN WHICH IT LIES BETWEEN AND SPACED FROM SAID FIRST AND SECOND ENDS WHILE BEING NEARER THE SECOND END AND IS CAPABLE OF PROJECTING ITS ACTIVITY THROUGH NEITHER OF SAID ENDS, A ROD CONNECTED TO THE CAPSULE AND EXTENDING THEREFROM THROUGH THE PASSAGE AND OUT SAID SECOND END OF THE BODY, A BUSHING MOUNTED IN THE END OF THE TUBE ADJACENT THE SECOND END OF THE BODY A ND FITTING THE ROD RELATIVELY CLOSELY, A FLEXIBLE TUBE ATTACHED TO SAID SECOND ENDND OF THE BODY AND HOUSING THE PORTION OF THE ROD EXTERIOR OF SAID SECOND END OF THE BODY WHILE LEAVING THE END OF SAID EXTERIOR ROD POSITION EXPOSED FOR MANIPULATION, AND RESILIENT MEANS ACTING BETWEEN THE ROD AND THE END OF THEE FLEXIBLE TUBE BEYOND WHICH THE ROD LIES EXPOSED WHEREBY THE CAPSULE IS URGED TO ITS INACTIVE POSITION.