Inspection machine

Claim 1

APPARATUS FOR MOUNTING A SENSOR FOR MOVEMENT ALONG COORDINATE AXES OVER A PLANAR SURFACE HAVING A FRONT EDGE, A BACK EDGE AND TWO SIDES EDGES, COMPRISING A FIRST AND SECOND RAIL ASSEMBLY POSITIONED IN PARALLEL RELATIONSHIP ON EACH SIDE EDGE OF SAID PLANAR SURFACE ADJACENT THE BACK EDGE AND EXTENDING UPWARDLY ABOVE SAID PLANAR SURFACE A PREDETERMINED DISTANCE AND INCLUDING A PORTION EXTENDING FORWARDLY IN A CANTILEVER MANNER TOWARD A LINE OVER SAID FRONT EDGE OF SAID PLANAR SURFACE, EACH OF SAID RAIL ASSEMBLIES HAVING A GUIDE RACK AND A PARALLEL FLANGE ON SAID CANTILEVER PORTION, A FIRST AND SECOND END TRUCK MOVABLY MOUNTED ON SAID RESPECTIVE FIRST AND SECOND TRACKS, EACH OF SAID END TRUCKS HAVING A CLAMP ARM INCLUDING A ROLLER GUIDE TO ENGAGE THE RESPECTIVE FLANGE TO HOLD SAID TRUCK TO SAID RAIL, A FIRST CLAMP ASSEMBLY MOUNTED ON SAID FIRST TRUCK, A SECOND CLAMP ASSEMBLY MOUNTED ON SAID SECOND TRUCK, A TUBULAR SHAFT EXTENDING BETWEEN SAID TRUCKS WITH THE ENDS OF SAID SHAFT BEING RIGIDLY CLAMPED BY SAID FIRST AND SECOND CLAMP ASSEMBLIES RESPECTIVELY, A SLEEVE PERIPHERALLY SURROUNDING SAID SHAFT, A ROLLER BEARING SET AT EACH END OF SAID SLEEVE, EACH ROLLER BEARING SET COMPRISING THREE ROLLER BEARINGS EQUALLY SPACED AROUND THE PERIPHERY OF SAID SLEEVE, EACH OF SAID ROLLER BEARINGS BEING ROTATABLY MOUNTED IN SAID SLEEVE WITH THE PERIPHERY OF SAID BEARING IN ROLLING ENGAGMENT WITH THE SURFACE OF SAID SHAFT, WHEREBY SAID SLEEVE IS MOVABLE ALONG SAID SHAFT BUT IS RESTRAINEDLY MOUNTED AGAINST DEFLECTION FORCES, A BEAM FIXEDLY MOUNTED IN PARALLEL RELATIONSHIP TO SAID SHAFT, SAID SLEEVE HAVING A U-SHAPED BRACKET FIXEDLY MOUNTED THEREON, THE ARMS OF SAID USHAPED BRACKET SLIDABLY ENGAGING EACH SIDE OF SAID BEAM TO RESTRAIN ROTATION OF SAID SLEEVE ABOUT THE SHAFT, AND MEANS FOR MOUNTING SAID SENSOR ON SAID SLEEVE.