Coveyor systems for package irradiation plants

Claim 1

A CONVEYOR SYSTEM FOR PASSING MATERIAL THROUGH AN IRRADIATON CELL COMPRISING (A) FIRST AND SECOND FIXED CONVEYOR TRACKS ARRANGED PARALLEL TO EACH OTHER, (B) MATERIAL CARRIERS ON SAID TRACKS, (C) MEANS FOR MOVING UNIFORMLY SPACED CARRIERS ALONG SAID TRACKS, (D) A FURTHER SECTION OF CONVEYOR TRACK ARRANGED FOR TRANSVERSE MOVEMENT RELATIVE TO THE FIXED TRACKS, (E) MEANS FOR ALIGNING SAID MOVEABLE TRACK ALTERNATELY WITH EACH OF SAID FIXED TRACKS, (F) A FIRST ROTATABLE ARM, ADAPTED TO ABUT A CARRIER DURING PART OF THE REVOLUTION OF THE ARM, FOR TRANSFERRING A CARRIER FROM A FIXED TRACK ONTO THE LONGITUDINALLY ALIGNED MOVEABLE TRACK AND VICE VERSA, (G) A SECOND ROTATABLE ARM, ADAPTED TO ABUT SAID MOVEABLE TRACK DURING PART OF THE REVOLUTION OF THE ARM, FOR MOVING THE MOVEABLE TRACK FROM ALIGNMENT WITH ONE TRACK OF ALIGNMENT WITH THE OTHER TRACK, AND (H) PHASING MEANS INTERCONNECTING SAID ROTATABLE ARMS WITH THE CARRIER MOVING MEANS ON THE SAID FIXED TRACKS WHEREBY A CARRIER IS TRANSFERRED FROM ONE FIXED TRACK TO THE OTHER FIXED TRACK IN SUCH MANNER THAT THE SPACING OF THE CARRIERS ON THE FIXED TRACKS REMAINS UNIFORM.