Patent ID: 6776092
Filing Date: 2004-08-17
Classification: B41F

Abstract:
In a machine for processing printing material, a rotary lead-through assembly for supplying an operating fluid to a rotor having a rotor inlet opening, the rotary lead-through assembly comprising:an operating cylinder including an expansion chamber, and a piston having a piston outlet opening, said piston being mounted to be displaced towards the rotor for coupling the rotor inlet opening and said piston outlet opening with one another; a pressure generator connected both to said expansion chamber and to the rotor upon coupling the rotor inlet opening and said piston outlet opening with one another; and a threshold value valve disposed between said expansion chamber and said piston outlet opening, said valve being automatically opened upon exceeding a given threshold value of an excess pressure of the operating fluid, said threshold value valve having a valve element different from said piston of said operating cylinder.