Patent ID: 8550790
Filing Date: 2013-10-08
Classification: B65G,B66C,Y10T

Abstract:
1. A vacuum generator driven by compressed air and arranged to supply vacuum to a vacuum means for gripping, wherein a chamber ( 6 ) is associated with the vacuum generator and arranged to be brought in flow connection ( 9 ) with the vacuum means for gripping via a valve ( 15 ) which is actuated by overpressure accumulated in the chamber to open said connection ( 9 ) to the vacuum means for gripping in order to discharge the overpressure to the vacuum means for gripping in result of interruption of the compressed air flow (P), wherein said chamber ( 6 ) in addition comprises an additional flow connection ( 11 ) with the ambient atmosphere, and in the additional flow connection ( 11 ) a one-way valve ( 10 ) which is arranged to open the connection ( 11 ) with the atmosphere in result of the air pressure in the chamber ( 6 ) falling below the atmospheric pressure.