Patent ID: 7810618
Filing Date: 2010-10-12
Classification: B06B

Abstract:
1. Vibration generator comprising a working piston which is supported in a reciprocating manner in a housing between first and second pressure chambers, wherein, depending on a position of the working piston, a pressure fluid can be directed alternately into the first or second pressure chambers by a control device and the working piston can be put into a reversing movement for generating vibrations, wherein the control device comprises a control piston which is supported in a displaceable manner inside the working piston, wherein the working piston comprises: a main return line for connecting a return control chamber with a fluid return; and two return distributing lines for alternately connecting the return control chamber with the first or second pressure chambers to respectively discharge the pressure fluid from the first and second chambers out of the housing through the main return line and the fluid return.