Patent ID: 9731423
Date: 2017-08-15
CPC Classifications: B25J,B65G,F16K

Claim:
1. A vacuum lifting device for fixating goods by means of vacuum, wherein said vacuum lifting device comprises one or more suction devices connected to a vacuum source through flow blocking valves, each flow blocking valve comprising: a valve housing part forming a flow duct between a flow inlet arranged at an inlet end of said duct and a flow outlet arranged at an outlet end of said duct, wherein a seat is arranged at said flow outlet, a displaceable valve blocking device arranged to move inside said flow duct, wherein said blocking device is arranged to block the flow through said valve when being forced against said seat, and obstruction means being displaceable in a direction substantially transverse in relation to a longitudinal direction of said flow duct, wherein said obstruction means is arranged to controllably obstruct the passage of said displaceable valve blocking device without completely disabling flow through said flow duct; and wherein said vacuum lifting device further comprises pressurising means for creating a pressure difference between the inside and the outside of at least a part of said obstruction means.