Patent ID: 7784722

Claim:
A stirring or dispersing device ( 1 ), having a hermetically sealed mixing chamber ( 5 ), a tool ( 2 ), and a drive mechanism ( 4 ) located outside of the mixing chamber ( 5 ), wherein the tool ( 2 ) can be driven around a central shaft in the mixing chamber ( 5 ) and has a rod-shaped element ( 3 ) for force transmission from the drive mechanism ( 4 ) to the tool ( 2 ), wherein the rod-shaped element ( 3 ) is connected at the entry to the mixing chamber ( 5 ) with a diaphragm ( 6 ), which is a part of a wall ( 7 ) of the mixing chamber ( 5 ), and wherein the rod-shaped element ( 3 ) can be put into a wobbling movement by the drive mechanism ( 4 ), so that its end located in the interior of the mixing chamber ( 5 ) performs a rotating movement, characterized in that the tool comprises a number of grinding elements ( 22 ) or balls to be introduced into the mixing chamber ( 5 ) and wherein the stirring or dispersing device is further characterized in that, with its end facing the drive mechanism ( 4 ), the rod-shaped element ( 3 ) loosely engages an eccentric area of the rotating portion of the drive mechanism ( 4 ).