Patent ID: 7648095

Claim:
An agitating or dispersing apparatus ( 1 ) which includes a hermetically closed mixing chamber ( 5 ), an agitating or dispersing tool ( 2 ) that is driven in this mixing chamber ( 5 ) about a central axis by a rod-shaped element ( 3 ) for transferring the power of a drive ( 4 ) onto tool ( 2 ), and wherein drive ( 4 ) is located outside of the mixing chamber ( 5 ), wherein the rod-shaped element ( 3 ) is connected at the entrance into the mixing chamber ( 5 ) to a membrane ( 6 ) that is part of a wall ( 7 ) of the mixing chamber ( 5 ), wherein the rod-shaped element ( 3 ) is put in a wobbling motion by the drive ( 4 ) so that its end inside the mixing chamber ( 5 ) executes a circular motion, and wherein the end of the rod-shaped element ( 3 ) which is located in the mixing chamber ( 5 ) attacks the agitating or dispersing tool ( 2 ) eccentrically to its axis of rotation.