Patent ID: 7025491

Claim:
An apparatus for at least one of homogenizing and dispersing at least one viscous substance provided in combination with at least one solid or at least one other substance of different viscosity, having at least three axis-parallel rotatable shafts disposed in a screw space in a housing along a circle with equal central-angle distance and provided at least partly with tightly intermeshing screw elements, the housing being provided on the radially external and internal sides of the screw space with axis-parallel concave circular segments receiving the particular shaft and with openings into the screw space, wherein the shafts are provided in the area outside the openings over a length (L=L 1 +L 2 +L 3 ) corresponding to at least ten times the outside screw diameter (D) of the screw elements with the screw elements having a pitch (S) of at most three quarters of the outside screw diameter (D) over a length of at least three times the outside diameter (D) of the screw elements.