Patent ID: 7744028

Claim:
A stator ( 1 ) of an impact crusher for separation of compound materials with an outer face ( 4 ) of the casing wall and an inner face ( 3 ) of the casing wall, which is plated with a plurality of plates ( 10 ) with ribs ( 13 , 17 ), wherein the plates are designed as wear parts and are attached replaceably, the stator comprising: the plates being metal cast plates having at least one transverse threaded bore ( 18 ) casted within the metal cast plates, and the outer casing wall ( 4 ) of the stator having passages through which fixing bolts ( 20 ) with threads fitting into the threaded bore of the plates can be passed through and are visible from an outside of the stator, wherein the fixing bolts ( 20 ) comprise a slotted hole ( 23 ) disposed on the outside of the stator and through which a wedge-shaped cotter ( 25 ) is insertable.