Patent ID: 7506461

Claim:
A screening, crushing or mixing bucket, comprising a body designed for use as a bucket for an excavating machine or a bucket loader, comprising a bottom plate ( 1 ) and side walls ( 6 ), as well as screening, crushing or mixing elements ( 3 , 3 a , 4 , 5 ) located between a back portion of the bottom plate ( 1 ) and a pivoting joint ( 2 ) associated with the bucket boom, the mixing elements including working cylinders ( 3 a ), which are rotatable about a shaft and which, while rotating, perform the screening, crushing or mixing of material contained in the bucket and at the same deliver screened, crushed or mixed material out of the bucket between or through working cylinders ( 3 a ), as well as enclosures ( 7 ) associated with the side walls for housing a drive mechanism and bearing assemblies for working cylinders ( 3 a ), the enclosures ( 7 ) being located mainly between planes defined by the side walls ( 6 ), such that the enclosures ( 7 ) are inside the bucket, characterized in that it has enclosure walls ( 8 ), which make the bucket well narrower in an axial direction of the working cylinders ( 3 a ) when going in the direction from a mouth of the bucket towards the working cylinders ( 3 a ), each set in a two-way inclined orientation relative to a plane extending by way of the working cylinders' ( 3 a ) shafts, such that a bottom end of the enclosure wall ( 8 ), which is towards a bottom plate ( 1 ), lies substantially closer to a plane defined by the working cylinders ( 3 a ) than a top end of the enclosure wall, and that an angle (α) between the enclosure wall ( 8 ) and a normal of the side wall ( 6 ) is at least 30°, preferably at least 40°.