Patent ID: 8061639

Claim:
Material crusher including a material crusher ejection door ( 9 , 19 , 29 , 39 , 49 ) for a casing of the material crusher (I), the ejection door having an internal surface and an axis of rotation, comprising at least one aperture ( 10 , 20 , 30 , 40 , 50 ) of defined dimensions cut right through along the transversal axis of said door, and at least one deflector ( 12 , 22 , 32 ) being positioned facing and above said aperture, on the internal surface of the ejection door ( 11 , 31 ), forming a predefined acute angle of attack ( 25 ) with said ejection door, said at least one deflector being positioned parallel to the axis of rotation of the ejection door; and wherein the material crusher comprises an internal main casing, at least one rotor, hammers on said rotor, at least one anvil, a closed casing base covered with resistant armour plates, a feed opening, an ejection grid arranged above the rotor, and the ejection door.