Solid material comminution or disintegration – Apparatus – Cooperating comminuting surfaces
Reexamination Certificate
2011-03-15
2011-03-15
Miller, Bena (Department: 3725)
Solid material comminution or disintegration
Apparatus
Cooperating comminuting surfaces
C241S242000, C241S243000
Reexamination Certificate
active
07905437
ABSTRACT:
A waste shredder (1) includes at least one loading chamber (3), two or more rotors (4) placed in seats formed in the bottom wall of the loading chamber (3) and a movable hopper (2) sliding above the loading chamber (3) and provided with a reciprocating translational movement. The hopper (2) has two end walls (B, B′) and carries a plurality of stiff vanes (5) placed in the spaces between the rotors (4), the end walls (B, B1) and the stiff vanes (5) protruding downward until they skim the bottom of the loading chamber (3) to press the material (8) to be shredded against the rotors (4). The rotors (4) turn in the opposite direction to the translational movement of the hopper (2) and reverse their direction of rotation when the hopper (2) reverses its direction of translation.
REFERENCES:
patent: 4412659 (1983-11-01), Crawford et al.
patent: 4844363 (1989-07-01), Garnier et al.
patent: 5417375 (1995-05-01), Peterson et al.
patent: 6405949 (2002-06-01), Maguire
patent: 2003/0089478 (2003-05-01), Tanner
patent: WO 2005/072877 (2005-08-01), None
International Search Report, dated Jul. 18, 2008, from corresponding PCT application.
Miller Bena
Satrind S.p.A.
Young & Thompson
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