Solid material comminution or disintegration – Apparatus – Cooperating comminuting surfaces
Patent
1984-06-01
1987-04-14
Rosenbaum, Mark
Solid material comminution or disintegration
Apparatus
Cooperating comminuting surfaces
241 60, 241 73, 241242, 241285R, 241294, B02C 1818
Patent
active
046571922
ABSTRACT:
A paper shredder includes a stator housing on which stator blades are adjustably mounted and a rotor assembly on which rotor blades are securely attached. As the rotor turns within a comminuting chamber, the rotor blades and the stator blades provide a scissors-like cutting action. The stator blades are fixed onto the stator housing with their cutting edges aligned in parallel with the axis of rotation of the rotor assembly. Each rotor blade lies in a plane which is skewed with respect to the axis of rotation, and the cutting edge of each rotor blade is substantially concentric with the axis of rotation. In the preferred embodiment, the rotor and stator blade assemblies are enclosed by three sizing screen quadrant sections. One quadrant section remains open for receiving paper into the comminuting chamber. The paper remains inside the comminuting chamber until it is small enough to pass through the openings of the sizing screen. A suction fan is coupled to the output of the assembly to draw a steady flow of air through the comminuting chamber. Particulated paper entrained within the air flow is drawn through the sizing screens and discharged into a disposal container.
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