Comminuting device with counter-rotating rotors

Solid material comminution or disintegration – Apparatus – Cooperating comminuting surfaces

Reexamination Certificate

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C241S294000

Reexamination Certificate

active

08038088

ABSTRACT:
A device for comminuting feedstock is provided that includes a cutting tool with a first rotor and at least one second rotor, each of which rotate around their longitudinal axis with an opposite rotation direction. Each rotor is provided with a number of cutting discs, which are arranged at an axial distance to one another. In this case, the cutting discs of the first rotor are located on gaps and with radial overlapping relative to the cutting discs of the second rotor. The cutting discs along their circumference have support surfaces for accepting cutting tools, whose cutting edges move past one another over the course of the rotation of rotors with the formation of a cutting clearance. For the positionally precise fixation of the cutting tool on the cutting discs, a positive fit is formed between the cutting tools and cutting discs, a positive fit groove running in the plane of the cutting disc is arranged in the common contact area, the groove in which at least one positive fit strip engages.

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patent: 6481655 (2002-11-01), Feigel, Jr.
patent: 2003/0122006 (2003-07-01), Dubech et al.
patent: 1289 663 (2007-01-01), None

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