Shredder with multi-point cutters

US9144803B2 · kind B2 · utility

Assignee

• VECOPLAN AG · DE

Inventors

• Roswell Davis · Sophia, US
• Stefan Kaiser · Greensboro, US
• Gary Kolbet · High Point, US

Key dates

• Filing date: Jun 24, 2011
• Grant date: Sep 29, 2015
• Expiry date: Dec 20, 2033

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B02C2018/188
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A shredder includes a rotor supporting a plurality of multi-point cutters that mesh with a counter-knife having generally V-shaped grooves. Each cutter has at least one corner defined by an intersection between two contiguous side faces of the body of the cutter. The corner defines a plurality of cutting points spaced apart along a first direction. The cutters are mounted on the outer peripheral surface of the rotor such that the first direction of each cutter is substantially tangent to the outer peripheral surface, and such that the corners of the cutters mesh with respective V-shaped grooves in the counter-knife as the rotor rotates about its axis. The multiple points of each cutter encounter and mesh with the groove in the counter-knife in a sequential fashion.