US 2007/0181721 A1 · Devices and methods for shredding media into different sizes

Abstract

Shredding devices and methods capable of cutting material, such as one or more pieces of media, into different-sized portions. In certain examples, a cross-cut shredding device comprises multiple blades, each having a plurality of blade tips disposed around the periphery of the blades. The blades tips may be unequally spaced to produce shredded pieces having varying lengths. In other examples, a cross-cut or strip-cut shredding device may comprise blades having varying spaces therebetween, which results in shredded pieces with varying widths. Varying the blade tip spacing, the blade width, and/or the blade spacing is advantageously used to produce shredded media of different sizes. Certain shredding devices are configured to produce smaller shredded pieces toward a middle portion of the material to increase the recombination time of shredded material.

Claims21

Dependent claims

A consumer-sized shredding device for cutting media into different-sized pieces, the consumer-sized shredding device comprising:

a first rotatable member configured to rotate about a first axis;
a second rotatable member configured to rotate about a second axis substantially parallel to said first axis;
a first plurality of blades disposed along said first rotatable member;
and
a second plurality of blades disposed along said second rotatable member, each of said first and second plurality of blades configured to cut a piece of media passing between said first and second rotatable members during rotation of said first and second rotatable members, wherein said second plurality of blades further comprises:
a first blade,
a second blade adjacent said first blade and separated from said first blade along said second axis by a first spacing, and
a third blade adjacent said second blade and separated from said second blade along said second axis by a second spacing larger than said first spacing.

5 more elements

Dependencies are inferred from the claim text.

Devices and methods for shredding media into different sizes

Life of this patent

Devices and methods for shredding media into different sizes

Life of this patent

Abstract

Claims21