Patent ID: 7654179

Claim:
A system for sharpening crayons, comprising: (a) a blade cartridge, wherein the blade cartridge further includes: (i) a body, wherein the body further includes: a) a first portion further including a partially cone-shaped axial bore passing at least partially through the length thereof; and b) a second portion formed substantially perpendicular to the first portion at one end thereof; and (ii) a first rotary blade mounted on the second portion of the body, wherein the first rotary blade further includes a plurality of chopping teeth formed thereon, and wherein a portion of the first rotary blade extends into the axial bore; (iii) a second rotary blade mounted on the second portion of the body, wherein the second rotary blade further includes a smooth cutting edge formed thereon, and wherein a portion of the second rotary blade extends into the axial bore; (iv) a first planar blade mounted on the first portion of the body substantially parallel to the center axis of the body, wherein at least a portion of the first planar blade extends into the axial bore; and (v) a second planar blade mounted on the first portion of the body at an angle relative to the center axis of the body, wherein at least a portion of the second planar blade extends into the axial bore; and (b) means for affecting at least one of axially rotating the blade cartridge around a crayon that has been inserted into the cone-shaped axial bore; and, axially rotating a crayon that has been inserted into the cone-shaped axial bore within the bore.