Patent ID: 7975945
Filing Date: 2011-07-12
Classification: B02C

Abstract:
1. An anti-jam cutting knife device for a paper shredder, comprising: a guide-parting plate having a notch opened in a central portion of an upper edge thereof, with a parting knife-edge formed at a bottom edge of said notch for dividing papers at a middle section, said guide-parting plate having a pair of blade shaft transfix holes and two fixing rod transfix holes for mounting on respective blade shafts and fixing rods at a middle section of a blade wheel assembly of a paper shredder; a circular parting wheel sheathed on one blade shaft, and positioned closely adjacent to a side of said guide-parting plate, an outer diameter of the parting wheel being higher than said parting knife-edge at the bottom of said notch of the guide-parting plate; and a paper-guiding sheet sheathed on a fixing rod, and positioned opposite said parting-wheel for cooperating with said parting wheel in guiding and drawing, paper over said parting knife-edge; wherein the guide-parting plate holds the blade shafts in the blade shaft transfix holes preventing separation of the blade shafts, and the guide-parting plate divides paper at a middle portion, whereby a paper jam can be prevented while shredding the paper.