Patent ID: 7921568

Claim:
A utility knife blade for use with conventional retractable and fixed blade utility knives comprising: a generally planar blade body having a substantially trapezoidal peripheral configuration, the blade body defining a back edge, a cutting edge located on an opposite side of the blade body relative to the back edge, and two side edges located on opposite sides of the blade body relative to each other and extending between the back and cutting edges of the blade body, wherein the intersection of each side edge and the cutting edge forms a respective first cutting point, and the blade body defines no more than two score lines, wherein each score line is located proximate to a respective side edge and defines a respective removable cutting segment extending between the score line and the respective proximate side edge, and a second cutting point defined by the intersection of the respective score line and the cutting edge formed upon removal of the respective cutting segment from the utility knife blade; wherein the second cutting point is laterally spaced a first distance from the first cutting point; the blade body further defines two notches formed in the back edge thereof for engaging a blade-engaging device on a handle of the utility knife, the notches being laterally spaced relative to each other a second distance that is approximately equal to the first distance; and each of the score lines defines a respective side edge portion oriented at an acute angle relative to the cutting edge, and extends from one of (i) the cutting edge to the back edge, (ii) the cutting edge to the side edge proximate to the respective score line, and (iii) the cutting edge to the point of intersection between the back edge and the side edge proximate to the respective score line.