Patent ID: 6895674

Claim:
A roofing utility blade for a roofing knife, comprising: a flat blank having a body portion, a proximate end, a distal end, a first side edge and a second opposing side edge; an arcuate cutting edge defined at said proximate end; an arcuate cutting edge defined at said distal end; a first curvilinear portion formed in said first side edge adjacent said proximate end, said first curvilinear portion terminating in a sharpened hooked portion; a first v-shaped sharpened cutting component formed in said second opposing side edge adjacent said proximate end, said first v-shaped sharpened cutting component terminating in a first sharpened point, a first vertex of said first v-shaped cutting component formed by the intersection of a first and a second slanted straight cutting edges, said first slanted cutting edge extending from said first side edge to said first vertex, said second slanted cutting edge extending from said first sharpened point to said first vertex; a second curvilinear portion formed in said second opposing side edge adjacent said distal end, said second curvilinear portion terminating in a sharpened hooked portion; a second v-shaped sharpened cutting component formed in said first side edge adjacent said distal end, said second v-shaped sharpened cutting component terminating in a second sharpened point; a second vertex of said second v-shaped cutting component formed by the intersection of a third and a forth slanted straight cutting edges, said third slanted cutting edge extending from said second opposing side edge to said second vertex, said forth slanted cutting edge extending from said second sharpened point to said second vertex; and an opening disposed through said body portion at central area of said flat blank between said first and second side edges and said proximate and distal ends.