Abstract: A cutter knife body having a grip portion, the grip portion including a trigger lever, a cutting blade provided on an end of the cutter knife body, a pin rotatably supporting the cutting blade in the cutter knife body, a locking member placed in an opening formed in the cutter knife body, and a pair of cutting blade protector flanges, each protector flange being disposed on a side of the cutting blade, each cutting blade protector flanges having an outward protrusion from a surface of the flange, the grip type cutter knife including a pair of springs located between the pin and each of the outward protrusion from the flange surface, the pair of flanges being slidably supported in the cutter knife body by the pin and the pair of springs.

Abstract: The present invention is directed to a cutter knife body having a grip portion, wherein the grip portion comprises a trigger lever, a cutting blade provided on an end of the cutter knife body, a pin rotatably supporting the cutting blade in the cutter knife body, a locking member placed in an opening formed in the cutter knife body, and a pair of cutting blade protector flanges, each protector flange being disposed on a side of the cutting blade, wherein each of said pair of cutting blade protector flanges has an outward protrusion from a surface of the flange, the grip type cutter knife characterized by further comprising: a pair of springs located between the pin and each of the outward protrusion. from the flange surface, wherein the pair of flanges is slidably supported in the cutter knife body by the pin and the pair of springs.