Patent attributes
A tangential reversible cutting blade, comprising:a prismatic body which is bordered by two opposed, identically shaped first surfaces and four identically shaped, interposed lateral surfaces,four equal-length main cutting edges on each of the first surface which are defined with one lateral face each,a raised web on each lateral surface with the four webs being symmetrical with a central plane through the lateral surfaces,a through mounting bore coaxial with the axis through the centres of the first surfaces,metal-cutting faces on the lateral surfaces which are defined by fillets adjacent to the main cutting edges on either side of the associated web, andcutting-tool flanks on the first surfaces which are defined by a spherical surface shape of the first surfaces adjacent to the main cutting edges.