Patent ID: 8667866
Filing Date: 2014-03-11
Classification: B22F,B23P,C04B,C22C

Abstract:
1. A blank for use in forming a machining tool comprising: a body comprising at least one end face; and a recess formed in said at least one end face comprising a first part of the recess wherein said first part of the recess extends from the at least one end face at an angle of about 15° to about 60° and a second part of the recess continuing from said first part of the recess extending from the at least one end face at an angle of about 40° to about 90° wherein said first part of the recess and said second part of the recess converge at a first radius; the recess further comprising a first side part extending from the second part wherein said first side part extends along at least one side of said blank from an axial center point of said blank at an angle of about 5° to about 50°; a third part of the recess extending from the at least one end face at an angle of about 15° to about 60° wherein a fourth part of the recess continuing from said third part of the recess extending from the at least one end face at an angle of about 40° to about 80° wherein said third part of the recess and said fourth part of the recess converge at second radius; the recess further comprising a second side part extending from the fourth part, wherein said second side recess extends along at least one side of said blank from an axial center point of said blank at an angle of about 5° to about 50° ,and a cavity positioned between the first part of the recess and the third part of the recess.