Patent ID: 8726711

Claim:
A set of tapered thread rolls for use in a thread rolling tool, the set of thread rolls comprising: a first thread roll comprising a first cylindrical body comprising an end and a circumferential surface, wherein the cylindrical body defines a longitudinal axis, and a first set of annular rings protruding from the circumferential surface of the first body, wherein at least a portion of the first set of annular rings comprises an angled portion comprising at least two truncated annular rings that are truncated relative to at least one additional annular ring, wherein each of the at least two truncated annular rings defines an angled surface portion, and wherein the angled surface portions of the at least two truncated annular rings together define a line having an angle with respect to the longitudinal axis that is greater than zero degrees; and a second thread roll comprising a second cylindrical body comprising an end and a circumferential surface, wherein the cylindrical body defines a longitudinal axis, and a second set of annular rings protruding from the circumferential surface of the second body, wherein at least a portion of the second set of annular rings comprises an angled portion comprising at least two truncated annular rings that are truncated relative to at least one additional annular ring, wherein each of the at least two truncated annular rings defines an angled surface portion, and wherein the angled surface portions of the at least two truncated annular rings together define a line having an angle with respect to the longitudinal axis that is greater than zero degrees; wherein the first set of annular rings and the second set of annular rings are offset from each other by an offset spacing with respect to a plane when the end of the first cylindrical body and the end of the second cylindrical body are aligned along the plane.