Patent ID: 9010164
Filing Date: 2015-04-21
Classification: B21B,B21D,F16L

Abstract:
1. A method of forming a circumferential shoulder and groove in a pipe element, said method comprising: capturing an end of said pipe element in a die; inserting a tool within said pipe element; revolving said tool in an orbit about a longitudinal axis of said pipe element; increasing the diameter of said orbit while revolving said tool so as to force said tool against an inner surface of said pipe element; conforming said pipe element to said die so as to form said circumferential shoulder therein, said shoulder having a larger outer diameter than an original outer diameter of said pipe element prior to forming; forcing said tool against said inner surface of said pipe element while revolving said tool in said orbit of increasing diameter causing a portion of said pipe element adjacent to said shoulder to move radially inwardly away from said die such that a gap exists in between the die and the pipe element thereby forming said circumferential groove, said groove having a smaller outer diameter than the outer diameter of the remainder of said pipe element.