Methods for manufacture of pipe element having shoulder, groove and bead

Patent metadata

Field	Value
Publication number	US-9010164-B2
Application number	US-201414288654-A
Country	US
Kind code	B2
Filing date	May 28, 2014
Priority date	Dec 2, 2010
Publication date	Apr 21, 2015
Grant date	Apr 21, 2015

Abstract

In a method for forming a pipe element, a spin forming tool is revolved in an orbit of increasing diameter within the pipe element. The pipe element is captured within a die. The method forms a circumferential shoulder at one end. The shoulder has an outer diameter greater than the outer diameter of the pipe element. A groove is formed adjacent to the shoulder. The groove has a floor surface with an outer diameter less than the outer diameter of the pipe element. A bead is formed contiguous with the groove. The bead has an apex with an outer diameter greater than the outer diameter of the pipe element.

First claim

What is claimed is:

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…

Assignees

• Victaulic Co Of America

Inventors

• Novitsky Michael R
• Haas Earl
• Dole Douglas R

Classifications

• B21D22/16

  Operations & Transport · mapped topic

• F16L17/04

  Mechanical Engineering · mapped topic

• F16L21/022 Primary

  Mechanical Engineering · mapped topic

• F16L17/025 Primary

  Mechanical Engineering · mapped topic

• B21D15/06

  Operations & Transport · mapped topic