Patent · US Expired

Pipe connector

US6511102B2 · kind B2 · utility

20Cited by

2References

24Claims

0Family size

Assignee

Vallourec Mannesmann Oil & Gas Germany GmbH · DE

Inventors

Gerhard Krug · Duisburg, DE
Friedrich Lenze · Ratingen, DE
Erich Quadflieg · Krefeld, DE

Key dates

Filing date	Jul 10, 2001
Grant date	Jan 28, 2003
Priority date	—
Expiry date	Sep 20, 2021

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B17/042
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A pipe connector having a pin element having a tapered outer threaded section between an external shoulder and a pin end face, a first threadless pin section between the external shoulder and the outer threaded section, and a second threadless pin section between the outer threaded section and the pin end face. Provided for threaded engagement with the pin element is a box element having a tapered inner threaded section between an internal shoulder and a box end face, a first threadless box section between the internal shoulder and the inner threaded section, and a second threadless box section between the inner threaded section and the box end face. Suitably, the second threadless pin section and the first threadless box section in the area of the internal joint is at least twice as long as the first threadless pin section and the second threadless box section in the area of the external joint.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.