Patent · US Expired

Device for overlay-welding pipes bends

US4577795A · kind A · utility

3Cited by

2References

10Claims

0Family size

Assignee

Kraftwerk Union Aktiengesellschaft · DE

Inventors

Siegfried Forner · Erlangen, DE
Karl-Heinz Langhammer · Berlin, DE
Dieter Pellkofer · Herzogenaurach, DE
Wolfgang Nahr · Erlangen, DE

Key dates

Filing date	Dec 24, 1984
Grant date	Mar 25, 1986
Priority date	—
Expiry date	Dec 24, 2004

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K37/0538
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A device for overlay-welding a pipe interior having an arm extensible into the interior of a respective pipe, the arm carrying a welding head at a free end thereof includes a rotating device in the form of a wheel surrounding and supporting the pipe, and a swiveling device disposed in the wheel for moving the pipe in a circular arc about the center of the wheel and transversely to the plane of the wheel, the arm being curved and being secured to a part of the swiveling device connected to the wheel, the welding head being rotatable in the plane of the wheel for overlay-welding pipes formed at least partly with a bend therein.

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