Patent · US Active

Tool and method for expanding a pipe end

US9248617B2 · kind B2 · utility

15Cited by

3References

10Claims

0Family size

Assignee

UPONOR INNOVATION AB · SE

Inventors

Yngve Lundequist · Surahammar, SE
Hakan Persson · Göteborg, SE
Erika Sundqvist Byhlin · Virsbo, SE
Johan Backlund · Onsala, SE

Key dates

Filing date	Aug 11, 2011
Grant date	Feb 2, 2016
Priority date	—
Expiry date	Oct 15, 2032

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C57/04
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A pipe end is expanded by an expander tool (1) comprising a plurality of jaws (10), which are radially movable in relation to a center axis between a retracted position and expanded position. The jaws (10) when retracted are intended to be inserted into the pipe end. The jaws (10) have outer jaw surfaces which are intended for engagement with the inner surface of the pipe end and which lie adjacent to one another in the retracted position of the jaws (10). The tool (1) further comprises a piston (2) or a cone with a tapered end for moving the jaws (10) between said positions and means moving the piston (2) or the cone in a reciprocating manner in the axial direction for expanding the pipe end. The tool (1) further comprises support structures whereby the jaws (10) are supported in a circumferential direction in the expanded position. A method for expanding a pipe using such a tool is also disclosed.

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