Patent · US Active

Making pipe for liquid conveyance

US9951891B2 · kind B2 · utility

0Cited by

5References

19Claims

0Family size

Assignee

UPONOR INNOVATION AB · SE

Inventors

Ralf Winterstein · Neuffen, DE
Stephan Müller · Monheim, DE

Key dates

Filing date	Feb 23, 2012
Grant date	Apr 24, 2018
Priority date	—
Expiry date	Oct 24, 2032

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C48/09
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to an apparatus for making a multilayer composite pipe. The multilayer composite pipe comprises an innermost layer (2) made of plastic. The pipe has a seamless metal layer (4) or a metal layer (4) having an axial, non-overlapping seam. The outer surface of the metal layer is treated for changing its outer appearance. There-after a transparent outermost layer (8) is provided on the outer surface of the metal layer. The structure of the pipe is such that the pipe can be permanently bent to certain angles without significant spring back.

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