Patent · US Active

Tube for transporting high-viscosity materials

US8074686B2 · kind B2 · utility

2Cited by

14References

17Claims

0Family size

Assignee

XPERION GmbH · DE

Inventors

Markus Wolfram · Ratingen, DE
Knut Kasten · Esslingen am Neckar, DE
Raimund Mäckle · Eßlingen, DE
Dietmar Muller · Fürstenfeldbruck, DE
Thomas Maurer · Pieter Appelplein, US

Key dates

Filing date	May 14, 2004
Grant date	Dec 13, 2011
Priority date	—
Expiry date	Apr 17, 2027

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16C2226/60
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

Transport pipe for high viscosity materials, in particular for concrete. The transport pipe includes an inner pipe (10) made of an abrasion-resistant plastic, at least one metallic joint element (12), as well as a reinforcing jacket (14) which envelops at least the internal pipe. In order to ensure a reliable and enduring joint between inner pipe and joint element, it is proposed in accordance with the invention, that the radially projecting collar of the joint element is defined by a ring-shaped end face (20) and by a thereto joined ring step (22) extending radially towards the inside of the pipe and recessed axially from the ring-shaped end face, and wherein the plastic material of the inner pipe (10) engages in the ring step (22) from the inside of the pipe.

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