Patent · US Expired

Apparatus for the extrusion of tubular bodies of synthetic-resin material

US4137028A · kind A · utility

11Cited by

2References

10Claims

0Family size

Assignee

REIFENHAEUSER GMBH & CO. KG

Inventors

Paul Reitemeyer · Troisdorf, DE
Franz J. Kupper · Bensberg, DE

Key dates

Filing date	Jan 24, 1978
Grant date	Jan 30, 1979
Priority date	—
Expiry date	Jan 24, 1998

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C2948/92933
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

An apparatus for the extrusion of tubular bodies of synthetic-resin material and especially large-diameter pipes, in which the die for forming the tube is connected to an extrusion press and includes an outer member and an inner member between which the material is forced. On the outer member there is provided a calibrating sleeve and the die carries a radioactive thickness-measuring means.

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