Georg Fischer Jrg Ag

Georg Fischer Haustechnik Ag

Peter Heer

Erasmo Porfido

Markus Breyer

Michael Bamberger

Renato Pinardi

Oliver Schwarz

The invention relates to a method for producing a tubular hollow body () with at least three pipe openings, partly or completely consisting of plastics material. It is provided that a lost core pipe (), which has a connection opening () on each of its ends and has at least one docking opening () along its length, is produced, that the core pipe () is introduced into a cavity of a mold, with two non-lost core pieces () being arranged with one of their ends () respectively against the connection openings () in a sealing manner and a non-lost core part () being arranged with one end against the docking opening () in a sealing manner, in that plastics material () is then introduced into the mold cavity to encapsulate the core pipe (), the core pieces () and the core part () and that, once the plastics material () has cured, the core pieces () and the core part () are withdrawn from the hollow body () created. The invention also relates to a corresponding hollow body ().

Method for producing a tubular hollow body, and tubular hollow body

The invention relates to a method for producing a tubular hollow body () with at least three pipe openings, partly or completely consisting of plastics material. It is provided that a lost core pipe (), which has a connection opening () on each of its ends and has at least one docking opening () along its length, is produced, that the core pipe () is introduced into a cavity of a mould, with two non-lost core pieces () being arranged with one of their ends () respectively against the connection openings () in a sealing manner and a non-lost core part () being arranged with one end against the docking opening () in a sealing manner, in that plastics material () is then introduced into the mould cavity to encapsulate the core pipe (), the core pieces () and the core part () and that, once the plastics material () has cured, the core pieces () and the core part () are withdrawn from the hollow body () created. The invention also relates to a corresponding hollow body ().

A quick-action coupling for coupling pipes includes a tubular inner part having an outer surface for supporting a pipe to be coupled; an inner sleeve and a clamping ring, each surrounding at least a portion of the tubular inner part for clamping the pipe to be coupled between the outer surface of the tubular inner part and the clamping ring; a toothed ring between the inner sleeve and the clamping ring; and an outer sleeve surrounding at least a portion of the inner sleeve, the toothed ring and the clamping ring, the outer sleeve comprises a cylindrical region having at least two inside diameters (d, d) and a conical region, wherein the clamping ring is received in the conical region.

Growing community of inventors

Lottstetten, Germany

Peter Heer