Patent · US Expired

Device for the manufacture of a composite part

US5039293A · kind A · utility

2Cited by

4References

4Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Ulrich Knipp · Bensberg, DE
Otto Ganster · Odenthal, DE
Bernhard Rentz · Leverkusen, DE

Key dates

Filing date	Jun 6, 1988
Grant date	Aug 13, 1991
Priority date	—
Expiry date	Jun 6, 2008

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C2791/001
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The present invention relates to a process and a device for the production of a composite part by the sequential introduction of several fillings (consisting of at least one free-flowing reaction mixture, of which at least one forms a foamed material) into the hollow space of the mold of a closed form tool. A mixing device is attached to form tool. The mixer comprises injector nozzles for the reaction components pointing into a mixing chamber and an ejector piston for the cleaning of the mixer chamber. The ejector piston may be slid forward right up to the outlet orifice of the mixing chamber.

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