Patent · US Expired

Device and process for the production of a reaction mixture from at least two flowable reaction components

US5346673A · kind A · utility

6Cited by

6References

2Claims

0Family size

Assignee

Maschinenfabrik Hennecke GmbH · DE

Inventors

Ferdinand Althausen · Neunkirchen, DE
Jurgen Wirth · Cologne, DE
Reiner Raffel · Siegburg, DE

Key dates

Filing date	Oct 27, 1993
Grant date	Sep 13, 1994
Priority date	—
Expiry date	Oct 27, 2013

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/86622
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

In the production of a reaction mixture which forms plastic material, in particular foamed plastic material, from at least two flowable reaction components, the inlet members or other switch-over members which must be switched over in a precise fashion, and controlled by a sliding valve comprising a slide which is assigned a restoring spring which operates in opposition to a moving electromagnet, and a holding electromagnet. First, the holding electromagnet is fully activated whereupon the moving electromagnet is activated. Following the build-up of force of the moving electromagnet, the holding electromagnet is switched off so that the inlet member or other switch-over member opens abruptly.

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