The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 08, 2003
Filed:
Dec. 29, 1999
Hans-Michael Sulzbach, Königswinter, DE;
Reiner Raffel, Siegburg, DE;
Florian Thiebes, Königswinter, DE;
Hennecke GmbH, Leverkusen, DE;
Abstract
Reaction mixtures which form polyurethane foamed material, with production conditions which are varied during production, e.g. variation of the proportion of foaming agent, variation of the ratio of reaction components, variation of the throughput, or fine adjustment, can be produced by employing an improved apparatus which comprises a depressurisation element (creamer) ( ), wherein a perforated plate or sieve plate constructed as a first throttle plate ( ), and a second perforated or sieve plate, which is constructed as a throttle plate ( ) and which is disposed downstream thereof, are disposed in the creamer ( ), wherein the spacing a between these two throttle plates ( ) can be varied during operation in accordance with the variable production conditions, and wherein a calming element ( ) is disposed after the second throttle plate ( ) in the direction of flow.