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:
Nov. 21, 1978
Filed:
Jul. 11, 1977
Fritz W Schneider, Strasslach-Hailafing, DE;
Ivica Grgic, Munich, DE;
Elastogran Maschinenbau GmbH & Co., Munich, DE;
Abstract
Method and apparatus for preparing multi-component plastic materials wherein at least one of the components is compounded with admixed solid materials or is highly viscous, the various components are continuously recycled and are metered separately by associated continuously operating feed pumps, and a mixing operation is effected in a mixing chamber served by a control piston. In the circuit for the compounded or viscous component a transmitter device is connected in a position downstream of the respective continuously operating feed pump and upstream of the associated mixing chamber inlet port. This transmitter device operates in a manner similar to a piston pump and increases the delivery pressure of the compounded or viscous component upon discharge into the mixing chamber whereby the operation of the transmitter is operatively coupled to the operation of the control piston at the mixing chamber. The component circuit may furthermore include a filling pump and a check valve.