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:
Mar. 12, 1985
Filed:
Jul. 06, 1983
Gerhard De Vries, Garbsen, DE;
Continental Gummi-Werke Aktiengesellschaft, Hanover, DE;
Abstract
An extruder which serves for kneading and extruding rubber and synthetic material mixtures. The extruder is equipped with a rotatably mounted screw, and pin bodies which project into the interior of the housing. These pin bodies can be damaged, and in particular can be bent or even broken. In order to quickly determine these failures, and possibly to even determine deformed pin bodies, the latter are incorporated into an electrical monitoring circuit. The pin bodies are provided with electrical inserts which influence the monitoring circuit when deformations or breakage of the pin bodies occur, in order in this way to transmit a signal or even electrically switch off the extruder. In place of the electrical inserts, photo conductors can be used, the optical conductivity of which can be utilized for determining the aforementioned damages.