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. 05, 1985
Filed:
Feb. 13, 1984
Applicant:
Inventors:
Assignee:
Battenfeld Extrusionstechnik GmbH, Bad Oeynhausen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
264 23 ; 264 401 ; 264 402 ; 264 404 ; 264 407 ; 425141 ; 425147 ; 425155 ; 425159 ; 4251742 ;
Abstract
An extruder is controlled in response to the thickness measurement of the extruded strand. The thickness measuring head is initially given a displacement transverse to the extrusion direction, preferably around the extruded strand and the output signals from the head are integrated to form a mean value around the periphery. A comparison of this mean value with the set point wall thickness value is then utilized to provide continuous correction of the output of the head which is utilized to regulate the extruder operation.