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. 05, 1977
Filed:
Oct. 17, 1973
Applicant:
Inventor:
Peter F Heilmayr, McPherson, KS (US);
Assignee:
Certain-teed Products Corporation, Valley Forge, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29F / ;
U.S. Cl.
CPC ...
425461 ; 4253 / ;
Abstract
Extrusion equipment is disclosed, including an extrusion die structure having a die passage formed to provide improved flow conditions and control including equalization of the flow of the plasticated resin material in a zone close to the lip portion of the die.