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:
Jul. 07, 2009
Filed:
Feb. 14, 2008
Applicant:
Curtis F. Johnston, Cleveland Heights, OH (US);
Inventor:
Curtis F. Johnston, Cleveland Heights, OH (US);
Assignee:
Johnsonite Inc., Chagrin Falls, OH (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 47/20 (2006.01); B29C 47/90 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for manufacturing a flexible, extruded plastic wall base with a hollow core is presented. The method includes using extrusion die for heating and extruding plastics using a multi-functional insert within the die and air pressure to create a hollow core in the wall base. The hollow core allows less material to flow though the die so that the die stays hotter and the flow of the extruded plastic is not impeded. The resulting extruded plastic wall base is comprised of a generally thick portion, a generally thin portion and a profile on the face or front of the wall base.