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:
May. 03, 2005
Filed:
Dec. 01, 1999
Applicants:
Gary Robert Burg, Massillon, OH (US);
Malcolm George Marshall, Wadsworth, OH (US);
Inventors:
Gary Robert Burg, Massillon, OH (US);
Malcolm George Marshall, Wadsworth, OH (US);
Assignee:
The Goodyear Tire & Rubber Company, Akron, OH (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C047/60 ;
U.S. Cl.
CPC ...
Abstract
A screw nose for a rubber extruder screw has an upstream portion of increasing diameter providing working engagement of the rubber flowing from the screw with the extruder barrel and a downstream portion of decreasing diameter providing working engagement of the rubber with a converging tapered wall of a flow channel block for reducing the shrinkage and pressure drop at the discharge end of the screw and thereby prevent porosity and blisters in an extruded rubber component.