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. 17, 1998
Filed:
Mar. 26, 1996
Mark Daniel Banas, Cuyahoga Falls, OH (US);
Gary Robert Burg, Canton, OH (US);
Malcolm George Marshall, Wadsworth, OH (US);
Thomas Alan Murray, Akron, OH (US);
Bruce Joseph Turner, Wadsworth, OH (US);
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
An extruder for extruding an associated material includes an extruder housing that has a feed section, a center section that includes a throttle section, and an outlet section with an extruder screw disposed in the extruder housing. The extruder also includes a throttle at the throttle section. The throttle has a plurality of pins that extend radially into the housing. The pins are adjusted by a cam extending around the extruder housing. The cam has an inner wall that has a plurality of cam surfaces engageable by pins. The radius of each of the cam surfaces gradually decreases from a maximum radius to a minimum radius distance. The pins have springs that urge the pins radially outward to contact the inner wall of the cam. The cam is rotated by a piston and cylinder assembly. The extruder further includes sensors for temperature, gauge, weight, and other properties of the material. The extruder also has a control apparatus for controlling the speed of the extruder and the throttle based upon any combination of temperature, gauge, weight, and production requirements while the extruder is in operation.