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. 17, 2011
Filed:
Dec. 24, 2004
Yuichiro Ogawa, Fuchu, JP;
Yuichiro Ogawa, Fuchu, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
An extruder system includes an extruder for axially extruding a rubber or plastic material in a barrel. A gear pump adjusts an amount of extruded material that is discharged by engagement of gears. The gear pump includes a driving pinion and a driven pinion engaged with, and driven by, the driving pinion. A gear casing accommodates the pinions and includes side plates on both axial sides of the pinions. A casing body is arranged between the side plates and encloses a space on a radially outer side of the pinions. The side plate includes a suction side plate that has a suction port arranged opposite to that side of engagement region between the pinions and a discharge side plate that has a discharge port arranged opposite to that side of engagement region between the pinions. The suction and discharge ports are maintained out of axial communication with each other.