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. 03, 1990
Filed:
May. 19, 1988
Kazuhisa Nishigai, Tokyo, JP;
Juumei Harada, Tokyo, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A kneading apparatus for an elastomer has a casing with a pair of rotors mounted therein. The casing defines a rotor chamber having a cocoon shaped cross-section. The pair of rotors are rotatably disposed in the rotor chamber, and extend in parallel with each other. Each of the rotors is integrally provided with at least two continuous blades, the rotating blades define a space therebetween in which rubber-like material is introduced for kneading. Each of the blades is continuously provided along a length of the rotor, and each of the blades includes a first blade portion oriented in a first direction at axially one end portion of the rotor, and a second blade portion oriented in a second direction. The first blade portion is provided at rotationally advanced position, and the second blade portion is provided at rotationally rear position. A radial clearance portion between the inner surface of the rotor chamber and the end face of the second blade portion is larger than a radial clearance portion defined between the inner surface and the end face of the first blade portion.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile