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:
Oct. 03, 1989
Filed:
Mar. 03, 1989
Applicant:
Inventors:
Jumei Harada, Tokyo, JP;
Kazuhisa Nishigai, Tokyo, JP;
Assignee:
Bridgestone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01F / ; B29B / ;
U.S. Cl.
CPC ...
366 85 ; 366300 ; 366301 ; 425209 ;
Abstract
In a rubber-like material kneading apparatus having a pair of rotors with radially outwardly extended long vanes in a chamber, each of the rotors has at least three long vanes which are arranged around a rotary shaft at equal angular intervals in such a manner that the cutting angle formed by the rear surfaces of the long vanes and the tangential lines at the outermost ends of the long vanes is larger than 40.degree., whereby the rubber-like material can be kneaded with high efficiency.