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:
Feb. 23, 1999
Filed:
Nov. 06, 1996
Applicant:
Inventor:
Yun Lu, Mundelein, IL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A21C / ; B01F / ; B01F / ;
U.S. Cl.
CPC ...
366 84 ; 3661562 ; 366189 ; 366300 ; 425209 ;
Abstract
A twin screw extruder type batch mixer that is comprised of two screws parallel to each other with the distance between the two screw center lines being larger or equal than the half of the sum of two screw diameters and the two screws conveying material in the opposite direction during mixing and reacting stage and the same direction during charging and discharging stages; and a barrel casing completely enclosing said screws which can run clockwise and counter-clockwise independently.