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. 06, 1984
Filed:
Jan. 25, 1982
Applicant:
Inventor:
Stavros Paraskevas, Pittsfield, MA (US);
Assignee:
Beloit Corporation, Beloit, WI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B02C / ;
U.S. Cl.
CPC ...
241 4611 ; 241 4617 ; 241 79 ;
Abstract
An improved pulping apparatus having a rotor with a special vane design providing improved defibering action as well as improved circulation. The rotor cooperates with a perforated extraction plate and has a plurality of outwardly extending vanes each having a surface arranged to cooperate with the perforated extraction plate, a smoothly contoured airfoil surface which receives the stock, a leading face and a trailing surface, the leading face having a concave trough-like surface extending for substantially the entire length of the vane.