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:
Dec. 06, 1977
Filed:
Jun. 08, 1976
Applicant:
Inventor:
Albrecht Kahmann, Weingarten, DT;
Assignee:
Escher Wyss GmbH, Weingarten, DT;
Primary Examiner:
Int. Cl.
CPC ...
B02C / ;
U.S. Cl.
CPC ...
2412613 ; 241197 ; 241296 ;
Abstract
The teeth of the stator and rotor of the refiner are each formed with a surface layer on the leading flanks which is harder than the end faces so as to maintain a sharp cutting edge. The hardness of the surface layer is at least 600 HB while the end face is of a hardness of from 280 to 320 HB.