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:
Jun. 20, 1989
Filed:
Jan. 07, 1985
Applicant:
Inventor:
Helmer Gustafsson, Valkeakoski, FI;
Assignee:
Yhtyneet Paperitehtaat Oy Jylhavaara, Valkeakoski, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B02C / ;
U.S. Cl.
CPC ...
241294 ; 2412611 ;
Abstract
A conical grinding cutter for use in grinding, or refining, wood pulp, wherein the cutter part constituted by the mantle of the cone is assembled of a plurality of separate sectors. In order to improve the grinding cutter of prior art composed of sectors, in the present invention the cutter sectors have been welded together by their sides for achieving a rigid juncture substantially over the entire length of the grinding cutter.