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:
Aug. 19, 1986
Filed:
May. 04, 1984
Gensuke Okada, Tokyo, JP;
Tatsuo Hagiwara, Funabashi, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Kobe, JP;
Abstract
A vertical type roller mill for grinding a material including a grinding table and grinding rollers of a tire shape in contact with each other. The grinding table has a grinding surface composed of a surface portion constituting a portion of an imaginary conical surface having a apex located on a center axis of the table, and a curving surface portion located outwardly of and contiguous with the surface portion constituting the imaginary conical surface. The grinding rollers each have a grinding surface composed of a surface portion constituting a portion of another imaginary conical surface sharing the apex with the first mentioned conical surface, and a curving surface portion located outwardly of and contiguous with the surface portion constituting a portion of the last mentioned imaginary conical surface and having a greater curvature than the curving surface portion of the grinding surface of the grinding table. The surface portions of the grinding table and grinding rollers each constituting a portion of the respective imaginary conical surface portion define a coarse grinding zone for grinding the material into coarse particles, and the curving surface portions of the grinding table and grinding rollers define a fine grinding zone for grinding the coarse particles of the material into fine particles.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile