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. 05, 1985
Filed:
Feb. 10, 1984
Akio Tanaka, Hirakata, JP;
Yasuo Kamo, Sakura, JP;
Abstract
The invention provides an improved vertical type pulverizing and classifying apparatus comprising a lower, pulverizing chamber and an upper, classifying chamber, wherein a material under treatment is carried by gas streams. The disclosed apparatus includes a conduit between the pulverizing chamber and the classifying chamber for sending particles of the material emerging from a primary classification to the classifying chamber for a secondary classification. A floating chamber is provided circumferentially of the conduit to receive particles descending from the classifying chamber for a further classification, whereby resulting fine particles are blown back to the classifying chamber and coarse particles are returned to the pulverizing chamber by way of a material feeder.