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, 1990
Filed:
Jan. 26, 1988
Masakazu Inoue, Tokyo, JP;
Abstract
A dispersing and grinding apparatus disperses and grinds material by the use of a particulate grinding medium. A separator installed at the discharge end of the apparatus separates the processed material from the grinding medium. The separator comprises a stationary stator, and a rotatable rotor mounted so that the rim area of the rotor is spaced from and faces the stator to define therebetween a small gap which is large enough to permit the processed material to pass therethrough though small enough to prevent the grinding medium from passing therethrough. The rotor has a plurality of protruding portions which extend radially outwardly from the rotor and which effectively centrifugally disperse the grinding medium which tends to collect and concentrate at the rim area of the rotor. The protruding portions are removably fastened to the rotor, either as separate protruding members or as part of a one-piece structure, so that the protruding portions can be removed and replaced as they become worn. By such a construction, the useful life of the rotor is significantly prolonged because the grinding medium is positively centrifugally dispersed away from the rim area of the rotor by the protruding portions and the protruding portions, when worn, can be removed and replaced without the need of replacing the rotor.