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:
Apr. 13, 2004
Filed:
Feb. 11, 2003
Shuichi Aihara, Tokyo, JP;
Yuichi Nagahara, Tokyo, JP;
Metso Minerals (Matamata) Limited, Matamata, NZ;
Abstract
The invention provides a crusher which can produce uniform finely pulverised material without having to increase the speed of the rotor, and which has a good rate of productivity. The crusher comprises crushing vanes having extensions formed protruding radially from the outer surface of the rotor and extending below a raw material drop point A of a dead-bed , and an annular wall similarly positioned below the raw material drop point A of the dead-bed , on an inner rim of a lower plate of the crushing chamber , and pulverizing is effected by the material which rebounds and falls from the dead-bed , striking the extensions of the crushing vanes