Patent ID: 6179234
Filing Date: 2001-01-30
Classification: B02C

Abstract:
An apparatus for mounting material directing impellers to a rotating table of a centrifugal impact rock crusher comprising:(a) a mounting plate fixedly attached to a crusher table, said mounting plate having a top surface which is separated from said table, a front surface, and a rear surface, said mounting plate having a predetermined width between said front and rear surfaces;(b) said mounting plate having a slot defined therein which extends between said front and rear surfaces and opens out of said top surface;(c) an impeller having an impact face and a mounting face which are generally opposed to one another;(d) a stob having a predetermined length, projecting from said mounting face of said impeller and configured to slidably fit within said slot;(e) a nub mounted on the extremity of said stob configured not to fit through said slot;(f) said stob and nub being configured such that when said stob is positioned within said slot said nub interacts with the rear surface of said mounting plate to prevent movement of said impeller relative to said mounting plate in a first circumferential direction and the mounting face of said impeller interacts with the front surface of said mounting plate to prevent movement of said impeller relative to said mounting plate in a second circumferential direction, wherein(g) said slot has opposed sides which are angled radially outwardly as they extend towards said table.