Patent ID: 6382733
Filing Date: 2002-05-07
Classification: E21C

Abstract:
A mounting member, for a mineral cutting apparatus, said mounting member having:(i) an enlarged head incorporating an annular seating shoulder, (ii) a circular section solid pin extending integrally from said head and adapted, in use, to be received in a circular section socket of a pick box and to be retained therein, (iii) a circumferential groove intermediate opposite ends of said pin to receive a fluid sealing member, (iv) a base of said pin remote from said enlarged head presenting a circular face to which fluid pressure may be applied to extract said pin from its receiving socket, (v) a first portion of said pin beyond said circumferential groove, remote from said head, being of such diameter that, in use, it is a slide fit within a pick box socket, and (vi) a second portion of said pin, between said groove and said head being of such diameter that, in use, it is an interference fit within a pick box socket.