Patent ID: 6152643
Filing Date: 2000-11-28
Classification: F16B,Y10S,Y10T

Abstract:
A coupling device for use in inserting a soaking bar into a clay plugged blast furnace tap hole with a rotary percussion tool, said coupling device comprising a generally cylindrical body having;(a) a first axial aperture at a first end for fitting said coupling device onto a driving post of said rotary percussion tool,(b) a second axial aperture at a second end for receiving an end of said soaking bar in axial alignment with said coupling, said second axial aperture further including;1. an impact body defining a base surface thereof for transferring axial impact loads from such rotary impact tool to such soaking bar, and2. means to receive and retain such soaking bar in axial alignment with said coupling and against said impact body which comprises a plurality of spring biased jaw members disposed in a circular arrangement against said impact body and equally spaced around such end of said soaking bar, and which in cooperation with internal side walls of said second axial aperture, said jaw members are forced inwardly against such end of said soaking bar releasably engaging such end of such soaking bar when such soaking bar is fully inserted into said second axial aperture.