Patent ID: 6056070
Filing Date: 2000-05-02
Classification: B25D

Abstract:
A hydraulic ramming apparatus assembly comprising:a cylindrical body defining a cylinder bore and a guide bore extending from said cylinder bore, a piston slidably inserted in said cylinder bore so as to be reciprocal therein, and upper and lower pressure-receiving chambers defined between an inner peripheral surface of said cylindrical body and an outer peripheral surface of said piston;a ramming tool having a rod body which is removably inserted into said guide bore of said cylindrical body;a chisel which is alternatively removably mounted to said guide bore of said cylindrical body in place of said ramming tool;a mechanism for mounting said remming tool to said cylinder body and for resiliently biasing moving said rod body toward said piston, said mechanism being removably connected to said cylindrical body to permit removal of said rod body and insertion and coupling of said chisel in said bore; andmeans for alternately mounting said ramming tool or said chisel in said guide bore.