Patent ID: 6792735
Filing Date: 2004-09-21
Classification: B28D,E04G,E21B,Y10T

Abstract:
Apparatus to permit the reinforcement of masonry structures, comprising:a concentric double piped drill column for drilling a hole in a masonry structure to be reinforced so as to enable the hole to be filled with a reinforcement, said concentric double piped drill column having an inner pipe and an outer pipe surrounding and spaced from said inner pipe to create an annulus therebetween; a drill bit assembly attached to said concentric double piped drill column; a motor coupled to said concentric double piped drill column for causing each of the inner and outer pipes thereof to be rotated and the hole to be drilled in the masonry structure such that solid masonry core material is collected within said inner pipe; an air compressor connected to force a supply of air under pressure downwardly through the annulus between the inner and outer pipes of said concentric double piped drill column and around said drill bit assembly so that said drill bit assembly is cooled and the drilling dust generated by said drill bit assembly is entrained within said air supply; and means for suctioning the entrained drilling dust away from the drill bit assembly by way of an exhaust passage established between the outer pipe of said concentric double piped drill column and the masonry structure through which the hole is drilled.