Patent ID: 9393657
Filing Date: 2016-07-19
CPC Classification: A47L,B08B,B23Q,Y02P

Claim Text:
1. A masonry bore cleaning device for cleaning a bore extending through a surface and comprising: an L-shaped fitting including a tube having first and second extremities; a vacuum coupling on the first extremity; an elongated cover tube connected to the second extremity and projecting distally therefrom to terminate in a free extremity, the cover tube being longitudinally collapsible from an extended to a retracted position and being biased to the extended position; an elongated pressure tube fixed on one end to the tube and projecting through the cover tube and cooperating therewith to form a longitudinal annulus and terminating at a distal extremity, the pressure tube including at least one opening near the distal extremity whereby a workman may grasp the fitting, abut the free extremity against the surface around the bore and press the fitting toward the surface to compress the cover tube longitudinally to cause the distal extremity of the pressure tube to project distally into the bore so that high pressure air may be introduced through the opening in the pressure tube to force high pressure air out of the opening while a partial vacuum is applied through the coupling to generate a pressure differential in the annulus to drive any debris from the bore through the annulus and out the coupling.