Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – With suction pump inlet communicating with bore bottom
Patent
1989-02-13
1990-03-27
Novosad, Stephen J.
Boring or penetrating the earth
With above-ground means for handling drilling fluid or cutting
With suction pump inlet communicating with bore bottom
125 20, 175215, 408 58, B23B 4100, B23B 4734, E21B 2102
Patent
active
049112538
ABSTRACT:
Core water and mud collector tool for use by a carrotting drill during the piercing of a concrete floor, said tool being connected as an adaptor between the motor shaft and the shoulder of the circular carrotting drill. Circulating through said tool is a liquid first applied at the exterior of the core drill, passing between the diamond bit segments, and being aspirated to the top between the carrot and the interior of the drill, to be evacuated through the interior of the above adaptor by holes of sizes increasing starting from the inside of the adaptor shaft, going through the wall of said shaft, the tunnel opening of the barrel and the suction tube. The suction has for effect to conserve the carrot in the interior of the carrotting drill when the concrete floor is pierced, such suction helping to exert a reaction in the direction of drilling which facilitates drilling as water is being aspirated, instead of being projected by jet, thus keeping the zone surrounding the punched hole clean.
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