Boring or penetrating the earth – With tool drive prime mover or above-ground mechanical... – With diversely operated shafts extending into bore
Patent
1983-11-08
1985-11-05
Novosad, Stephen J.
Boring or penetrating the earth
With tool drive prime mover or above-ground mechanical...
With diversely operated shafts extending into bore
175189, 175285, 175286, 175260, E21B 1032, E21B 728
Patent
active
045507880
ABSTRACT:
A hole groover comprising a pair of grooving bits radially protruding from the surface of a drill rod and connected to swivel upwardly and downwardly near the end of the drill rod where the drill bit is connected. A connecting rod is connected to the inside ends of the groove bits and causes arcuate movement of the grooving bits as it reciprocates. The hole groover further includes a gear box which is connectable to a rotary drilling unit which converts rotational movement of the rotary drill until to reciprocating movement of a lever. The lever is connected to the connecting rod which causes movement of the grooving bits. The device is readily adaptable to be connected to most rotary drill units and the depth and intervals of the grooves can be easily controlled by adjusting the length of the grooving bits and the gear ratios. The device enables grooves to be cut in a wall hole surface, concurrently with the drilling of the hole.
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Kisliuk Bruce M.
Novosad Stephen J.
The Board of Trustees of the University of Alabama
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