Backreamer

Details Backreamer Backreamer

1997-04-14

1999-07-13

Neuder, William

Boring or penetrating the earth

Bit or bit element

With helical-conveying portion

175406, E21B 1044

Patent

active

059213310

ABSTRACT:
A directional horizontal boring backreamer for enlarging an initial bore, including three equally spaced radially extending wings attach to a common axle, equally spaced around the axle, each wing including a plurality of cutters positioned along the wing for enlarging the bore, and attached to each wing is a gusset plate welded to the axle at the juncture of the wing and axle and to the wing for added bending strength to the wing. The gusset plates also including an internal passage way from the center passage of the axle to the outer edge of the wings to support and supply a series of fluid jets supplied by fluid for assistance in cutting during the backreaming operation.

REFERENCES:
patent: 5687807 (1997-11-01), Woods et al.

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