Non-rotating spring loaded stabilizer

Details Non-rotating spring loaded stabilizer Non-rotating spring loaded stabilizer

1979-11-19

1981-08-18

Leppink, James A.

Boring or penetrating the earth

With tool shaft detail

Shaft carried guide or protector

166241, E21B 1710

Patent

active

042841542

ABSTRACT:
There is provided a non-rotating, self-centering stabilizer (10). The stabilizer (10) includes a cylindrical sleeve (12) disposed about a rotating mandrel (34). A plurality of wear-resistant pads (18A, 18B and 18C) partially extend from a similar number of longitudinal channels (14A, 14B and 14C) to form a stabilizing relationship with the wall of a hole being drilled.

REFERENCES:
patent: 2589534 (1952-03-01), Buttolph
patent: 2696367 (1954-12-01), Robishaw
patent: 2832419 (1958-04-01), Webber
patent: 2929453 (1960-03-01), Conrad
patent: 3080924 (1963-03-01), Baker et al.
patent: 3104134 (1963-09-01), Nielsen et al.
patent: 3370657 (1968-02-01), Antle

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