Locking apparatus for earth boring cutter or stabilizer

Details Locking apparatus for earth boring cutter or stabilizer Locking apparatus for earth boring cutter or stabilizer

1976-04-14

1977-09-06

Purser, Ernest R.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175 53, E21B 924

Patent

active

040462064

ABSTRACT:
The rolling cutter or stabilizer member of a rotary drill string unit is effectively locked in place by a locking device. The device allows the cutter or stabilizer member to carry radial, tangential and axial loads. A support member includes a surface positioned perpendicular to the resultant of the expected radial load and tangential load. A support shaft includes a slabbed-off surface positioned perpendicular to the resultant of said resultant loads and said axial load.

REFERENCES:
patent: 3216513 (1965-11-01), Robbins et al.
patent: 3601207 (1971-08-01), Coski et al.
patent: 3612196 (1971-10-01), Dixon
patent: 3705635 (1972-12-01), Conn
patent: 3835944 (1974-09-01), Bingham
patent: 3851718 (1974-12-01), Fink

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