Tandem roller stabilizer for earth boring apparatus

Details Tandem roller stabilizer for earth boring apparatus Tandem roller stabilizer for earth boring apparatus

1976-09-07

1978-04-04

Blix, Trygve M.

Cutlery

166241, 175325, 175406, 308 82, E21B 1710

Patent

active

040823733

ABSTRACT:
The eccentric journals of a tandem roller stabilizer are azimuthally positioned relative to each other by cylindrical pins removably disposed in cylindrical holes extending off-axially parallel to the stabilizer axis, the holes being formed by semi-circular cross-section grooves in the outer periphery of the mandrel and correlative semi-circular cross-section grooves in the inner peripheries of the journals.

REFERENCES:
patent: 1776611 (1930-09-01), Akeyson
patent: 3400773 (1968-09-01), Tiraspolsky et al.
patent: 3413045 (1968-11-01), Wohlfeld
patent: 3463270 (1969-08-01), Lundstrom et al.
patent: 3982594 (1976-09-01), Berthiaume

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