Locking arm for well tool

Details Locking arm for well tool Locking arm for well tool

1988-05-03

1989-04-11

Steinberger, Brian S.

Acoustics

Geophysical or subsurface exploration

Well logging

367911, 166212, G01V 140

Patent

active

048197602

ABSTRACT:
A well tool having a locking arm that is rapidly deployed by a long strike of a hydraulic piston having a small area and is locked in the deployed position by a short stroke of a hydraulic piston having a larger area.

REFERENCES:
patent: 2699001 (1955-01-01), McMahan
patent: 3978939 (1976-09-01), Trouiller
patent: 4575831 (1986-03-01), DeCorps et al.
patent: 4616703 (1986-10-01), Laurent et al.
patent: 4715469 (1987-12-01), Yasuda et al.

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