Overshot

Details Overshot Overshot

1982-07-16

1985-05-07

Marbert, James B.

Handling: hand and hoist-line implements

Grapple

Well type

E21B 3102

Patent

active

045154031

ABSTRACT:
An overshot for the handling and retrieval of "drop" type well survey instruments that are employed in directional drilling. The overshot has an elongated, generally cylindrical body with a pair of elongated, generally longitudinally arranged, diametrically opposed locking arms mounted therein for both longitudinal sliding and radial tilting movement. The locking arms are longitudinally biased by means of a spring-loaded plunger axially centered in the body, such biasing causing the arms to be cammed radially inwardly toward their locking positions.

REFERENCES:
patent: 2266873 (1941-12-01), Long
patent: 2507127 (1950-05-01), True

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