Latch means for well tools and components

Details Latch means for well tools and components Latch means for well tools and components

1980-02-11

1981-09-22

Pate, III, William F.

Wells

Detents or clutches

166208, 285 3, 285137A, 285315, 285DIG21, E21B 2302

Patent

active

042904838

ABSTRACT:
Improved latch means for well tools, such as retrieving or handling tools, and well components, such as tubing hangers and casing hangers, employing latch segments disposed in an annular series in an outwardly opening groove free from the usual windowed retaining lip. The segments are retained in the groove by the annular means used to retract the segments, and that means is improved both as to capability of retaining the segments in the groove and its ability to be actuated for retraction of the segments.

REFERENCES:
patent: 3543847 (1970-12-01), Haeber
patent: 3893717 (1975-07-01), Nelson
patent: 4181331 (1980-01-01), Cowan

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