Boring or penetrating the earth – With means movable relative to tool to receive – retain – or... – Core-retaining or severing means
Patent
1989-08-28
1990-06-05
Neuder, William P.
Boring or penetrating the earth
With means movable relative to tool to receive, retain, or...
Core-retaining or severing means
175253, 175254, E21B 1002, E21B 2514
Patent
active
049305875
ABSTRACT:
A coring tool comprises a core cutting section and an actuating section disposed thereabove. The core cutting section includes axially telescoping outer and inner barrels. The inner barrel includes a jaw carrier which carries pivotable core-catching jaws normally covered along their radially inner sides by a driver sleeve. When the driver sleeve is raised by the actuator section the jaws are uncovered. Thereafter, the driver sleeve raises the jaw carrier to bring the jaws into contact with a stationary inclined jaw-deflecting surface to force the jaws laterally inwardly through the core. The actuator section relies upon fluid pressure to release for movement a vertically risible member which is mechanically lifted by a drill string to transmit vertical forces to the driver sleeve from a drill string.
REFERENCES:
patent: 3225845 (1965-12-01), Koontz et al.
patent: 3292717 (1966-12-01), Hall et al.
patent: 3768580 (1973-10-01), Mann et al.
patent: 4018284 (1977-04-01), Perkins
patent: 4466497 (1984-08-01), Soinski et al.
patent: 4606416 (1986-08-01), Knighton et al.
patent: 4607710 (1986-08-01), Radford
patent: 4664205 (1987-05-01), Knighton et al.
Easton Andrew R.
Koskie, Jr. Earl T.
Young David E.
Diamant Boart-Stratabit (USA) Inc.
Neuder William P.
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