Boring or penetrating the earth – Wedging slip assembly for supporting a pipe or rod
Patent
1986-02-24
1987-12-29
Leppink, James A.
Boring or penetrating the earth
Wedging slip assembly for supporting a pipe or rod
188 67, E21B 1910
Patent
active
047154560
ABSTRACT:
A hydraulically actuated slip assembly having a slip pivotally connected at its sides by parallel links to the side surfaces of a slip block with slip engaging surfaces which allow the slip to be engaged and disengaged from tubing or pipe and operated within a reduced area. An alternative embodiment utilizes a floating die to allow the parallel links to disengage the slip from the pipe in a compact configuration.
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Cavins Advance Spiders Model "C"; Section 200; p. 24A and Instructions Section 200; p. 24B.
Dunn Cooper L.
Poe, Jr. Frank E.
Schwertner Dan R.
Whitby Melvyn F.
Bowen Tools, Inc.
Dang Hoang C.
Leppink James A.
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