Boring or penetrating the earth – Wedging slip assembly for supporting a pipe or rod
Reexamination Certificate
2005-02-01
2005-02-01
Neuder, William (Department: 3672)
Boring or penetrating the earth
Wedging slip assembly for supporting a pipe or rod
C166S075140, C166S077520, C464S163000
Reexamination Certificate
active
06848520
ABSTRACT:
A bushing for retaining a spider and comprising a basket portion having an opening in its upper end and a base at its lower end, there being a further opening in the base to allow a tubing string to extend substantially axially through the basket portion. The bushing further comprises a flange extending at least partially around the upper opening, wherein the bushing can be suspended through an opening in a rig floor to be supported by the flange.
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PCT International Search Report from PCT/GB00/03666, dated Mar. 13, 2001.
Moser Patterson & Sheridan
Neuder William
Weatherford / Lamb, Inc.
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