Boring or penetrating the earth – Processes
Reexamination Certificate
2008-11-14
2010-02-09
Gay, Jennifer H (Department: 3672)
Boring or penetrating the earth
Processes
C175S107000, C175S320000
Reexamination Certificate
active
07658243
ABSTRACT:
Systems and methods for preventing slippage and rotation of components installed in a tubular housing member and/or along a rotatable tubular shaft during drilling operations are disclosed herein. The housing and/or rotatable shaft include a shoulder disposed proximate to one end. An adjustable member is secured proximate to the opposite end. One or more components are installed, covering a first portion of the surface between the adjustable member and shoulder. One or more spacing members are installed to cover substantially all of the remaining surface. The adjustable member is tightened such that the adjustable member and the shoulder apply a compressive axial load to the components and spacing members, causing frictional forces between adjacent objects greater than the torque acting on the housing and/or tubular shaft, causing each component to remain stationary with respect to the surface to which it is secured.
REFERENCES:
patent: 1708378 (1929-04-01), Dale
patent: 2507849 (1950-05-01), Bland
patent: 6416225 (2002-07-01), Cioceanu et al.
David Michael Louis
Eggleston Douglas Dewayne
Noe Paul Freeman
Salzer, III John A.
Gay Jennifer H
Matthews, Lawson & Bowick PLLC
Sayre James G
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