Boring or penetrating the earth – Means carried by housing insertable in inaccessible hole to...
Patent
1997-09-30
1999-06-15
Tsay, Frank
Boring or penetrating the earth
Means carried by housing insertable in inaccessible hole to...
175 79, E21B 708
Patent
active
059112832
ABSTRACT:
A sectional drive system for transmitting power linearly or in a curved path to an output, which system includes multiple, tapered and splined, interlocking drive segments which are nested and stacked as a segment string that is rotatable in a selected path. The top one of the segments cooperates with a drive mechanism to effect rotation of the nested segments in concert and the bottom one of the segments connects to a suitable output such as a drill bit. Articulation of the segments with respect to each other due to matching asymmetrical splines and companion spline slots having drive faces and spline support faces of dissimilar size, facilitates dampening of drive vibration and bending of the segment string in or out of the chosen path in any desired direction to facilitate transmitting power in a curved path of desired magnitude from the drive mechanism to the output. The segments are typically connected internally by means of a cable or shaft or externally by "floating" collars to facilitate articulation as a segment string.
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Boyter Ruben C.
Cousins James E.
Harrison John M
Perf Drill, Inc.
Tsay Frank
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