ROTARY DRIVE FOR APPLYING ROTARY TORQUE TO A SHAFT TO BE AXIALLY VIBRATED
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United States of America Patent
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N/A
Issued Date -
Jun 10, 2010
app pub date -
Mar 13, 2008
filing date -
Mar 29, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A drive assembly suitable for a spindle connection to a drill string or other shaft, the assembly comprising or including a drive shaft, a shuttle rotatable under the action of the drive shaft but being slidable relative thereto, the shuttle carrying magnets, a containment assembly to constrain the shuttle to a shuttle axis, the containment assembly carrying magnets to co-act with those of the shuttle as the shuttle is rotated by the drive shaft thereby to cause the shuttling of the shuttle, a spindle not forming part of the shuttle arrangement to receive vibration from said containment assembly and/or said shuttle (e.g.; through a cushion of liquid), a carriage assembly on part of the spindle slidable on an axis coincident with and/or parallel to the spindle's rotational axis, and a drive carried by the carriage assembly to rotate the spindle or to rotate both the spindle and part of the carriage assembly.
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