Bottom hole motor for driving rock-breaking tool
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United States of America Patent
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May 21, 1985
Issued Date -
N/A
app pub date -
Jun 18, 1984
filing date -
May 1, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A bottom hole motor for driving a rock-breaking tool comprises a motor unit kinematically coupled with a spindle unit. The spindle unit has a housing inside which extends a shaft connected with the rock-breaking tool and mounted in the housing with the aid of radial bearings and rings and races, said rings and races arranged coaxial with the shaft and designed to retain rolling bodies located between the rings, races and the shaft. The shaft has toroidal grooves which are in immediate contact with rolling bodies. This invention can be used for drilling and repair of oil, gas and exploratory wells.
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