Bearing/gearing section for a PDM rotor/stator
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United States of America Patent
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Oct 22, 2019
Grant Date -
Jun 19, 2014
app pub date -
Mar 8, 2012
filing date -
Mar 8, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A moving or progressive cavity motor or pump is disclosed, the motor including a rotor and a stator, the stator having one or more inserts or gearing sections to limit a lateral movement of the rotor relative to the stator. In some embodiments, the motor or pump may include a rotor and a stator, the stator including: a first, helicoidal, section comprising a compliant material having a first compressibility; a second section, helicoidal, non-helicoidal, or combination thereof, having a second compressibility, wherein the second compressibility is less than the first compressibility.
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