Progressing cavity pump/motor
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United States of America Patent
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-
Apr 3, 2012
Grant Date -
Dec 23, 2010
app pub date -
Jun 22, 2009
filing date -
Jun 22, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A progressing cavity pump/motor includes a stator tube (12), a rotor (20) within the stator tube, and a coupling assembly (30) interconnecting the upper and lower rotor sections. The coupling includes a drive adapter (32) and a socket adapter (36) for transmitting torque between the upper and lower rotor sections, and at least one alignment surface (60) in cooperation with a mating surface to rotationally position the drive adapter within the socket adapter at a selected circumferential position. The pump/motor may be reliably assembled in the field while maintaining precise axial and rotational positioning of the rotor sections.
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