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SURFACE MOTOR DIRECT-DRIVE SUCKER-ROD SCREW PUMP DEVICE

  • US 20140197767A1
  • Filed: 03/07/2014
  • Published: 07/17/2014
  • Est. Priority Date: 08/04/2006
  • Status: Active Grant
First Claim
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1. A direct drive motor for driving a polished rod connected to a screw pump in a well, the direct drive motor comprising:

  • an electric motor with a hollow shaft, the hollow shaft being sized to receive the polished rod; and

    a clamp for clamping the polished rod and supporting the polished rod within the hollow shaft.

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