4. Bearings
  5. Rotary bearing
  6. Antifriction bearing

James G. Dennis

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Downhole motor fluid flow restrictor

Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type
Patent

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Method of distributing load among stacked bearings

Bearings – Rotary bearing – Antifriction bearing
Patent

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Quick release downhole motor coupling

Joints and connections – Interfitted members with external bridging piece
Patent

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Profile ID: LFUS-PAI-P-743788

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