4. Rotary shafts, gudgeons, housings, and flexible couplings for ro
  5. Coupling accommodates drive between members having...
  6. Coupling transmits torque via radially directed pin

Billy J. Roberts

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Assembly and floatation method for drilling drivepipe

Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Reexamination Certificate

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Assembly and method for jarring a drilling drive pipe into...

Boring or penetrating the earth – Boring a submerged formation
Reexamination Certificate

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Constant velocity universal joint assembly for downhole motor

Rotary shafts – gudgeons – housings – and flexible couplings for ro – Coupling accommodates drive between members having... – Coupling transmits torque via radially directed pin
Patent

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Hydraulic jar

Boring or penetrating the earth – Below-ground impact members – Fluid-operated
Patent

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Hydraulic jar

Wells – With jar means for releasing stuck part
Patent

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Profile ID: LFUS-PAI-P-320249

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