4. Boring or penetrating the earth
  5. Means traveling with tool to constrain tool to bore along...
  6. Sectional guide or shaft having means to lock sections in...

Douglas Wenzel

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Adjustable bent housing

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Sectional guide or shaft having means to lock sections in...
Patent

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Sealed downhole motor drive shaft universal joint assembly

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

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Profile ID: LFUS-PAI-P-1652214

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