4. Valves and valve actuation
  5. Reciprocating valve
  6. Gate

Randle E. Ford

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Drill pipe float valve and method of manufacture

Wells – Valves – closures or changeable restrictors – Fluid operated
Patent

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Drill pipe float valve and method of manufacture

Wells – Valves – closures or changeable restrictors – Fluid operated
Patent

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Gate valve with dual seal rings on a unitary seat ring

Valves and valve actuation – Reciprocating valve – Gate
Patent

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Wellbore packer with shearable anti-rotation locking member

Wells – Packers or plugs – Expanded by confined fluid from central chamber – pump or...
Patent

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Profile ID: LFUS-PAI-P-1123286

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