4. Valves and valve actuation
  5. Blow-out preventers
  6. Radial reciprocating ram

Denzal Wayne Van Winkle

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Actuator with free-floating piston for a blowout preventer and t

Motors: expansible chamber type – With correlated control of motive fluid and locking means
Patent

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Bi-directional sealing ram

Valves and valve actuation – Blow-out preventers – Radial reciprocating ram
Patent

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Buckle or clasp

Buckles – buttons – clasps – etc. – Buckles – Pivoted lever
Reexamination Certificate

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Method and apparatus for replacing a packer element

Wells – Submerged well – Connection or disconnection of submerged members remotely...
Patent

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Method and apparatus for replacing a packer element

Valves and valve actuation – Blow-out preventers
Patent

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Profile ID: LFUS-PAI-P-1151416

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