4. Valves and valve actuation
  5. Rotary valves

Robert K. Michael

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Apparatus and method for creating pulsating fluid flow, and...

Fluid handling – Flow affected by fluid contact – energy field or coanda effect – Device including passages having v over t configuration
Reexamination Certificate

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Apparatus and method for creating pulsating fluid flow, and...

Fluid handling – Flow affected by fluid contact – energy field or coanda effect – Device including passages having v over t configuration
Reexamination Certificate

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Low power miniature hydraulic actuator

Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Reexamination Certificate

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Method of progressively gravel packing a zone

Wells – Processes – Graveling or filter forming
Reexamination Certificate

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Surface valve with pressure energized seal and gear actuation

Valves and valve actuation – Rotary valves
Patent

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Profile ID: LFUS-PAI-P-913759

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