4. Valves and valve actuation
  5. Fluid actuated or retarded
  6. Piston type expansible chamber reciprocating valve actuator

Louis L. Lutich

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Demolition tool

Tool driving or impacting – Drive controlled by relative axial movement of tool – Drive motor controlled
Patent

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Failsafe cutoff valve for oil and gas wells

Valves and valve actuation – Fluid actuated or retarded – Piston type expansible chamber reciprocating valve actuator
Patent

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Impact drilling tool having improved valving

Tool driving or impacting – Drive controlled by relative axial movement of tool – Drive motor controlled
Patent

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Portable vacuum storage unit and method for use

Cleaning and liquid contact with solids – Processes – Including use of vacuum – suction – or inert atmosphere
Reexamination Certificate

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Rock ditcher

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Floor-working
Patent

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Profile ID: LFUS-PAI-P-543658

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