LandOfFree - US Patents - Listing for Valves and valve actuation,Fluid actuated or retarded

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Oil and gas well safety valve

Valves and valve actuation – Fluid actuated or retarded – Dashpot or fluid controlled retarder or timer

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Oil well safety valve for use with drill pipe

Valves and valve actuation – Fluid actuated or retarded – With mechanical movement between actuator and valve

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Oil well safety valve for use with drill pipe

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

On-off valves for high pressure fluids

Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Operating device for a cylindrical gate

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Operating oil introduction type electromagnetic valve

Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Outlet valve

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

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Outlet valve

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

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Outwardly opening, seat-sealed, force balanced, hydraulic...

Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

Oval shaped valve with balancing pilot piston

Valves and valve actuation – Fluid actuated or retarded – With mechanical movement between actuator and valve

Patent

[ 0.00 ] – not rated yet Voters 0 Comments 0

Overpressure generator and valve

Valves and valve actuation – Fluid actuated or retarded – Flexible wall expansible chamber reciprocating valve actuator

Reexamination Certificate

[ 0.00 ] – not rated yet Voters 0 Comments 0

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