LandOfFree - US Patents - Listing for Valves and valve actuation

Valves and valve actuation – Fluid actuated or retarded – Fluid link or column actuator

Auxiliary closing force for valves

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

Auxiliary controlled valve disposed in a drilling string

Valves and valve actuation – Electrically actuated valve – Remote or follow-up control system for electrical actuator

Auxiliary power system and apparatus

Valves and valve actuation – Lost motion between actuator and valve

Auxiliary spring assisted valve linkage

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

Axial actuator

Valves and valve actuation – Tube compressors – Fluid pressure actuated

Axial flow regulator improvements including restrictor

Valves and valve actuation – Electrically actuated valve – Including solenoid

Axial flow solenoid valve

Valves and valve actuation – Tube compressors – Fluid pressure actuated

Axial flow throttling valve

Valves and valve actuation – Tube compressors – Fluid pressure actuated

Axial flow valve

Valves and valve actuation – With correlated flow path – Valve operated by joining flow path sections

Axial force operated ball valve

Valves and valve actuation – With material guide or restrictor – Baffle or zigzag flow restrictor

Axial trim for dirty service valve

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

Axial valve

Valves and valve actuation – Valve actuator is inlet or outlet – Reciprocating spout

Axially actuated drain valve for pools and spas

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

Axially moveable plate valve

Valves and valve actuation – Permanent or constantly energized magnet actuator

Axially rotated valve actuation system

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

Back pressure control valve

Valves and valve actuation – Reciprocating valve – Actuator controlled stem seal

Back seating valve with service port

Valves and valve actuation – Mechanical movement actuator – Particularly packed or sealed

Back-seating of rotary valve stem

Valves and valve actuation – Mechanical movement actuator – Particularly packed or sealed

Back-up seal for diaphragm valve