LandOfFree - US Patents - Listing for Valves and valve actuation,With means to increase head and seat contact pressure

Valves and valve actuation – With means to increase head and seat contact pressure – Fluid pressure

Radially expandable tubular valve seal

Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction

Reciprocating expandable gate valve

Valves and valve actuation – With means to increase head and seat contact pressure – Seat pressed to valve

Redundant testable valve apparatus

Valves and valve actuation – With means to increase head and seat contact pressure – Seat pressed to valve

Regulating slide valve

Valves and valve actuation – With means to increase head and seat contact pressure – Gate valve

Regulating vacuum valve

Valves and valve actuation – With means to increase head and seat contact pressure – Piston

Removable fluid seal and method

Valves and valve actuation – With means to increase head and seat contact pressure – Seat pressed to valve

Retaining piece of a ball valve

Valves and valve actuation – With means to increase head and seat contact pressure – Spring

Retractable plug assembly

Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction

Retractable-gasket valve having two stiffnesses

Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction

Retracting ring seal valve

Valves and valve actuation – With means to increase head and seat contact pressure – Spring

Rotary air valve

Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction

Rotary barrel gate valve

Valves and valve actuation – With means to increase head and seat contact pressure – Seat pressed to valve

Rotary cock with generally spherical valve member

Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction

Rotary disk valve

Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction

Rotary flow control apparatus

Valves and valve actuation – With means to increase head and seat contact pressure – Seat pressed to valve

Rotary gate valve gasket and process for its manufacture

Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction

Rotary plug valve

Valves and valve actuation – With means to increase head and seat contact pressure – Fluid pressure

Rotary plug valve with seat seal

Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction

Rotary valve