Class 251/123 - Valve at point of greatest restriction

Subclass of Class 251 - Valves and valve actuation
Definition: Subject matter wherein the restrictor comprises a contracted
No. of patents: 33
Last issue date: 09/09/2008

Number	Title	Issue Date
7422028	Apparatus for controlling and metering fluid flow A device for metering and controlling fluid flow includes a variable orifice and is configured to use a pressure sensor. The device includes a fluid flow conduit having at least one planar inner wall that extends along a portion of the fluid flow conduit length, and...	09/09/2008
7340895	Turbocharger actuator A turbocharger actuator and method of calibrating for a variable nozzle turbocharger. Included are an actuator housing having a diaphragm connected across it, a piston, and a compression spring arranged to be generally centered in the actuator housing biasing the pi...	03/11/2008
7201188	Fluted reciprocating ball valve The device described herein is a valve suitable for the control or shut-off of fluid flow in a piping system. It comprises a valve housing having inlet and outlet ports and a cylindrical bore whose axis is slanted at about 90 degrees in relation to the axis connecti...	04/10/2007
7150299	Assembly and method for containing, receiving and storing fluids and for dispensing gas from a fluid control and gas delivery assembly having an integrated fluid flow restrictor A fluid control and gas delivery assembly and method for containing, receiving and storing hazardous fluids and for dispensing gas comprising a container, a fluid fill path, a gas dispensing path, a first shut-off valve, a pressure reducer, a fluid flow restrictor, ...	12/19/2006
7131451	Apparatus for controlling and metering fluid flow A device for metering and controlling fluid flow includes a variable orifice and is configured to use a pressure sensor. The device includes a fluid flow conduit having at least one planar inner wall that extends along a portion of the fluid flow conduit length, and...	11/07/2006
7013916	Sub-atmospheric gas delivery method and apparatus An apparatus for containing and delivering hazardous gases at sub-atmospheric pressure from a pressurized container is provided which includes a valve body in sealed communication with an outlet orifice of the pressurized container. The outlet orifice of the pressur...	03/21/2006
6951317	Vehicle, lightweight pneumatic pilot valve and related systems therefor A vehicle, such as a missile, with a pilot valve system controls the vehicle's thrust valves despite a hostile propellant gas environment. The pilot valve system can have one or more pilot valves. Using refractory elements, the pilot valve ball reciprocates between ...	10/04/2005
6817594	Grooved valve seat with inlay A valve seat includes a seat body with an inlay and at least one groove. The seat body has a passage which extends from a first opening to a second opening in the seat body. A channel is located in the seat body adjacent the first opening and extends around at least...	11/16/2004
6666433	Grooved valve seat with inlay A valve seat includes a seat body with an inlay and at least one groove. The seat body has a passage which extends from a first opening to a second opening in the seat body. A channel is located in the seat body adjacent the first opening and extends arou...	12/23/2003
6588725	Valve A settable control valve (13, 50, 113) has a closure member moveable within a passage-way (17, 71, 81A, 101, 117), there being at least one groove for fluid flow (25, 26, 44, 56, 57, 97, 98, 107, 108, 125, 126) in the wall of the passageway. The groove is...	07/08/2003
6511041	Planar-divergent valve insert A gas-lift valve includes a valve member having an inner wall defining a flow passage having a longitudinal axis, the valve member having a planar inlet end and an outlet end, the inner wall diverging from the inlet end to the outlet end so that the flow ...	01/28/2003
6430929	Turbocharger with integrated exhaust gas recirculation valve An Exhaust Gas Recirulation (EGR) valve is integrated onto a turbocharger by providing an EGR outlet in a flange in the volute of the turbine housing and a mating valve assembly extending from a mating flange with an elbow. The outlet direction of the elb...	08/13/2002
6367772	Volumetric efficiency enhancing throttle body A throttle apparatus having a throttle body with an air passageway extending therethrough, an axle rotatably mounted in the throttle body, a disk affixed centrally to the axle so as to pivot relative to a rotation of the axle, and a channel formed in a wa...	04/09/2002
6192925	Flow regulator for water pump A flow regulator for a water pump, working in conjunction with a water pump, having a pump, an inlet pipe, an outlet pipe with a water pressure, and a container. The flow regulator comprises: a main body, installed at the inlet pipe and having a passagewa...	02/27/2001
6168134	Exhaust gas recirculation valve with variable flow area A flow control valve having a controllable flow area which varies with the valve displacement. The flow control valve includes a poppet-type valve element mounted to reciprocate between a closed and open position in a valve cavity formed in a valve housin...	01/02/2001
6062535	Exhaust gas recirculation valve with variable flow area A flow control valve having a controllable flow area which varies with the valve displacement. The flow control valve includes a poppet-type valve element mounted to reciprocate between a closed and open position in a valve cavity formed in a valve housin...	05/16/2000
5822958	Sanitary fill tube and piston valve assembly for a pouch packaging machine A sanitary fill tube assembly includes an oval fill tube connected between an oval inlet tube and an oval spreader having a hollow interior with a piston valve member reciprocally mounted therein. The piston valve member is actuated by a plunger rod and i...	10/20/1998
5540415	Steam isolation valve A steam isolation valve system for opening and closing a steam flow passage of a steam flow comprises a valve body, a valve disk accommodated in the valve body to be reciprocatingly movable for opening and closing the steam flow passage, and a drive mecha...	07/30/1996
5476246	Rotating actuator A rotating actuator comprising, eddying causes noise production that is to be avoided flat boundary faces formed at a throttle opening, and a flat boundary face that is formed at an outlet opening. Streamlined transitions with one convex and one concave r...	12/19/1995
5464039	Fluid flowmeter-controller A flowmeter controller, which includes emitter sensor pairs coaxial to a rectilinear measurement tube which has a cross-section uniformly decreasing from its inlet, this latter being of annular radial extension symmetrical about the tube axis, and being p...	11/07/1995
5295655	Flush valve flow control ring A toilet device flush valve has a body with an inlet and an outlet and a valve seat in the body positioned therebetween. There is a movable diaphragm which closes upon the valve seat to control flow between the inlet and the outlet. A piston is attached t...	03/22/1994
5150877	Flush valve refill ring A flush valve body has a passage which connects the inlet and outlet. There is a valve seat at one end of the passage and a diaphragm is positioned to control the flow of water through the passage and to close upon the seat. A guide member is attached to ...	09/29/1992
5013007	Flush valve refill ring A refill ring for use in a diaphragm-type flush valve is mounted upon the guide member of the diaphragm assembly. The refill ring has an outer diameter approximating the inner diameter of the flush valve passage adjacent the diaphragm seat. The refill rin...	05/07/1991
4742987	Valve A valve having a flow path in the form of a Venturi tube having a throttle and flow path sections extending and flaring from the opposite sides of the throttle to an inlet and outlet, respectively, and a cylindrical valve plug provided at the throttle and...	05/10/1988
4617964	Tight shut-off valve with flow control A flow control apparatus for use primarily in plug-type valves provides means for continuously varying the flow rate of fluid through the valve while using the same operator that is used to control the open and closed position of the valve. The invention ...	10/21/1986
4610424	Shut-off valve A shut-off valve has a sealing cone which in a closed position of the valve abuts against a conical sealing seat and is formed as a part of a cylindrical throttling piston, a sealing surface of the sealing seat cooperates at its one end with a cylindrical...	09/09/1986
4565212	Device for the step-wise pressure release on the expansion of, in particular hot, gases The invention relates to a device for the step-wise pressure release on the expansion of, in particular hot, gases with highly different volume streams. In a device of this type, reaching or even exceeding the speed of sound is to be safely prevented. Thi...	01/21/1986
4549718	Low noise valve A low-noise valve has a body with a fluid inlet to receive pressurized fluid, an outlet and a fluid passageway extending between the inlet and outlet. Located in the passageway are a number of spaced throats. The valve also includes a movable stem with a ...	10/29/1985
4291859	Plug-type valve An improved bidirectional plug valve with increased Cv or decreased insertion pressure loss is provided. The improvements reside in a unique combination of surprising structural parameters including an increase in the diffuser-to-dump transitio...	09/29/1981
4275763	Double-slide valve Disclosed is a double-slide valve for controlling a stream of fluid entrained particulate material. The double-slide valve comprises a valve body forming a closed chamber having an inlet opening, an outlet opening, and a pair of valve stem openings. Withi...	06/30/1981
3979105	Valve with improved flow passage A flow passage providing improved pressure recovery in a valve having an axially movable closure element which includes the provision of an annular diffuser flow passage from the seat port to the periphery of the closure member to reduce the fluid pressur...	09/07/1976
3955794	Hermetically sealed valve with fixed diffuser A hermetically sealed valve includes a valve body having an annular seat adjacent the valve inlet with a frusto-conical surface diverging outwardly therefrom toward the valve outlet and a fixed diffuser assembly including a fixed disc guide and a slidable...	05/11/1976
3937240	Check valve A check valve adapted for mounting between the faces of a pair of pipe flanges having flow passages of equal diameters and joined by bolts circumferentially spaced about the flanges. A valve body having a cylindrical flow passage therethrough is formed wi...	02/10/1976

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Class 251/123 - Valve at point of greatest restriction