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Class 137/625.38 - With internal flow passage


Subclass of Class 137 - Fluid handling
Definition: Subject matter wherein the piston provides an internal flow
No. of patents: 106
Last issue date: 04/12/2011


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NumberTitleIssue Date
7921877Spool valve and method
A valve (200) for routing a fluid includes a housing (220) having an inlet (222) and at least one outlet port (224). A valve member (218) is located in the housing (220). The valve (218) member has a wall (232)...
04/12/2011
7849876Valve assembly with sealing force
A valve assembly (10) comprising a valve member (14) having surfaces (70, 72, 74, 76, 78) radially sized and axially situated to provide an axial sealing force to insure leakfree operation. When the valve member (14) is in a supply positi...
12/14/2010
7832426Parabolic bonnet for three-way valve
A fluid control device including a valve body, a control member, and a one-piece bonnet. The valve body defines a flow path for a fluid. The control member is disposed in the valve body and adapted for displacement between at least a first position and a second posi...
11/16/2010
7347219Meter bar and metering system
A meter bar and meter bar system are provided for directing a fluid. The meter bar includes a first portion, a second portion and a bypass path extending between the first and second portions. The first portion includes a first service port, a first meter port and a...
03/25/2008
7264421Door and valve assembly for a pneumatic transmission system
A door and valve assembly for a pneumatic transmission system including a port configured to permit ambient air to flow into a pneumatic transmission conduit, a body having a seal and configured to open and close the port and an end of the transmission conduit, and ...
09/04/2007
7195034Fluid trim apparatus and method
A noise reducing apparatus and method for handling of fluid comprises a plurality of discs stacked on one another, each disc having a radially inner periphery and a radially outer periphery, and a plurality of fluid flow channels defined on at least some of the disc...
03/27/2007
7159617Balanced globe valve
An essentially fully balanced plug valve is presented in which the flow control contour is interior to the moving member. The sealing edge of the moving member is at the exterior surface relative to the interior contour. This sealing edge is formed by use of matchin...
01/09/2007
7152628Anti-cavitation valve assembly
A valve assembly for reducing cavitation includes a seat disposed within a valve housing intermediate a fluid inlet and outlet thereof. A disc guide is associated with the seat so as to be slidably moveable relative to the seat. The seat includes a wall defining an ...
12/26/2006
7146997Regulator with flow diffuser
A flow-through pressure regulator having a housing, and a divider. The housing includes an inlet and an outlet disposed along a longitudinal axis. The divider separates the housing into a first chamber and a second chamber, and includes a seat, a diaphragm, a retain...
12/12/2006
7028712Skirt guided globe valve
A skirt guided control valve provides streamlined flow and minimum resistance to flow in flow up and flow down conditions when the valve is open. The skirt guided control valve has a fluid inlet, a fluid outlet, a passageway disposed between the fluid inlet and flui...
04/18/2006
7025899Concentrated solutions of oxime metal extractants and method of formulating extractant compositions therefrom
The preparation of concentrated solutions of oxime metal extractants, such as aldoximes and ketoximes, or mixtures of aldoxime and ketoxime, and the use thereof in formulating or preparing extraction reagent compositions for use in an extractant organic phase in a p...
04/11/2006
7017608Balanced globe valve
An essentially fully balanced plug valve is presented in which the flow control contour is interior to the moving member. The sealing edge of the moving member is at the exterior surface relative to the interior contour. This sealing edge is formed by use of matchin...
03/28/2006
7013919Throttle device for high fluid pressures
A throttle device comprises a tubular outer sleeve having a plurality of outer sleeve circumferential grooves formed on an outer sleeve inner surface and intersecting a plurality of outer sleeve axial grooves formed on an outer sleeve outer surface to form outer sle...
03/21/2006
6997211Multiple material valve plug for high temperature operation
A valve assembly with a multiple-component valve plug is disclosed. The use of multiple materials in the construction of the valve plug provides different rates of thermal expansion in the axial and radial directions thereby enabling the valve plug to have thermal e...
02/14/2006
6973941Control valve with low noise and enhanced flow characteristics
A control valve that reduces noise and controls flow includes a slotted cylindrical skirt and/or a tapered metal ring. The metal ring has a tapered external surface for engaging a matching tapered bore within a valve housing. One embodiment is directed to a control ...
12/13/2005
6968816Oil flow control valve
In an oil flow control valve (OCV) according to the present invention, a first volume varying chamber is adapted to communicate with a second volume varying chamber through a second plunger breathing path, and the second volume varying chamber is adapted to communic...
11/29/2005
6935369High pressure oxygen valve
A high pressure valve for oxygen service comprises a valve body (10) with a gas passage (12) and a valve seat (18) associated with the gas passage (12). An obturation unit (22) is movable between a first position, wherein it is spa...
08/30/2005
6935371High capacity globe valve
A high flow globe valve with a body defining an interior cavity in communication with a first and second fluid passages. A tubular throttling cage is offset in the cavity away from the second fluid passage and has an open end in communication with the first fluid pa...
08/30/2005
6929241Hydraulic valve and a liquid flow system
This invention relates to a hydraulic valve (10) and an interconnected hydraulic valve system, (10, 12). Two coaxially disposed pipes (14, 20) are positioned vertically to form an annular space (11) there between. A flange (22) pro...
08/16/2005
6877964Multifunction microfluidics device
Apparatus for inducing, impeding, selectively filtering or otherwise effecting fluid flow in microfluidics applications. Opposing mesh layers are placed into relative motion by a variety of motive forces. Fluid between the opposing mesh layers is compressed so as to...
04/12/2005
6695578Bleed valve system for a gas turbine engine
A bleed valve assembly includes a valve poppet having a bleed portion and a base portion separated by a radially extending flange. The radially extending flange is located about the perimeter of the valve poppet to engage the valve seat on one side and re...
02/24/2004
6527194Flow control damper
A damper including a pair of damper members movable with respect to each other is disclosed. Each damper member has at least one wall correspondingly inclined to an axis of the damper. The inclined walls are relatively movable between open and closed posi...
03/04/2003
6394135Balanced plug valve with contour wall
There is a balanced plug valve with a contour shaped wall. The contour shaped wall forms a gap with an edge of a balanced plug. Fluid is able to flow through an input port, through the balanced plug, through the gap, and out an output port. The shape of t...
05/28/2002
6206021Sleeve valve with clean out section
A sleeve valve comprises a sleeve and a gate. The sleeve includes an intake, a discharge nozzle section, and a clean-out section. The discharge nozzle section includes a plurality of nozzles. The sleeve is adapted for fluid flow from the intake through a ...
03/27/2001
6192982System for individual inflation and deflation of borehole packers
A system for individually controlling the inflation and deflation of individual packers mounted on a casing is disclosed. The system includes a packer valve (36) mounted on the casing (24). The valve is in fluid communication with one of the packers (28)....
02/27/2001
6095192Spool valve for fluid control
A spool valve is provided with a stem portion that defines a fluid passageway formed by either (a) a single central support having a non-cylindrical curved surface shaped hydrodynamically, or (b) only a pair of sidewalls with, preferably, interior surface...
08/01/2000
6073736Valve assembly for a suspension system for a wheeled vehicle
A active, hydraulic suspension system for a wheeled vehicle is disclosed. The system utilizes an on-board damper controller, a damper having a pair of telescoping tubes and a motor-adjusted hydraulic channel, a position and direction sensor to achieve com...
06/13/2000
6047735High speed solenoid valve
A solenoid-operated fluid switching valve is described with a movable valve member and a stationary member; the movable member containing at least 2 valve elements that seat in the closed position against valve seating elements, the valve and valve seatin...
04/11/2000
5887621On/off bidirectional valve
A bidirectional on/off spool valve has circumferentially-extending through-slots in a spool which are axially alignable with circumferentially-extending grooves in the main bore. The slots and grooves create a flow path through the valve which minimizes B...
03/30/1999
5785086Valve assembly for metered fluid flow
A valve assembly for a metered fluid flow such as gas to a facility for utilizing the fluid. The valve assembly includes a housing having a bore. The bore has a first inlet opening connected to a source of fluid and a first outlet opening connected to a m...
07/28/1998
5769123Cylinder actuated descale valve
A valve to control fluid of high volume and pressure comprising a continuously balanced hollow plunger disposed within an annularly enlarged chamber that controls fluid flow by moving radial slots and ports in its peripheral wall back and forth across sea...
06/23/1998
5647575Volumetric shaft/valve
A valve which may be used with a pump which includes a housing having an interior cavity therein with an inlet and an outlet leading through the housing into the cavity. A resilient sheet of material with an aperture formed therein is disposed in the cavi...
07/15/1997
5615708Flow control valve with non-plugging multi-stage valve trim
A fluid control valve suitable for pressure reducing service. A valve is provided with a fixed cage member containing an internal passageway communicating with a cage inlet and outlet. A movable valve plug is slidably mounted within the cage member and co...
04/01/1997
5590683Compensating relief valve
The present invention shows a cartridge-type, compensating relief valve for use in a manifold cavity is disclosed. The valve comprises a gland removably secured within the manifold cavity, and having a circular valve seat and a central cavity therethrough...
01/07/1997
5337784Flow control valve
An apparatus is provided for dispensing a beverage made from a mixture of drink concentrate and water. The apparatus includes a valve assembly for controlling the rate of water and drink concentrate flow. A first conduit delivers water from a water source...
08/16/1994
5333638Automatic recirculation valve
An automatic recirculation valve having an inlet, a main outlet, and a recirculation outlet. A main valve element responsive to the flow between the inlet and main outlet and a bypass element responsive to the main valve element regulates the fluid flow t...
08/02/1994
5261453Valve provided with sound-reducing means
A valve provided with sound-reducing means, which sound-reducing means comprise a porous member....
11/16/1993
5255704Leakproof hydraulic valve
A simplified two-piece, cartridge-type hydraulic valve provides increased valve seat area and improved hydrodynamics. The present valve is a plug-type valve in which the piston is integral with the valve stem, and the valve seat is inserted into the base ...
10/26/1993
5236014Trim for ANSI class V shut off of valves
The disclosed valve provides a seal between the valve plug and the valve body to substantially prevent leakage therebetween when the valve is in its closed position. The seal can be arranged for minimizing the net forces acting on the valve plug to close ...
08/17/1993
5209259Fluid distribution system having noise reduction mechanism
A fluid distribution system, such as a valve, comprises a housing having a chamber which has a plurality of acoustic modes. The acoustic modes are excited when fluid flows through the chamber. An inlet passage and an outlet passage are disposed in fluid c...
05/11/1993
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