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| Number | Title | Issue Date |
| 7357373 | Pilot-type two-port valve A two-port valve includes a valve part configured to open and close a valve seat in a liquid flow path connecting a first port and a second port by a valve member and a pilot-type valve driving mechanism to open and close the valve member through a rod. The rod pass... | 04/15/2008 |
| 7309058 | Flexible backseat seal for gate valve A gate valve has a body having a cavity and a stem passage extending from the cavity. A stem extends through the stem passage into the cavity for moving a gate in response to rotation of the stem. A conical backseat seal surface is formed at a junction of the stem p... | 12/18/2007 |
| 7225827 | Insertion valve and installation method A valve assembly for insertion in a pipe containing fluid under pressure includes a valve body adapted to be assembled over the pipe and a valve-stopping mechanism that mounts on the valve body. The hollow valve body interior and an access opening in the valve body ... | 06/05/2007 |
| 7201361 | Gate valve having reduced friction Valve having a valve housing, a valve member slidable in the valve housing between open and closed positions, and a friction reducer to reduce friction between the valve member and the valve housing. The friction reducer comprises at least one guide shoe made of low... | 04/10/2007 |
| 7172172 | Valve packing removal device A valve having a valve packing removal device attached thereto is disclosed. The valve may include a valve plug reciprocally disposed within the valve housing and connected to a sliding stem. The packing may be provided about the valve stem to ensure or minimize lea... | 02/06/2007 |
| 7159846 | Slit valve for a semiconductor processing system A slit valve for a semiconductor processing apparatus, for fluidly sealing a passage connecting two chambers of the apparatus, such as a substrate reaction chamber and a region outside the reaction chamber. The slit valve comprises an actuator plate movable within a... | 01/09/2007 |
| 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 |
| 7147205 | Low energy high pressure miniature screw valve A low energy high pressure screw valve having a valve body having an upper portion and a lower portion, said lower portion of said valve body defining an inlet flow passage and an outlet flow passage traversing said valve body to a valve seat, said upper portion of ... | 12/12/2006 |
| 7104522 | Coking-resistant shaft/bushing mechanism for an exhaust gas recirculation valve An exhaust gas recirculation valve assembly including a bushing and pintle shaft sub-assembly having a pintle shaft supported by a sleeve bushing, the contact area between the shaft and bushing being reduced such that coking deposits that form on the remaining conta... | 09/12/2006 |
| 7025329 | Needle valve for flow control A needle valve assembly for providing fluid flow control includes a motor; an internally threaded valve body; and an externally threaded plunger threadably engaged with the internally threaded valve body and rotatably and reciprocally driven by the motor, wherein th... | 04/11/2006 |
| 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 |
| 6997437 | Valve for dynamic control of fuel flow rate in gas turbine power plant, power plant and components thereof employing such valve, and method of constructing such valve There is disclosed a valve comprising a valve stem threaded with a translator having a flow modulating region, in which rotation of the valve stem about its axis causes the translator to move axially relative to the valve stem. In one aspect, the threads on the tran... | 02/14/2006 |
| 6935616 | Balanced plug valve A balanced plug valve having substantially reduced shut-off force requirements due to an integral dual seating arrangement of the valve plug within a valve housing having slanted inlet and outlet ports and wherein the inlet port forms an elliptical opening for fluid... | 08/30/2005 |
| 6883776 | Slit valve for a semiconductor processing system A slit valve for a semiconductor processing apparatus, for fluidly sealing a passage connecting two chambers of the apparatus, such as a substrate reaction chamber and a region outside the reaction chamber. The slit valve comprises an actuator plate movable within a... | 04/26/2005 |
| 6832750 | Back seating valve with service port A back seating valve includes a valve body enclosing a valve plug with a threaded through-bore; and a valve element with a threaded valve stem and valve head. The valve plug and valve stem are initially preassembled, and then inserted into the valve body. The valve ... | 12/21/2004 |
| 6764063 | Valve seal assembly with bottom flange seal A valve stem seal assembly includes an elastomeric sealing member for sealing between a reciprocally moveable valve stem and an associated valve guide in an internal combustion engine. The assembly includes a cylindrical retainer that incorporates an end wall at a f... | 07/20/2004 |
| 6719272 | Valve and vacuum processing device with the valve The valve 10 includes a valve main body 11 having an opening 11A and forming a space which creates a part of a gas flow path, a first valve member 12, provided in the valve main body, for opening/closing the opening 11A, and a driv... | 04/13/2004 |
| 6702251 | Control valve in variable displacement compressor and method of manufacturing the same A control valve for a variable displacement compressor is provided. A retainer cylinder in the control valve includes a first cylindrical member made of non-magnetic material and a second cylindrical member having a bottom portion made of magnetic materia... | 03/09/2004 |
| 6601823 | Sanitary drain valve design A valve for sampling a process from a tank or conduit includes an internal cavity in communication with at least one inlet and an outlet. A valve actuating rod includes a sealing tip attached to one end thereof. The valve actuating rod is movable to open ... | 08/05/2003 |
| 6439435 | Device and method for deodorizing shoes A deodorizer device for deodorizing shoes, includes a container containing deodorizer material, and a dispenser assembly at one end of the container for dispensing deodorizer material. The dispenser assembly includes a feed tube having one end located wit... | 08/27/2002 |
| 6092786 | Gate valve Provided is a gate valve for opening and closing an aperture formed in a body of a chamber and designed so that an object is loaded into or unloaded from the chamber, comprising a lift mechanism provided on a side portion of the chamber body, a supporting... | 07/25/2000 |
| 5967166 | Sealing assembly and method A sealing assembly is provided for securing an opening in a seat having a seating surface. Typically, the sealing assembly of the present invention adapted for use with, for example, a dual-chamber orifice fitting. The sealing assembly comprises a drive, ... | 10/19/1999 |
| 5915669 | Electromagnetic valve having a valve body with a sealing bead An electromagnetic valve particularly suited for use in an internal combustion engine includes a housing, a coil, a magnet armature guided within the coil, and a spring-actuated valve body interacting via a tappet with the magnet armature. The valve body ... | 06/29/1999 |
| 5908046 | Back seat rising stem gate valve A back seat rising stem gate valve has a valve body with a flow passageway through it and an open top, a gate that is vertically positioned to open and close the passageway, a stem extending upwardly from the valve body, the lower end of the stem being at... | 06/01/1999 |
| 5829734 | Shut-off valve A shut-off valve (1, 101) including a valve housing (2, 102) having a flow passageway (3, 103); a shut-off member (22, 122) displaceably arranged in the housing between an open position and a closed position of the valve flow passageway through an actuato... | 11/03/1998 |
| 5743288 | Valve having provision for replacing stem packing while the valve is under pressure A valve, having provision for replacing stem packing while the valve is under pressure, has a valve body with a flow passageway through it, a gate that is vertically positioned to open and close the passageway, a stem extending upwardly from the valve bod... | 04/28/1998 |
| 5732731 | Secondary seal bypass valve for gate valves In combination with a gate valve comprising a valve body having an internal cavity extending between an inlet port and an outlet port, a bonnet mounted to the valve body and having an internal passageway in communication with the cavity, a valve stem rota... | 03/31/1998 |
| 5730419 | Dual backseat valve assembly The present invention is directed to a dual backseat valve assembly comprising a valve body having an interior valve chamber and a generally horizontal flow passage; a valve gate adapted to reciprocate vertically within said valve chamber; a valve stem ad... | 03/24/1998 |
| 5598902 | Automatic lubricator An automatic lubricator which includes a cylindrical oil container, a piston reciprocated in the oil container, a container holder covered on the bottom open end of the oil container and having an oil inlet and an oil outlet, two reversed coil springs con... | 02/04/1997 |
| 5454547 | Sleeved seal for a valve The present invention provides a sleeved seal, as well as the method of installing and machining said sleeved seal. The seal comprises a unitary configuration of a backseat and a sleeve for a stuffing box area, comprising a valve stem bore in communicatio... | 10/03/1995 |
| 5435520 | Backseat assembly for an expanding gate valve A backseat assembly for an expanding gate valve includes a sealing member slidingly disposed about the stem and a biasing member biasing the sealing member away from the gate. Upon the gate and segment traveling to the open position of the valve, the segm... | 07/25/1995 |
| 5312087 | Low torque back seating stem for gate valve A gate valve adapted for stem back seating has a stem and bonnet assembly with a rotatable bearing ring to which the stem is releasably fixed during normal gate opening and closing operations. During back seating, the stem is released from the bearing rin... | 05/17/1994 |
| 5305788 | Stream selector for process analyzer A stream selector for a process analyzer. The stream selector includes a valve module having two block valves and a bleed valve. In a first mode, the block valves are closed and the bleed valve is open. In a second mode, the block valves are open and the ... | 04/26/1994 |
| 5249775 | Closure A stop valve assembly comprises two closure members one for stopping substantive gas or liquid flow and the other to prevent leakage along a spindle section 33. Each member possesses a closure element in the form of a rigid disc-like member (9 or 34) of a... | 10/05/1993 |
| 5238252 | Shut-off fittings with a sealing device A shut-off fitting with a sealing device consisting of a packing casing and a packing gland for the actuation element of the valve has the packing casing including bores that hold the sealing elements. The packing has at least one grooved metal ring with ... | 08/24/1993 |
| 5221063 | Selective double backseat for valve stems The invention is directed to a valve stem double backseat seal wherein the rising stem first engages a non-metallic radial seal and then axially engages the metal backseat shoulder of the valve bonnet.... | 06/22/1993 |
| 5127629 | Valve stem flex lip backseat A metal-to-metal backseating system for fluid flow control valves, comprising a flexible annular backseat element extending radially from a valve stem or closure element to sealingly engage a valve bonnet surface, and an annular backup for the backseat el... | 07/07/1992 |
| 5074519 | Fail-close hydraulically actuated control choke A fail-close hydraulically actuated control choke includes a choke with inlet and outlet flow passages intersecting in a cylindrical flow chamber. A reverse acting trim configuration which utilizes downstream pressure to assist in closing includes a flow ... | 12/24/1991 |
| 5056759 | Protected bellows for valve A valve apparatus comprises a valve body having a fluid passage therein including a valve seat. A valve member, having a head and stem, is movable in the body between valve open and valve closed positions determined by the proximity of its head to the val... | 10/15/1991 |
| 4991619 | High purity gas delivery control assembly The invention relates to a high purity gas delivery control assembly (100) having straight through gas flow. The bellows (118) which operates a gas flow interruption means (114) is isolated during gas flow and dead volumes are reduced to a minimum. This p... | 02/12/1991 |
