| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 251314000 | Seat or interface seal | 30 |
| 20090121172 | RELIEF VALVE IN A TURBOMACHINE - Relief valve in a turbomachine, comprising a gate ( | 05-14-2009 |
| 20090184277 | Valve - There is a closure member for rotating or reciprocating movement between upstream and downstream passageways of a valve. A device, which consists of two or more elongated tubes whose cross sections form up into one or more files in moving direction of the closure member to divide the upstream passageway into many channels capable of leading the fluid to flow through, is disposed in the upstream passageway of the valve upstream of the closure member, consequently the upstream surface of the closure member can respectively open or close each channel in sequence while the closure member is rotating or reciprocating in the valve. | 07-23-2009 |
| 20100001220 | ROTARY FACE SEAL WITH ANTI-CROWNING FEATURES - A typical rotary face seal employs a seal ring rotating relative to a sealing surface and also employs means to urge the seal ring towards the sealing surface in order to effect a seal. The seal ring may itself comprise a seal face bonded to a backing ring. In certain applications, the seal face may deform significantly as a result of the temperature variations experienced and an undesirable crowning of the seal face may occur. Such crowning may be reduced by employing an improved seal ring with anti-crowning features in which the thickness of an edge of the seal face is different from that in the middle of the seal face, or in which a relief slot is employed in the seal face. The improved seal ring is particularly suited for rotary face seals used in a rotary valve in a rotary gas separation device. | 01-07-2010 |
| 20110079743 | ROTARY VALVE - A rotary valve includes a main body provided with a valve chamber for receiving a plate valve, formed with an annular neck and bored with an intermediate hole extending downward to the valve chamber for positioning a valve rod, which is disposed in the intermediate hole when the main body is being shaped. A seal washer has its outer annular side provided with a serrated surface so that, when shaped, the main body can be combined with the serrated surface to let the seal washer covered by the inner annular wall of the valve chamber. The seal washer has an inner annular side symmetrically formed with an upper and a lower small flat surface respectively matching with an upper and a lower flat surface of the valve plate, having an upper and a lower side respectively bored with a hole for a valve rod to be inserted therein and fixed with the valve plate. | 04-07-2011 |
| 20110127456 | ROTATING VALVE ASSEMBLY FOR HIGH TEMPERATURE AND HIGH PRESSURE OPERATION - A rotating valve assembly includes an inner cup having at least one inlet port; an outer cup having at least one inlet port, the outer cup rotatably mounted concentric with the inner cup by a bearing arrangement; and a cooling system located between the inner cup and the bearing arrangement for providing a thermal barrier between the inner cup and the bearing arrangement. The valve assembly also includes a labyrinth sealing arrangement located around the at least one inlet port of one of the inner and outer cups for preventing leakage of pressure waves generated by detonations or quasi-detonations within a combustion chamber of the inner cup. | 06-02-2011 |
| 20110204273 | Valve for Wellbore Applications - The present invention provides a robust, durable and reliable cylindrical valve having closable, radially extending openings for use in cementing, injection, including hydraulic fracturing, and production in wells having high pressures and large pressure differences. The valve may comprise scraping rings in order to remove deposits and the like when it is to be closed after use. Magnets or other suitable means indicates whether the valve is in an open or closed position. | 08-25-2011 |
| 20110233438 | BALL VALVE SEALING RING - A ball valve sealing ring is provided for sealing between a ball valve member a valve body. The sealing ring may comprise a ring body having a ball valve member-contacting surface and one or more valve body-contacting shoulders for contacting the valve seat. The sealing ring may comprise a resilient ring core for providing bending resistance. The resilient ring core may be at least partially conical and may have a curved cross-section with a convex side oriented towards the member-contacting surface. The cross section may be of a geometry corresponding to the outer contour of the ring body or shoulders and may have ends bent towards the member-contacting surface. The ring core may also have a plurality of apertures spaced about its circumference. The sealing ring may be elastically deflected upon contact with the valve member. Also provided is a ball valve seating arrangement comprising the aforementioned sealing ring. | 09-29-2011 |
| 20110272613 | VALVE ELEMENT MECHANISM FOR EXHAUST GAS CIRCULATION VALVE - A valve element mechanism for an exhaust gas circulation valve has: a primary eccentricity A causing a center O of a support shaft | 11-10-2011 |
| 20120018657 | SEALING ARRANGEMENT IN ROTATING CONTROL VALVE OF PRESSURE FLUID-OPERATED PERCUSSION DEVICE - The invention relates to a sealing arrangement in a rotating control valve of a pressure fluid-operated percussion device, to which percussion device a tool is mountable movable in its longitudinal direction, the percussion device containing a work chamber and a transmission piston mounted movable to compress the tool suddenly to generate a stress pulse to the tool, inlet and outlet channels for conducting pressure fluid to the percussion device and away from it, and a control valve having a rotating switch member with channels to connect inlet and outlet channels through the channels of the switch member to alternately conduct the pressure fluid through the channels to the work chamber and, correspondingly, away from the work chamber, and in the inlet channel of the pressure fluid at the switch member side end thereof at least one sealing sleeve for the purpose of sealing the inlet channel to the switch member. In the arrangement, the sealing sleeve is mounted obliquely to the surface of the switch member and the switch member side surface of the sealing sleeve is essentially in the shape of the switch member surface. | 01-26-2012 |
| 20120061604 | CONTROL OF ROTARY VALVE OPERATION FOR REDUCING WEAR - Aspects of the invention are associated with the discovery of methods for operating rotary valves that reduce or minimize wear of the seal sheet, which is often the limiting factor in overall processing capability of the valve. The control of certain parameters associated with the rotary valve operation, and particularly the seating pressure of the seal sheet (e.g., the dome pressure), can extend the useful life of the seal sheet, thereby avoiding excessive maintenance and downtime costs. In preferred embodiments, control is on a real time basis. | 03-15-2012 |
| 20120074341 | PASSIVE VALVE FOR MULTIVALVE DEVICES AND A MULTIVALVE DEVICE, IN PARTICULAR HAVING SUCH A PASSIVE VALVE - The invention relates to a passive valve for multi-valve devices for sealing a container or a line. According to one aspect of the invention, the passive valve is free of bearing supports which protrude in a positive sense out of the passive valve. The invention also relates to a multi-valve device for contamination-free connection of two containers or two lines with partial valves that can be rotated about a single axis. According to this aspect of the invention, at least three partial valves, which are arranged essentially parallel to one another and can be put under tension so they can be sealed with respect to their surroundings, can be rotated about the single shared axis. | 03-29-2012 |
| 20120080630 | FLOW PATH OPENING/CLOSING APPARATUS - There is provided a flow path opening/closing apparatus that can enhance airtightness so as to be capable of being used for a high-speed processing under a high pressure, while keeping advantages, which are a non-contact valve element, high exhausting capability, and high response speed. A butterfly valve includes a body having a flow path through which a fluid flows; and a valve element that can rotate in the flow path about a rotation axis vertical to the flow path, wherein a seal length extending wall for extending a seal length in a direction of the flow path at a gap, which is formed between the body and the valve element when the valve element is fully closed, is formed to project along an edge of the valve element. | 04-05-2012 |
| 20120112110 | BALL VALVE SEAT SEAL - In an embodiment of the present invention, a valve seal for a ball valve includes a ball configured to mate with a tail piece, an annular seat ring to facilitate the mating of the ball with the tail piece, the seat ring having an angled wall having a first groove for accommodating a first seal and a second groove for accommodating a second seal, the first seal having a different Young's modulus from the second seal. | 05-10-2012 |
| 20120168660 | TRUNNION BALL VALVE WITH INTERCHANGEABLE AND REPLACEABLE SEAT INSERT - The disclosed embodiments include systems and methods for retaining a seat insert of a ball valve in place within a seat ring of the ball valve. In particular, the seat insert is an annular ring having a tapered section on an outer wall of the annular ring. The tapered section of the seat insert is configured to mate with a shoulder in an outer surface of a profiled groove of the seat ring. The seat insert snaps into the profiled groove with the shoulder, thereby preventing axial movement of the seat insert with respect to the profiled groove of the seat ring. In addition, a locking ring also fits within the profiled groove of the seat ring to prevent axial and radial movement of the seat insert with respect to the profiled groove of the seat ring. More specifically, once the seat insert has been snapped into place within the profiled groove of the seat ring, the locking ring is also inserted into the profiled groove of the seat ring. | 07-05-2012 |
| 20120326069 | STEP TYPE VALVE | 12-27-2012 |
| 20130015383 | Bellows Energized Seal Assembly for a Rotary Control Valve - A bellows energized seal assembly includes a seal body, a main seal that is axially slidable within the seal body, and a bellows connected to the seal body and the main seal. The bellows both biases the main seal and provides a seal between the seal body and the main seal. | 01-17-2013 |
| 20130062547 | AIR VALVE SEALING PLUG - A seal for an air valve having a valve shaft rotatably carried in a bore formed in a body and a valve head carried by the valve shaft to control air flow through an air passage as the valve shaft is rotated. The seal may include a pair of spaced apart sealing members adapted to engage the body within the air passage to seal a junction between the valve and air passage. The seal may also include an intermediate member between and interconnecting the sealing members, where the intermediate member is flexible to permit movement of at least a portion of the sealing members toward each other and the intermediate member is also resilient to yieldably bias the sealing members away from each other at least when the sealing members are displaced toward each other. | 03-14-2013 |
| 20130092860 | FLUID CONTROL VALVE - A fluid control valve includes: a valve housing having an inlet port and an outlet port; a drive source mounted on the valve housing; a valve shaft configured to be moved by the drive source; and a valve member mounted so as to extend radially with respect to an axial center of the valve shaft, wherein the valve member includes: a valve frame having a cylindrical portion configured to allow insertion of the valve shaft, and a seal member mounted on the extending portion and configured to be capable of coming into abutment with the valve seat, a portion of the valve shaft housed in the mounting portion is formed with a through hole in the direction orthogonal to the axial center, and a rotatable spherical body is arranged in the through hole, and the mounting portion is fixed to the spherical body by caulking. | 04-18-2013 |
| 20130299729 | SEAL RING ASSEMBLIES FOR USE WITH ROTARY VALVES - Seal ring assemblies for use with rotary valves and methods to manufacture the same are disclosed. A seal ring assembly is described that includes a ring-shaped seal to be fixed within the rotary valve, where the seal enables the sealing engagement of a control member with a flow control aperture. The seal is compressed between a first seal clamp and a second seal clamp by a compressive force maintained by a plurality of fasteners extending through the seal and fixed to the first and second seal clamps. | 11-14-2013 |
| 20140014867 | BALL VALVE GASKET STRUCTURE - A ball valve gasket structure includes a housing base having an accommodating area and a position limit area; a leakproof washer installed in the position limit area; a ring-shaped slide unit having a ring-shaped steel plate and a ring-shaped graphite plate installed in the accommodating area, and both top and bottom sides are ring-shaped steel plates of the slide unit, and the ring-shaped steel plate at the bottom side abuts the bottom of the accommodating area, and the other ring-shaped slide unit has an arc surface portion disposed at the internal periphery; and a cover coupled to the housing base for sealing the slide unit. The ball valve gasket structure can be used together with a ball valve to achieve the slide assisting effect, improving service life, and facilitating installation and disassembly. | 01-16-2014 |
| 20140166917 | SLEEVE SEAL ASSEMBLY AND ROTARY VALVE HAVING SLEEVE SEAL ASSEMBLY - A fluid flow control device includes a valve body, a bonnet, a control assembly, an internal recess, and a seal assembly. The valve body defines an inlet portion, an outlet portion, a bonnet opening, and a fluid flow path extending between the inlet portion and the outlet portion. The bonnet is disposed in the bonnet opening. The control assembly is at least partly supported by the bonnet, and includes a ball element disposed within the valve body and rotatable between an open position and a closed position. The internal recess is defined by the valve body downstream from the inlet portion and adjacent the bonnet opening. The seal assembly is disposed within the internal recess and includes a movable sleeve seal, a retaining device, a biasing element, and one or more sealing elements for preventing leakage between the sleeve seal and the retaining device and/or the valve body. | 06-19-2014 |
| 20140319399 | VALVE SEALS - Valve seals are described. An example seal for use in a valve includes a ring-shaped cartridge having a first portion, a second portion opposite the first portion, and a compressible sealing portion between the first and second portions. The first and second portions have respective first and second curved surfaces adjacent a sealing surface of the compressible sealing portion. The first and second curved surfaces enable a flow control member to compress the sealing portion prior to contacting the curved surfaces as the flow control member transitions to a closed position. | 10-30-2014 |
| 20150034855 | AIR MATTRESS DEVICE AND AIR DISCHARGE VALVE THEREOF - An air discharge valve comprises a pipe connection base, a rotary member, at least one seal member and a buffer member. The pipe connection base comprises at least one pipe member which comprises an orifice; the rotary member and the buffer member are both axially connected with the pipe connection base to rotate about a rotation axis relative to the pipe connection base; the rotary member comprises at least one operational part, and the at least one seal member is connected with the rotary member and corresponded to the orifice; the buffer member comprises at least one corresponding operational part, and a rotation buffering space is reserved between each corresponding operational part and each operational part. When the rotary member is at a first orientation relative to the pipe connection base, each seal member correspondingly seals and closes each orifice; when the rotary member is driven by the buffer member and rotated to a second orientation relative to the pipe connection base, each seal member is removed from each orifice so that air in each pipe member can be discharged from the corresponding orifice. | 02-05-2015 |
| 20150102251 | FLOATING BALL VALVE SEAL - A seal assembly is provided for a rotary ball valve an eccentric cammed ball. The seal assembly may include a seal ring disposed within the valve interior and biased toward the ball element of the valve. A seal ring retainer may be threadedly secured to an interior of the valve body, thereby retaining the seal ring in the valve body. | 04-16-2015 |
| 20150108385 | ROTARY METERING VALVE ASSEMBLY AND METHOD OF MODIFYING CONTACT SURFACE FOR REDUCING GAUGE WRINGING - A rotary metering valve assembly includes a stationary body plate having a first contact surface. Also included is a valve plate having a second contact surface disposed in contact with the first contact surface of the stationary body plate, wherein the valve plate is configured to rotate relative to the stationary body plate. At least one of the first contact surface and the second contact surface comprises a surface flatness of less than about 2.4 μm (about 93 μin) and a surface roughness of at least about 0.2 μm (about 8 μin). | 04-23-2015 |
| 20150300508 | Valve Seat for Floating Ball Valve - The present invention discloses a type of valve seats for a floating ball valve, the valve seats are connected to a valve body both ends of the floating ball valve through elastic elements, and when the floating ball valve is closed, both a ball of the floating ball valve and the valve seats move in the valve body cavity in order to seal. | 10-22-2015 |
| 20150330515 | AIR INTAKE CONTROL VALVE AND AIR INTAKE APPARATUS - The present air intake control valve includes a valve body and a seal portion being elastically deformable to seal between an inner wall surface of an air intake port and the valve body. The seal portion is formed in a bending configuration including a first hinge portion and a second hinge portion each serving as a supporting point upon elastic deformation of the seal portion. One of the first hinge portion and the second hinge portion is arranged at an upstream side of the air intake port and the other of the first hinge portion and the second hinge portion is arranged at a downstream side in a state where the valve body is at a closed position. | 11-19-2015 |
| 20160109031 | LOW-DRAG SEALING METHOD FOR THERMAL MANAGEMENT VALVE - A low-drag seal arrangement for a thermal management valve including a housing having a chamber and at least one bore for flowing a fluid medium through the at least one bore between a location exterior of the housing and the chamber of the housing. A rotor is configured to rotate within the chamber of the housing relative to the bore. The rotor moves between a closed position where the flow of fluid medium through the at least one bore is blocked, an open position where the fluid medium flows through the at least one bore and an intermediate position where the flow of fluid medium through the at least one bore is partially restricted by the rotor's position relative to the bore. The low-drag seal arrangement also includes a face seal piston positioned within the at least one bore and configured to move axially within the bore. | 04-21-2016 |
| 251316000 | Replaceable | 2 |
| 20120267559 | SEAL MEMBER FOR FLUID TRANSFER SYSTEM - The specification discloses a seal member for selectively completing a fluid passageway defined between an upstream member and a downstream member separated by an intermediate space, the seal member comprising an elongate stem portion dimensioned to be movably positionable in an opening defined through the upstream member between opposite first and second surfaces thereof, the elongate stem portion having provided at one end thereof a resiliency deformable, radially-extending flange and at the other end thereof a sealing face, and a fluid passageway defined through the stem portion between the flange and the sealing face. The flange is deformable under fluid pressure to increase the area of contact between the flange and the first surface of the upstream member and to simultaneously move the stem portion within the opening defined in the upstream member so as to bring the sealing face into sealing contact with an opposing surface of the downstream member across the intermediate space. | 10-25-2012 |
| 251317000 | Deformable material | 1 |
| 20140203203 | SEALING SYSTEM FOR INDUSTRIAL VALVES, PARTICULARLY FOR BALL VALVES, AND VALVE COMPRISING SAID SYSTEM - The present invention relates to a sealing system particularly for industrial safety valves, more particularly for industrial ball valves. Thus, the present invention relates both to a sealing system and to a ball valve comprising said sealing system. The sealing system according to the present invention is of the type comprising an elastomeric element ( | 07-24-2014 |
