Class / Patent application number | Description | Number of patent applications / Date published |
251214000 | Particularly packed or sealed | 42 |
20080203346 | Fluid control system - This invention provides a fluid control system for regulating flow fluid under extreme conditions and includes a reciprocal a reciprocal | 08-28-2008 |
20080245988 | VALVE WITH SELF-ALIGNING SHAFT SEAL - A valve design that enables a positive shaft seal to be obtained in an inexpensive manner by reducing the need for close tolerances heretofore required in prior art designs. This unique valve design employs a shaft seal that is adapted for transverse and/or angular movement during assembly of the valve for aligning to the shaft at an alignment position in which it is held after assembly of the valve by a holding device such as a seal nut or spring. | 10-09-2008 |
20080265198 | Metering Valves for Dispensers - A metering valve ( | 10-30-2008 |
20080290307 | Valve For Use In A Container Which Employs Pressure To Dispense Product - A valve for a pressurized dispensing container has a resilient annular grommet that surrounds a valve stem. The grommet has a lower segment which engages an elongate valve stem opening with a slight interference fit to provide user controllable metering of the product being dispensed. A recess in the lower surface of the grommet contains the stem button from the closed state to the fully open state to provide stability for the stem. The upper portion of the grommet has a restoring boot to assure that the valve is returned to its closed state once manual force is removed from the valve. A boot flange and stem recess engagement together with other dimensional relationships assures that the boot provide the required restoring force throughout the dispensing of product. | 11-27-2008 |
20090001307 | Metal Valve Stem Seal and Sealing System - The present invention is directed to a metal valve stem seal and sealing system comprising a valve body; a metal valve stem housed within the valve body; a bonnet member housed within the valve body; a U-shaped metal stem gasket positioned between the metal valve stem and the bonnet member, wherein the gasket has a first lip member and a second lip member each having an interior surface and an exterior surface; a metal wedge ring fitted between the first and second lip members; and, at least one metal energizing spring adjacent the wedge ring, wherein the metal energizing spring applies a sufficient force to the wedge ring to cause the wedge ring to apply a sufficient contact pressure to the first and second lip members to form a seal between the gasket and the metal valve stem and to form a seal between the gasket and the bonnet member. | 01-01-2009 |
20090278068 | Seal Structure and Control Valve Using Said Seal Structure - A seal structure sealing a fitted part between the guide surface of a bearing part and a shaft part to prevent a fluid from flowing in a direction from a high-pressure fluid side to a low-pressure fluid side. The seal structure comprises a seal ring storage part having a radial contact surface surrounding the shaft part which is formed on the high-pressure fluid side of the bearing part and a seal ring disposed in the seal ring storage part, allowing its side surface facing the contact surface to come into contact with the contact surface, and allowing its inner peripheral surface to be fitted to the outer peripheral surface of the shaft part. The seal ring is formed in such a relative dimension that, even if elastically deformed by the pressure of the sealed fluid, the elastically deformed expanded portion thereof is not brought into contact with the peripheral surface of the seal ring storage part. | 11-12-2009 |
20100038574 | VALVE ASSEMBLY - A valve assembly includes: a valve body defining an annular shoulder that is formed with an annular shoulder groove; a hollow ball member disposed in the valve body; a sealing unit including an O-ring received in the shoulder groove and protruding outwardly of the shoulder groove; a stem extending into the valve body to connect with the ball member and formed with an annular flange seated on the O-ring; an annular packing seated on the annular flange; and an annular pressing member defining an annular neck that cooperates with the annular shoulder to sandwich the annular flange, the O-ring and the annular packing therebetween. The pressing member is coupled adjustably to the valve body, and is adjustable to move toward and away from the O-ring. | 02-18-2010 |
20100051846 | SHAFT SEALING DEVICE AND VALVE STRUCTURE USING THE SAME - A shaft sealing device with a simple internal structure switches a sealing state and an unsealing state of a fluid, with high sealing performance maintained, because of no abrasion accompanying the movement of a sealing material or a sealing member, thereby enabling feeding a fluid at a predetermined flow rate, and adjusts the expanding rate of the sealing material with the quantity of an external electric signal and accordingly adjusts the contact face pressure to enable controlling the amount of leakage of the fluid highly precisely, so that it can be used for all applications. The shaft sealing device includes a shaft sealing body formed of a macromolecular material and made expansible or contractible, or deformable, through external electrostimuli applied to a shaft sealing portion disposed in a device body, and flow passages disposed in the shaft sealing portion for feeding the fluid leaked due to the expansion or contraction, or the deformation, of the shaft sealing body. | 03-04-2010 |
20100102262 | PACKING FOLLOWERS FOR USE WITH VALVES - Packing followers for use with valves are described. An example packing follower for use with a valve includes a body having an elongated portion and a bore therethrough to receive a shaft. A portion of the bore is tapered to exert a force on a retainer that at least partially surrounds and is positioned within a groove of the shaft when the shaft moves toward an opening defined by the body. Additionally, the force has a first component in a direction perpendicular to a longitudinal axis of the bore and a second component smaller than the first component in a direction parallel to the longitudinal axis of the bore. | 04-29-2010 |
20100155640 | VALVE ARRANGEMENT - A valve including a valve body having a bore and a spindle received in the bore, the spindle being actuatable to open and close the valve. A compression gland seal is provided about the spindle for compression between the spindle and the bore. A first seal ring is provided about the spindle at a position spaced along the spindle from the gland seal, and provides a seal between the spindle and the bore of the valve body. A second seal ring is provided about the spindle at a position spaced along the spindle from the gland seal and the first seal ring, and provides a further seal between the spindle and the bore of the valve body. | 06-24-2010 |
20100163771 | LONGITUDINAL BULGING SEAL FOR SPRAY GUN | 07-01-2010 |
20110006234 | SHAFT RETAINING ASSEMBLIES FOR USE WITH FLUID VALVES - Shaft retaining assemblies for use with fluid valves are described. In a described example, a bonnet assembly for use with a fluid valve includes a bonnet defining a passage to receive at least a portion of a shaft of the fluid valve. The bonnet is to be removably coupled to the fluid valve. Additionally, the example bonnet assembly includes a retaining assembly mounted in the bonnet to be substantially not exposed to a flow of fluid through the fluid valve. The retaining assembly is to control an amount of movement of the shaft along a longitudinal axis of the shaft to enable an alignment of a sealing element coupled to an end of the shaft relative to a seating surface of the fluid valve. | 01-13-2011 |
20110140021 | Opening and Closing Valve - To prevent formation of a gap between the upper surface of a packing gland and the lower surface of a yoke sleeve even when the packing gland is lowered. A valve stem is journaled in a journaling portion of a valve box in an upwardly and downwardly movable manner; a packing is interposed between the journaling portion of the valve box and the valve stem; a packing gland which presses the packing is arranged above the packing; a yoke sleeve inserted into a yoke portion of the valve box and screwed into the valve stem is provided above the packing gland; and a valve seat in the valve box is opened and closed with a valve element provided at the lower end of the valve stem by rotating a handle fitted into the yoke sleeve to move the valve stem upward and downward. A protective tube formed integrally with the packing gland is provided between the packing gland and the yoke sleeve around the valve stem. A guide projection with which the inner periphery of the upper end of the protective tube comes into contact is provided on the lower surface of the yoke sleeve. | 06-16-2011 |
20110147632 | Control Valve Having Live Loaded Packing Follower with Leak-Off and Independent Secondary Seal - A control valve includes a valve body, a valve stem, and a control element. The valve body receives the stem and includes a packing box housing a packing set. A packing follower includes a bore sized to receive the stem and includes an upper portion, a lower portion, and a bearing surface, the lower portion sized to extend into the valve bonnet to engage the packing set to apply a first compressive force to the packing set, the upper portion including threads and having an upper counterbore housing a secondary seal ring. A nut operatively engages the threads of the upper portion of the packing follower, the nut positioned to apply a second compressive force to the secondary seal ring, and a spring is positioned between the packing flange and the bearing surface of the packing follower, wherein the first compressive force is independent of the second compressive force. | 06-23-2011 |
20120153202 | FIELD REMOVABLE BONNET ASSEMBLIES FOR USE WITH VALVES - Field removable bonnet assemblies for use with valves are disclosed. An example internal valve includes an internal valve body and a field removable bonnet assembly. The field removable bonnet assembly includes a body that is to be removably coupled to the internal valve body and a shaft to be at least partially positioned within the body. The field removable bonnet assembly also includes an adjuster including a first adjuster portion and a second adjuster portion. The body defines a bore having a first diameter portion and a second diameter portion larger than the first diameter portion. The first diameter portion is to receive a valve packing. The second diameter portion to be threadably engaged by the second adjuster portion. The adjuster is externally accessible to adjust the first adjuster portion within the first diameter portion to change a force exerted by the valve packing on the shaft. | 06-21-2012 |
20120193561 | VALVE WITH SELF-ALIGNING SHAFT SEAL - A valve design that enables a positive shaft seal to be obtained in an inexpensive manner by reducing the need for close tolerances heretofore required in prior art designs. This unique valve design employs a shaft seal that is adapted for transverse and/or angular movement during assembly of the valve for aligning to the shaft at an alignment position in which it is held after assembly of the valve by a holding device such as a seal nut or spring. | 08-02-2012 |
20120193562 | STRUCTURE FOR REDUCING AXIAL LEAKAGE OF VALVE | 08-02-2012 |
20120319020 | ACTUATING DEVICE FOR AN EXHAUST GAS FLOW CONTROL ELEMENT OF AN EXHAUST GAS TURBOCHARGER - Actuating device for a gas flow control element arranged in an inflow path of a turbocharger turbine and connected to a spindle traversing a turbine housing wall and fixed to an adjusting element adjoining said wall; a resilient seal pretensioned in the spindle axis direction comprises at least one annular sealing disc traversed by the spindle and being a resilient sheet metal ring is installed between said wall and the adjusting element said ring being pressed with bead feet of at least one annular half bead against an abutment surface fixed relative to the adjusting element and an abutment surface fixed relative to said wall, and the seal together with said abutment surfaces and at least the spindle delimit a space being sealed gastightly except for at least a gap between the spindle and said wall. | 12-20-2012 |
20130105716 | VALVE AND STEM SEALING ASSEMBLY | 05-02-2013 |
20130270472 | PLUG VALVE AND STEM SEALING ASSEMBLY - An improved and more robust plug valve and stem sealing assembly capable of preventing leakage under demanding environmental and operating conditions while also improving the reliability of the valve seal. The valve includes a body, a flow-element, a bonnet and a self-adjusting stem sealing assembly. The body has a first port and a second port with a passage configured to flow a media extending between said first port and said second port. The flow-element is positioned between the first and second port and has a stem configured to actuate the flow-element between a closed position and an open position. The bonnet may be secured to the valve body and configured to secure the flow-element and stem sealing assembly in position. The self-adjusting stem sealing assembly is positioned adjacent to the stem and is configured to prevent media leakage from the valve. | 10-17-2013 |
20130313459 | HIGH VACUUM BALL VALVE - A ball valve having a valve stem assembly disposed within a valve body through-hole. The valve body through-hole is encircled with secondary bores to accommodate components of the valve stem assembly. The valve stem assembly includes an upper bearing and lower bearing, which are seated into corresponding secondary bores and a stem seal that seats within a stem seal gland. The upper bearing further includes a step that interdigitates with the stem seal gland to form a stem seal groove when the valve stem assembly is disposed within the through-hole. | 11-28-2013 |
20140077111 | METHODS AND APPARATUS TO LOAD A VALVE PACKING - Methods and apparatus to load a valve packing are described. An example method disclosed herein includes adjusting a packing flange nut to a position corresponding at least approximately to a free condition of a biasing assembly, coupling a first gauge member to a first flange, adjusting a first gap between a first surface of the first gauge member and a reference surface opposite the first flange to a first predetermined distance, and tightening the packing flange nut so that the first surface of the first gauge member substantially aligns with or engages the reference surface and causes a load assembly to provide a first predetermined packing stress to the valve packing when the first gauge member substantially aligns with or engages the reference surface. | 03-20-2014 |
20140084199 | VALVE STEM SEAL ARRANGEMENT - The invention provides a valve useful as a production valve in or connected to a production tree subsea, and other similar uses subsea or topside, the valve comprises a valve element, a valve element pressure housing, an actuator, a stem and a bonnet, the actuator is via the stem operatively arranged to close or open a fluid passageway through the valve element, the bonnet enclose the stem and is connected to the valve element pressure housing and seals are arranged between the stem and the bonnet for sealing against the pressure of the valve element pressure housing. The valve is distinctive in that the valve comprises at least one seal for sealing between stem and bonnet, the seal having identical inner sealing diameter against the stem and outer sealing against a single body or element of the bonnet. | 03-27-2014 |
20140183392 | GATE VALVE ARRANGEMENT INCLUDING MULTI-VALVE STEM AND SEAT ASSEMBLIES - A gate valve for use in oil field applications and including a stem seal assembly and a seat seal assembly. Each of the stem and seat seal assemblies accommodate independent primary, secondary, and tertiary seals for sealing the space between the stem and the bonnet, or the seat ring and the valve body, respectively. The provision of multiple seals in each assembly provides redundancy that allows for maintenance of the seal between the components even if one or two of the individual seals fail. | 07-03-2014 |
20140183393 | MULTI-VALVE STEM SEAL ASSEMBLY FOR A GATE VALVE - A gate valve for use in oil field applications and including a stem seal assembly. The stem seal assembly includes primary, secondary, and tertiary seals for sealing the space between the stem and the bonnet. The provision of multiple seals in the stem seal assembly provides redundancy that allows for maintenance of the seal between the components even if one or two of the individual seals fail. | 07-03-2014 |
20140197342 | Filler Assembly for a Valve - A filler assembly is mounted in an axial hole of a cap of a valve. The filler assembly includes at least one first filler and at least one second filler stacked in a longitudinal direction. A valve rod received in the axial hole extends through the at least one first filler and the at least one second filler. At least one of two mutually abutting faces respectively of the at least one first filler and the at least one second filler is at a non-parallel angle to a radial direction perpendicular to the longitudinal direction. If one of the at least one first filler and the at least one second filler is subjected to a pressing force in the longitudinal direction, at least one of the at least one first filler and the at least one second filler is moved in the radial direction to press against the valve rod. | 07-17-2014 |
20140239213 | VALVE APPARATUS - A valve apparatus includes valve box, valve shaft, first flexible film, and second flexible film. The valve box includes inlet and outlet, and forms a space therein for housing the fluids. The valve shaft is inserted into through-hole formed in the wall of the valve box, and moves in the longitudinal direction of the through-hole to move valve body in order to block the flow of the fluids from inlet to outlet. The first flexible film includes a through-hole into which the valve shaft is inserted. The outer peripheral end of the first flexible film is fixed to the peripheral edge of the through-hole, and the peripheral edge of the through-hole of the first flexible film is fixed to the outer periphery of the valve shaft to close the gap between the through-hole and the valve shaft. The second flexible film forms a part of the wall of valve box. | 08-28-2014 |
20140264121 | ROTARY SHAFT SEALS - Rotary shaft seals are disclosed herein. An example apparatus includes a valve body and a shaft extending into the valve body. The shaft is to rotate relative to the valve body. The example apparatus also includes a seal. The seal is disposed outside of the valve body and fixedly coupled to the valve body and the shaft to provide a fluid seal between the shaft and a cavity within the valve body. | 09-18-2014 |
20140306137 | BALL VALVE HAVING AN EXTERNAL SEAL ARRANGEMENT, PARTICULARLY FOR USE IN MOTOR VEHICLE REFRIGERANT CIRCUITS - The invention relates to a ball valve ( | 10-16-2014 |
20140339450 | COMPRESSIBLE PACKING LIVE LOADING APPARATUS - A live-loading assembly for exerting a sealing force on a compressible packing structure of a fluid handling device, such as a valve or pump, includes a pair of gland bolts each movably extending through opposite end lids of a tubular cartridge and through a Belleville spring stack disposed within the cartridge and bearing on a tubular piston rod having an end portion extending outwardly through one of the lids and having a spring force indicating scale disposed thereon. When packing force adjustment nuts are tightened onto the bolts, to increase the compression force exerted on the packing structures, one of the lids on each cartridge moves along the associated exposed piston rod scale to thereby provide a visual indication of the amount of spring force being created by each tightened nut. | 11-20-2014 |
20150034852 | DRIVE SLEEVE AND SEALING MECHANISM FOR NON-RISING STEM GATE VALVE - A non-rising stem gate valve is provided that includes a drive sleeve disposed between the gate and the stem. The drive sleeve is coupled to the stem and isolates the moveable connection between the sleeve and the stem from fluid in the valve. The drive sleeve is also coupled to the gate such that movement of the drive sleeve along the stem moves the gate between the open and closed positions of the valve. Systems and methods incorporating the non-rising stem gate valve are also disclosed. | 02-05-2015 |
20150090916 | Ball Valve Having Conically Shaped Stem Seal - A ball valve including a valve body that includes a first body member and a second body member. The valve body defines a valve axis and a fluid flow path. A ball element has a port and a ball stem, and is rotatable about a ball stem axis between an open position providing fluid flow through the fluid flow path and a closed position inhibiting flow through the fluid flow path. A body seal is located between the first body member and the second body member and defines a thickness that decreases as the body seal extends away from the valve axis. A stem seal defines a substantially frusto-conical shape and is arranged in the valve body. The ball stem extends through the stem seal to form a seal between the ball stem and the stem seal and between the stem seal and the valve body. | 04-02-2015 |
20150102247 | VALVE AND CHOKE STEM PACKING ASSEMBLIES - A stem packing assembly including a first annular member defining a central axis, a second annular member defining a central axis coaxial with the central axis of the first annular member, and an annular energizing member defining a central axis coaxial with the central axis of the first annular member. In an embodiment, the stem packing assembly can have a leakage rate according to ISO 15848-1 of less than 1×10 | 04-16-2015 |
20150144823 | DUAL SEAL FIRE SAFE STEM PACKING ORIENTATION - A valve with a packing assembly includes a valve body assembly with a bore, a valve member moveable between an open position and a closed position, and a valve stem coupled to the valve member. A first stem packing circumscribes a portion of the valve stem, and is located in an upper bore portion of the bore. A first packing retainer has a collar that limits axial movement of the first stem packing, and also has a first retainer body defining an inner cavity. A second stem packing circumscribes a portion of the valve stem and is located in the inner cavity of the first packing retainer. A second packing retainer has a neck compressingly engaging the second stem packing, and a retainer shoulder that engages the first packing retainer. A retaining assembly is coupled with the valve body assembly for applying axial force to the second packing retainer. | 05-28-2015 |
20150345657 | ROTARY-TO-LINEAR MOTION ACTUATOR HAVING A HELICAL BEVEL GEAR AND METHOD OF USE THEREOF - A rotary-to-linear motion actuator having helical bevel gear and methods of use thereof are described. The actuator may be utilized with an apparatus for managing a fluid flow passage between one or more input ports and output ports. A pinion gear engages, and during operation turns, a bevel ring gear arranged on a helical path along an external periphery of a sleeve retaining a seat, which forms a fixed orifice. The teeth of the bevel gear are arranged on the helical path at the same pitch as external threads on the sleeve, which in turn, engage internal threads in a thrust tube. The trust tube is engaged with a thrust tube jam nut that locks the thrust tube into position within the valve body. The area of the flow passage is changed by movement of the fixed seat orifice axially with respect to a contoured plug assembly. The threads of the sleeve and the thrust tube resist axial load imparted by the pressure drop across at the fixed orifice. | 12-03-2015 |
20150369388 | FLUID VALVE AND MODULAR SHAFT SEALING STRUCTURE THEREOF - A fluid valve includes a valve body, a shaft and a valve disc. A shaft seal groove and a valve disc groove, which are in communication with each other, are provided in the valve body. The valve disc is disposed in the valve disc groove. A modular shaft sealing structure is provided in the shaft seal groove, and formed by sequentially stacked shaft seal rings, shaft rings and spring. The inner sides of these components are combined to be an accommodating space, in which the shaft is allowed to be accommodated. The modular shaft sealing structure of the present invention may be detachable, and can be integrally replaced, enabling more convenient replacement of components in the shaft sealing structure, so that the loads on the entire shaft sealing structure can be balanced. | 12-24-2015 |
20150369389 | FLUID VALVE AND SHAFT SEALING STRUCTURE THEREOF - A fluid valve includes a valve body, a shaft and a valve disc. A shaft seal groove and a valve disc groove, which are in communication with each other, are provided in the valve body. The valve disc is disposed in the valve disc groove. A modular shaft sealing structure is provided in the shaft seal groove, and formed by sequentially stacked shaft seal rings, shaft rings and spring. The inner sides of these components are combined to be an accommodating space, in which the shaft is allowed to be accommodated. The modular shaft sealing structure of the present invention may be detachable, and can be integrally replaced, enabling more convenient replacement of components in the shaft sealing structure, so that the loads on the entire shaft sealing structure can be balanced. | 12-24-2015 |
20160018018 | Linear Flow Valve Assembly - A valve assembly comprising a valve stem, a valve body having an internal surface and an external surface along the valve body, and a kettle bulkhead member. The valve stem can have a parabolic end that facilitates a substantially linear fluid flow and can allow for better control of the fluid flow through the valve. The valve stem can have a o-ring that seals the liquid within the valve assembly and can also act as a detent preventing the valve stem to be accidentally removed from the flow cavity. | 01-21-2016 |
20160069460 | BALL VALVE STEM RETAINING SYSTEM - A system includes a ball valve with a housing having a fluid passage, a ball disposed within the housing along the fluid passage, and a stem coupled to the ball. The stem is configured to move the ball between an open position and a closed position relative to the fluid passage. The stem is disposed in a first opening on a first side of the housing. The stem is removable from the first opening, through at least one opening in the ball, and out through a second opening on a second side of the housing. | 03-10-2016 |
20160108863 | APPARATUS FOR REDUCING FRICTION IN EGR DRIVER - An improved apparatus for reducing friction in an EGR driver may include a space member mounted on a stem and having a side provided with a plurality of depressed portions to reduce a contact area with an inner side of a valve, such that the friction generated by a contact of the stem with a stem guide when the stem provided inside the valve vertically moves is reduced. | 04-21-2016 |
20160138731 | Positioning Device - A device and approach to ensure acceptable alignment of internal mechanical components requiring bushings. Over wide ranges of temperature, some bushings experience sufficient thermal dimensional change as to misalign or to interfere with other mechanical components. Such bushings may be reduced in size or include a plurality of outer surfaces to avoid interference, and employ ball nose assemblies to maintain acceptable alignment. At full thermal expansion of such a bushing, the ball nose assembly inter-relates with the bushing so as to maintain alignment without interference. | 05-19-2016 |
20160178087 | Dynamic Stem Packing | 06-23-2016 |