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| Number | Title | Issue Date |
| 8146885 | Field removable bonnet assemblies for use with valves Field removable bonnet assemblies for use with valves are described herein. An example field removable bonnet assembly for use with internal valves includes a body that is to be removably coupled to the internal valve. The body defines a bore that is to receive a va... | 04/03/2012 |
| 8136792 | Double containment valve system A stemmed control valve having a housing containing a first packing assembly that is compressively loaded externally of the housing, and a second packing assembly that is independently compressively loaded in a fixed manner internally of the housing. ... | 03/20/2012 |
| 8132784 | Fixing system and joint, for fixing an actuator to a valve An actuator (1) is fixed on a valve (2) through a fixing joint (3) which comprises a tubular sleeve (32) on which a tightening nut (30) is screwed; the nut (30) and the sleeve (32) are provided with a conical thread c... | 03/13/2012 |
| 8132785 | Shaft seal packing and shaft seal structure for valve A shaft seal packing exhibits high sealability at the time of initial assembly and also exhibits, even after the packing is retightened, excellent sealability by an increased seal surface pressure obtained through an effect of pressing and by self-sealability obtain... | 03/13/2012 |
| 8128062 | 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 ... | 03/06/2012 |
| 8113485 | Leak-proof structure of oil pipe connector A leak-proof structure of an oil pipe connector includes: a connector cylinder, being a hollow housing, and having an oil inlet at a front end, and an oil outlet at a rear end, and a switch base interconnected to a shaft hole in the connector cylinder; a control dev... | 02/14/2012 |
| 8100383 | 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 s... | 01/24/2012 |
| 8070130 | Apparatus to bias valve closure members A biasing apparatus includes a first spring seat that has a first seating surface and a first protruding member extending a predetermined distance from the first seating surface and a second spring seat that has a second seating surface and a second protruding membe... | 12/06/2011 |
| 7997557 | Exhaust gas recirculation valve and method of producing exhaust gas recirculation valve A valve shaft 8 and a drive shaft 11 of an EGR valve 1 are butted to each other; protrusions 26a, 26b, 27a, and 27b formed on the inner sides of cotter members 24, 25 of a cotter ... | 08/16/2011 |
| 7980530 | Packing nut for control valve A packing nut assembly for a control valve having a valve body and a valve stem includes a packing box arranged for operative coupling to the valve body and having a primary bore sized to receive the valve stem and first and second counterbores. The first counterbor... | 07/19/2011 |
| 7980531 | Valve having first and second fluid ports A device in a valve (1) includes a valve housing (2) with at least a first (3) and a second (4) fluid port. A closure element (5) including a sealing portion (15) and diaphragm (30) is arranged in the valve housing ( | 07/19/2011 |
| 7971854 | Replaceable valve shaft sealing system A replaceable valve shaft sealing system is disclosed that enables the operator to greatly reduce the maintenance needs of valves where rotational movement of a shaft, that is connected to the actual metering apparatus of the valve, actuates the opening or closing o... | 07/05/2011 |
| 7963502 | Low friction live-loaded packing A valve packing assembly for a control valve includes a seal assembly, a loading assembly, and a packing retainer. The seal assembly has a seal component to provide a fluid seal around a valve stem and an anti-extrusion component to substantially prevent extrusion o... | 06/21/2011 |
| 7862005 | Flow amount control valve In a flow amount control valve, a rod is inserted through the interior of a housing, and first and second connecting members are connected coaxially to both ends of the rod. A first bellows and a second bellows, each having a bellows portion, are provided on the rod... | 01/04/2011 |
| 7753339 | Valve device A valve device includes: a valve stem 4 vertically movably inserted in a staffing box 1; a gland packing 2 interposed between the staffing box 1 and the valve stem 4; a packing flange 9 disposed above the gland packing 2 | 07/13/2010 |
| 7628380 | Self-compensating packing gland A valve assembly includes a stem and a body having a passageway for receiving the stem. The diameter of at least an upper portion of the passageway is greater than a diameter of the stem assembly to form a stem space. A packing element is received around the stem as... | 12/08/2009 |
| 7578495 | Leak prevention system The present invention is a leak prevention system that monitors and detects loosening of a valve. The leak prevention system includes a biasing member, a tightening member, and a pulling member. The biasing member has a first end and a second end, the first end bein... | 08/25/2009 |
| 7438036 | Oil metering valve seal A valve stem seal having an annular valve body with an upper surface, a lower surface, and defining an aperture is disclosed. The valve body is positioned for selective sealing engagement with a valve stem. At least one orifice is disposed on an inner surface of the... | 10/21/2008 |
| 7429028 | Valve, exhaust gas recirculation control valve and valve assembling method A valve has a housing, a shaft with a valve disc, and a sliding shaft support portion along which the shaft slides, wherein the sliding shaft support portion is provided with a seal member movable and deformable in a certain range. ... | 09/30/2008 |
| 7428912 | Metal valve stem and sealing system A metal valve stem seal and sealing system includes a valve body, a metal valve stem housed within the valve body, a bonnet member housed within the valve body, and a U-shaped metal stem gasket positioned between the metal valve stem and the bonnet member. The gaske... | 09/30/2008 |
| 7426936 | Fully independent, redundant fluid energized sealing solution with secondary containment A redundant sealing system with secondary containment for preventing leakage of fluid along a valve shaft is provided. The system comprises a first set of dynamic seals, a second set of dynamic seals, an auxiliary barrier fluid chamber, and a barrier fluid indicator... | 09/23/2008 |
| 7380768 | Balanced-plug cage style control valve and bonnet seal assembly A balance-plug cage style control valve has substantially reduced body-bonnet bolt loading with an elastic seal. The elastic seal assembly includes an annular seal having an elastic region, a compression surface, and at least one sealing surface positioned in a chan... | 06/03/2008 |
| 7370673 | Self-contained isolated port A service valve for a refrigerant system comprising a valve body and a system port. The valve body has at least one fluid passage integrated therein including a longitudinal bore. An orifice is located at one end of the bore. An annular protrusion axially extends fr... | 05/13/2008 |
| 7353834 | Variable rate pressure regulator A pressure regulator valve including a valve seat separating a fluid flowpath into an upstream region and a downstream region. A valve closure member is mounted on a valve stem, the valve stem operable to vary a separation between the valve seat and the valve closur... | 04/08/2008 |
| 7334771 | Device for locking and/or sealing a conduit The invention relates to a blocking apparatus for blocking and/or sealing off a line for transporting—preferably hot—media, in particular dust-laden gases, preferably for blocking and/or sealing off a line for transporting hot gases which may be laden with solid... | 02/26/2008 |
| 7322961 | Seal assembly for elastomeric infusion pump An infusion apparatus including a support member and an elastic sleeve surrounding the support member to define a fluid reservoir therebetween. The sleeve is expandable in a radial direction when the infusion apparatus is loaded with a fluid, such as a pain medicati... | 01/29/2008 |
| 7320378 | Exhaust control apparatus for a vehicle, and vehicle including same An exhaust control apparatus for a motorcycle includes an exhaust collection pipe, which collects and combines exhaust gas from a plurality of exhaust pipes, and an exhaust valve. The exhaust valve is operatively attached to the collection pipe and controls flow of ... | 01/22/2008 |
| 7316241 | Steam trap A steam trap comprises a trap body having an inlet and an outlet each defining inner threads. The trap body further includes a spigot defining external threads. Also provided is a cap defining internal threads for engaging the external threads of the spigot of the t... | 01/08/2008 |
| 7316386 | Valve stem seal assembly A valve stem seal assembly having a retainer body that includes an annular interior passageway defined by a wall is disclosed. At least one internal sprue extends between top and bottom ends of the retainer body and are formed within the wall. A channel is concentri... | 01/08/2008 |
| 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 |
| 7303179 | Split packing follower for use with valves Split packing followers for use with valves are disclosed. A disclosed packing follower includes a first member having a first portion of a flange and a first portion of a curved wall extending substantially perpendiculary from the first portion of the flange to def... | 12/04/2007 |
| 7278449 | Switch, especially for branching off bulk material flows The invention relates to a switch for branching off bulk material flows, the switch includes a rotary plug (1) which is arranged in a fixed housing having preferably three connection openings. In a first position the plug establishes a connection between a fi... | 10/09/2007 |
| 7249751 | Ball valve with shear bushing and integral bracket for stem blowout protection A valve 100 comprising a one piece valve body 112 having an axial fluid bore 124 therethrough and a fluid control element 110 rotatable between open and closed positions. The body 112 includes an integral bracket 128 which p... | 07/31/2007 |
| 7249750 | Pressure balanced fluid control device The present invention is directed to a pressure balanced fluid control device. In one illustrative embodiment, the device comprises a body, a bonnet coupled to the body, a valve stem operatively coupled to a gate positioned in the body, a valve stem seal positioned ... | 07/31/2007 |
| 7243902 | Pressure-compensated, directly controlled valve The invention relates to a valve for high-pressure hydraulics, having a valve bore provided in a valve housing in which bore at least one valve seat dividing a guide on the high-pressure side of the valve bore from a guide on the low-pressure side of the valve bore ... | 07/17/2007 |
| 7243901 | Rotary valve apparatus and associated methods A rotary valve is provided with an elliptical valve disc that seats against a seal element operatively mounted in an elliptically shaped depression formed in the rigid annular portion of a seal cartridge structure carried by the valve body. Due to the elliptical sha... | 07/17/2007 |
| 7240868 | Dynamic ring classifier for a coal pulverizer The present invention is directed to, among other things, a classifier assembly for mounting on the center shaft of a rotary coal pulverizer which includes a labyrinthian sealing arrangement operatively associated with the shaft for limiting the egress of unacceptab... | 07/10/2007 |
| 7225792 | Valve device for internal combustion engine A valve device for an internal combustion engine is provided with two flange portions, each of which is arranged at the outer periphery of a valve and has a larger outer diameter than a shaft. Annular valve-side end surfaces of the flange portions obstruct water flo... | 06/05/2007 |
| 7219878 | Live loaded packing for valve In accordance with the present invention, there is provided a lie loaded packing assembly for a valve which comprises a valve body defining a passage having a valve stem moveably disposed therein and selectively moveable between open and closed positions. Extending ... | 05/22/2007 |
| 7216844 | Valve which enables easy operation of a closure mechanism at any internal valve pressure The invention relates to pipeline accessories and can be used for working medium flow control in pipelines in particular the pipelines having a high pressure and flow rate of working fluid. Technical result is achieved due to the fact, that the inventive valve compr... | 05/15/2007 |
