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| Number | Title | Issue Date |
| 7416164 | Elliptical sealing surface for butterfly valve A reduced component wear valve is comprised of a valve body having a passage therethrough and a disc attached to a rotatable shafts. The disc is utilized with a seal forming a gap between the disc and the seal proximate to the rotational axis of the disc. When the d... | 08/26/2008 |
| 7380571 | Directional control valve A valve accommodating hole (11), and each of a supply port (20), discharge ports (21 and 22), and output ports (23 and 24) connected to the valve accommodating hole are formed in a valve casing (15), and a valve shaft... | 06/03/2008 |
| 7367229 | Liquid flow regulating device and dynamometer testing device The present invention relates to a regulating device (1) for control of flow and/or pressure, including a housing (3) enclosing a movable inner member (2) which is provided with a passage corresponding to the housing inlet. The inlet comprises a... | 05/06/2008 |
| 7101131 | Attachment system An attachment system for securing a rod member in a mounting opening of a constructional component (44; 74; 97) includes a receiving sleeve (5; 37; 64; 73; 93) for receiving the rod member (23; 40), and an actuation member (4; 35; 62; 72; 81;... | 09/05/2006 |
| 7063516 | One-way valve A double diaphragm pump including an air manifold, two air chambers to either side of the air manifold, two pump chambers to either side of the air chambers and diaphragms extending between the air chambers and pump chambers are stacked together in horizontal assemb... | 06/20/2006 |
| 6997211 | Multiple 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 |
| 6974119 | Actuator An actuator unit including a step-up which varies over an adjustment path, between a control motor and a wheel connected to the throttle body in a manner fixed against relative rotation offers the advantage that in certain positions of the throttle body, the require... | 12/13/2005 |
| 6736162 | Pressure relief valve with improved repairability A repairable pressure relief valve having a valve body that forms an internal fluted surface provides improved field repairability. The internal, fluted surface is adapted to mate with a removal tool. A valve assembly is slidably mounted in the valve housing and sli... | 05/18/2004 |
| 6726177 | Valve with improved junk ring structure The valve with an improved junk ring structure is composed of a main body, a valve disk, a washer and a junk ring. The main body has on one side thereof a stepped surface of which the outermost end has a screw thread portion on the inner wall thereof, the main body ... | 04/27/2004 |
| 6668853 | Pressure relief valve with field-replaceable high corrosion-resistant components A pressure relief valve has a gasketed main body fastened to a vessel wall adjacent to a vent port, the body having a recess surrounding the port which receives a plastic insert removably coupled to the body by a retaining ring fastened to the main body. ... | 12/30/2003 |
| 6361051 | Face seal for barrel type water valve A cylindrically curved rectangular face seal is provided for a cross-ported barrel type rotary valve member. The seal has a central flow orifice therethrough with an annular raised rib formed about the orifice and extending in a radial direction from the ... | 03/26/2002 |
| 5649567 | Sealing arrangement, for use with, and in combination with, a steam and fuel oil control and furge valve, and a valve seat therefor A circular body, having a throughgoing orifice, an externally threaded periphery, and a pair of stepped recesses, defines a valve seat for a reciprocating piston. A retaining ring is made fast in one of the recesses, and a seal which contracts upon coolin... | 07/22/1997 |
| 5634624 | Quick disconnect coupler with selectively insertable valve assembly A quick disconnect coupler for releasably coupling pipes which incorporates a valve assembly including a valve sleeve, a ring surrounding the sleeve, a spring for resiliently urging the ring relative to the sleeve and a valve seat carried by the ring, whi... | 06/03/1997 |
| 5485983 | Seal apparatus for a flow control valve A gas metering valve is provided for selectively providing a series of different calibrated gas flow rates. The valve includes a valve body having a gas inlet, a gas outlet, a chamber situated between the gas inlet and gas outlet. The valve also includes ... | 01/23/1996 |
| 5360198 | Valve for clean chemical reactor A vessel including an emptying means which comprises a valve housing means integral with and fixed to the vessel; a valve body means removably mounted to the valve housing means; a means for sealing the valve body means to the valve housing means; and a v... | 11/01/1994 |
| 5297580 | High pressure ball and seat valve with soft seal A valve seat for a ball valve of a positive displacement pump for producing fluid from a subsurface formation wherein the valve seat is provided by a valve assembly having a non-corrosive hollow metallic housing therein which may have an internal radial g... | 03/29/1994 |
| 5294092 | Quick disconnect coupler A quick disconnect coupler includes a seal retaining member movably mounted in a coupler housing. A sealing washer biases the retaining member toward first position, and an annular seal is mounted in the retaining member. This annular seal defines both ax... | 03/15/1994 |
| 5170993 | Ball valve for fluids with seats comprising laminated rings Ball valve for fluids, with sealing seat comprising rings, disposed between the spherical surface of the valve and the interior of the valve body, composed of rings formed of superimposed layers of plates of graphite alternating with plates of stainless s... | 12/15/1992 |
| 5167398 | Quick disconnect coupler A quick disconnect coupler includes a seal retaining member movably in a coupler housing. A sealing washer biases the retaining member toward first position, and an annular seal is mounted in the retaining member. This annular seal defines both axial and ... | 12/01/1992 |
| 5074524 | Quick disconnect coupler A quick disconnect coupler includes an annular seal which is mounted in a fixed axial position to the housing of the coupler and which defines three sealing surfaces axially separated along the length of the coupler. The three sealing surfaces are configu... | 12/24/1991 |
| 5069423 | Valve for clean chemical reactor A vessel including an emptying means which comprises a valve housing means integral with and fixed to the vessel; a valve body means removably mounted to the valve housing means; a means for sealing the valve body means to the valve housing means; and a v... | 12/03/1991 |
| 4942902 | Mixing cartridge faucet with parts that can apply pressure to the valve plates of hard material A mixing faucet for hot and cold water including a cartridge 40 which contains a fixed valve plate 32 and a movable valve plate 23, both constructed of hard ceramic material, and both constructed to control the proportion of mixing and the flow that comes... | 07/24/1990 |
| 4926895 | Socket assembly A retainer ring holds parts of a socket assembly against relative movement. The retainer ring is disposed in an outwardly facing groove in a first socket part and an inwardly facing groove in a second socket part. A resilient seal ring is compressed betwe... | 05/22/1990 |
| 4892289 | Letdown valves A letdown valve for slurries under pressure is provided with a throttle 13 inside a housing 15 with interposed lubricant sealer and grooves 16 to accommodate any excess lubricant sealer. The throttle body 13 is held in place by a retaining ring 17 which i... | 01/09/1990 |
| 4887629 | Plug valve and method of assembly An eccentric plug valve and method for assembly wherein the valve utilizes a replaceable valve seat which is placed against a gasket held in a groove about a rim of a valve opening within the valve body and the valve seat is held in position by means to f... | 12/19/1989 |
| 4877219 | Pipe fitting A pipe fitting capable of minimizing flow resistance, decreasing force required for connection and preventing leakage of fluid therethrough. An operating sleeve slidably mounted on a main member of a socket body is forcedly thrusted and a connecting membe... | 10/31/1989 |
| 4811929 | Needle valve seat A valve seat having a tubular valve seat wall portion that extends about a frusto-conical valve member that moves longitudinally into the valve seat to close a valve in which the seat and valve member are included. Coaxial openings are formed through the ... | 03/14/1989 |
| 4793590 | Piloted check valve A piloted check valve includes a closure that is pressure balanced to relieve pressure on non-metallic seat when valve is closed against high pressure differential. The closure includes a disc having a stem moving in a sealed chamber communicating through... | 12/27/1988 |
| 4781213 | Ball check valve A ball check valve assembly for chemical pumps. A fluid conduit terminates at a first surface in a port of circular cross section. Within the conduit, an O ring seat is aligned with the port; an elastomeric O ring is positioned in the seat. Spacer means, ... | 11/01/1988 |
| 4773627 | Gate valve An improved gate valve for effective sealing regardless of the pressure of the fluid of the conduit to which the valve is attached. The gate valve comprises a body (20) having opposing upstream and downstream sides (46, 44). Each side has a conduit-joinin... | 09/27/1988 |
| 4766927 | Abrasive fluid control valve with plastic seat A valve to control abrasive fluids under high pressure has a plastic seat. A circular ridge peripherally formed on the valve cartridge sealingly engages the seat. A means is provided within the valve cartridge to support the seat axially and radially. The... | 08/30/1988 |
| 4724862 | Drain valve There is disclosed an automatic drain valve which consists of a control block with a central bore and a coaxial inlet bore. The central bore and the inlet bore are divided from each other by a seal which is seated in the inlet bore and held in place by a ... | 02/16/1988 |
| 4722508 | Valve on processing plant In a valve on a processing plant in the chemical apparatus field, which has a valve housing, a feed flange and a discharge shaft, together with a valve seat arranged in the vicinity of the feed flange and an associated valve cone, at least the contacting ... | 02/02/1988 |
| 4718457 | Diverter valve A diverter valve has a "Y" shape with a single inlet and two branch passageways formed at a confluence region of the "Y". A double sealing member paddle is pivoted on a shaft and located at the confluence of the two branches. The branches each have a repl... | 01/12/1988 |
| 4667696 | Flow valve An adjustable nonreturn ball valve for connection in a pipeline includes an elongate unobstructed main housing arranged to be connected at each end to flow pipes. There is an auxiliary housing located intermediate the ends of the main housing which has a ... | 05/26/1987 |
| 4651971 | Direct acting valve assembly A direct acting valve assembly including a valve body and a guide tube attached thereto. An insert is secured within the guide tube and includes a central aperture and at least one filtering aperture. The valve body includes an annular surface between an ... | 03/24/1987 |
| 4603838 | Ball valve seat A ball valve seat is provided which comprises two separate reinforcement members, preferably of metal, embedded in an annular resilient body. The interior of the resilient body defines at one end a part-hemispherical ball valve seat and at its other end, ... | 08/05/1986 |
| 4561634 | Seal of a cylinder head of an internal combustion engine A sealing arrangement of the cylinder head with respect to the cylinder block by means of a flat seal which is constructed as intermediate plate and extends from the edge of the cylinder bore also up to its cylinder axis; essentially only circular opening... | 12/31/1985 |
| 4558844 | Direct acting valve assembly A direct acting valve assembly including a valve body and a guide tube attached thereto. An insert is secured within the guide tube and includes an upraised valve seat surrounding a central aperture. The valve body includes an annular surface between an a... | 12/17/1985 |
| 4538640 | Multiposition selector valve A multiposition selector valve of the rotary type includes a valve body having a single inlet port and a plurality of outlet ports. Fluid communication between the inlet port and any one of the outlet ports is provided via a check valve assembly mounted o... | 09/03/1985 |
