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| Number | Title | Issue Date |
| 7341238 | Device for locking out a pressurized storage container and method for the same A device and method for locking out an explosion suppressor that includes a discharge valve with a load end and a discharge end. The load end and the discharge end define a discharge path therethrough. The discharge valve includes a side opening transverse of the di... | 03/11/2008 |
| 7281443 | Manual control device Manual actuating device for the actuation of an appliance, subjected to a force in a direction opposite to the actuation direction, especially in the production of mineral oil or natural gas, such as a blowout preventer (BOP), valve, actuator, throttle or similar, w... | 10/16/2007 |
| 7275564 | Pigging ball valve A pigging ball valve with a housing and ball core supported for rotation within the housing. The ball core sits on a valve seat, which is supported by a seat carrier. The valve seat carrier has three distinct diameters that locate the seat in the housing and thus pr... | 10/02/2007 |
| 7051760 | Three-way inline piggable branch valve A multi-port valve device to divert flow of a fluid from a piggable transfer pipe line into a branch pipeline, and simultaneously prevent a line clearing device (known as a pig or cleaning sphere) from flowing with that fluid into the branch pipeline. This device ca... | 05/30/2006 |
| 7032882 | Valve assembly having novel flow characteristics A valve assembly including a housing having a flow channel and an annular surface surrounding the flow channel, a slide plate movable to a closed position, and a seal ring positioned between the annular surface and the slide plate. The seal ring includes a first and... | 04/25/2006 |
| 7011409 | Method of manufacturing spectacles with lenses An object of this invention is to improve the safety. Lens bodies 2, 2a are formed integrally on the rear surface of a shield so as to avoid such a danger that the eyes may be injured due to drop or separation of the lens bodies 2, 2a. | 03/14/2006 |
| 7004453 | Pendulum valve with a full range of position control Embodiments of the present invention provide a pendulum valve with a full range of normal position control. The pendulum valve can include a valve housing having a flow channel, and a valve body that is movable within the valve housing between a fully open position ... | 02/28/2006 |
| 6997041 | Dual slide gate valve and method for using same A method and device for pressure testing a pipe line is provided wherein a fitting is inserted into the pipeline by inserting male ends of the pipeline into female ends of the fitting to define a flow path through the fitting extending along a longitudinal axis. The... | 02/14/2006 |
| 6968779 | Apparatus and methods for wire-tying bundles of objects Systems and methods for threading and feeding a length of wire into a wire-tying track, for withdrawing at least some of the wire from the wire-tying track to tension the wire around one or more objects, and for extracting waste wire from the system. The object of t... | 11/29/2005 |
| 6938876 | Ball valve with retractable seals and method of replacement thereof A ball value has a valve body defining a cavity, a ball closing component disposed within the cavity through a cavity opening, a cover, and seal assemblies having seating rings with seals disposed engaging both sides of the ball closing component. The seating rings ... | 09/06/2005 |
| 6935365 | Rotary slide A rotary slide for medium-carrying pipelines is proposed, comprising a housing (1) capable of being installed between two pipeline ends and having a stop member (9) for shutting off the pipeline and having an actuating device (8) for actuating t... | 08/30/2005 |
| 6863256 | Seal ring for pendulum valve assembly A valve assembly including a housing having a flow channel, a slide plate movable between a closed position and an opened position, and a seal ring surrounding the flow channel and engaging the slide plate in the closed position and disengaging the slide plate in th... | 03/08/2005 |
| 6431518 | Vacuum valve A vacuum valve comprises a valve opening which is provided in a valve housing and can be closed by a valve plate arranged at least one valve rod, at least a first piston-cylinder unit by which the valve plate is displaceable from its open position releasi... | 08/13/2002 |
| 6425570 | Ball valve having retractable sealing member A ball valve having an upstream seat (92) with the seat actuated by outside pressure (14, 16). Retraction members (100, 102) continuously urge seat (92) to a retracted position out of sealing engagement with the ball. A sealing member (104) fits loosely w... | 07/30/2002 |
| 6298879 | Stem valve stopper A stem valve stopper that has a shell (1) intended to be mounted to a faucet (K). An operating stem (8) is mounted for rotation but is axially fixed in the stopper shell (1) and has a lower end that acts as a valve seat surface (12). The stem 8 has an int... | 10/09/2001 |
| 6260490 | Burner isolation valve for pulverized fuel systems A burner isolation valve or gate for use in the coal-delivery pipes of coal-fired power plants. Safety regulations often require that two valves be placed in the coal delivery line between a combustion chamber and an exhauster or pulverizer type deliver s... | 07/17/2001 |
| 5718410 | Small flow control valve with cartridge type seating arrangement A small flow control valve with cartridge type seating arrangement is shown and described. A conventional valve housing with inlet and outlet ports and a seat ring cartridge. A plug with a lower throttling profile engages within the seat ring bore. A defo... | 02/17/1998 |
| 5618024 | Slide valve A slide valve for pipelines for the transporting of slide-laden gaseous or liquid fluids comprises a slide-valve housing within which a displaceable closure member rests in closing position with its closure surface against an inflated annular packing (66)... | 04/08/1997 |
| 5611516 | Rotary ball valve with retracting seat In a preferred ball-valve construction, a valve body has spaced inlet and outlet ports on an axis of flow that is controlled by an interposed ball; the ball is rotatable about a body-fixed axis which intersects the axis of flow at the geometric center of ... | 03/18/1997 |
| 5577707 | Slide valve A slide valve including a housing having a flow channel, a slide plate for controlling flow through the channel, and a seal ring surrounding the flow channel and engaging the slide plate in its closed position and disengageable from the slide plate in its... | 11/26/1996 |
| 5445359 | Gate valve A gate valve [10] is disclosed having a primary [300, 302] and secondary [316] seal on the upstream and downstream sides of the gate [15], wherein the gate [15] forms a seal with the seat [300] which is activated mechanically [320] and is fluid powered, a... | 08/29/1995 |
| 5413310 | Valve arrangement Valve, in particular large ball valve for use in oil and gas installations, of the kind comprising a valve member (2) having a through flow passage (6), a movable seat or seal holder (8, 9) and means (11, 12) for moving the holder in directions towards an... | 05/09/1995 |
| 5374028 | Quick-action flap This quick-action flap (1) is provided with a housing body (2), with a service opening (4) let into the housing body (2), with at least two bearing positions (17) for a driven shaft (16), which bearing positions are machined into the housing body (2), and... | 12/20/1994 |
| 5330156 | Seal arrangement for valves A sealing arrangement for a valve or shaft is disclosed which is designed to respond to movements of a rotatable element in a particular manner and to increase sealing pressure with increasing fluid pressure. The seal undergoes a radial compressive type m... | 07/19/1994 |
| 5322261 | Arrangement in closing valves A shutoff or closing valve, especially a ball valve, comprises a valve body (2) having at least one annular sealing surface formed for sealing engagement against a seal (5) carried by an axially displaceably supported seat ring (3). The seat ring (3) or e... | 06/21/1994 |
| 5311902 | Reciprocating compressor valve A reciprocating positive displacement compressor is described having an intake or exhaust valve provided with a deformable seal means, such as a Belleville spring, that makes edge or area contact with a valve seat in the closed condition of the valve, is ... | 05/17/1994 |
| 5253843 | Retractable-gasket valve having two stiffnesses The retractable-gasket ball valve includes sealing means fixed on the valve body, and including, in particular, a gasket for providing sealing between the shutter member and the valve body when the shutter member is in a closed position, and further inclu... | 10/19/1993 |
| 5247964 | Valve with redundancy on closing A valve with redundancy on closing comprises a single valve body, first and second substantially hemispherical hollow valve members disposed inside said valve body, each including an orifice allowing fluid to pass therethrough, independent first and secon... | 09/28/1993 |
| 5246041 | Slide gate and dust cover operator and seal assembly Apparatus for providing a dust free environment in the filling and discharge of bins and other containers is disclosed. The apparatus includes a dual seal which seals directly against a gate assembly. The invention also provides for the introduction of ai... | 09/21/1993 |
| 5176189 | Device for transport of material between chambers at different pressures and process for operation of this device A device for transport of material between chambers at different pressures, comprises a feed chamber, a main chamber having an upper housing with an inlet and a lower housing with an outlet. The feed chamber is coupled to the main chamber at the inlet, an... | 01/05/1993 |
| 5117858 | Top entry ball valves with cam adjustable seats A top entry ball valve comprises a housing having an interior cavity sufficiently large to receive a conventional ball and conventional seat rings through an opening in the housing. After the ball/seat package has been inserted into the cavity, a cam arra... | 06/02/1992 |
| 5111839 | Airplane toilet drain valve assembly An improved airplane toilet drain valve assembly comprising a rotatable valve mounted within a housing and a moveable sealing member which is arranged in contact with the valve surface when the valve is in a closed position and which during operation of t... | 05/12/1992 |
| 5101853 | Device for shutting of pipelines for transport of bulk products The device comprises a housing with a circular passage orifice, a pivoting closing element in the form of a spherical dome and a circular gasket surrounding the said orifice and mounted on an annular support axially displacable towards the closing element... | 04/07/1992 |
| 4962911 | Hemi-wedge valve The present invention is directed to an improved valve comprising a valve housing, a fluid path therethrough, a seat disposed about the fluid path, a rotatable, curved wedge disposed in the fluid path, an actuator for rotating the wedge between its closed... | 10/16/1990 |
| 4923171 | Gate valve having a secondary seal A gate valve is disclosed having a secondary seal, wherein the gate forms a metal to metal seal with the seat and wherein a resilient seal is moved toward the gate in a closed position to form a secondary fluid-tight seal with the gate. A device for deene... | 05/08/1990 |
| 4869285 | Flow selector device A flow selector device makes use of an annular plate having a plurality of flow control orifices spaced about its perimeter. The plate is rotatably received within a housing that includes a first fluid conduit formed therein. The plate is selectively rota... | 09/26/1989 |
| 4844410 | Adjustable seat assembly for a valve There is provided a seat assembly adapted to be received in a spool bore of a valve having a fluid controlling member for controlling the flow of fluid through the valve, with the spool bore having a threaded interior portion. The seat assembly includes a... | 07/04/1989 |
| 4838520 | Valve for a vacuum enclosure A valve for a vacuum enclosure, the valve comprising a valve body (1) which is hollow about an axis Ɗ and which opens out to the outside via two opposite end openings (24, 25) of the valve body, thereby enabling the valve to be inserted in a pumping circ... | 06/13/1989 |
| 4795132 | Seals A sealing assembly (20) for a ball valve comprises two non compressible and relatively movable members, for example the ball (24) and seal housing (26) of a ball valve, having located therebetween a sealing element (32) which is inflatable by the introduc... | 01/03/1989 |
| 4770202 | Valves providing transfer ports A valve body 10 supports a rotary valve member 20 having a transfer port 22. Sealing between a port 17 of the valve and the member 20 is achieved by a sleeve 30 movable towards and away from the member 20. In a valve closed position seal means in a flat e... | 09/13/1988 |
