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| Number | Title | Issue Date |
| 8002238 | Valve having a sealing member A valve has a closure member for closing a valve orifice, particularly so as to be tight against gas, in a closed position of the closure member. The closure member can be moved in a closing process by at least one actuator starting from a first position of maximum ... | 08/23/2011 |
| 7980529 | Vacuum gate valve having a limb element A vacuum gate valve includes a closure disk for gas-tight closing of an opening. A connecting rod with which the closure disk is coupled is linearly adjustable by means of a linear drive unit and the closure disk is thus displaceable between a position uncovering th... | 07/19/2011 |
| 7975983 | System, method and apparatus for split gate valve with mechanically isolated seal surfaces A split gate is movably mounted within a valve body along a valve axis between valve seats. The split gate has gates, each extending between one of the valve seats and the other gate. In an open position, gate holes register with a fluid aperture and the valve seats... | 07/12/2011 |
| 7780143 | Gate valve An object is to provide a gate valve capable of preventing operational deficiencies caused by particulate materials accumulating in a valve box, thus providing superior sealing properties and high durability, having a simple structure, and allowing inspection and ma... | 08/24/2010 |
| 7766305 | Rectangular gate valve A rectangular gate valve having an improved driving action is disclosed. The rectangular gate valve of the present invention includes a sealing member, which opens or closes a wafer moving passage, a main shaft, which is coupled to the sealing member and has a guide... | 08/03/2010 |
| 7281700 | Gate valve apparatus for vacuum processing system A gate valve apparatus includes a valve body to open and close a target object transfer port in a vacuum processing system. The valve body is reciprocated in a first direction relative to the transfer port. A support rod is connected to the valve body and extends in... | 10/16/2007 |
| 7258256 | Surface pressure load device of slide valve A surface pressure releasing plate and a surface pressure releasing bar are slidable relative to each other smoothly by compressing compression springs uniformly. A surface pressure applying device for a slide valve according to the present invention compresses comp... | 08/21/2007 |
| 7234679 | Gate valve A gate valve has a transfer chamber-side valve element and a process chamber-side valve element connected to a single shaft. A rotary latch pivotably supported on an inner surface of one of the valve element with the rotary latch having a latch surface at a forward ... | 06/26/2007 |
| 7163191 | High pressure gate valve A high-pressure gate valve for control of bulk materials includes a main body with an opening for passing bulk material, an upper body, a slideable blade, and lifting structure configured to raise the blade in a planar motion, perpendicular to the primary direction ... | 01/16/2007 |
| 7156369 | Valve control device The device (1) comprises a support structure (2) in which at least a first opening (8, 9) is defined, a shutter (13) which is mounted for piloting in that structure (2) and which is adapted to take up a least a first and a second a... | 01/02/2007 |
| 7066443 | Gate valve A gate valve has a transfer chamber-side valve element and a process chamber-side valve element connected to a single shaft actuated with a single three-position air cylinder to selectively close a process chamber opening and a transfer chamber opening or fully open... | 06/27/2006 |
| 7025330 | Bar-stock ball valve A barstock body fluid control valve comprising a barstock body of preselected material having an inlet end and an outlet end, and a preselected cross section defining the outer walls; a through machined main flow port located eccentrically on the inlet and the outle... | 04/11/2006 |
| 7011295 | Vacuum regulating valve A vacuum regulating valve is capable of precisely controlling the flow of a fluid so that the flow rate may increase gradually in an initial stage of a valve opening operation. The vacuum regulating valve includes a valve casing having a valve chamber and provided w... | 03/14/2006 |
| 7007919 | Slit valve method and apparatus An actuator assembly for a slit valve door is configured to maintain a slit valve in a closed condition notwithstanding a high pressure differential between adjacent chambers that the slit valve isolates from each other. The slit valve door actuator assembly include... | 03/07/2006 |
| 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 |
| 6994317 | Regulating vacuum valve A regulating vacuum valve comprises a valve housing with a through-channel, first and second valve plates which lie in adjacent and parallel planes and are mounted so as to be adjustable in their planes and can be moved into the through-channel from different sides ... | 02/07/2006 |
| 6776394 | Pendulum valve assembly A valve assembly including a housing having an opening defined by a valve seat, a valve body movable within the housing between a completely opened position disengaged from the valve seat and a completely closed position engaging the valve seat, and a sleeve movable... | 08/17/2004 |
| 6736368 | Gate valve A gate valve having a valve body, a valve rod, a regulation device, a cam mechanism and a drive for supplying a straight-move force to the cam mechanism is provided. The valve rod is held so that it can move in a straight-move direction of opening and closing the va... | 05/18/2004 |
| 6565066 | Gate valve A gate valve includes: a valve plate; a valve rod which the valve plate is fixed to and is supported to be able to tilt; a seal bellows and a dust sealing portion; a stopper member; a tilting cam mechanism which converts supplied straight moving force int... | 05/20/2003 |
| 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 |
| 6237892 | Gate valve A gate valve wherein a valve disc is moved to a position where the valve disc is brought into contact with a valve seat and a position where the valve disc is separated from the valve seat by a driving device provided outside of a valve housing through a ... | 05/29/2001 |
| 6089537 | Pendulum valve assembly A pendulum valve assembly comprises a housing including an interior space and a pair of openings through which fluid can enter and exit the interior space; a valve seat disposed in the interior space around the edge of a first of the openings; a disk moun... | 07/18/2000 |
| 6082706 | Non-sliding vacuum gate valve A non-sliding vacuum gate valve according to the present invention has a curved cam lead member provided to end of a valve rod, and a pair of rollers provided to a connection rod. The cam lead member and the rollers are engaged with each other and move re... | 07/04/2000 |
| 5934646 | Gate valve and cylinder apparatus A gate valve in which the structure is simplified and inexpensive, movement of a valve body is smooth and high in speed, a force of inclination moving the valve body is strong, and a sealing property of an opening portion can be improved. The gate valve h... | 08/10/1999 |
| 5927684 | Slide, particularly pipe bridge slide Single-plate slide, especially single-plate pipe bridge slide (10) with a slide-plate (16) and if necessary a pipe bridge (20), which is or are movable by means of an actuating device (18, 19) within this casing (11) in order to close or open a fluid pass... | 07/27/1999 |
| 5755255 | Gate valve for regulating gas flow in semiconductor manufacturing A friction-free gate valve for regulating gas flow in semiconductor manufacturing comprises a gate which, prior to being lifted up for the valve-opening position, is horizontally flitted away from the passage wall surface against which it was pressed agai... | 05/26/1998 |
| 5722636 | Double disk gate assembly for block and bleed type valves A valve gate for sealing the inlet from the outlet of a block and bleed type valve consists of two independent disk-like members which are interconnected by a slide mechanism allowing the disk-like members to be moved simultaneously forwardly in a first c... | 03/03/1998 |
| 5667198 | Gate valve for controlling the flow of viscous liquids A pivoting gate valve assembly includes a seat plate with an orifice therethrough, a stop plate and a gate. The stop plate is mounted on the seat plate and borders a portion of the orifice. The gate is pivotably mounted to the seat plate and pivots to a c... | 09/16/1997 |
| 5547167 | Gate valve for fluidized particular material A gate valve apparatus which includes a housing having a passageway defined therein for a fluent material, a generally planar gate, and apparatus for supporting the gate within the housing. The apparatus for supporting allows movement of the gate in oppos... | 08/20/1996 |
| 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 |
| 5427353 | Drilling mud circulating pit clean out gate valve A drilling mud circulating tank clean out valve is formed by a wedge-shaped valve body having an apertured planar surface secured to the wall of the circulating tank around a cleanout opening adjacent its bottom to form a fluid outlet passageway. A wedge-... | 06/27/1995 |
| 5409149 | Mixer housing gate assembly A dump gate assembly as for a feed mixer housing including first and second hinged gates swingable between upper closed condition and lower open condition, each gate having a cam track preferably in the form of a configurated gate stiffener cooperable wit... | 04/25/1995 |
| 5129622 | Spindle operated valve The invention provides a valve which comprises a body defining a passageway therethrough, a valve seat in the passage, a valve closure disposed in the passageway adjacent the valve seat, and an operating spindle projecting transversely into the passageway... | 07/14/1992 |
| 5116023 | Low vibration high vacuum gate valve A low vibration, high cycle, high vacuum gate valve structure comprises a high vacuum housing defining a passageway, a valve actuator for providing a rectilinear displacement force, a translatable and pivotable gate valve assembly actuated by the valve ac... | 05/26/1992 |
| 5013009 | Top entry valve A cryogenic gate valve having a body with a full passage formed therein. A gate has opposed faces at an acute angle with a recess formed in one face of the gate. The recess receives a sealing means that is comprised of a sealing ring having a base flange ... | 05/07/1991 |
| 5003943 | Engine air intake shutoff apparatus An engine air intake shutoff apparatus includes a frame that can be attached to and supported by an engine air intake passage such as an engine blower housing over the engine air intake passage. A baffle plate having rollers extending above its surface sl... | 04/02/1991 |
| 4972878 | Firetruck valve A high-volume, high-pressure valve is provided for attachment to the water inlet of a firetruck to receive the downstream end of the main supply hose connected to the fire hydrant. The heavy construction necessary to withstand the high pressures and rapid... | 11/27/1990 |
| 4944488 | Gate valve A high-pressure, high-temperature gate valve which uses a flat faced gate seating on a flat and preferably interchangeable seat, the gate having a wedge-shape on the upstream side which assists in forcing the seating surfaces together which is highly desi... | 07/31/1990 |
| 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 |
