| Entries |
| Document | Title | Date |
|---|
| 20090020719 | LINEAR MOTION-TYPE GATE VALVE - A gate valve includes a valve plate for opening and closing a gas passageway, and an air cylinder and a shaft for linearly moving the valve plate between a main housing portion and a storage housing portion of a housing, and the air cylinder is arranged on the first lateral surface side of the housing in parallel with a moving direction of the valve plate, and the shaft is arranged so as to overlap with the valve plate in parallel with the moving direction. A tip end of the shaft is coupled with the valve plate at a position situated near a front end portion in the moving direction thereof. | 01-22-2009 |
| 20090026404 | Injection Molding Valve Gate System and Activating Mechanism - A valve gate system for an injection molding machine, having a valve gate unit configured to be in contact with a manifold of an injection molding machine for delivering a molten plastic flow from a hot runner system to an injection chamber. The valve gate unit has a valve pin for controlling the flow of the molten plastic from a hot runner system to an injection chamber and an activating unit coupled with the valve gate unit. The activating unit is configured to be mounted external to a mold unit that houses the injection chamber. In addition, the activating unit has an element that extends through the mold unit to engage the valve pin, so as to control the molten plastic flow from a runner system to an injection chamber. | 01-29-2009 |
| 20090032763 | Fixed Cone Sleeve Valve Having Ribs Downstream of the Gate for Supporting the Cone and Other Components of the Valve - A valve comprises a housing, a conduit, and a shut-off member, and a plurality of ribs. The conduit is fixed in position relative to the housing. The ribs are spaced from the conduit. The shut-off member is fixed in position within a cavity of the housing via the ribs. The gate has a fluid passageway extending therethrough and is movable relative to the shut-off member between opened and closed positions. The gate is able to linearly reciprocate between opened and closed positions along the center axis of the conduit. The gate is engaged with the shut-off member when the gate is in the closed position in a manner preventing fluid from flowing through the fluid passageway of the gate. The opened position of the gate allows fluid to flow through the fluid passageway of the gate. | 02-05-2009 |
| 20090057596 | Pendulum valve having independently and rapidly controllable theta-and z-axis motion - A Pendulum Valve having Independently and Rapidly Controllable Theta- and Z-axis Motion. The valve actuator used in the present invention provides the benefit of wide open unrestricted flow of a pendulum valve coupled with the high-resolution and wide dynamic range flow throttling of a ball or butterfly valve. The actuator mechanism will include motor drives and associated control system so that the drives are closely coupled to give highly controlled motion. The drive assembly introduces a concentric shaft arrangement that, when coupled with the highly controllable motor drives, exploits a cam-follower arrangement to make the relative rotation between the two concentric shafts result in highly controlled theta and z-axis motion. Finally, the plate to seal spacing afforded is greater than previously possible with prior valve actuator mechanisms, thereby substantially reducing flow turbulence through the valve as the valve plate eclipses the valve ports. | 03-05-2009 |
| 20090095932 | Knife Gate Valve - A gate valve apparatus includes an inlet side panel, and outlet side panel defining a ring recess on its inner face. The panels are fastened together and the valve gate moves between the panels. A seat ring defines a seat ring aperture and is positioned in the ring recess and oriented such that fluid pushing on the front face of the gate seals the gate against the seat ring. Removable ring fasteners countersunk below the inner surface of the seat ring extend into the outlet side panel. Removable inlet and outlet wear rings are positioned in the corresponding inlet and outlet passages, and the inner end of the outlet wear ring extends into the seat ring aperture to cover the fastener heads. The inlet and outlet wear rings have an inside diameter equal to an inside diameter of the inlet and outlet conduits. | 04-16-2009 |
| 20090095933 | GATE VALVE WITH REPLACEABLE INSERTS AND METHOD OF REFURBISHING SAME - A gate valve includes a valve body having a cylindrical passage defining a flow path through the valve, a gate for controlling fluid flow through the valve and a replaceable wear-resistant flow-path liner for in the flow path. The flow-path liner includes a plurality of replaceable wear-resistant inserts, including wear sleeves lining ports of the valve body, valve seats and a gate insert for a flow path bore through the gate. Each replaceable valve seat has a wiper ring for cleaning the gate when it opens and closes. By regularly inspecting and replacing worn-out inserts, the service life of the gate valve can be prolonged and the expense associated with replacing or rebuilding the valve body is avoided. | 04-16-2009 |
| 20090108226 | VALVE ELEMENT UNIT AND GATE VALVE APPARATUS - To provide a valve element unit and a gate valve apparatus which realize a reduction in manufacturing cost by a compact and simple structure and smooth rotary driving of the valve element without greatly moving the valve element in the direction of the center of rotation when the valve element is rotary driven. | 04-30-2009 |
| 20090159828 | Valve Gate Piston Retention Device - A piston and valve stem assembly is held in either a gate open or gate closed position by a valve gate piston retention device until such time as sufficient air pressure is built up behind the piston, upon which the valve gate piston retention device is signaled to release the piston. The piston, being pre-charged, is thereby able to overcome both static and dynamic friction thus allowing it to move freely and immediately, and in the case of multiple pistons, simultaneously or sequentially, and without hesitation. Both simultaneous or sequential retention and release of the piston via mechanical or electromagnetic means can be controlled to actuate a plurality of pistons forward or back in an expeditious manner to overcome pneumatic losses and frictional forces in an effort to achieve more precise timing of the valve stem and optimize overall cycle time. | 06-25-2009 |
| 20090166573 | Method of Shutting Off Conduit and Pipe Conduit Shutoff Apparatus - To enable efficient and easy attachment of a shutoff operation cover at a proper attaching position relative to two joining flange portions and also to restrict deformation in a leading end portion of a gate plate valve. A shutoff operation cover B is attached to two pipe portions | 07-02-2009 |
| 20090212250 | LOCKOUT VALVE - A lockout valve operable to control fluid between two components is provided. The lockout valve includes a housing having a flow passage, an intake port, an outtake port, and an exhaust port selectively in communication with the flow passage. The lockout valve further includes a slide slidably mounted to the housing between an open position and a closed position. The slide includes a vent disposed and a through port extending through the slide. When the slide is in the open position, the through port is disposed between the intake port and the outtake port, providing a passage for fluid. When the slide is in the closed position, the vent is fittingly disposed between the intake port and the outtake port so as to prevent fluid from flowing downstream the lockout valve and to allow fluid pressure downstream the lockout valve to escape through the exhaust port. | 08-27-2009 |
| 20090250648 | Gate Valve for Vacuum Apparatus - Even when a gate valve for a vacuum apparatus used in a vapor deposition apparatus is in an open position, reliability of keeping a vapor deposition chamber vacuum can be improved by protecting an inner wall surface of a valve casing and a sealing member of a valve body against a vapor of a vapor deposition material. A gate valve ( | 10-08-2009 |
| 20090256099 | GATE VALVE WITH EQUALIZER PORT - A gate valve has a gate movable between open and closed positions within a valve body, and walls in the gate defining an equalizer port between opposite sides of the gate. The equalizer port is adapted and arranged to be shiftable by actuation of the gate between closed and opened positions and between opened and closed positions. | 10-15-2009 |
| 20090267012 | Sliding Valve - The invention relates to a slide valve, especially for controlling a flow of catalyst or like high-temperature media, having a pipe portion ( | 10-29-2009 |
| 20100044611 | 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 to permit fluid flow. In the closed position, the holes do not register with the fluid aperture to prevent fluid flow. The split gate valve also has a gate guide located in the body for moving the gates with respect to the valve seats along the fluid axis. The gate guide forces the pair of gates apart along the fluid axis and into contact with the valve seats in both the open and closed positions. The gates have axial play along the fluid axis when the split gate is between the open and closed positions. | 02-25-2010 |
| 20100065769 | SLIDE VALVE - The invention relates to a slider | 03-18-2010 |
| 20100102263 | Recessed Cutting Edge For Wire Cutting Gate Valves - A gate valve having a body, a chamber housed in the body, a passage through the body that intersects the chamber, a gate for selectively opening and closing the valve, and a cutting edge on the gate. The cutting edge can sever any lines that may be in the valve and still seal after closing. The gate includes a recess formed to collect cuttings formed while severing the line. | 04-29-2010 |
| 20100224814 | GATE VALVE WITH LUBRICATED SECONDARY SEAL - A gate valve includes a pair of opposing housing members, a gate, primary sealing sleeves and a secondary sealing member. The primary sealing sleeves are disposed in each of the housing members. The gate is configured to slidably pass through a transverse gate chamber defined when the housing members are joined together. The secondary sealing member is secured between the housing members and includes at least one passage or aperture configured to allow lubricating fluid to be applied through at least one of the housing members through the secondary sealing member and onto the gate. | 09-09-2010 |
| 20100224815 | Slide Valve, In Particular for Blocking a Line Conveying Media - A slide valve, in particular for blocking a line conveying media, comprises a multi-part housing ( | 09-09-2010 |
| 20100224816 | GATE VALVE WITH LUBRICATED SECONDARY SEAL - A gate valve includes a pair of opposing housing members, a gate, primary sealing sleeves and a secondary sealing member. The primary sealing sleeves are disposed in each of the housing members. The gate is configured to slidably pass through a transverse gate chamber defined when the housing members are joined together. The secondary sealing member is secured between the housing members and includes at least one passage or aperture configured to allow lubricating fluid to be applied through at least one of the housing members through the secondary sealing member and onto the gate. | 09-09-2010 |
| 20100264349 | DOUBLE-DISC GATE VALVE - A double-disc gate valve is provided, the shut-off or valve discs of which are displaceable from an open position into a closed position and vice versa by means of an actuator rod, there being associated with the actuator rod a locking device by means of which the valve discs, together with the actuator rod, are fixable in the closed position. The locking device is movable in the longitudinal direction of the actuator rod relative thereto from an unlocking position into a locking position and vice versa, the locking position being variable in dependence upon the closed position of the valve with predetermined maximum pressing force of the valve discs against the associated valve housing sealing seats. | 10-21-2010 |
| 20100301252 | Universal Valve System - The universal valve disclosed herein operates as both an actuated and non-actuated valve embodiment, both of which are assembled using a common universal valve body. When functioning in the actuated valve embodiment, the invention includes components which open a small orifice to provide pressurization or de-pressurization before the disk is lifted off the seat and the poppet valve is opened. | 12-02-2010 |
| 20110140027 | GATE VALVE - A gate valve and a method for making a gate valve for use with abrasive fracturing fluids, include provided enlarged spaces in the gate valve body wherein sand or other debris from the fracturing fluid may accumulate without affecting the operation of the gate of the gate valve. | 06-16-2011 |
| 20110248202 | NON-DRIPPING SLIDING DIVERTER VALVE - A sliding diverter valve. The value includes a body portion with a bore having a diameter, an untreated fluid inlet, an untreated fluid spigot outlet, an untreated fluid diverter outlet, a treated fluid inlet, and a treated fluid spigot outlet. The valve further includes a slider which slides in the bore of the body portion and which, (a) in a first, untreated fluid position, directs untreated fluid to flow from the untreated fluid inlet to the untreated fluid spigot outlet and which blocks any fluid from exiting the untreated fluid diverter outlet and any treated fluid from entering the treated fluid inlet, and (b) in a second, treated fluid position, directs untreated fluid to flow from the untreated fluid inlet to the untreated fluid diverted outlet and which blocks any fluid from exiting the untreated fluid spigot outlet, and permits treated fluid to flow into the treated fluid inlet and out of the treated fluid spigot outlet. | 10-13-2011 |
| 20120001113 | CARBURETOR AND METHODS THEREFOR - A carburetor having an inlet opening that includes a pair of concavities operative to direct air toward the metering rod of the carburetor. A carburetor having an inlet opening that includes an arcuate manifold adjacent to the inlet opening and in fluid communication with a fuel reservoir. A carburetor having a slide assembly that includes a positioning mechanism operative to adjust the position of the metering rod relative to the throttle slide. A throttle slide that includes a flow guide that bisects an arcuate relief on an underside thereof. A method for configuring the throat of a carburetor that includes an upper portion of a first diameter and a lower portion of a second diameter that is offset from the first diameter. The method comprises deriving an optimum size for the first and second diameters and the offset based on the pumping efficiency and operating parameters of the engine. | 01-05-2012 |
| 20120061605 | GATE VALVE - In one embodiment, a gate valve is provided that includes a seal plate disposed in a housing. An inflatable biasing member is retained on a first side of the seal plate and is positioned to surround a first opening formed through the housing. A ring seal is retained on a second side of the plate opposite the first side and is positioned to surround a second opening formed through the housing. At least one of the inflatable biasing member and the ring seal are adapted to create a vacuum seal around the first and second openings, respectively, when the inflatable biasing member is inflated. | 03-15-2012 |
| 20120080633 | CONTROL VALVE - A control valve includes a hollow valve body, a valve plug and a block mechanism. The valve body defines a valve chamber, an inlet hole, two outlet holes and two connecting holes. The inlet hole, the two outlet holes and the two connecting holes communicate with the valve chamber, respectively. The valve plug is slidably assembled within the valve chamber of the valve body, and operating in one of three different working states of the control valve. The valve plug defines a first lock slot, an intermediate slot and a second lock slot. The block mechanism is adjustably assembled to the valve body and selectively received and engaged in one of the first lock slot, the intermediate slot or the second lock slot, in which each position of the valve plug establishes one of the three working states of the control valve. | 04-05-2012 |
| 20120085957 | Gate Valve - A gate valve comprises a valve body having an internal working fluid passage and an internal gate chamber extending transverse to the working fluid passage. In addition, the gate valve comprises a gate disposed in the internal gate chamber and movable within the gate chamber between a closed position obstructing fluid flow through the working fluid passage and an open position allowing fluid flow through the working fluid passage. Further, the gate valve comprises an internal sealing arrangement coaxially disposed in the working fluid passage and extending between the valve body and the gate to form a barrier between the internal working fluid passage and the gate chamber. The internal sealing arrangement includes a frustoconical metal sealing surface adapted to sealingly engage an opposed mating frustoconical metal sealing surface on the valve body to form a first tapered metal-to-metal seal between the sealing arrangement and the valve body. | 04-12-2012 |
| 20120280163 | Septic leach line control apparatus - A septic leach line control apparatus comprising a hollow housing with tapered continuous sidewalls extending from a top to a wider base at the bottom. The hollow housing includes a flange extending outwardly from the base and a wider inner flange extending inwardly from the base within the housing. The inner flange defines a vertical elongated opening conformed to engage a pipe or similarly configured conduit, which has a top end and a bottom end. Also provided is a gate valve assembly, including a gate valve, a gate valve housing, and a gate valve handle assembly with a handle attached to an elongated rod at one end and to the gate valve at the other end. The rod with the attached handle extends through the pipe into the hollow housing. The bottom end of the pipe at least partially, if not entirely, encloses the gate valve assembly, or at the very least, the uppermost section of the gate valve housing. The top end of the pipe seals off the juncture where the pipe connects to the vertical elongated tubular opening. | 11-08-2012 |
| 20130026407 | MULTI-SEAL KNIFE GATE VALVE - In order to compensate for the drawbacks of metal sheet-type knife gate valves having excellent durability but poor sealing capability, and of rubber sheet-type knife gate valves having good sealing capability but poor durability, and to retain the strengths of the two valve types, the present invention provides a multi-seal-type knife gate valve having good sealing capability and excellent durability. The multi-seal knife gate valve of this invention includes: a valve body coupled to a pipe; a disk inserted into the valve body to move vertically; and a valve sheet pressed against the disk so as to maintain a tight seal, wherein the disk installed in the valve body moves vertically to open or close a passage through which fluid flows, and the valve sheet is pressed against the disk and includes at least one metal sheet and one rubber sheet to maintain a seal. | 01-31-2013 |
| 20130056670 | Gate Valve With Equalizer Port - A gate valve is comprised of a gate movable between open and closed positions within a valve body, and gate having defined through it an equalizer port or passageway between opposite sides of the gate with fixed side walls. The equalizer passageway being is opened and closed by an internal gate. The internal gate is in a close fitting engagement with each of a pair of opposing valve seats mounted with the gate and is shiftable by a carrier that does not constrain movement of the internal gate as it sits between the valve seats. | 03-07-2013 |
| 20130087733 | GATE VALVE, METHOD FOR RETURNED DRILLING MUD PRESSURE CONTROL AND/OR WELL KILLING, AND USES OF A GATE VALVE - A gate valve is provided for returned drilling mud pressure control and/or well killing. The gate valve includes a flow passage; and a gate member movable for intersecting the flow passage. The gate member includes a gate port which extends from one face to an opposite face of the gate member and is alignable with the flow passage for allowing material in the flow passage to pass through the gate member, and a groove or recess is provided in an inner wall of the gate port, the groove or recess extending from the one face to the opposite face of the gate member. A method is provided for returned drilling mud pressure control and/or well killing, and uses of a gate valve. | 04-11-2013 |
| 20130092862 | Seal System - A slide gate for controlling fluid flow having improved slide gate seals. | 04-18-2013 |
| 20130214191 | KIND OF GATE VALVE - a kind of gate valve is provided by the present invention, comprising a valve body, a knife switch and a driving device, the valve body being provided with a media passage, and the knife switch being connected to the driving device and being driven to full open or close the media passage by the driving device, characterized in that the driving device comprises a driving source and a cross bar, wherein the driving source is connected with a center section of the cross bar, and both ends of the cross bar are respectively connected to the two ends of the knife switch via connectors. The present invention has advantages such as favorable tightness. | 08-22-2013 |
| 20130334451 | WEAR RING RETAINER FOR A GATE VALVE - The present invention is directed to improved valves having removable interior wear rings secured by a removable retainer ring. In particular, the invention is directed to gate valves having removable interior wear rings that are easily removed from one side of the gate valve upon removal of a retainer ring. The retainer ring is held in place within the valve housing by combination of compressive and shear forces. | 12-19-2013 |
| 20140054487 | VALVE OPERATOR ASSEMBLY WITH ANTI-BACKDRIVING DEVICE - A high efficiency operator assembly is for a valve for controlling flow through a passage, the valve including a closure element movable between a closed position at which the member substantially obstructs the passage and an open position. The operator assembly includes a movable stem having opposing ends, a first end being connectable with the closure element such that displacement of the stem moves the closure element between the open and closed positions. A stem driver is rotatable about a central axis, engaged with the stem, and configured to displace the stem when the driver angularly displaces about the axis and an input device is rotatable about the axis. A lock mechanism or a clutch is engageable with the stem, the stem driver, or the input device to retain the closure element at a particular position when the input device remains at a particular angular position about the input axis. | 02-27-2014 |
| 20140061524 | Valve With At Least Two Active Positions - A valve with at least two active positions is disclosed. When set in a first position, the valve can be connected to a first channel. While set in a second position, the valve can be connected to a second channel. The valve constitutes a part of a structure of a compressor, preferably a compressor in a tire repair kit. The tire repair kit also includes a cassette with a sealing mass. The valve serves as a rotary valve, which, once set in the first position, forms a channel through which compressed air flows to an outlet. Once set in the second position, the rotary valve forms the other channel through which compressed air flows to the cassette with a sealing mass. By using the rotary valve, the compressor is useful not only for connecting to a punctured tire requiring repair, but also for other purposes. | 03-06-2014 |
| 20140110619 | VALVE - A valve includes a gate and an actuator. The gate has a gate opening with a first seal fixed to the gate and positioned along a periphery of the gate opening. The gate also has a blocking portion with a second seal fixed to the gate and positioned along a periphery of the blocking portion. The actuator is configured to move the gate between an open position and a closed position, wherein the gate opening is aligned to a chamber opening in a chamber wall and the first seal engages a sealing surface of the chamber wall in the open position and wherein the blocking portion is aligned to the opening in the chamber wall and the second seal engages the sealing surface of the chamber wall in the closed position. The valve is capable of operating in harsh environments. | 04-24-2014 |
| 20140197347 | VALVE WITH SYNC CAM - Valves include a valve body having an inner surface and an outer surface, the inner surface and the outer surface defining an inlet, an outlet, and a body cavity between the inlet and the outlet; a gate movably coupled to the valve body and moveable over a portion of the valve body at least partially between the inlet and the outlet, the gate including a cam stop; and a drive assembly, the drive assembly including a drive shaft and a sync cam, the sync cam of the drive assembly movably positioned on the drive shaft and slidably positioned relative to the cam stop. | 07-17-2014 |
| 20140217320 | Gate Valve - A gate valve system for controlling fluid flow having a valve body with a bore through which fluid can flow. The system includes a valve body having a bore to allow fluid to pass through the valve body and further having a cavity defined by substantially parallel innerside walls of the valve body, a gate wherein at least one end of the gate is defined by a radius perimeter. The system also has a bonnet that is removably coupled to a face of the valve body, wherein a portion of an innerside of the bonnet includes a curved surface adapted to mate with the at least one end of the gate defined by the radius perimeter, and an actuation mechanism operationally positioned and removably connected to the gate by way of a thru-hole in the bonnet. | 08-07-2014 |
| 20140231691 | HIGH TEMPERATURE GATE VALVE - A high temperature gate valve includes a valve body, a valve element configured to open and close a flow path, and a guide member which is provided in the valve body and guides the valve element in an opening/closing direction. The valve body includes a valve body main portion and a bonnet portion. The valve element slides along the opening/closing direction guided by the guide member. The valve element at a shut-off position blocks the flow path by projecting into the valve body main portion, and at an open position retracts into the bonnet portion. The guide member is divided into a plurality of divided guiding elements along the opening/closing direction, and each of the divided guiding elements are welded to an inside of the valve body. | 08-21-2014 |
| 20140264130 | ISOLATION GATE - A gate comprising a frame and a blade. The frame defines an opening that is adapted to be opened and closed, and the blade is associated with the frame such that the blade is adapted to open and close the opening. For such purpose, the blade is adapted to move along a path defined by the frame between an open position and a closed position. | 09-18-2014 |
| 20140374640 | REGULATING VALVE AND METHOD FOR PRODUCING THE SAME - Regulating valve ( | 12-25-2014 |
| 20150076385 | SLIDE VALVE APPARATUS FOR AUTOMATIC APPLICATION OF SURFACE PRESSURE - A slide valve apparatus for automatic application of surface pressure is configured to include a connection switching device ( | 03-19-2015 |
| 20150292629 | CONTROL VALVE - Provided is a valve, including an in-line flow passage, a shut-off mechanism, and a multi-stage throttling section disposed in the in-line flow passage. Further provided is an in-line valve, including a flow control component and a sealing component, wherein the flow control component and the sealing component are separate from one another. | 10-15-2015 |
| 20150337967 | EXPLOSION-PROOF SLIDING GATE VALVE FOR BLOCKING A FLUID FLOW IN A PIPELINE - An explosion-proof sliding gate valve ( | 11-26-2015 |
| 20150345660 | METHODS AND APPARATUS TO REDUCE SHOCK IN A SLIT VALVE DOOR - Embodiments disclosed herein generally relate to apparatus and methods for sealing a vacuum chamber with a slit valve assembly that in one embodiment includes a housing having side walls and at least one substrate transfer port formed therein, the housing having an interior volume defined by the side walls, a slit valve door disposed within the housing and positionable between an open position clear of the substrate transfer port and a closed position sealing the substrate transfer port, and a bumper assembly disposed on an edge of at least one face of the slit valve door, the bumper assembly comprising a first bumper member made of a first material and a second bumper made of a second material that is different than the first material. | 12-03-2015 |
| 20160003363 | VALVE, IN PARTICULAR A VACUUM VALVE - A valve having a closure member which is pressed against a valve seat in a closed position and closes an opening, and having a first valve drive for moving the closure member along a first movement path back and/or forth between a maximum open position and an intermediate position, and having a second valve drive for moving the closure member along a second movement path back and/or forth between the intermediate position and the closed position. The first movement path and the second movement path are arranged in an angled manner with respect to one another. The valve additionally includes at least one locking device with at least one locking body which interacts with at least one inclined surface and/or comprises at least one inclined surface, wherein the locking body is movable relative to the closure member along a third movement path between a locking position and a releasing position. | 01-07-2016 |
| 20160039372 | ACTUATOR RETAINER - An actuator retainer according to the present disclosure includes a platform with a first latch projecting upward, a second latch spaced from the first latch and a locating projection projecting upward from the platform. | 02-11-2016 |
| 20160186868 | VALVE DEVICE - A valve device switching between an open position and a close position, the open position allowing passage of oil through a gap between two ports in a spool bore from a small-diameter portion of a spool via a notch formed in a large-diameter portion of the spool, the close position blocking passage of oil through the gap between the two ports by the large-diameter portion, wherein the notch of the large-diameter portion has an inner bottom face at a portion located on a center side of the spool and is open to an outer peripheral space of the small-diameter portion and an outer peripheral surface of the large-diameter portion, and is formed such that an opening width of an opening at the outer peripheral surface is larger than a width of the inner bottom face. | 06-30-2016 |
| 20160201296 | HYDRAULIC VALVE | 07-14-2016 |
