Class / Patent application number | Description | Number of patent applications / Date published |
251062000 | Piston type expansible chamber reciprocating valve actuator | 72 |
20080237513 | 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 member, and a housing bracket, which has a first guide slot, into which the guide member is inserted. The gate valve further includes a valve drive unit, which is provided in the housing bracket and has an air cylinder, a piston, a piston shaft, a moving unit and a connection link. The gate valve further includes a guide bracket, which has a vertical bracket, a second guide slot and a horizontal bracket. The gate valve further includes a guide link, which is moved along the second guide slot to guide movement of the main shaft. | 10-02-2008 |
20090026394 | Volume flow regulating valve for a hydraulic system for controlling a belt-driven conical-pulley transmission - A volume flow regulating valve for a hydraulic system for controlling a belt-driven conical-pulley transmission. The valve includes a control piston with a pressure surface and an oppositely facing pressure return surface. A supply segment is associated with the pressure surface, and a cooler return segment is connectable with the supply segment by a control edge of the control piston. A pressure return segment is associated with the pressure return surface, and a pressurizing segment is situated between the cooler return segment and the pressure return segment. | 01-29-2009 |
20090173902 | PRESSURIZED FLUID CONTROL DEVICE WITH A SAFETY CLOSURE FOR A COMPARTMENT CONTAINING THE PRESSURIZED FLUID - The device comprises a body ( | 07-09-2009 |
20090230337 | HYDRAULIC CONTROL VALVE - A hydraulic control valve ( | 09-17-2009 |
20090261279 | VALVE ACTUATOR AND THROTTLE VALVE ASSEMBLY EMPLOYING THE SAME - Embodiments of a valve actuator are provided for adjusting the position of a main valve element in relation to the pressure of a fluid supplied by a supply duct. The valve actuator includes a housing, a control pressure valve disposed in the housing, and a piston slidably disposed in the housing and mechanically coupled to the main valve element. The housing has a control pressure chamber therein, which is configured to be fluidly coupled to the supply duct. The control pressure valve is configured to substantially impede fluid flow into the control pressure chamber until the fluid pressure within the supply duct surpasses a minimum actuation pressure. The piston normally resides in a first position and is configured to move toward a second position as the pressure within the control pressure chamber increases. | 10-22-2009 |
20100038566 | VALVE AND ACTUATOR ASSEMBLIES - The present application relates to valve and actuator assemblies. The valve actuator assemblies may include a capless valve actuating arrangement, include a replaceable passage defining member that includes seal members, include a valve member that is assembled in a valve chamber from an end of the valve body that is opposite an end that a piston is assembled in, and/or include a valve member that may be rotated in a valve body without affecting the ability of the valve member to perform its sealing functions. | 02-18-2010 |
20100163765 | PNEUMATIC VALVE ACTUATOR HAVING INTEGRAL STATUS INDICATION - A pneumatic valve actuator having integral status indication includes an actuator housing with a recessed bore and a visual indicator coupled to a piston within a cylinder. An actuating pressure chamber is located also within the cylinder. The piston reciprocates in the cylinder in response to fluid pressure build-up in the actuating pressure chamber, and the visual indicator reciprocates within the bore. The visual indicator coupled to the piston can be in a retracted configuration when actuating pressure is not present in the pressure chamber and can be in an extended configuration when actuating pressure is presented in the pressure chamber. The visual indicator, which can have a portion that extends outside the bore colored to provide an indication of the operating state of the valve. | 07-01-2010 |
20100243929 | BOOSTER VALVE - A booster valve comprising a housing having a signal port, an actuator port, a supply port, and an exhaust port disposed therein. Disposed within the housing are upper and lower plugs. The upper and lower plugs and the housing collectively define a signal chamber which fluidly communicates with the signal port, an actuator chamber which fluidly communicates with the actuator port, and a supply chamber which fluidly communicates with the supply port. The upper and lower plugs are selectively moveable between neutral, delivery and discharge positions. When in the neutral position, the actuator chamber is fluidly isolated from both the supply chamber and the exhaust port. When in the delivery position, the actuator chamber fluidly communicates with the supply chamber but is fluidly isolated from the exhaust port. Finally, when in the discharge position, the actuator chamber fluidly communicates with the exhaust port but is fluidly isolated from the supply chamber. | 09-30-2010 |
20100294963 | PNEUMATIC ACTUATOR, IN PARTICULAR FOR VALVES - The invention concerns pneumatic actuators for valves comprising a body closed by head flanges, two pistons moving in said body in opposite directions, an output shaft that turns actuated by the pistons, and a stop device on each head flange to limit the stroke of the pistons when they move away from each other towards the head flanges. On at least one side of the actuator body an adjusting device ( | 11-25-2010 |
20110180736 | TWO-WAY HIGH-PRESSURE SOLENOID VALVE - A solenoid-operated control valve has a primary piston and a secondary piston located within a sleeve, and a solenoid coil disposed about the sleeve to effect movement of the primary piston. The primary and secondary pistons are independently movable along the sleeve. The secondary piston defines a pilot orifice connected with a center passage. The primary piston has a seal pin that extends into the pilot orifice of the secondary piston to block and unblock the center passage with movement of the primary piston in relation to the secondary piston. A spiral cut scarf ring disposed about the secondary piston is in contact with both the secondary piston and the sleeve to allow controlled leakage of a fluid through the valve via space between the secondary piston and the sleeve. The leaked fluid is permitted to collect in a cavity between the primary and secondary pistons. | 07-28-2011 |
20110278482 | FUEL SHUT-OFF VALVES - A fuel shut-off valve includes a casing defining therein a valve chamber communicating between inside and outside of a fuel tank. A bottom wall member defines a bottom of the valve chamber and has communication holes formed therein, so that the valve chamber communicates with the inside of the fuel tank via the communication holes. A valve mechanism is disposed within the valve chamber and capable of preventing fuel from flowing from the valve chamber to the outside of the fuel tank depending of a fuel level within the fuel tank. A flow area of each of the communication holes decreases in an outflow direction of the fuel from the valve chamber to the inside of the fuel tank. | 11-17-2011 |
20120061595 | HYDRAULIC AXIAL PISTON REGULATING VALVE AND ITS APPLICATION - The present invention applies to the hydraulic axial piston regulating valve with a linear position sensor, consisting of the valve body ( | 03-15-2012 |
20120153195 | METHOD AND APPARATUS FOR AUTOMATIC FLUID SHUT-OFF - An automatic shut-off valve shuts off fluid flow in the event of abnormal amounts of fluid flow. A rotor inside the valve turns when fluid flows through the valve. The rotor causes a pneumatic pump to operate and cause increased air pressure. The increased air pressure causes a shut-off piston to move to a closed position when a predetermined air pressure is achieved. The shut-off valve also includes an adjustable bleeder needle to slowly bleed off air pressure when the fluid flow stops and thereby resets the valve. A detent is provided for holding the shut-off piston in the open position. A detent spring and compression bolt are provided for adjusting force on the detent. The shut-off valve is manually closed using a trip arm connected to the detent. The shut-off piston is reset by actuating a reset plunger that moves the piston back to the open position. | 06-21-2012 |
20120193557 | SHUTOFF FITTING - A shutoff fitting as protection device for blocking a fluid flow through a conduit includes a pneumatic adjustment device, and a hybrid gas generator operably connected to the adjustment device. The hybrid gas generator has a reaction chamber with a gas generator and a pressure gas chamber containing compressed gas and arranged adjacent to the reaction chamber. An inlet diaphragm separates the reaction chamber from the pressure gas chamber and is can be penetrated, when the gas generator is activated, so that a passage is established from the reaction chamber to the pressure gas chamber. An outlet diaphragm closes the pressure gas chamber and is rendered ineffective through destruction when the gas generator is activated to enable compressed gas to flow into the adjustment device. | 08-02-2012 |
20120286178 | VACUUM VALVE BELLOWS - A bellows is disposed to separate a main flow path that is opened or closed by a valve member coming into contact with or moving away from a valve seat from a driving part for driving the valve member via a rod so as to surround the rod. The bellows is formed by providing ring-shaped valley portions swelling inward of a metal pipe and ring-shaped peak portions swelling outward of the metal pipe alternately and continuously in a peripheral wall of the metal pipe in the axial direction of the metal pipe. Valley R/peak R, which is the ratio of valley R to peak R, is in the range of 1.15 to 1.70, where valley R is the radius of curvature of the valley portions in cross section, and peak R is the radius of curvature of the peak portions in cross section. | 11-15-2012 |
20130207011 | Driving and Adjusting Device of Passive Shuttle-Type Shut-Off Valve - A driving and adjusting device of a passive shuttle-type shut-off valve is provided. The problems of a big valve body structure size, a non-random angle installment, a single drive mode, low stability and reliability, a high temperature and poisonous material entering into the driving and adjusting device and unadjustable on-off speed and low volume in the prior device are solved. A main body ( | 08-15-2013 |
20130214185 | VALVE ACTUATOR WITH VENT - The present application relates to valve and actuator assemblies. The valve actuator assemblies may include a capless valve actuating arrangement, include a replaceable passage defining member that includes seal members, include a valve member that is assembled in a valve chamber from an end of the valve body that is opposite an end that a piston is assembled in, and/or include a valve member that may be rotated in a valve body without affecting the ability of the valve member to perform its sealing functions. | 08-22-2013 |
20130234055 | DUAL PISTON PNEUMATIC ACTUATOR - Dual piston pneumatic actuators used in opening and closing gate valves are disclosed. The actuators allow for pressure to vary based on opening or closing a gate valve versus keeping the gate valve open or closed. | 09-12-2013 |
20130240765 | FREQUENCY UNIT VALVE - A frequency unit valve is provided. In the frequency valve, a free piston reciprocates within a housing where a sub-valve is mounted in a lower portion. Variable frequency units installed above and under the free piston provide a damping characteristic by selectively opening or closing a passage when a frequency of a piston rod is in a high-frequency region and a low-frequency region. Accordingly, the vehicle ride comfort is maximally improved. | 09-19-2013 |
20130248741 | PISTON VALVE WITH BUILT IN FILTRATION - A control valve includes particle and moisture accumulation inhibiting features. The control valve includes a piston that provides for pressure communication to a back cavity through a tortuous path that settles out particle matter carried within the airflow. Moreover, the piston includes drainage openings that direct moisture out of piston and away from the sealing surfaces. | 09-26-2013 |
20140034856 | PNEUMATIC CONTROL VALVE AND ASSEMBLING METHOD THEREOF - To provide a pneumatic control valve including: a valve body | 02-06-2014 |
20140131597 | VALVE - A valve mechanism, which constitutes a solenoid valve as one example of a valve, includes a valve plug that is displaced in an axial direction under an excitation action of a solenoid unit, and is equipped with a flexible diaphragm disposed between a valve body and an annular groove formed on an outer circumferential surface of the valve plug. The diaphragm is flexible accompanying displacement of the valve plug and includes first through third projections on an inner edge portion thereof. In addition, the first through third projections are capable of coming into abutment, respectively, against an inner circumferential surface, a first wall surface, and a second wall surface of the annular groove. Further, the inner edge portion is inserted in the interior of the annular groove while being movable slightly in the direction of displacement of the valve plug. | 05-15-2014 |
20140231682 | FLOW REGULATING DEVICE - A flow regulating device | 08-21-2014 |
20140291559 | Slide Valve Having a Valve Slide - A slide valve having a valve slide which can be acted on by an actuator in a first direction, and by an impingement device in a second direction which is opposite the first direction, and which may hydraulically connect a first working connection to an inlet connection or to an outlet connection, and a second working connection to the inlet connection or to the outlet connection, with the aid of control sections. A control section associated with the first working connection has a diameter stage and/or an axially extending groove and/or an axially extending flattened portion, so that when the actuator does not act on the valve slide, the first working connection is hydraulically connected to the outlet connection with the aid of the diameter stage and/or the groove and/or the flattened portion. | 10-02-2014 |
20140299801 | MAGNETORHEOLOGICAL FLUID DEVICE - A system, including a flow control system, including a valve, a first cylinder including a piston coupled to the valve, wherein the piston moves axially within the first cylinder to transition the valve between open and closed positions, a magnetorheological (MR) fluid within the first cylinder configured to axially move the piston, and an MR fluid device configured to magnetize the MR fluid to control axial movement of the piston. | 10-09-2014 |
20140346379 | BACKFLOW PREVENTION VALVE - A valve assembly includes an outer housing having a first opening in fluid communication with a first fluid, a second opening in fluid communication with a second fluid, a third opening in fluid communication with a third fluid and a fourth opening in fluid communication with a fourth fluid. The valve assembly includes a piston configured to slide within the outer housing into a first position at which the third opening is blocked from fluid communication with the fourth opening based on a fluid pressure of the first fluid being greater than a fluid pressure of the fourth fluid. The piston is further configured to slide within the outer housing into a second position at which the third opening is in fluid communication with the fourth opening based on the fluid pressure of the second fluid being greater than the fluid pressure of the fourth fluid. | 11-27-2014 |
20150008348 | BULLET VALVE FOR CONTROLLED FLUID FLOWS | 01-08-2015 |
20150060708 | BELLOWS VALVE WITH VALVE BODY CYLINDER ADAPTER - A valve having a valve body with a valve cavity that receives an axially extensible member, for example, a bellows. An adapter has a diameter that is less than the diameter of the valve cavity and greater than the diameter of the extensible member, so that the adapter is disposed between the valve body and the extensible member. The adapter forms a valve body compression seal and a compression seal for the extensible member. Use of the adapter allows a common valve body to be used with different sized bellows of different lengths and diameters as needed, as well as facilitates easy installation and replacement of the bellows. | 03-05-2015 |
20150060709 | SPRUNG GATE VALVES MOVABLE BY A SOLENOID ACTUATOR - A sprung gate for a valve having an endless elastic band sandwiched between first and second gate members that each define an opening therethrough in an open position portion thereof, which collectively form a passage through the sprung gate. The first gate member includes a fastener connected to a fastener receiving member of the second gate member thereby securing the first and second gate members together as a unit. This sprung gate unit is operatively connected to an actuator for linear translation within a pocket of a conduit to control fluid flow through the conduit. This assembled device may be manufactured using spin welding to sealingly mate the conduit to a housing enclosing the actuator. | 03-05-2015 |
20150076377 | POWER BOOST ASSIST CLOSED DEVICE FOR ACTUATORS - An apparatus for assisting an actuator to close a valve has a cylindrical booster housing with a central axis. The booster housing includes an upward facing piston cavity and a downward facing lower cavity with internal threads for selectively coupling with external threads of a piston head of a valve actuator. A bulkhead is formed between the piston cavity and the lower cavity. The bulkhead has an opening for selectively accepting an actuator stem of the valve actuator therethrough. A booster piston is located within the piston cavity. The booster piston has a piston mounting means located on its bottom side for selectively securing a top end of the actuator stem of the valve actuator to the booster piston. The booster piston is moveable upwards in an axial direction to move the valve from a lower open position to an upper closed position. | 03-19-2015 |
20150308584 | VALVE - A valve with an opening surrounded by a seat, and a closure member, which, in a closed position, presses onto the seat and closes the opening and, in an intermediate position, is raised from the seat and overlaps with the opening and, in a maximum opening position, at least partially releases the opening. The valve has a frst valve drive for moving the closure member between the maximum opening position and the intermediate position along a first movement track, and a second valve drive for moving the closure member between the intermediate position and the closed position along a second movement track which is at an angle to the first movement track. The valve has at least one transmission part which is provided for reversible deformation by the second valve drive, and the first valve drive acts on the closure member with the interposition of the transmission part. | 10-29-2015 |
20150375722 | Valve of a Piston Pump having a Two-Part Closing Body - A valve of a piston pump for a vehicle brake system has a closing body which is resiliently preloaded against a sealing seat. The closing body is formed in two parts with a damping piston and a closing element inserted therein. The damping piston is axially displaceably guided in a cylindrical piston guide. At least one flow channel is provided between the damping piston and the piston guide. The at least one flow channel is configured such that fluid can flow around the damping piston in the longitudinal direction thereof through the at least one flow channel. | 12-31-2015 |
20160131023 | A PNEUMATIC ACTUATOR HAVING A PRESSURE RELIEF WINDOW - A pneumatic actuator ( | 05-12-2016 |
20160178083 | Fluid-operated drive | 06-23-2016 |
20160201810 | DOUBLE SEALING VALVE | 07-14-2016 |
20170234451 | BACKFLOW PREVENTION VALVE | 08-17-2017 |
20170234452 | DEGRESSIVE PNEUMATIC ACTUATOR SPRING RATE | 08-17-2017 |
251063000 | Unitary piston and valve | 7 |
20090032748 | Overfill protection device (OPD) - An overfill protection device includes a piston ( | 02-05-2009 |
20090101854 | HYDRAULIC CONTROL VALVE FOR HEAVY EQUIPMENT - A hydraulic control valve for heavy equipment is provided, which includes a valve body having a supply passage supplied with a hydraulic fluid from a hydraulic pump, ports for supplying the hydraulic fluid to an actuator or receiving the hydraulic fluid from the actuator, tank passages for returning the hydraulic fluid from the actuator to a hydraulic tank, and a first regeneration passage for supplying a part of the returned hydraulic fluid to the supply passage; a spool slidably installed in the valve body in accordance with supply of a pilot signal pressure from an exterior, and controlling flow of the hydraulic fluid supplied to the actuator from the supply passage during shifting; and a regeneration valve installed between the first regeneration passage and the tank passage, and including a piston moved by the hydraulic fluid from the hydraulic pump, a regeneration spool shifted by pressure fluctuation of the supply passage to variably adjust a flow rate of the hydraulic fluid discharged from the first regeneration passage to the tank passage via a return passage, a first resilient member for resiliently supporting the regeneration spool in a direction opposite to a shifted direction of the regeneration spool, and a pilot piston for resiliently supporting a set pressure of the first resilient member. | 04-23-2009 |
20100148099 | SHIFT ACTUATOR VALVE HAVING A PRESSURE DEAD BAND - A valve assembly having a pressure dead band includes a first valve or sleeve slidably disposed within a valve body. A second valve is partially slidably disposed within the first valve and partially slidably disposed in the valve body. A plurality of fluid passages communicate with the valve assembly and provide a first flow of hydraulic fluid and a second flow of hydraulic fluid. A lower threshold of the pressure dead band is defined by the pressure on the combination of the first area of the first valve and the first area of the second valve required to balance the resultant force developed on the second area of the second valve. An upper threshold of the pressure dead band is defined by the pressure on the first area of the second valve required to balance the resultant force developed on the second area of the second valve. | 06-17-2010 |
20120126155 | Portable remote controlled valve - A portable remote controlled fire-fighting valve has a central chamber in a main valve body, an inlet that connects to a hydrant, an outlet that connects to a fire hose, a valve mechanism that has a seating surface that seats against part of the device to open and close a flow channel through the central chamber, and a remote controller that enables an operator to selectively open and close the flow channel. The valve mechanism uses a piston that is mounted for axial movement within the central chamber. The piston has an annular wall that slides against an outer edge of a lateral chamber surface that is fixed in position within the main valve body. A spring biases the piston to the closed position. In the open position, water from the inlet flows around the piston, over its peripheral surface, to the outlet. A pressure chamber is formed between a lateral surface that is fixed in position within the valve body and a movable interior surface on the piston. A pilot channel extends from an upstream side of the flow channel to the pressure chamber. The remote controller selectively controls a pilot valve on the pilot channel, allowing liquid in the upstream side of the flow channel to flow to the pressure chamber and force the piston open. | 05-24-2012 |
20150316170 | MULTIPLE PISTON PRESSURE INTENSIFIER FOR A SAFETY VALVE - Disclosed are subsurface safety valves having multiple pistons used to increase the opening force. One safety valve includes a housing having a piston bore defined therein and configured to receive hydraulic fluid pressure, the piston bore providing an upper bore having a first diameter and a lower bore having a second diameter smaller than the first diameter, a piston assembly movably arranged within the piston bore and comprising an upper piston arranged in and configured to sealingly engage the upper bore and a lower piston arranged in and configured to sealingly engage the lower bore, and a connecting rod coupling the upper and lower pistons, wherein a cavity is defined between the upper and lower pistons within the piston bore and the piston rod extends within the cavity. | 11-05-2015 |
20160169030 | VALVE FOR A TURBOMACHINE | 06-16-2016 |
20160186884 | ACTUATING DEVICE AND METHOD FOR ACTUATING A VALVE - An actuation apparatus includes a housing and a piston. The housing has an inlet for a pneumatic or hydraulic actuation medium to pass into at least one piston space of the housing. The piston is movably arranged in the piston space. The piston can be moved by the actuation medium at least between an open position and a closed position, such that a valve can be actuated at least by movement from the open position into the closed position. In the closed position, the piston and the housing are in operative connection with one another such that a seal is formed downstream of the inlet for sealing the piston space for the actuation medium. At least the regions of the piston and of the housing in operative connection have a modulus of elasticity greater than 10 kN/mm2. | 06-30-2016 |
251630400 | Lost motion, abutment or resilient connection between actuator and valve | 3 |
20110068285 | Automatic Increased-Suction Relief Apparatus - An automatic vacuum-relief apparatus for liquid suction systems includes a vessel defining a chamber filled with liquid in communication with a liquid flow line, a rotary shaft extending through the chamber to support a valve device adjacent to the liquid flow line and to move the valve device to open a relief-air flow channel to relieve increased suction caused by inlet blockage, and a piston on the rotary shaft responsive to suction increases within the liquid flow line and chamber to actuate shaft rotation. The valve device, chamber and relief-air flow channel are configured and arranged to cause a spurt of liquid from the chamber into the inlet while the valve device is moving from its isolating position toward its opening position upon inlet blockage, whereby the spurt of liquid pushes the blockage away from the inlet and the relief air reduces the suction. The valve includes a liquid-flow barrier secured with respect to the liquid flow line such that the barrier is in an open position allowing flow of liquid from the inlet to the outlet during normal operation and in a closed position isolating the inlet from the outlet in response to suction increases upon inlet blockage. | 03-24-2011 |
20140097365 | ROTATABLE ACTUATOR SHAFT - Disclosed herein are apparatuses and methods of preventing rotational stress on the top shaft of valve actuators. Certain methods and apparatuses include a bifurcated top shaft. Other apparatuses and methods include a method of preventing rotational stress at the distal end on the top shaft of an actuator. | 04-10-2014 |
20140319389 | Automatic Increased-Suction Relief Apparatus - An automatic vacuum-relief apparatus for liquid suction systems includes a vessel defining a chamber filled with liquid in communication with a liquid flow line, a rotary shaft extending through the chamber to support a valve device adjacent to the liquid flow line and to move the valve device to open a relief-air flow channel to relieve increased suction caused by inlet blockage, and a piston on the rotary shaft responsive to suction increases within the liquid flow line and chamber to actuate shaft rotation. The valve device, chamber and relief-air flow channel are configured and arranged to cause a spurt of liquid from the chamber into the inlet while the valve device is moving from its isolating position toward its opening position upon inlet blockage, whereby the spurt of liquid pushes the blockage away from the inlet and the relief air reduces the suction. The valve includes a liquid-flow barrier secured with respect to the liquid flow line such that the barrier is in an open position allowing flow of liquid from the inlet to the outlet during normal operation and in a closed position isolating the inlet from the outlet in response to suction increases upon inlet blockage. | 10-30-2014 |
251630500 | Coaxial actuator, seat and valve | 25 |
20080251744 | REMOTE ADJUSTABLE SHOCK ABSORBER - A modified mono-tube shock is a lighter shock with less rod pressure, less seal drag, a greater range of valving, and faster heat dissipation. The shock includes an outer body, a shaft piston, a plurality of deflective discs, and a divider piston, wherein the divider piston is installed at a particular location inside the shock to create a gas chamber. | 10-16-2008 |
20080265189 | PNEUMATIC POWERED COAXIAL VALVE WITH MAGNETIC ENTRAINMENT - The invention concerns a coaxial valve, particularly for the delivery of chemically aggressive fluids in the pharmaceutical and medical sectors and also for use in the food industry. The opening and closing of the valve is achieved in a combined pneumatic and magnetic actuating system, realised with the help of a pneumatic piston-actuator and an obturator positioned in parallel chambers, separated and constrained one to the other by means of permanent magnets for the movements of the obturator in opposite opening and closing directions in response to the movements of the piston-actuator caused by a fluid under pressure. | 10-30-2008 |
20090184273 | Self Adjusting Valve Catch With Valve Seating Control - A variable valve actuation system to actuate and control the seating velocity of an internal combustion engine valve is disclosed. The system comprises: a housing having a bore formed therein; an outer piston slidably disposed in the bore, said outer piston having an internal hydraulic passage, an internal chamber defined by an outer piston side wall, and an internal orifice connecting the internal hydraulic passage and the internal chamber; a catch piston slidably disposed in the outer piston; and a cone-shaped extension extending from the inner piston, wherein the cone-shaped extension is adapted to provide a variable flow area through the outer piston orifice to provide improved engine valve seating. | 07-23-2009 |
20100193717 | HEATER BUILT- IN VALVE - A heater built-in valve usable even under a high-temperature condition beyond 200° C. is provided. | 08-05-2010 |
20130270467 | VALVE MANIFOLD - A valve manifold includes a valve body carrying pairs of laterally spaced piston actuated valves controlled by control modules operative to selectively pressurize and exhaust an outlet port connected to a fluid device and configured in groupings permitting varying valve functionalities. | 10-17-2013 |
20140077109 | FLUID CONTROL VALVE - In a fluid control valve, a valve part houses a diaphragm in a valve body including a valve seat, first and second ports, and a drive part includes a piston dividing a piston chamber in a cylinder body into first and second chambers, and a rubber sealing member attached to the outer peripheral surface of the piston. A constriction is provided between the piston chamber and the surface of the cylinder body contacting the valve body. The cylinder body is formed with an exhaust port communicating with the first chamber, an operation port communicating with the second chamber, and a purge port communicating with a fluid non-contact chamber. The piston is formed with a flow path which enables communication between the first chamber and the fluid non-contact chamber. Accordingly, a temperature increase of the drive part can be restricted, and degradation of internal parts can be prevented. | 03-20-2014 |
20140183383 | VALVE - A valve for use in conjunction with an application device having a valve housing and a valve spindle which bears a sealing element at a first free end outside the valve housing and, within the valve housing, is mounted displaceably between a closed position and a release position. The valve spindle includes at least one first piston element and at least one second piston element, wherein the first piston element is guided in a first piston space and the second piston element is guided in a second piston space, said piston spaces being bounded by the valve housing. A pressure fluid can be supplied in each case to the first piston space and to the second piston space in such a manner that a force acting in the same direction is exerted on the first piston element and on the second piston element. | 07-03-2014 |
20150076378 | Actuator - A valve actuator assembly having an actuator housing coupled to a bonnet and a housing lid. A hydraulic cylinder is positioned within the actuator housing and directly coupled to the bonnet. A piston is positioned within the hydraulic cylinder and coupled to a spring lifter assembly and a spring is positioned within the actuator housing and having a first end and a second end, the first end being coupled to a lower surface of the housing lid, and the second end being coupled to the spring lifter assembly. An operating stem is coupled to the piston and positioned in a channel extending through the bonnet to a valve body assembly. | 03-19-2015 |
20150144817 | SHUTOFF VALVE - A shutoff valve, in particular for shutting off a paint conducting channel in a painting plant, includes a shutoff body, a pressure-operated stroke piston movable in an opening direction, thereby moving the shutoff body from a closed position into an open position; and a piston stop limiting a stroke travel of the stroke piston in the opening direction, and being adjustable to assume different working positions along the opening direction. | 05-28-2015 |
251630600 | Coaxial spring biasing means between valve and actuator | 16 |
20080203338 | ACTUATOR ASSEMBLY WITH ROTATIONAL COUPLER IN-LINE WITH ROTATIONAL VALVE SHAFT - An actuator assembly including an actuator housing assembly having a linear drive mechanism disposed at least partially therein. A linear variable differential transducer (LVDT) is coupled to the linear drive mechanism and configured to eliminate rotation of the linear drive mechanism and provide linear positioning of the linear drive mechanism. A valve shaft is coupled to the linear drive mechanism and in substantially linear alignment with the linear drive mechanism. A rotational coupler, in the form of a helical groove and reciprocating guide member, is formed to couple the linear drive mechanism to the valve shaft. The valve shaft is configured to allow for the linear displacement therein of the linear drive mechanism and thereby output a rotation moment via the rotational coupler to the valve shaft. | 08-28-2008 |
20080210895 | Pressure Relieved Thermal Regulator for Air Conditioning Application - According to one embodiment of the invention, a control valve for regulating temperature comprises a conduit, a fluid limiter, a restoring actuator, an opening actuator, and a restoring actuator chamber. The conduit has an inlet, an outlet, and an opening between the inlet and the outlet. The inlet is operable to receive fluid into the conduit and the outlet is operable to dispense of fluid out of the conduit. The fluid limiter is operable to at least partially cover the opening and thereby resist flow of fluid through the opening. The restoring actuator is operable to provide a force that moves the fluid limiter toward the opening to resist flow of fluid through the opening. The opening actuator is operable to provide a second force that moves the fluid limiter away from the opening to allow the flow of fluid through the opening. The opening actuator is activated based on a temperature of fluid in the conduit. The restoring actuator chamber is disposed around the restoring actuator and has a passage in communication with fluid upstream of the opening. | 09-04-2008 |
20080230729 | Valve With Cushioned Opening System - A valve including a valve body having an inlet port and an outlet port, a valve stem, a valve seat, an opening control chamber for the valve stem, which chamber, by being fed with fluid, urges the valve stem to move towards the open position of the valve, a return spring of opposing effect, and a piston suitable for sliding in the body so as to urge contact to be established between the valve stem and the seat. The valve seat is formed on the piston, which piston is provided with a bore in which the valve stem is in its closure movement, the fluid flows out via a constriction from a damping chamber. | 09-25-2008 |
20080283783 | PROCESS AND DISPOSITIVE OF AUTOMATIC SEALING FOR PIPING EXITS - This industrial patent has as purpose to facilitate the installation and/or removal process of equipments when these are in an exit of piping | 11-20-2008 |
20100025601 | POPPET VALVE WITH SLOPED PURGE HOLES AND METHOD FOR REDUCING A PRESSURE FORCE THEREIN - A poppet valve is disclosed that includes a valve body, a poppet guide disposed inside the valve body so as to form a flow passage from an inlet to an outlet of the valve, a poppet shutter disposed inside the poppet guide, and a biasing member to bias the poppet shutter away from the poppet guide toward an inside surface of the flow inlet so as to block the flow passage. The poppet valve further includes at least one discharge hole placing an inner chamber of the poppet guide in flow communication with a region of low static pressure of the flow passage. A method for reducing a closing pressure force acting on a poppet shutter of a poppet valve is also disclosed. | 02-04-2010 |
20100038567 | SUCK-BACK VALVE - A suck-back valve having an open/close valve with a suck-back function is provided. The suck-back valve includes a suck-back chamber formed in a valve internal channel of the open/close valve, a piston shaft portion and an open/close pressuring member to apply pressure to a valve piece, bellows that accommodate the piston shaft portion inside and that are connected to the open/close pressuring member at one end and are supported by a casing at the other end, wherein a two-step operation is performed at the time of a closing operation of the valve piece, including a valve closing operation step in which the piston shaft portion moves to the fully closed position of the valve piece, and a suck-back operation step in which the piston shaft portion and the open/close pressuring member further move from the fully closed position of the valve piece to increase the volume of the suck-back chamber. | 02-18-2010 |
20100224807 | MULTIPLE FLOW-RATE DISPENSING VALVE AND METHOD - The present invention overcomes deficiencies in the art. A valve device is provided that includes a valve body defining a chamber for receiving fluid to be dispensed from the valve device, a seal contact surface located on the valve body, near a location where fluid discharges from the chamber, one or more grooves within the seal contact surface, and a reciprocatable piston rod supporting a seal that selectively contacts the seal contact surface, the piston rod being received at least partially within the chamber. The groove and seal have structural configurations that prevent the seal from fully blocking the groove when the piston rod is in a first position where the seal contacts a portion of the seal contact surface including the groove, and as a result fluid within the chamber may enter the groove when the piston rod is in this first position. A method of dispensing fluid in variable amounts is also provide that includes the steps of providing a valve device as described above, repeatedly moving the piston from the first position to the second position, thus allowing fluid within the chamber to enter the groove and then be swept out of the valve device in a dropwise manner. | 09-09-2010 |
20110220819 | ACTUATOR - An actuator for a rotary function element, having a housing with at least one pressure means supply and being closed at both sides by a cover, in which housing a piston is guided to reciprocate in a sealing manner, the piston containing diametrically opposed, convolution-like connecting links for a transverse axis of an actuator shaft rotatably mounted in one cover, and having two guide rods Firmly anchored in the housing only at one end and engaging into guides in the piston, with the one guide rod anchored in one cover, whereas the other guide rod is anchored in the other cover, and the two guides end blind in the piston in opposite directions. | 09-15-2011 |
20120280153 | VALVE WITH AT LEAST ONE CLOSING BODY - A valve, particularly a vacuum valve, with at least one closing body to close at least one penetrating opening of the valve and a drive to adjust the closing body between a closed position, in which the closing body closes the penetrating opening, and at least one opened position, in which the closing body at least partially releases the penetrating opening. The drive includes a first volume, which can be impinged with pressure, to adjust the closing body into its closed position and for adjusting it to an opened position, with the valve additionally having an elastic element, which pre-stresses the closing body in a direction of its closed position or its opened position. | 11-08-2012 |
20130020513 | VEHICLE COOLANT CONTROL VALVE - An object is to provide a vehicle coolant control valve having excellent response, small size and weight, and low power consumption. A coolant stop valve (vehicle coolant control valve) valve comprises a valve body for controlling the flow of a fluid, the valve body having a magnetic body; a coil spring (urging device) for moving the valve body in the closing direction; a valve seat capable of coming in contact with the valve body; and a solenoid for moving the valve body in the closing direction; wherein the valve body is moved in the opening direction by fluid pressure of a fluid discharged from a water pump (pump) during operation of the water pump (pump), against the movement force of the coil spring (urging device) in the closing direction. | 01-24-2013 |
20130168582 | VALVE ACTUATOR - The valve actuator ( | 07-04-2013 |
20130181148 | AIR-OPERATED VALVE - The present invention is directed to provide an air-operated valve suitable for use in a form using a one-touch joint. A casing | 07-18-2013 |
20140138564 | COMBINATION DIAPHRAGM PISTON ACTUATOR - An actuator for operating a linear valve, such as a gate valve, includes a sealing plate that extends across the diameter of a housing. A diaphragm is located on, and fully supported by, the plate. When pressure media urges the diaphragm and sealing plate downward, the sealing plate urges a step downward to actuate a valve. A hub and an annular support plate can be assembled to form the plate, and the plate can be different sizes by selecting different sized annular support plates. | 05-22-2014 |
20140361204 | Hydraulically Controlled Storage Chamber Valve - A hydraulically controlled storage chamber valve includes a closing element that is biased via a first compression spring. The closing element seals a valve seat in a valve body. A tappet protrudes through a bushing in the valve body and is movable by an accumulator piston that is loaded by a second compression spring that is configured to push the closing element out of the valve seat when a specified force ratio is present between spring bias forces and a hydraulically acting force. The tappet is fastened in a region of the bushing such that the tappet is movable in a longitudinal direction and lies flush with a face of the accumulator piston while moving. | 12-11-2014 |
20150083946 | ACTUATOR FOR A VALVE AND A VALVE COMPRISING SUCH ACTUATOR - Actuator for a valve, comprising a first piston, a first piston rod and a first fluid chamber for enabling movement of the first piston and the first piston rod. The actuator has a second piston, a second piston rod, the second piston rod being coaxially arranged with the first piston rod and radially enclosing at least a part of the first piston rod. A second fluid chamber is arranged for the second piston, for enabling movement of the second piston and the second piston rod. A first fluid channel is arranged in communication with each of the first and the second fluid chambers, for effecting, when fluid is introduced into the first fluid channel, movement of the first piston and the second piston. Also, a valve comprising such actuator is disclosed. | 03-26-2015 |
20180023725 | NO-BOLT SECURITY LATCHING SYSTEM | 01-25-2018 |