| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 251028000 | Fluid actuated pilot valve | 32 |
| 20090001301 | Blow-off valve - Commonly blow-off valves are very expensive devices due to the high reliability requirements and the necessity of a high volume flow rate to obtain an immediate drop of pressure in the system. In order to reduce costs and obtain a simple and reliable system, it is proposed to use an actuation vessel with a piston within, which is connected rigidly to the free piston and to operate the piston by applying the system pressure on one site of the piston to keep the Blow-off-valve closed and to open the blow-off-valve by connecting the vessel with a lower pressure, preferably atmospheric pressure. | 01-01-2009 |
| 20090152482 | REGULATING VALVE FOR THE DISCHARGE OF LIQUID - The invention concerns a regulating valve for the discharge of liquid from a container comprising a movable main valve body for opening and closing an outlet opening for the liquid to be discharged, and a movable pilot valve body for controlling the main valve body, characterised in that the main valve body and the pilot valve body are mechanically coupled together at least in one position relative to each other. | 06-18-2009 |
| 20090267007 | FINE ADJUSTABLE FIRING VALVE - A finely adjustable firing valve for rapidly discharging compressed air or compressed gas, for the purpose of generating a pressure wave in silos or containers of granular materials, comprising a pneumatic main valve ( | 10-29-2009 |
| 20100155630 | PILOT-CONTROLLED VALVE HAVING A CERAMIC CONTROL PISTON - A pilot-controlled valve, having a valve system which switches a pressure medium flow between at least one working connection, a supply pressure connection and a ventilation connection. The invention provides that the valve system includes at least one valve member made of ceramic material that is operated rotationally and/or linearly by the pilot control, at least one connecting channel is developed in the valve member which is able to be brought into flow connection to the working connection, which, as a function of the position of the valve member, produces a flow connection of the working connection to a first flow channel that is in connection to the ventilation connection or to a second flow channel that is in connection to the supply pressure connection, at least one section of the first flow channel and the second flow channel being developed in at least one static valve body that is made of ceramic material, at least the first flow channel is sealed from the second flow channel by at least one seal that is situated in a region outside a direct inflow by the pressure medium. | 06-24-2010 |
| 20100155631 | Pilot Device with Remote Pressure Control for Gas Pressure Regulators - The invention is a pilot device ( | 06-24-2010 |
| 20100163762 | SYSTEM AND METHOD FOR MONITORING CONTROL STATUS OF AN EXHAUST APPARATUS PRESSURE CONTROL SYSTEM - An exhaust pressure control apparatus is disclosed. The exhaust pressure control apparatus including a main body in which an inlet port and an outlet port are formed, the main body also including a pilot chamber. The system also includes a spool comprising an upper slide and a lower slide, the upper slide forming a movable portion of the pilot chamber, and the spool is held by the upper slide and the lower slide so that it can slide in an axial direction over a sliding surface connecting the intake port and the discharge port. A control system regulates a pressure in the intake port by controlling a pressure regulating gas supplied to the pilot chamber, and a control status portion provides an indication of the stability of the control system based upon the pressure in the pilot chamber. | 07-01-2010 |
| 20100163763 | PILOT OPERATED VACUUM PACKABLE INFLATION SYSTEM - An inflation system that is also used as a safety device to inflate a life-saving device such as a life raft. The inflation system may be manually activated or may be automatically activated as a result of contact with water. The system may include a gas-operated pilot valve having a self-contained small gas supply. The pilot valve is in fluid communication with a gas operated inflation valve. The gas-operated inflation valve includes a gas-actuated activator, an inlet in communication with a gas supply, an outlet and a fluid connection between the gas-operated pilot valve and the gas-actuated activator. The gas-actuated activator is movable from a first position that blocks fluid communication between the inlet and the outlet so as to prevent fluid flow between the inlet and the outlet, to a second position in which there is fluid communication between the inlet and the outlet. On activation, gas from the pilot valve activates a gas-actuated activator releasing a small self-contained gas supply in the pilot valve in response to the activation event, which in turn activates a gas-actuated activator in the gas-operated inflation valve, resulting in opening of the gas operated inflation valve and releasing gas from the gas supply to inflate the life raft. | 07-01-2010 |
| 20110248195 | CONTROL VALVE ASSEMBLY FOR LOAD CARRYING VEHICLES - A control valve assembly is provided for a load carrying vehicle that includes a storage space and a dumping mechanism. The control valve assembly includes a housing and a sliding valve positioned within the housing and movable between a first position, and a second position. The sliding valve includes a first piston that defines a first piston first surface and a first piston second surface, and a second piston that defines a second piston first surface and a second piston second surface. The first piston second surface faces the second piston first surface. A pilot system includes a first pilot passage in fluid communication with the first piston second surface to selectively actuate the sliding valve toward the first position, and a second pilot passage in fluid communication with the second piston first surface to selectively actuate the sliding valve toward the second position. | 10-13-2011 |
| 20110266472 | Self piloted check valve - The present invention is a self piloted check valve which utilizes closure of a piloting flapper valve to permit development of closure forces for a ball valve. The normally open ball valve has a central flow passage and simultaneously rotates and translates as it traverses between its fully open and fully closed positions. An opening bias system utilizes a combination of a first strong, stiff spring and a second weaker, less stiff spring. Reversible decoupling means disconnects and reconnects the second spring at a short travel distance from the normally open position of the ball, while the first spring always provides opening bias forces to the ball. The pressure induced force required to fully close the ball valve following decoupling of the second spring is less than the force required to overcome the combination of the first and second springs. | 11-03-2011 |
| 20120153193 | TWO-STAGE, SLOW-START VALVE APPARATUS AND METHOD - A two-stage, slow-start valve includes a minor valve assembly inside a major valve closure member of a major valve closure assembly so that fluid can flow through the valve at a higher rate by opening the major valve assembly or at a lower rate by opening the minor valve assembly while the major valve closure assembly is closed in order to allow fluid to flow in an alternate flow path through the major valve closure member. The example minor valve closure assembly has a minor valve closure member that is actuated to open by a minor valve piston on which minor valve actuating fluid is applied to the minor piston via a diaphragm seal positioned between the minor piston and the minor valve actuating fluid. Both the major valve closure assembly and the minor valve closure assembly can be pneumatically actuated to open. | 06-21-2012 |
| 20120153194 | VALVE - The invention refers to a valve comprising a main nozzle arranged between inlet and outlet, and a pilot nozzle. The main nozzle has a main nozzle fit. It is sealed by a sealing body. The pilot nozzle has a pilot nozzle fit that can be sealed by a pilot nozzle body. A movable operating element arranged in the valve serves for opening and closing the main and pilot nozzle. When the valve is opened, first of all, the already accelerated operating element lifts the pilot nozzle body from the pilot nozzle fit. | 06-21-2012 |
| 20120168653 | SLOW-ACTING ON/OFF VALVE - Disclosed is a slow-acting ON/OFF valve which includes a valve-opening pressure chamber that makes an actuating member (which actuates a valve body that comes into contact with and moves away from a valve seat to close and open a flow passage) move in a valve-opening direction against a spring biasing force in a valve-closing direction, and supplies air to the valve-opening pressure chamber, in minute increments, via a flow rate regulation valve. In this slow-acting ON/OFF valve, the dead time from the receipt of a valve-opening signal to the commencement of a valve-opening operation is short. A manifold is provided independently of the valve-opening pressure chamber. Between the valve-opening pressure chamber and the manifold, the following three valves are provided: a pressure regulation valve which allows air to flow into the valve-opening pressure chamber from the manifold until pressure in the valve-opening pressure chamber reaches a predetermined reserve pressure and which is closed upon the pressure in the valve-opening pressure chamber reaching the reserve pressure; a flow rate regulation valve which supplies air to the valve-opening pressure chamber from the manifold, in minute increments, after the pressure in the valve-opening pressure chamber reaches the reserve pressure; and an exhaust valve which rapidly discharges air in the valve-opening pressure chamber to the manifold upon pressure in the manifold dropping below the pressure in the valve-opening pressure chamber and is thereafter closed. | 07-05-2012 |
| 20120199765 | VALVE ASSEMBLY - The invention relates to a valve assembly for regulating the pressure of a pressure medium ( | 08-09-2012 |
| 20120298892 | MULTI-STAGE SWITCHABLE PILOT-CONTROLLED VALVE ARRANGEMENT - A pilot-controlled valve arrangement having at least one valve mechanism mounted in a valve housing for multi-stage switching of a compressed air flow between a feed pressure connection and a working line connection wherein a throttled compressed air flow can be switched in at least one switching stage by a throttle, wherein the pneumatic pilot control has a first control piston mounted in a first control chamber implemented in the valve housing and having a coaxial recess for forming a second control chamber in which a second control piston is mounted, so that an additive control pressure application to the control chambers generates a telescope-like deployment of a ram extending from the second control piston for generating a multi-stage switching stroke for the valve mechanism, in order to implement the throttled compressed air flow in at least one switching stage of the valve mechanism present between the closed and the open valve setting. | 11-29-2012 |
| 20130126766 | HYDRAULIC VALVE SYSTEM FOR ACTUATING AT LEAST ONE SHIFTING ELEMENT OF A TRANSMISSION - A valve device ( | 05-23-2013 |
| 20130168581 | PRESSURE CONTROL APPARATUS - A first resilient member generates a resilient force to urge a valve portion in a valve-closing direction. A second resilient member generates a resilient force against the resilient force of the first resilient member. The resilient force of the first resilient member and the resilient force of the second resilient member are set to be balanced with each other when the valve portion is placed in a lift position that is between a full-closing position of the valve portion, in which the valve portion is seated against a valve seat to fully close a fluid passage, and a full-opening position of the valve portion, in which the valve portion is fully lifted away from the valve seat to fully open the fluid passage. | 07-04-2013 |
| 20130277581 | Rigid Piston Retrofit for a Diaphragm Flush Valve - A rigid piston assembly for use in a conventional flush valve includes a rigid piston configured to fixedly engage within the valve body. The present invention is also directed to a flush valve for a plumbing fixture as well as a method of retrofitting a rigid piston into a diaphragm flush valve body. | 10-24-2013 |
| 20140061516 | Stabilized Valve - An SPM valve for use in a subsea environment includes a spool selectively movable between first and second positions to thereby arrange the valve in respective armed and disarmed configurations. The particular arrangement of a supply port and discharge port with respect to the spool permits a pressurized working fluid supplied to the supply port to bias the spool to both the first and second positions once an external force is applied to the spool to initially set the spool in either the first or second position. | 03-06-2014 |
| 20140110612 | HYDRAULIC HIGH PRESSURE VALVE CONTROLLER USING THE IN-SITU PRESSURE DIFFERENCE - A hydraulic vale controller that uses an existing pressure differential as some or all of the power source for valve operation. In a high pressure environment, such as downhole in an oil or gas well, the pressure differential between the inside of a pipe and the outside of the pipe may be adequately large to drive a linear slide valve. The valve is operated hydraulically by a piston in a bore. When a higher pressure is applied to one end of the bore and a lower pressure to the other end, the piston moves in response to the pressure differential and drive a valve attached to it. If the pressure differential is too small to drive the piston at a sufficiently high speed, a pump is provided to generate a larger pressure differential to be applied. The apparatus is conveniently constructed using multiport valves, which can be rotary valves. | 04-24-2014 |
| 20140264101 | Device for Controlling the Fluid Supply of a System - Device for controlling the supply of a system from a pressurised fluid source comprising an inlet ( | 09-18-2014 |
| 20140299799 | SPOOL VALVE - A spool valve is equipped with a valve body, a spool arranged in a valve chamber such that the spool can be displaced between a first position, which allows communication between an inlet port and an outlet port, and a second position, which blocks communication between the inlet port and the outlet port, a pilot valve mechanism disposed in the valve body and which causes displacement of the spool along an axial direction under the pressure of a pilot fluid that acts on one end surface of the spool, and a spring that biases the spool toward one side in the axial direction. | 10-09-2014 |
| 20150300267 | THROTTLE VALVE FOR PREVENTING SUDDEN UNINTENDED ACCELERATION - A throttle valve for preventing a sudden unintended acceleration, the throttle valve regulating an amount of air supplied to an engine mounted on a vehicle and including a valve main body, a flow path formed in the valve main body and having an inlet through which the air flows in and an outlet connected to the engine, and a flow rate regulating unit regulating an amount of the air in the flow path by opening or closing the flow path, in which, when a rapid pressure drop occurs at the outlet side connected to the engine, the flow rate regulating unit is pressed by a force generated due to a difference in pressure between the inlet and the outlet so as to close the flow path without use of an additional drive source. When a rapid pressure drop occurs at the outlet side connected to the engine, a flow rate regulating unit automatically closes the flow path without use of an additional drive source by being pressed by a force generated due to a difference in pressure between the inlet and the outlet, thereby substantially preventing a vehicle sudden unintended acceleration accident. | 10-22-2015 |
| 20160010698 | A SHUT-OFF VALVE IN A HYDRAULIC DISC COUPLING FOR AN AWD VEHICLE | 01-14-2016 |
| 20160040564 | ACTUATOR FOR AXIAL DISPLACEMENT OF AN OBJECT - An actuator for axial displacement of an object, includes an actuator piston and an actuator piston rod, wherein the piston is displaceable in the axial direction, and a hydraulic circuit including a liquid filled chamber, a first end of the actuator piston rod being displaceable in the axial direction within the liquid filled chamber, wherein an axially extending recess mouth in the liquid filled chamber is arranged to receive the first end. The actuator piston rod in the area of the first end presents a cylindrical envelope surface, and the recess presents a cylindrical inner surface having a matching shape, wherein the actuator includes a passage extending between the recess and liquid filled chamber when the cylindrical envelope surface and the cylindrical inner surface are located in overlapping configuration, wherein the passage presents at a braking overlap section a cross section area that decreases as a function of increasing overlap. | 02-11-2016 |
| 20160052184 | END OF STROKE ACTUATOR BLEED - An apparatus for driving a valve pin in an injection molding system, comprising:
| 02-25-2016 |
| 20160069469 | FLUID REGULATOR HAVING A RETRACTABLE SENSE TUBE - A fluid regulating device includes a valve body having an inlet, an outlet, and a valve port, a control element adapted to be displaced relative to the valve port to control the flow of a fluid between the inlet and the outlet, a control assembly operatively coupled to the control element and including a diaphragm disposed adjacent a diaphragm chamber, and a sense tube. The sense tube has a first end, a second end, and a sense hole formed adjacent the second end. The first end is positioned to communicate with the diaphragm chamber, and the second end is disposed adjacent the outlet, with the second end being movable, relative to the first end, between a first position within the valve body and a second position extending outside of the valve body, the movement being in response to fluid flowing between the inlet and the outlet. | 03-10-2016 |
| 20160076667 | Rigid Piston Retrofit for a Diaphragm Flush Valve - A rigid piston assembly for use in a conventional flush valve includes a rigid piston configured to fixedly engage within the valve body. The present invention is also directed to a flush valve for a plumbing fixture as well as a method of retrofitting a rigid piston into a diaphragm flush valve body. | 03-17-2016 |
| 20160131263 | Die Casting Mold Evacuation Valve Assembly - A die casting mold evacuation valve assembly ( | 05-12-2016 |
| 20160158994 | Valve Arrangement - A valve arrangement is provided having a main valve having a switching piston guided in a valve housing, which switching piston can be moved relative to the valve housing between a first position, in which the main valve is closed, and a second position, in which the main valve is open. A control surface of the switching piston may transfer a control force onto the switching piston. At least one bore connecting a control air switching chamber to the control chamber in terms of flow may introduce control air into the control chamber for closing the main valve, and may vent the control chamber when opening the main valve. A control air bore may introduce control air to the control air switching chamber, in which a venting bore terminating in the control air switching chamber may be provided to vent the control chamber when the main valve is opened. | 06-09-2016 |
| 251029000 | With additional pilot valve control | 3 |
| 20100155632 | Valve Controller - A controller for controlling a valve is disclosed including a manifold assembly, a valve position indicator and a trigger assembly. An operating media distribution system is disposed in the manifold assembly and an electronic control unit is disposed in the controller. The electronic control unit operates at least one electromagnetic valve to control operating media flow via the operating media distribution system to activate an actuator which opens or closes the valve. The trigger assembly includes a cylinder adapted to receive an actuator shaft and provide a self setting mechanism corresponding to the stroke length of the actuator shaft. | 06-24-2010 |
| 20130048889 | CONTROL VALVE - A control valve includes a signal pressure passage that transmits a pilot pressure in first and second pilot chambers as a signal pressure of another device, and first and second connecting grooves that connect the first and second pilot chambers to the signal pressure passage when a spool is in a neutral position. When the pilot pressure is led into the first pilot chamber such that the spool moves, the first connecting groove connects the first pilot chamber to the signal pressure passage while the second connecting groove separates from the signal pressure passage. When the pilot pressure is led into the second pilot chamber such that the spool moves, the second connecting groove connects the second pilot chamber to the signal pressure passage while the first connecting groove separates from the signal pressure passage. | 02-28-2013 |
| 20140312250 | FLOW REGULATING VALVE SUBASSEMBLY - A flow regulating valve subassembly includes a main valve configured as a seat valve and a valve piston. The valve piston is acted upon via a first end face by the pressure of a first working connection and via an annular surface of the valve piston by the pressure of a second working connection in the opening direction. The valve piston is also acted upon in the closing direction via a second end face by the pressure of the higher-pressure working connection. An adjustable throttle is formed between a housing of the main valve and the valve piston. The throttle has a cross section that changes continuously during displacement of the valve piston and connects the higher-pressure working connection to the second end face. A pilot control valve arrangement is configured to control a control line which connects the second end face to the lower-pressure working connection. | 10-23-2014 |
