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Class 137/488 - Fluid pressure type


Subclass of Class 137 - Fluid handling
Definition: Apparatus in which the means sensing a change in fluid condition
No. of applications: 73
Last issue date: 03/22/2012


1    
Application No.Application TitleIssue Date
20120067432 HYDRAULIC SYSTEM AND A WORKING MACHINE COMPRISING SUCH A HYDRAULIC SYSTEM
A hydraulic system for a working machine includes at least one work function and a control valve unit for controlling hydraulic fluid to and from the work function, and a recovery unit connected to a return port of the control valve unit for recovering energy from the w...
03/22/2012
20120017997LATCHING VALVE
A latching valve system includes a housing, a supply port defined in the housing, a delivery port defined in the housing, an exhaust port defined in the housing, an apply port defined in the housing, and a release port defined in the housing. The apply port is sealingly...
01/26/2012
20120006418SYSTEM AND METHOD FOR HYDRAULICALLY MANAGING FLUID PRESSURE DOWNSTREAM FROM A MAIN VALVE
A system and method for controlling fluid pressure downstream a main valve includes associating a variable orifice with the main valve such that the variable orifice opens as the main valve is opened and closes as the main valve is closed. A fluid stream taken from a fl...
01/12/2012
20120006417SYSTEM AND METHOD FOR HYDRAULICALLY MANAGING FLUID PRESSURE DOWNSTREAM FROM A MAIN VALVE BETWEEN SET POINTS
A system for hydraulically managing fluid pressure between selected set points includes a pilot control system operably coupled to a main valve. The pilot control system includes at least one fluid conduit, a variable orifice assembly, and a control pilot valve apparatu...
01/12/2012
20110315234FLUID CONTROL SYSTEM FOR STEERABLE AGRICULTURAL IMPLEMENT
An agricultural implement system is provided that includes a valve in fluid communication with first and second actuating cylinders and with first and second fluid conduits. The valve is configured to control fluid flow from the first and second fluid conduits to the fi...
12/29/2011
20110303301PRESSURE MANAGEMENT HYDRAULIC CONTROL VALVE
Disclosed are a method and device for modulating the downstream pressure output of a pressure reducing hydraulic control valve in response to the flow demand fluctuation the method comprising. Included is an adjustable pressure pilot valve mechanism having a drive eleme...
12/15/2011
20110297252PRESSURE REDUCING VALVE CONTROL
An improved pilot valve assembly (14) for hydraulically controlling a pressure reducing valve (12) to maintain and further vary the outlet pressure (P2) of the pressure reducing valve (12) in response to increased flow (f) through the valve (...
12/08/2011
20110232320FLOW REVERSING VALVE AND HEAT PUMP DEVICE USING SAME
A flow reversing valve includes a reversing valve main body adapted to assume a first circulatory state where a first main valve part is in a fully-open state and a second main valve part is in a fully-closed state and a second circulatory state where the first main val...
09/29/2011
20110192473PNEUMATIC PRESSURE REGULATING VALVE
A pneumatic pressure regulating valve, the opening of which can be automatically changed in a pressure-related manner, including a control diaphragm that is subjected to a reference pressure, to the gas pressure as well as to a governor spring, wherein a change in the d...
08/11/2011
20110192472PNEUMATIC PRESSURE REGULATING VALVE
A pneumatic pressure regulating valve, the opening of which can be automatically changed in a pressure-related manner, including a control diaphragm that is subjected to a reference pressure, to the gas pressure as well as to a governor spring, wherein a change in the d...
08/11/2011
20110185772VARIABLE PRESSURE WATER DELIVERY SYSTEM
A variable pressure water delivery device having an inlet valve fluidly connected to a reservoir, and connectable to a water supply, the inlet valve is at least operable between an open and closed position. The reservoir has a volume that increases elastically with incr...
08/04/2011
20110162729GAS REGULATING UNIT
The invention relates to a gas regulating unit with a valve basic body (11) which forms at least one gas inlet chamber and one gas outlet chamber, with a safety valve and with a main gas valve, wherein the safety valve and the main gas valve either open or close ...
07/07/2011
20110147141Valve Device, Electrically Operable Parking Brake System and Method for Controlling an Electrically Operable Parking Brake System
A valve device is provided for a pneumatic brake system of a commercial vehicle and comprises a pilot piston, radial seals and at least one valve seat, which can be displaced in the direction of motion of the pilot piston....
06/23/2011
20110146813TAMPER-RESISTANT VALVE AND CONNECTION ARRANGEMENT
A gas cylinder valve 2 is able to be opened by application of a pilot gas pressure. In certain embodiments the gas cylinder valve 2 is usable with a yoke 8 for engaging with a valve assembly of a gas cylinder 1, the yoke comprising a pilot ga...
06/23/2011
20110108138PRESSURE CONTROL VALVE DRIVING CIRCUIT FOR PRESSURE TYPE FLOW RATE CONTROL DEVICE WITH FLOW RATE SELF-DIAGNOSIS FUNCTION
A pressure control valve piezoelectric element driving circuit is provided for a pressure type flow rate control device provided with a flow rate self-diagnosis function for comparing initial pressure drop characteristics data measured and with pressure drop characteris...
05/12/2011
20110088801Automatic Fluid Spill Prevention and Shut Off Safety Valve
A centralized automatic fluid or gas spill prevention and shut-off valve system that prevents line ruptures comprising means to reduce fluid pressures, such as gas, to appropriate levels, a continuous monitoring of downstream conditions, an immediate stop system of majo...
04/21/2011
20110083756COMPRESSED GAS SAFETY DISCHARGE SYSTEM
The present invention provides a compressed gas safety discharge system preventing a pressure vessel from breaking and exploding by appropriately and timely operating a pressure relief device, conditions of a fire, such as when a fire occurs around the pressure vessel f...
04/14/2011
20110079298METHOD AND DEVICE FOR THE FUNCTIONAL TESTING OF A PRESSURE SWITCH OF A TANK VENT SYSTEM FOR AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE
A method for the functional testing of a pressure switch of a tank vent device for an internal combustion engine of a motor vehicle, enables the testing of the pressure switch even while the crankshaft is rotating. The pressure switch is located in a low pressure positi...
04/07/2011
20110073198DOME-LOADED PRESSURE REGULATORS
Dome-loaded pressure regulators are disclosed. An example pressure regulator includes a body having a pressure inlet and first and second pressure outlets and a first dome-loaded pressure regulating valve fluidly coupled to the pressure inlet, the first pressure outlet,...
03/31/2011
20110076204PINCH VALVE AND METHOD FOR MANUFACTURING SAME
A pinch valve, a chip including a pinch valve of this type, a peristaltic pump including a pinch valve of this type and a method for manufacturing same. The pinch valve includes a first substrate, a second substrate, and a third substrate, the third substrate being farm...
03/31/2011
20110073197COMBINED VALVE
A combined valve comprising a pilot mechanism (3) and a manual mechanism (4), the manual mechanism (4) including: a flange (46e) formed with a communication passage (46c); a housing (18) including a holding hole (<...
03/31/2011
20110030816CONTROL SYSTEM FOR CONTROLLING A DIRECTIONAL CONTROL VALVE
The invention relates to a control arrangement with a pilot aggregate (6) for controlling a control valve (2) comprising a first and a second control chamber (36, 38). The first control chamber (36) is provided for adjusting the control valve...
02/10/2011
20110023981OIL PRESSURE CONTROL APPARATUS FOR AUTOMATIC TRANSMISSION
An oil pressure control apparatus for an automatic transmission configured with an oil pressure servo that engages and disengages a friction engagement element. The friction element is engaged by first and second hydraulic oil chambers that individually provide low torq...
02/03/2011
20100269923Electronic faucets for long-term operation
An electronic faucet (10) mounted on a countertop (12) includes a housing, at least one fluid inlet line (24a, 24b) extending into the housing, a fluid outlet (46) from the housing, a solenoid (142, 143) for operat...
10/28/2010
20100269924FLOW RATE RATIO CONTROLLING APPARATUS
An object of this invention is to provide a flow rate ratio controlling apparatus that does not need devices of a plurality of types and that enables reduction of the number of types of components and the manufacturing cost. The flow rate ratio controlling apparatus com...
10/28/2010
20100269632FLUID PRESSURE CONTROL DEVICE WITH INTEGRATED PRESSURE SENSOR
Provided is a fluid pressure control device that includes an actuator and a body configured to house the actuator. The body has an opening arranged to receive pressurized fluid. The fluid pressure control device additionally includes a pressure sensor incorporated into ...
10/28/2010
20100243079PRESSURE LIMITING VALVE AND ARRANGEMENT OF A PRESSURE LIMITING VALVE FOR THE PILOT CONTROL OF A PRESSURE CONTROL VALVE
An arrangement of a pressure limiting valve (1) for the pilot control of a pressure control valve of a hydraulically actuatable shifting element of a motor vehicle transmission in which the pressure limiting valve (1) is disposed such that the armature axi...
09/30/2010
20100193051DIFFERENTIAL-PRESSURE FLOWMETER AND FLOW-RATE CONTROLLER
A differential-pressure flowmeter that can reduce (eliminate) a difference between the ambient temperature of one pressure sensor and the ambient temperature of another pressure sensor so as to allow for accurate and stable pressure measurement is provided, and a flow-r...
08/05/2010
20100147395METHOD FOR DETERMINING THE PATH AND PRESSURE WEAR CONDITION OF A VALVE MECHANISM AND VALVE ARRANGEMENT USING SUCH A VALVE
A method for sensor operating-state determination of a valve arrangement to control a process medium flow through a pipeline having a valve element, arranged such that it can move axially within a valve housing via a pneumatic actuating drive by application of control p...
06/17/2010
20100126601Pilot Valve For A Pressure Reducing Valve
A pilot valve (2) for controlling operation of a hydraulically-actuated pressure reducing valve, the pilot valve including a housing (4), and a first valve member (15) mounted in the housing for longitudinal movement along an axis relative to the ho...
05/27/2010
20100101665DOME-LOADED PRESSURE REGULATORS
Dome-loaded pressure regulators are disclosed. An example pressure regulator includes a dome-loaded pressure regulating valve fluidly coupled to a pressure inlet, a pressure outlet, and a control pressure. The pressure regulating valve includes a piston, having a transv...
04/29/2010
20100092821VALVE FOR FUEL CELL, AND FUEL CELL VEHICLE
A valve-closing pressure chamber and a valve-opening pressure chamber are arranged on both sides of a main diaphragm inside an outlet shutoff valve. An upper supply/discharge tube and a lower supply/discharge tube are connected to a housing forming the outlet shutoff va...
04/15/2010
20100084031Pilot Operated Spool Valve
A spool valve assembly includes a spool that is moveable by differential pressure across the spool....
04/08/2010
20100071775SUBSEA SYSTEM AND METHOD FOR PROTECTING EQUIPMENT OF A SUBSEA SYSTEM
A subsea system comprises a wellbore within a reservoir, equipment downstream of the wellbore, and a barrier connected to the equipment. The equipment is rated for a maximum pressure that is less than a maximum reservoir pressure and equal to or greater than the maximum...
03/25/2010
20100059694PRESSURE-BASED GAS DELIVERY SYSTEM AND METHOD FOR REDUCING RISKS ASSOCIATED WITH STORAGE AND DELIVERY OF HIGH PRESSURE GASES
Apparatus and method for dispensing a gas using a gas source coupled in selective flow relationship with a gas manifold. The gas manifold includes flow circuitry for discharging gas to a gas-using zone, and the gas source includes a pressure-regulated gas source vessel ...
03/11/2010
20100043892VALVE FOR FUEL CELL BASED POWER GENERATOR
A device has an annulus having a first end and a second end. A valve plate is coupled to the first end of the annulus by a fastener, wherein the valve plate is adapted to contact a valve seat on a hydrogen producing fuel cover. A diaphragm is coupled to the second end o...
02/25/2010
20100037762VALVE DEVICE AND METHOD FOR THE ACTIVATION OF AN ACTUATING DRIVE ACTED UPON WITH PRESSURE MEDIUM BY A POSITION CONTROLLER
A valve device and method for the activation of an actuating drive, which can be acted upon with a pressure medium by a position controller. The position controller can be acted upon by a working connection of the actuating drive with a pressure medium which can be deli...
02/18/2010
20100001223VALVE WITH A SPRINGY DIAPHRAGM
A diaphragm membrane (212) is disclosed that has a shape that spring loads a diaphragm during assembly to provide a default position for the diaphragm. The diaphragm membrane (212) is made from a resilient material. The diaphragm is spring loaded during as...
01/07/2010
20090314359PILOT-CONTROLLED PRESSURE LIMITING VALVE
A pressure limiting valve has a control element (10) which can be acted on in an opening direction, against a first control face, by a pressure which is to be limited, and which can be acted on in a closing direction by a spring (16) and, against a second ...
12/24/2009
20090308337Adaptive Pressure Control Valve with Variable Switching Point
A valve for the control of a gas stream is provided with a valve housing enclosing a valve chamber. At least one pressure-sided inlet and at least one suction-sided outlet is provided with a valve opening between them to link them. An elastically movable control membran...
12/17/2009
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