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Fluid Handling > Processes > With Control Of Flow By A Condition Or Characteristic Of A Fluid > By Fluid Pressure

By Fluid Pressure

By Fluid Pressure patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

07/24/14 - 20140202550 - Pressure relief valve
A pressure relief valve and a mating fuel tank bung are installed directly on a fuel tank. In one embodiment a bung is welded directly to a fuel tank, and thereafter a pressure relief valve is attached directly to the bung by mating threads. This system and installation method provides...

07/10/14 - 20140190572 - Connecting piece of a transport line
A tempered connecting piece is provided for transporting a viscous fluid, and includes an excess pressure release component, which separates the inside of the connecting piece from a discharge line and is fixed to an outer edge on the discharge line. The excess pressure release component is designed to release...

07/03/14 - 20140182693 - Hydraulic gain of transmission control elements
A system controlling gain in a control element includes a source of line pressure, a source of signal pressure, a control valve that controls communication between line pressure and the control element, including a first differential area communicating with control element pressure, and a second differential area, and a gain...

07/03/14 - 20140182694 - Backpressure regulator for easy pump start-up
A system and method for automatically performing start-up and overpressure relief functions in association with a primary fluid carrier such as, for example, a liquid handling pipeline or tank. The system includes a main valve for primarily exhausting air from the system as it fills with a liquid. A start-up...

06/26/14 - 20140174550 - Fault isolation & decontamination procedures for electrohydraulic valves
A method for isolating a fault or blocked work port in an electro-hydraulic system is disclosed. In one step, a system pump is set to a first predetermined pressure and a valve assembly is commanded to a center position. In another step, the center position of the valve is recorded....

06/26/14 - 20140174551 - Variable gas pressure regulator
A variable gas pressure regulator comprises a throttling valve regulating the fluid flow between a high-pressure fluid inlet and a regulated space fluidly connected to a fluid outlet, a high-pressure solenoid commanded to control fluid flow between the fluid inlet and a control space and a low-pressure solenoid commanded to...

06/19/14 - 20140166114 - Control system for hydraulic system and method for recovering energy and leveling hydraulic system loads
A control system for a hydraulic system including an accumulator and a hydraulic transformer coordinates flow sharing within the hydraulic system. The hydraulic transformer includes first and second variable displacement pump/motor units mounted on a rotatable shaft. The rotatable shaft has an end adapted for connection to a first external...

06/19/14 - 20140166115 - Water hammer recognizing and energy saving water hammer prevention system and method for controlling the same
The present invention relates to a water hammer recognizing and energy saving water hammer prevention system and a method for controlling the same that is configured wherein in case of the selective on/off operations of a plurality of pumps in a pipe system in accordance with the change of the...

06/12/14 - 20140158212 - Dual feedback vacuum fluidics for a flow-type particle analyzer
The present invention relates to a vacuum-driven fluidic system for a flow-type particle analyzer. The system includes a vacuum pump which creates a pressure drop downstream of the flow cell, which pulls sheath fluid and sample fluid through the flow cell. A variable-resistance fluidic resistor is configured to control the...

06/05/14 - 20140150885 - Positive isolation through isolation of air supply to pneumatic valves
Systems and methods are described for actuating a plurality of pneumatic valves to positively isolate one or more pieces of equipment. A manual valve can be disposed on a supply conduit that fluidly couples each of the pneumatic valves to a fluid supply source. To place the pneumatic valves in...

05/22/14 - 20140137947 - Apparatus and method for reducing actuator thrust requirements in a control valve
A trim assembly is provided with a cage with an internal surface and a cage port. A plug having an external surface is disposed in the cage and is operable between a closed position, a pressure balancing position and an open position. The trim assembly also includes a low friction...

05/22/14 - 20140137948 - Method for operating a fuel system, and fuel system
In a method for operating a fuel system of an internal combustion engine, the fuel system has a fuel tank and a ventilation device, which has at least one vent valve, for ventilating the fuel tank. The magnitude of deformation caused by an internal pressure of the fuel tank of...

05/15/14 - 20140130883 - Flow reduction for bleed air systems
A valve control system includes a valve connected to regulate flow of a medium provided to an output and a sensor connected to monitor a feedback value associated with the medium. A controller modulates the valve based on a comparison of a reference value to the feedback value provided by...

05/15/14 - 20140130884 - Slam shut safety device having disc arrestor assembly
A slam-shut safety device having a disc arrestor includes a valve body, a valve seat between an inlet and an outlet, and a reset pin shiftable between untripped and tripped positions. A valve disc support includes has a threaded stem and is operatively coupled to the reset pin. A valve...

05/01/14 - 20140116523 - Fuel system having dual fuel pressure regulator
A pressure regulator is disclosed having a body, a valve seat dividing a cavity of the body into first and second portions, and an end stop movable against a bias to selectively engage the valve seat and isolate the first and second portions. The pressure regulator may also have a...

05/01/14 - 20140116524 - Fluid supply system and method of controlling fluid supply system
A fluid supply system includes a tank, a shutoff valve, a fluid fill channel, a fluid supply channel, a fill detector, a pressure detector, and a controller. The shutoff valve includes a shared channel to enable fluid to flow from a fill hole to the tank and to flow from...

04/24/14 - 20140109978 - Aircraft bleed system and method of controlling an aircraft bleed system
An aircraft bleed system includes a low pressure supply port for delivering a first fluid at a first pressure. Also included is a high pressure supply port for delivering a second fluid at a second pressure, the second pressure greater than the first pressure. Further included is a feedback circuit...

04/03/14 - 20140090717 - Upstream sense for balance port
A fluid regulating device includes a regulator valve having a valve body defining an inlet and an outlet and a valve port disposed between the inlet and the outlet. A housing assembly is disposed adjacent the valve port, and the housing assembly includes a first aperture adapted to receive a...

03/27/14 - 20140083514 - Method and apparatus for self verification of pressured based mass flow controllers
A mass flow control system can be self verified for its accuracy when controlling a flow to a process. The system comprises: a control valve for controlling the flow of fluid through the system as a function of a control signal; a controller for generating the control signal as a...

03/27/14 - 20140083515 - Slam shut safety device having disc anti-rotation
A slam-shut safety device includes a valve body and defining a flow path, a valve disc mounted on a valve disc support is movable between an open first position spaced away from the valve seat and a closed second position seated against the valve seat. A reset pin is operatively...

03/20/14 - 20140076408 - Method and apparatus for determining and controlling a static fluid pressure through a vibrating meter
A method for operating a fluid flow system (300) is provided. The fluid flow system (300) includes a fluid flowing through a pipeline (301), a first pressure sensor (303) located within the pipeline (301), and a vibrating meter (5). The vibrating meter (5) includes a sensor assembly (10) in fluid...

03/20/14 - 20140076409 - Pressure control device for a tire inflating system with a rotary feedthrough, and tire pressure changing method
A pressure control device for a vehicle tire inflating system is configured to receive compressed air via a ventilating inlet, activate at least one seal for sealing an air chamber between a stator and a rotor of a rotary feedthrough via a seal actuating outlet, and ventilate a tire at...

03/06/14 - 20140060661 - Solenoid valve control device and solenoid valve control method
An internal pressure sensor detects an internal pressure of the fuel tank, which stores fuel. A solenoid valve is configured to close to seal the fuel tank and is configured to open to open the fuel tank. An internal pressure acquisition unit is configured to acquire an internal pressure of...

02/27/14 - 20140053912 - Methods and apparatus for enhanced gas flow rate control
The present invention provides methods and apparatus for controlling gas flow to a semiconductor-processing chamber. The invention includes deactivating ratio setpoint feedback control in a flow ratio controller; initiating gas flow through the flow ratio controller; moving valves of the flow ratio controller to a preset position based on a...

02/27/14 - 20140053913 - Oil bypass valve
A bypass valve which may direct excess oil back into the cam chest where the return side of the oil pump may send the oil back into the oil tank. The bypass valve may fit within the bypass port of the cam plate and connect with a high pressure feed....

02/20/14 - 20140048142 - Pressure and temperature balancing valve system for a roman tub
A method for avoiding scalding a bather with hot water from a hand held shower head, including operationally connecting hot and cold water supplies to a bathtub fill spigot, operationally connecting a compact pressure balanced valve having an output and a plurality of inputs to a bathtub deck, operationally connecting...

01/30/14 - 20140026972 - Valve system
A valve system for use in an inflatable bladder having two opposing layers and a bladder interior disposed between the two layers, the valve system includes (i) an aperture disposed at a position on one layer for filling and deflating the bladder interior,...

01/16/14 - 20140014190 - Differential pressure valve with parallel biasing springs and method for reducing spring surge
A differential pressure valve is disclosed, comprising: a valve body, the valve body having at least one flow inlet and one flow outlet; at least one shutter, the shutter being movable between an open position and a closed position under a differential pressure across the valve; a flow passage from...

01/16/14 - 20140014191 - Method and device for preventing a mud relief valve from incorrect opening
A device for preventing a primary relief valve in a mud system from opening at a pressure lower than a nominal opening pressure includes a flow restrictor between a mud pump of the mud system and the primary relief valve. In addition, the device includes a cavity between the flow...

01/02/14 - 20140000723 - Pressure fuse or breaker
Described are pressure fuses or pressure breakers which regulate the pressure downstream from the device. When the fluid pressure exceeds the trip pressure, the pressure fuse or breaker will trip and protect other components downstream of the fuse or breaker. Also described are methods of regulating pressure downstream from a...

12/26/13 - 20130340837 - Device and method for supplying gas while dividing to chamber from gas supplying facility equipped with flow controller
The invention supplies a quantity Q of gas while dividing at flow rate ratio Q1/Q2 from a gas supply facility equipped with a flow controller. A total quantity Q=Q1+Q2 of gas is supplied into a chamber at flow rate Q1 and Q2 through shower plates fixed to ends of branch...

11/28/13 - 20130312835 - Method and apparatus for rapid pump-down of a high-vacuum loadlock
A gas expansion module for use with semiconductor wafer loadlocks and other regulated-pressure components of semiconductor processing tools is provided. The gas expansion module may be barometrically isolated from the loadlock or other component and pumped down to a vacuum condition while the loadlock is performing operations at a higher...

11/28/13 - 20130312836 - Adjustable doser valve
A doser valve with a seat comprising at least one axially located slot from an outer surface of the seat and at least one radial/tangential extending passage in fluid communication with the at least one axially located slot and an exit passage out of the seat....

11/21/13 - 20130306159 - Unit for simulating the pressure and temperature conditions of the air drawn in by a reciprocating internal combustion engine
The invention relates to a unit for simulating the pressure and temperature conditions of an air flow drawn in by a reciprocating internal combustion engine (1) at a height above sea level, corresponding to the operating height of said reciprocating internal combustion engine (1). According to the invention, the unit...

10/24/13 - 20130276901 - Apparatus, systems and methods for a flow control device
A flow control device for control of fluid flow through a tubular member comprises a control chamber having a piston disposed therein, where the piston is moveable from an open piston position to a closed piston position by the application of a first fluid pressure, and a valve chamber having...

10/24/13 - 20130276902 - Central tire inflation wheel assembly and valve
The present invention is a central tire inflation system and a valve for use in the system including a casing securable to the rim of a vehicle in communication with the tire that houses a main body connectable to a pressurized fluid supply of the central tire inflation system, and...

10/24/13 - 20130276903 - Active valve for ventilators
A valve (100) for controlling pressure in a ventilation system is disclosed. The valve comprises an electromagnet (105, 106), a shaft (107) connected to the electromagnet, and a diaphragm (110) connected to the shaft, wherein the electromagnet applies force to the diaphragm based on an input. The ventilation system comprises...

10/10/13 - 20130263929 - Pressure control device
A pressure control device for isolating a section of a conduit is described. The device comprises a support member, a flexible cup member mounted to the support member, a first swellable element, the first swellable element adapted, upon activation by an activation fluid, to urge a first portion of the...

10/10/13 - 20130263930 - Pilot valve controlled positive and negative pressure relief valves
Concepts and technologies disclosed herein for relief valves (“relief valves”). A relief valve can include a flow path, a primary valve poppet that is urged or biased into a closed position by a tensioned spring, and a pilot valve in communication with a valve compartment of the relief valve. When...

10/10/13 - 20130263931 - Pressure limiting valve and alternative method for testing a backflow preventer using the same
The pressure limiting valve has a low pressure gauge configured to measure the operability of a backflow prevention device having a line pressure relatively higher than the maximum PSI rating of the low pressure gauge. The valve body has an inlet statically coupled to a pressurized fluid source and an...

10/03/13 - 20130255790 - Emergency pneumatic tire inflator
This is a pneumatic device used to transfer air from an inflated tire to a deflated tire using a flexible tube and methods of use. The transfer tube is flexible and allows sealed air to transfer through in one direction by using standard screw-on valve connectors on each end and...

10/03/13 - 20130255791 - Fluid regulator having improved flow stability
A fluid regulator includes a regulator body having a fluid inlet and a fluid outlet connected by a fluid flow path, with a portion of the regulator body forming a first chamber and a second chamber, an orifice disposed in the fluid flow path, a seat, and a control element...

09/12/13 - 20130233396 - Latching clutch valve
A hydraulic valve for a vehicle transmission includes a housing, a valve piston, an actuating piston, and a bi-stable spring. The housing is connectable with an inlet passage and an outlet passage for the transmission. The valve piston is sealed to the housing and selectively blocks a fluid flow between...

09/12/13 - 20130233397 - Regurgitant control directional flow valve for simulating cardiovascular hemodynamics
A directional flow valve in a cardiovascular prosthesis test system includes a regurgitant flow passage. Forward flow from a pump through the valve is unrestricted and allowed to pass freely through the directional flow valve. Regurgitant flow is allowed across the directional flow valve to reduce a negative pressure gradient...

08/22/13 - 20130213486 - Column pressure regulation system and method
A system for regulating a pressure of a piston on a bed in a flow through column system, where the flow through column system includes a piston pressure chamber in communication with the piston and an inlet line and an outlet line in communication with the bed. A pump has...

08/15/13 - 20130206242 - Fluid activated flow control apparatus
Embodiments of a fluid flow regulating device and methods of using the same are described. Certain embodiments manages fluid flow between one or more input ports and output ports at least partly in response to fluid pressure changes and/or by a mechanism driven by fluid flow, optionally without using electrical...

08/08/13 - 20130199618 - Active vortex control system (avocs) and method for isolation of sensitive components from external environments
An active vortex control system (AVOCS) includes a set of primary injectors that inject gas into a cavity to generate a vortex in front of and possibly around components inside the cavity. The vortex interferes with an external flow field in an opening to the cavity to protect the components...

08/08/13 - 20130199619 - Method and apparatus for deactivating a hydraulic device that is leaking hydraulic oil
A method of deactiving an underwater hydraulic device provides a hydraulic device that is capable of being operated under water, the device having a hydraulic cylinder with a pushrod and a piston. The device is lowered below a water surface with a hose reel that is located at the water...

07/25/13 - 20130186472 - Electronic load drop protection for hydraulic fluid system
A method of controlling a valve includes detecting a supply pressure at a fluid source and detecting a first port pressure at a first side of a piston. A controller actuates the valve from a closed position to a first open position when the supply pressure is in excess of...

06/13/13 - 20130146147 - Glass bulb thermally-activated pressure relief device, safety inspection method, and equipment
A method and apparatus to periodically inspect and control piston movability are provided that can include using a contactless sensor system through a gas outlet port of a pressure relief device. By moving a stop, relative movement of the piston can be compared to the fixed body reflecting a movability...

06/06/13 - 20130139899 - Semipermanently closed microfluidic valve
A microfluidic valve operable to semi-permanently close a channel of a microfluidic device defined between a thermoplastic elastomer (TPE) film and a substrate operates employs a surface contact bond between the TPE and a wall of the channel. Thermomechanical release of the valve, tristate functionality, and repeated semi-permanent closure and...