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7617949 |
Flow volume limiting device
A turbine wheel and gear system rotate an output shaft in response to flow, where the output shaft is connected to a clutch cup that engages a clutch and valve disk. The disk cooperates with a...
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7600525 |
Leak detection and isolation for segmented inflatable structures
Space vehicles such as space stations are often constructed as segmented inflatable structures which are susceptible to being punctured by small meteoric materials, resulting in small insidious...
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7552015 |
Apparatus and method for displaying mass flow controller pressure
A mass flow controller includes a pressure sensor that senses pressure within the mass flow controller and displays the pressure. The pressure display may be local, mounted directly to the mass...
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7539560 |
Control valve and positioner diagnostics
Valve positioning systems may include one or more components and a controller. Components may include one or more electric-to-pressure output converters, relays, gas supplies, and/or actuators. A...
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7517440 |
Electrokinetic delivery systems, devices and methods
A method of pumping fluid including the steps of providing an electrokinetic pump comprising a pair of double-layer capacitive electrodes having a capacitance of at least 10 −2 Farads/cm 2 and...
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7481237 |
System and method for monitoring the performance of an inert gas distribution system
The gas monitoring system may include a gas line, an oxygen sensor, a filter, a pump, a indicator, and a controller. The gas line is configured to convey gas from a space configured to receive...
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7464721 |
Process equipment validation
A Safety Instrumented System for use with a process control system receives pressure of process fluid in the process piping. A valve positioner positions a valve which controls flow of process...
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7437906 |
Flow regulator device for an analytical circuit and its use in chromatography
A flow regulator device for an analytical circuit, characterised by comprising: a fluid restriction (R) of defined characteristics related to the field of application of the analytical circuit, a...
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7412986 |
Method and system for flow measurement and validation of a mass flow controller
Systems and methods for flow verification and validation of mass flow controllers are disclosed. A mass flow controller may be commanded to a specified flow and flow measurement commenced. Gas is...
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7302960 |
Momentary high pressure valve
A valve ( 10 ) comprises a housing ( 12 ) with a valve element ( 14 ) which normally fluidicly couples a low pressure operating device, such as a transducer ( 30 ) and tubing ( 34 ) to be coupled...
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7258127 |
Pressure diverter valve and system
A valve, system and method for the delivery of gases or liquids is shown where the delivery persons can fill the system without having to enter the building and the system can continue to deliver...
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7209806 |
Self-contained electronic pressure monitoring and shutdown device
The invention is a self-contained process shutdown device that detects abnormal pressures and initiates shutdown by removing the pneumatic or hydraulic pressure needed for a given process or flow...
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7189580 |
Method of pumping fluid through a microfluidic device
A method is provided for pumping fluid through a channel of a microfluidic device. The channel has an input port of a predetermined radius and an output port of a predetermined radius. The channel...
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7189581 |
Method of obtaining a sample concentration of a solution in a microfluidic device
A method is provided of obtaining a sample concentration of a solution in a microfluidic device. The microfluidic device includes a channel having a reservoir and a collection port. The channel is...
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7178545 |
Modulating bypass control system and method
A control system for a bypass duct includes a pneumatic damper control assembly, a sensor and a pneumatic switch. The damper control assembly includes a damper vane mountable in the bypass duct for...
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7177725 |
System for the monitor and control of rest rooms
The present invention is directed to a rest room control system including one or more sensors configured to monitor or control a function associated with the rest room. The system also includes a...
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7159602 |
Flow-measuring valve device and method
A flow measuring valve device ( 1 ) for fluid, the flow measuring valve ( 1 ) comprising a first restriction ( 48 ) and a second restriction ( 76 ) connected in series with the first restriction (...
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7131451 |
Apparatus for controlling and metering fluid flow
A device for metering and controlling fluid flow includes a variable orifice and is configured to use a pressure sensor. The device includes a fluid flow conduit having at least one planar inner...
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7073873 |
Dash control valve with two step function for park release
A valve assembly for an air pressure system includes an inlet valve, a first control valve, and a second control valve. The inlet valve includes an inlet port, an outlet port and a control port....
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7066190 |
Air-driven microfluid control device and method
An air-driven microfluid control device and its method are disclosed. The control device contains an air source, a first inlet, a second inlet, a narrow sector, and an outlet. The air source is...
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7032606 |
Manifold system and method for compressed medical gases
A manifold system is provided herein. The manifold is operative to automatically switch between an In-Use supply of compressed gas to a Reserve supply of compressed gas. The manifold system is...
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7013916 |
Sub-atmospheric gas delivery method and apparatus
An apparatus for containing and delivering hazardous gases at sub-atmospheric pressure from a pressurized container is provided which includes a valve body in sealed communication with an outlet...
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7007708 |
Flow control valve
A valve mechanism to control fluid flow between a fluid pumping device and a system that includes an inlet from the fluid pumping device, a first valve, a second valve, a first outlet fluidly...
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7004186 |
Surge relief apparatus for a valve
A valve apparatus that includes surge relief includes a valve housing having an inlet port, an outlet port, and a poppet seat between the inlet port and the outlet port. The valve also includes a...
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6990993 |
Vacuum drainage system
A vacuum drainage system operable to remove waste from a source. The system includes an accumulator in fluid communication with the source and a substantially vertical riser having a first portion...
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6986357 |
Method of designing a fuel vapor pressure management apparatus
A method of designing a fuel vapor pressure management apparatus that performs leak detection on a headspace of a fuel system. A pressure operable device separates the housing into first and second...
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6945265 |
Regulator with multiple flow diffusers
A flow-through pressure regulator includes a retainer that secures a diaphragm relative to a seat, and includes an intermediate portion, an end portion and a base portion. The intermediate portion...
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6938638 |
Gas circulating-processing apparatus
A gas-circulating processing apparatus which comprises a processing chamber, a gas feeding piping, a gas supply piping, a first exhaust mechanism discharging a gas from the processing chamber, a...
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6923197 |
Pressure regulator with tamper-proof safety feature
A pressure regulating system having a tamper-proof safety feature. A pair of seats are mounted to an annular pipe. A first bleed pipe, with a fixed restriction, extends from an inlet conduit to a...
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6924004 |
Apparatus and method for synthesizing films and coatings by focused particle beam deposition
A particle beam deposition apparatus includes a particle source for generating a plurality of particles in suspended form, an expansion chamber, and a deposition chamber connected to the expansion...
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6920890 |
Airflow controller
The invention provides an airflow controller for a propulsion inlet system including a bleed section having two or more bleed plenum chambers, each of the chambers having a porous inlet surface and...
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6913031 |
Pulse shot type flow controller and pulse shot type flow controlling method
A flow controller and a flow controlling method are adapted to be released from conventional restrictions by using a novel type called a pulse shot type. A pulse shot (opening/closing operation of...
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6910493 |
Control apparatus, method and diagnostic for hydraulic fill and drain
Hydraulic fill and drain of a clutch chamber is controlled with a blocking valve and a trim valve. The blocking valve selectively provides pressurized fluid to the trim valve which in turn...
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6904925 |
Gas assist mold dump valve
This invention concerns a gas assist mold dump valve positioned between a gas controller and a mold cavity. Preferably, the valve includes a pressure regulator having a body with a gas inlet and a...
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6899122 |
Safety shutoff apparatus and method
Safety shutoff apparatus can close a valve using a pressure operable device coupled to and acting upon the valve. The proximal end of a pressure line is coupled to the pressure operable device for...
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6878037 |
Slurry pump control system
A CMP slurry pumping system and method which uses the slurry pump inlet pressure as input to the pump controller, and the controller adjusts pump speed to account for variations in inlet pressure.
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6874521 |
High to low gas flow regulator
A diaphragm operated regulator valve usable, e.g., for maintaining a preset gas pressure in a potable storage container, provides particularly effective at gas flow regulation as well as pressure...
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6855031 |
Slurry flow rate monitoring in chemical-mechanical polisher using pressure transducer
In a first aspect of the invention, a polishing device is provided. The polishing device includes a platen adapted to support a polishing pad and also includes a source of polishing slurry. Also...
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6834661 |
Dual mode solenoid valve with pressure regulation
A control valve system includes a housing having an inlet port, a first output port, a second output port, and a valve chamber. A primary spool and a secondary spool are independently slidable in...
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6830061 |
Intelligent regulator with input/output capabilities
An intelligent fluid flow regulation device that includes a pressure regulator within a fluid flow passage that has an associated throttling element moveable in the flow passage. A number of...
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6820631 |
Method for the continuous control of a position of a control valve
A method is for the continuous control of a position of a control valve. A control deviation from a position of the control valve, is determined as a controlled variable, in relation to a reference...
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6802330 |
Auto-relieving pressure modulating valve
An auto-relieving pressure modulating valve includes a spool, a solenoid that shifts the spool in an energized direction, and a spring arrangement. The spring arrangement functions to shift the...
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6792962 |
Enhanced backflow prevention apparatus and method
A backflow prevention apparatus and method are provided for use in irrigation systems. An anti-siphoning device may have a housing, a plunger, a plunger retainer, and a cap. The housing has inlet...
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6789559 |
Pressure regulator
A fluid pressure regulator is provided having a housing with an inlet and outlet for fluid, a valve located movably inside the housing and provided with a fluid transport member to allow passage of...
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6782907 |
Gas recirculation flow control method and apparatus for use in vacuum system
A gas recirculation flow control method and apparatus for use in an evacuation system having a vacuum chamber into which a gas is introduced, a first vacuum pump for exhausting the gas from the...
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6766810 |
Methods and apparatus to control pressure in a supercritical fluid reactor
The present invention pertains to methods and apparatus for controlling the pressure in a supercritical processing system. Active methods for controlling the pressure include anticipating a...
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6763843 |
Automatically switching valve with remote signaling
A programmable circuit detects drop in pressure of a supplied pressurized gas below a predetermined threshold pressure and automatically switches to a different supply of pressurized gas and...
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6742534 |
Method of damping surges in a liquid system
A method of damping surges in a liquid system includes providing in the system, a surge vessel in which there is trapped air or other gas, the surge vessel being positioned so that in the event of...
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6736881 |
Method and arrangement for cleaning pipe-shaped filter elements
In a method and apparatus for cleaning pipe-shaped filter elements arranged in a housing including a separation wall dividing the housing into a clean gas space and a raw gas space into which the...
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6725131 |
System and method for controlling hydraulic flow
A method is provided for controlling hydraulic flow through a valve in fluid communication with a pump and a hydraulic actuator. The method includes monitoring load pressure of the valve, and...
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