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"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 8161993 | Subsea 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 max... | 04/24/2012 |
| 8156953 | Method and device for regulating a pressure in a hydraulic system The present invention relates to a method for regulating a pressure in a hydraulic system for operating at least one actuator in a subsea installation, having a fluid supply line (102) connected to a source of pressurized fluid (101) at a remote locati... | 04/17/2012 |
| 8127783 | Pressure-insensitive mass flow controller A method of preventing a mass flow controller from participating in crosstalk in an array of mass flow controllers is described. The method includes sensing and providing a signal indicative of a fluid pressure inside of a mass flow controller with a pressure sensor... | 03/06/2012 |
| 8037894 | Maintaining flow rate of a fluid A pressure gauge may be coupled to a supply line which carries liquid from a bottle to either one or more mixing vessels and/or one or more reactors in a combinatorial processing tool. A control device may monitor the pressure measured by the pressure gauge, and the... | 10/18/2011 |
| 8037893 | Optimizing thermal performance using thermal flow analysis A computer implemented method and system for optimizing thermal performance of a computer system. An identification of a set of processor cores associated with the computer system is made and a thermal index is requested for each of the set of processor cores to for... | 10/18/2011 |
| 8020574 | Method for closing fluid passage, and water hammerless valve device and water hammerless closing device used in the method A fluid passage is emergently-closed in a short time without causing a water hammer by an extremely simple device and operation. A water hammerless closing device includes an actuator operated valve provided in a fluid passage, an electro-pneumatic conversion device... | 09/20/2011 |
| 7931042 | Vacuum suction system and method of controlling the same A vacuum suction system comprises a work conveyor table 2 having work receiving openings 5, and a table base 3 having vacuum suction channels 7 which communicate with the work receiving openings 5 of the conveyor table 2. Th... | 04/26/2011 |
| 7878214 | Ullage pressure regulator A system for maintaining pressure in the liquid fuel tank of a high-speed flight vehicle, such as a hypersonic flight, scramjet powered air and space vehicle, manages tank ullage using a pressure regulator coupled to the fuel tank that supplies pressurized gaseous m... | 02/01/2011 |
| 7814922 | Apparatus for controlling the pressure in a process chamber and method of operating same A method of operating apparatus for controlling the pressure in a process chamber (10), the apparatus comprising a first pump unit (14) having an inlet in fluid connection with an outlet of said process chamber, and a second pump unit (16) havin... | 10/19/2010 |
| 7753067 | Shear valve employing two-stage poppet valve, particularly for use in fueling environments A shear valve employing a two-stage main poppet valve. The two-stage main poppet valve that can be opened with less force than normally required by prior art designs. For example, if there is pump pressure trapped on the upstream side of the two-stage main poppet va... | 07/13/2010 |
| 7740024 | System and method for flow monitoring and control One embodiment of the present invention can include a flow control device a flow control device that comprises an inlet, an outlet in fluid communication with the inlet, a pressure sensor, which may or may not be the only pressure sensor of the fluid control device,... | 06/22/2010 |
| 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 leaks which are difficult to locate and repair. A method and apparatus a... | 10/13/2009 |
| 7546846 | Pressure regulator A variable pressure regulator control device comprising a valve body having a fluid inlet, a fluid outlet, a fluid pressure-sensing chamber, and a valve seat in fluid communication with said inlet and defining an opening into said chamber, a resilient member having ... | 06/16/2009 |
| 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 inert gas to a location remote from the space. The oxygen sensor is fluid... | 01/27/2009 |
| 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 direct-pressure regulator (2) positioned upstream of said restr... | 10/21/2008 |
| 7424895 | 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. During an interval, gas is accumulated in a first volume and measurements tak... | 09/16/2008 |
| 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 accumulated in a first volume and while measurements are taken within ... | 08/19/2008 |
| 7370615 | Variable valve actuator Improved actuators and valve control systems, and methods for controlling actuators and/or engine valves, are disclosed. In addition to the inherent capability of timing control, the ability to provide continuous valve lift or stroke control greatly improves engine ... | 05/13/2008 |
| 7370666 | Power system with computer-controlled fuel system The present invention is a fuel-control system for a turbine which includes a programmable logic controller. The controller manages utility and stored natural gas sources using a surge tank and pressure-control valve arrangement and is backed up by a hydrogen-powere... | 05/13/2008 |
| 7369930 | Method and apparatus to control hydraulic pressure in an electrically variable transmission A method and apparatus to control an electrically variable transmission, by dynamically controlling system main hydraulic clutch pressures, based upon required clutch capacity, as determined by output load of the transmission. Included is a method to regulate hydrau... | 05/06/2008 |
| 7367352 | Multiway valve arrangement The valve device consists, according to the invention, of (at least) two part valves which are symmetrical in circuit terms with respect to the existing connections and which are designed, in particular, as four-way, two position valves of any desired type of constr... | 05/06/2008 |
| 7360551 | Method and apparatus for providing a determined ratio of process fluids A fluid flow control system that includes a fluid inlet to receive a flow of process fluid and a plurality of fluid outlets. The plurality of fluid outlets include a first fluid outlet and at least one second fluid outlet. The first fluid outlet provides a first pre... | 04/22/2008 |
| 7353837 | Pressure reducer with adjustable flow restrictor A pressure reducer has a housing comprising an inlet and an outlet in which a flow-around body is arranged in a flow channel connecting inlet and outlet. A flow restrictor is adjustably mounted relative to the flow-around body for varying a flow rate and is movably ... | 04/08/2008 |
| 7334602 | Apparatus for controlling flow rate of gases used in semiconductor device by differential pressure Provided is apparatus for controlling flow rate of gases used in semiconductor device by differential pressure by generating differential pressure in a fluid path. A differential pressure generation element generates pressure difference in the fluid path of gases us... | 02/26/2008 |
| 7334457 | Multi-capillary viscometer system and method This apparatus and method relates to the improved sensing of fluid differential pressures. The apparatus and method can be applied in multi-capillary solution viscometers and gel permeation chromatography systems used in the characterization of polymers. A valve is ... | 02/26/2008 |
| 7322372 | Fire-fighting monitor with remote control A pressure reducing valve for coupling to a pressurized water supply line includes a valve body with an inlet for coupling to the pressurized water supply line, an outlet, a passage extending between the inlet and the outlet, and a valve seat in the passage at or ad... | 01/29/2008 |
| 7321846 | Two-wire process control loop diagnostics A diagnostic device for coupling to a process control loop includes digital communication circuitry configured to receive a digital communication signal from the process control loop. The digital communication signal is a digitally modulated analog signal on the pro... | 01/22/2008 |
| 7318447 | Pressure loaded pilot system and method for a regulator without atmospheric bleed A pressure loaded pilot valve system and method for a regulator valve is provided. The system includes a regulator valve connecting an inlet line to an outlet line, a servo control valve assembly, and a pilot valve assembly. A supply line is connected to the servo c... | 01/15/2008 |
| 7314056 | Hydrogen supply method A hydrogen supply method using an inexpensive and compact hydrogen supply means to reduce a pressure of hydrogen stored in the hydrogen supply means and to supply efficiently hydrogen to a high pressure hydrogen storage means. Hydrogen is supplied under high pressur... | 01/01/2008 |
| 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 to a patient (36) along a first flow p... | 12/04/2007 |
| 7290450 | Process diagnostics A diagnostic device for use in a industrial process includes monitoring electronics or diagnostic circuitry configured to diagnose or identify a condition or other occurrence in the industrial process. The system can be implemented in a process device such as a flow... | 11/06/2007 |
| 7287541 | Method, apparatus and system for controlling fluid flow A system, apparatus and method of controlling the flow of a fluid are provided. In accordance with one embodiment of the present invention, a flow control device includes a valve having a flow path defined therethrough and a valve seat in communication with the flow... | 10/30/2007 |
| 7285066 | Multiplexed trim valve system for an electrically variable hybrid transmission A powertrain has an electrically variable hybrid transmission having an electro-hydraulic control system, plurality of electrical power units, and a plurality of torque transmitting mechanisms selectively engageable by the electro-hydraulic control system to provide... | 10/23/2007 |
| 7273063 | Methods and apparatus for pressure compensation in a mass flow controller Performance of mass flow controller may be vulnerable to pressure transients in a flow path to which the controller is coupled for the purpose of controlling the fluid flow. A system and method are provided for reducing or eliminate performance degradations, instabi... | 09/25/2007 |
| 7267112 | Evaporative emissions control system including a charcoal canister for small internal combustion engines An evaporative emissions control system for small internal combustion engines, including a charcoal canister which is in fluid communication with the air space above the liquid fuel within the carburetor of the engine and the air space above the liquid fuel within t... | 09/11/2007 |
| 7264327 | Pressure regulation by transfer of a calibrated gas volume Pressure regulation in a liquid reservoir such as an ink of a jet printing head, is obtained by transferring a calibrated gas volume through an auxiliary reservoir, said regulation is being applied to installations manufacturing intelligent portable objects and more... | 09/04/2007 |
| 7254518 | Pressure transmitter with diagnostics In one embodiment, a pressure transmitter is provided which diagnoses the condition of a primary element and/or an impulse line which connects to a pressure sensor. A difference circuit coupled to the pressure sensor has a difference output which represents the sens... | 08/07/2007 |
| 7246606 | Fuel return device for internal combustion engine The object of the present invention is to provide a fuel return device whereby the residual amounts of fuel in a plurality of fuel tanks can be made approximately equal. According to one preferred mode of the present invention, the fuel return device comprises: resi... | 07/24/2007 |
| 7243681 | Check valve A one-way valve which can be utilized in a toilet, particularly in a urinal, to prevent return flow of malodorous gases from the sewage system into the room wherein the toilet is installed has a body which is confined in the toilet. The body carries two sheet- or pa... | 07/17/2007 |
| 7222029 | Attitude insensitive flow device system and method Embodiments of the present invention provide systems and methods for attitude insensitive flow devices. One embodiment of the present invention can include a flow device comprising a processor and a computer readable medium accessible by the processor that stores a ... | 05/22/2007 |
