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| Number | Title | Issue Date |
| 7980265 | Valve responsive to fluid properties A valve for downhole use has the ability to throttle between fully open and closed and is fully variable in positions in between. The valve is preferably responsive to flowing fluid viscosity and uses a three dimensional flow through restrictor in combination with a... | 07/19/2011 |
| 6994102 | Pressure regulating valve A pressure regulating valve which is comprised of a valve body being comprised of a cylinder, a spool slidably disposed in the cylinder with a clearance, the spool and the cylinder defining a pressure chamber and a space portion, and an urging member which urges the... | 02/07/2006 |
| 6883957 | On chip dilution system An on-chip chemical compound dilution system for providing dilution of a chemical compound in a microfluidic application includes at least one sample well for providing a selected chemical compound to be diluted, a dilution well for providing a diluent for diluting ... | 04/26/2005 |
| 6789562 | Viscosity regulating valve The subject invention is a valve for regulating the viscosity of fluid. The valve includes a housing defining a bore having a first inlet supplying “cold” hydraulic fluid at a first viscosity and a second inlet supplying “hot” hydraulic fluid at a second vis... | 09/14/2004 |
| 6622746 | Microfluidic system for controlled fluid mixing and delivery A microfluidic system is provided for controlling delivery and mixing of thermally-responsive fluids. A plurality of microfluidic inlet channels open into a mixing chamber. A valve is associated with each of the inlet channels for controlling the flow of ... | 09/23/2003 |
| 6082629 | Photoresist suck-back device in manufacturing system for semiconductor devices A photoresist suck-back device is shown for a photoresist supply apparatus in a semiconductor device manufacturing system which prevents the accumulation of photoresist inside a photoresist spray line. The suck-back device is composed of a suck-back valve... | 07/04/2000 |
| 5942684 | Buoyancy force sensor for a hydrometer and interlock for a storage tank used in containing a respirable liquid cryogen A sensor for sensing buoyancy force within a liquid mixture stored within a storage tank and an interlock employing the sensor to prevent a respirable cryogenic mixture from being dispensed from the storage tank with an unsafe oxygen content. The sensor h... | 08/24/1999 |
| 5857661 | Valve drive control method, valve drive control apparatus and fluid member supply apparatus A valve drive control apparatus having a communication unit for communicating a flow-in-side tube path with a flow-out-side tube path, which guide a fluid member, and a control medium storage chamber into which an attenuation characteristic control medium... | 01/12/1999 |
| 5762134 | Hydraulic temperature compensated cooler bypass control for an automatic transmission A cooler bypass valve, located in a hydraulic circuit between the discharge side of a torque converter and lubrication circuit, includes a valve spool urged by feedback pressure acting in opposition to the force of a compression spring to a bypass cooling... | 06/09/1998 |
| 5411003 | Viscosity sensitive auxiliary circuit for hydromechanical control valve for timing control of tappet system A viscosity sensitive, pressure divider arrangement for use as part of an engine timing control tappet system where that system includes a block oil pressure supply, hydromechanical control valve and an oil sump, the pressure divider arrangement including... | 05/02/1995 |
| 5190075 | Viscosity-insensitive mechanical fluid flow regulator The differential-pressure-sensing and variable-area-occluding fundtions within variable-area flowmeters and flow regulators are performed by separate, but mechanically connected, elements. A housing defines a channel for guiding fluid flow from an upstrea... | 03/02/1993 |
| 4951873 | Multi-line electronic media barrier A multi-line electronic media barrier or safety system for preventing liquid contamination of air lines, including a capacitance proximity sensor for detecting a foreign undesirable medium such as paint in an air line. When foreign media is detected, a ma... | 08/28/1990 |
| 4869405 | Disposable package for dispensing liquids having viscosity compensation means and device therefor A device is provided which provides compensation for alterations in viscosity of liquids dispensed by gravity from containers such as those used in post-mix carbonated beverage dispensing systems. The device has a valve element which collects temporarily ... | 09/26/1989 |
| 4805659 | Method of driving a centrifuge and device for carrying out the method In centrifuges that concentrate liquids that contain suspended solids and wherein the concentrated solids are removed from the centrifuge at a constant rate, the concentration of solids leaving the centrifuge must be regulated. Some of the concentrated so... | 02/21/1989 |
| 4549570 | Waste disposal monitoring system A monitoring system (10) for a fluid waste disposal system is provided. Fluid waste is transported from a source (12) through a valve (16) to a reservoir (14) under access control provided by access switches (40). The monitoring system (10) includes densi... | 10/29/1985 |
| 4535919 | Hot melt adhesive system A hot melt foam adhesive system including a gear pump wherein gas is mixed under pressure into the molten adhesive and is driven into solution with the adhesive. The adhesive/gas solution is supplied at a relatively high pressure to a valved dispenser or ... | 08/20/1985 |
| 4199003 | Flow control system with density compensation Apparatus for continuously measuring and correcting for fuel density in an ircraft engine fuel metering system. Fuel, sampled at the inlet to the engine metering valve, is fed through a flow regulator to a vortex spin chamber in which the fuel is tangentia... | 04/22/1980 |
