| Patent application number | Description | Published |
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| 20080245136 | Closed Loop Flow Control of a Hplc Constant Flow Pump To Enable Low-Flow Operation - A method and apparatus for monitoring and controlling nano-scale flow rate of fluid in the operating flow path of a HPLC system provide fluid flow without relying on complex calibration routines to compensate for solvent compositions gradients typically used in HPLC. The apparatus and method are used to correct the flow output of a typical, analytical-scale (0.1-5 mL/min) HPLC pump to enable accurate anti precise flow delivery at capillary (<0.1 mL/min) and nano-scale (<μL/min) HPLC flow rates. | 10-09-2008 |
| 20080260558 | Device and Methods of Measuring Pressure - Embodiments of the present invention are directed to method and devices for measuring the pressure of a pump chamber in which no internal opening or connections are needed. One embodiment of the present invention is directed to an apparatus for pumping fluid. The apparatus comprises at least one housing having a transducer surface. The transducer surface has a thickness exhibiting measurable deformation upon the chamber holding a fluid under pressure such that the transducer surface has a first position at which the chamber is at one pressure and a second position at which the chamber is at a second pressure. A strain sensor is affixed to the transducer surface producing; at least one signal upon the transducer surface assuming the first position and at least one signal upon the transducer surface assuming the second position to function as an integrated pressure transducer. | 10-23-2008 |
| 20100012192 | ACTIVE VALVE AND METHODS OF OPERATION THEREOF - A valve including a linear positioning component operatively connected to a valve body and an actuating element. | 01-21-2010 |
| 20100024906 | PUMP - Embodiments of the present invention are directed to devices and methods for propelling fluids that feature at least one first pump assembly having a primary pump, an accumulator pump, drive means, valve means and control means. The valve means moves between the first position and the second position as the accumulator pump and primary pump alternate between a loading movement and a pump movement. The control means is in signal communication with the accumulator pump, the primary pump and the valve means. The control means issues signal command to the accumulator pump to assume the loading movement and the pump movement and the primary pump to assume the loading movement and pump movement in coordination with the movement of the valve means such that fluids are propelled from the first outlet. | 02-04-2010 |
| 20100108164 | DEFINED LEAK PATH FOR HIGH PRESSURE SEAL - Embodiments of the present invention are directed to methods and devices for conveying or containing fluids under pressure in which seals are provided with a defined path to vent fluid in the event of a seal failure. | 05-06-2010 |
| 20100116745 | Closed Loop Flow Control Of A HPLC Constant Flow Pump To Enable Low-Flow Operation - A method and apparatus for monitoring and controlling nano-scale flow rate of fluid in the operating flow path of a HPLC system provide fluid flow without relying on complex calibration routines to compensate for solvent composition gradients typically used in HPLC. The apparatus and method are used to correct the flow output of a typical, analytical-scale (0.1-5 mL/min) HPLC pump to enable accurate and precise flow delivery at capillary (<0.1 mL/min) and nano-scale (<1 μL/min) HPLC flow rates. | 05-13-2010 |
| 20110272855 | Techniques For Patterning Valve Components - Described are techniques for fabricating one or more parts of a valve used in a liquid chromatography system. At least one of a rotor and a stator are provided. The rotor is included in the valve and has a first surface facing a stator. The stator is included in the valve and has a second surface facing the rotor. A pattern is formed in at least one of the first surface and the second surface. Forming the pattern includes compressing the at least one surface by applying pressure thereto causing displacement of material to form at least one groove. | 11-10-2011 |
| Patent application number | Description | Published |
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| 20100180595 | STIRLING ENGINE SYSTEMS, APPARATUS AND METHODS - Systems, methods, and apparatus relating to the use of Stirling engine technology to convert heat, such as from solar radiation, to mechanical work or electricity. Apparatus, systems, components, and methods relating to energy converting apparatus are described herein. In one aspect, the invention relates to the field alignment of panels and the assembly of a concentrator. In another aspect, a passive balancer is used in combination with a ring frame and other moving masses to reduce engine forces and vibration on the structure of the energy converting apparatus while maintaining properly constrained alignment of various suspended masses. In yet another aspect, the invention relates to various over-insolation control and management strategy to prevent overheating of the energy converting apparatus or components and subsystems thereof. | 07-22-2010 |
| 20120096858 | HEATER HEAD FOR ENERGY CONVERTER - In part, the invention relates to a heater head that includes a heat absorber plate that forms a substantially concave surface and a manifold comprising a headwall for engaging a heat engine, the manifold forming a concave depression for receiving the heat absorber plate. In various embodiments, the manifold forming a plurality of fluid channels to carry fluid between the heat absorber plate and the heat engine. The heater is suitable for use with energy converting devices, such as Sterling engines. | 04-26-2012 |
