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Class Information
Number: 415/1
Name: Rotary kinetic fluid motors or pumps > Method of operation
Description: Process of ACQUISITION PROCUREMENT PLAN.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Patent Number Title Of Patent Date Issued
6135707 Steam turbine with a condenser and method of cooling a steam turbine in the ventilation mode Oct. 24, 2000
6129507 Method and device for reducing axial thrust in rotary machines and a centrifugal pump using same Oct. 10, 2000
6129511 Method and apparatus for controlling interaction between variable guide vanes and variable diffuser of a centrifugal compressor Oct. 10, 2000
6109863 Submersible appartus for generating electricity and associated method Aug. 29, 2000
6065930 Cooling control apparatus May. 23, 2000
6059522 Compressor stall diagnostics and avoidance May. 9, 2000
6050772 Method for designing a multiblade radial fan and a multiblade radial fan Apr. 18, 2000
6042331 Pump-turbine Mar. 28, 2000
6027305 Method and apparatus for reducing high-cycle fatigue and suppressing noise in rotating machinery Feb. 22, 2000
6015263 Fluid moving device and associated method Jan. 18, 2000
5984625 Actuator bandwidth and rate limit reduction for control of compressor rotating stall Nov. 16, 1999
5980199 Performance centrifugal blower apparatus including at least two suction inlets, and associated blower method Nov. 9, 1999
5967742 Method and apparatus for preventing surge while taking a turbocompressor off-line from a parallel configuration Oct. 19, 1999
5951240 Method and apparatus for improving antisurge control of turbocompressors by reducing control valve response time Sep. 14, 1999
5934871 Method and apparatus for supplying a anti-oxidizing gas to and simultaneously cooling a shaft and a fan in a heat treatment chamber Aug. 10, 1999
5924844 Dissolved gas augmentation with mixing chambers Jul. 20, 1999
5915917 Compressor stall and surge control using airflow asymmetry measurement Jun. 29, 1999
5908462 Method and apparatus for antisurge control of turbocompressors having surge limit lines with small slopes Jun. 1, 1999
5868550 Pump assembly Feb. 9, 1999
5842832 Pump for pumping molten metal having cleaning and repair features Dec. 1, 1998
5798941 Surge prevention control system for dynamic compressors Aug. 25, 1998
5782603 Process and apparatus for recovery from rotating stall in axial flow fans and compressors Jul. 21, 1998
5754446 Method and apparatus for optimizing performance of a kaplan turbine May. 19, 1998
5743714 Method and apparatus for minimum work control optimization of multicompressor stations Apr. 28, 1998
5743715 Method and apparatus for load balancing among multiple compressors Apr. 28, 1998
5709526 Surge recurrence prevention control system for dynamic compressors Jan. 20, 1998
5676526 Method of eliminating bubbles in a medical centrifugal pump using speed variations Oct. 14, 1997
5658125 Magnetic bearings as actuation for active compressor stability control Aug. 19, 1997
5653577 Turbine, in particular Francis turbine Aug. 5, 1997
5615996 Method for prediction of the performance of a centrifugal pump with a thrust balance mechanism Apr. 1, 1997
5609465 Method and apparatus for overspeed prevention using open-loop response Mar. 11, 1997
5605437 Compressor and method of operating it Feb. 25, 1997
5599161 Method and apparatus for antisurge control of multistage compressors with sidestreams Feb. 4, 1997
5553995 Method of driving a turbine in rotation by means of a jet device Sep. 10, 1996
5551837 Apparatus for regulating the transport flow of a liquid that is circulated by a centrifugal pump in a closed pipe system Sep. 3, 1996
5547337 Method and closed-loop control device for the closed-loop control of a turbine-generator configuration Aug. 20, 1996
5525032 Process for the operation of a fluid flow engine Jun. 11, 1996
5508943 Method and apparatus for measuring the distance of a turbocompressor's operating point to the surge limit interface Apr. 16, 1996
5464591 Process and apparatus for controlling and metering the pneumatic transfer of solid particulates Nov. 7, 1995
5388956 Fan assembly and method for reducing fan noise Feb. 14, 1995
5372474 Gravity-assisted rotation device Dec. 13, 1994
5347467 Load sharing method and apparatus for controlling a main gas parameter of a compressor station with multiple dynamic compressors Sep. 13, 1994
5346359 Method of adjusting a wicket gate Sep. 13, 1994
5340271 Flow control method and means Aug. 23, 1994
5330318 Centrifugal pump with an improved axial diffusor Jul. 19, 1994
5322412 Method and apparatus for optimizing the operating parameters of a double-regulated water turbine Jun. 21, 1994
5312226 Turbo compressor and method of controlling the same May. 17, 1994
5290142 Method of monitoring a pumping limit of a multistage turbocompressor with intermediate cooling Mar. 1, 1994
5275528 Flow control method and means Jan. 4, 1994
5256031 Device and method for reducing one or more resonant vibrations of rotor blades in turbomachines Oct. 26, 1993

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