| Patents for F04D 27 - Control, e.g. regulation, of pumps, pumping nstallations or pumping systems specially adapted for elastic fluids (9,590) |
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| 12/09/2004 | US20040246138 Method and apparatus for monitoring motor rotation speed |
| 12/09/2004 | US20040244393 Variable speed compressor cooling system |
| 12/09/2004 | DE202004012224U1 Kühlventilator mit handverstellbarer Drehzahl Cooling fan with variable speed hand |
| 12/02/2004 | US20040240990 Variable vane arrangement for a turbomachine |
| 12/02/2004 | US20040240985 Gas turbine engine |
| 12/01/2004 | EP1482128A1 Supercharged Internal combustion engine |
| 12/01/2004 | CN2660184Y Temp control governor of electric fan |
| 11/30/2004 | US6824362 Fan control system |
| 11/30/2004 | US6824349 Vacuum pump |
| 11/24/2004 | EP1478857A1 Anti-stall tip treatment means for turbo-compressors |
| 11/24/2004 | EP1478828A1 Recirculation structure for turbo chargers |
| 11/24/2004 | CN2658436Y Ceiling fan with overload protection device |
| 11/24/2004 | CN2658435Y Two-purpose ceiling fan with remote controller and wall-control switch |
| 11/23/2004 | US6823254 Method and system for turbomachinery surge detection |
| 11/23/2004 | US6820429 Adaptive acceleration schedules for gas turbine engine control systems |
| 11/18/2004 | US20040228747 Molecular drag, turbomolecular, or hybrid pump with an integrated valve |
| 11/18/2004 | DE19501816B4 Radialgebläse, insbesondere für Gebläsebrenner Radial fan, especially for jet burner |
| 11/17/2004 | EP1477684A1 Molecular,turbo-molecular or hybrid pump with intergral valve |
| 11/17/2004 | EP1476662A1 Side-channel blower |
| 11/17/2004 | CN1546866A Remote control device for hanging fan |
| 11/16/2004 | US6817186 Operation control apparatus and operation control method for single-shaft combined plant |
| 11/11/2004 | WO2004078018A3 Multi-pump suctioning device |
| 11/11/2004 | US20040221592 Methods for detecting surge in centrifugal compressors |
| 11/10/2004 | EP1475517A1 Fixing an actuator lever to the shaft of a variable guide vane while compensating play |
| 11/10/2004 | EP1474610A1 Warning before pump limit or in case of blade failure on a turbomachine |
| 11/09/2004 | US6814546 Multifan-equipped apparatus for cooling objects mounted at local interior regions and provided with fan-unit assembly and operation monitoring means having an error detector |
| 11/09/2004 | US6814540 Rotating vane diffuser for a centrifugal compressor |
| 11/09/2004 | US6814536 Vacuum pump |
| 11/09/2004 | US6813887 Exhaust-gas turbocharger for an internal combustion engine, and method for operating a turbocharged internal combustion engine |
| 11/04/2004 | WO2004094925A2 Methods for detecting surge in centrifugal compressors |
| 11/03/2004 | EP1473465A1 Compressor |
| 11/03/2004 | EP1473463A1 Compressor |
| 11/03/2004 | CN2653185Y Fan controller |
| 11/03/2004 | CN2653184Y Monitor for live inserting and pulling fan |
| 11/03/2004 | CN2653183Y 触摸开关电风扇 Touch Switch Fan |
| 11/03/2004 | CN2653182Y Stepless fan control device |
| 11/03/2004 | CN1543034A Fan protective device and method |
| 11/03/2004 | CN1542290A Compressor |
| 11/03/2004 | CN1542289A Compressor |
| 11/02/2004 | US6812658 Drive unit |
| 10/28/2004 | DE202004011074U1 Air filter and ventilator for electronic equipment e.g. personal computer, detects filter blockage by measurement of pressure difference |
| 10/27/2004 | CN2651477Y 离心通风机 Centrifugal Fan |
| 10/26/2004 | US6807926 Control method for outside control type fan coupling apparatus |
| 10/21/2004 | WO2004090479A1 Air capture device for flow measurement |
| 10/21/2004 | US20040207966 Fan protection method and apparatus |
| 10/20/2004 | EP1200741B1 Turbocharger |
| 10/20/2004 | EP1105964B1 Circuit for regulating the rotational speed of a fan |
| 10/20/2004 | CN2649822Y Remote control fan for computer host |
| 10/20/2004 | CN1538072A Backblash regulation mechanism for centrifugal compressor |
| 10/14/2004 | WO2004087982A2 Fan blade protector |
| 10/14/2004 | US20040202534 Fan control apparatus and fan control method |
| 10/13/2004 | CN2648126Y Radiating fan with adjustable rotating speed |
| 10/13/2004 | CN2648125Y Micromachine fan silencer |
| 10/13/2004 | CN2648117Y Adjustable pressure inflating device |
| 10/13/2004 | CN1536232A Fan monitoring device and its monitoring method |
| 10/13/2004 | CN1536231A Method of controlling turbine machine having inlet quide blade and rotary wheel |
| 10/13/2004 | CN1171020C Centrifugal compressior |
| 10/12/2004 | US6802689 Turbo type fluid machine and dry gas seal for use therefor |
| 10/07/2004 | WO2004084665A2 Respirator |
| 10/07/2004 | US20040194477 Electronically controlled vacuum pump gauge |
| 10/07/2004 | DE10310650A1 Compressor in internal combustion engine induction tract has shut-off element axially movable in compressor inlet channel, electric motor for driving compressor wheel shaft |
| 10/07/2004 | CA2520542A1 Respirator |
| 10/06/2004 | EP1463889A1 Compressor unit with control system |
| 10/05/2004 | US6799951 Compressor degradation detection system |
| 09/30/2004 | US20040193355 Method and system for turbomachinery surge detection |
| 09/30/2004 | US20040191087 Ceiling fan with bi-directional rotation control |
| 09/30/2004 | DE10232717B4 Gebläseansteuerung für Kühlungsgebläse an Fahrzeugen Fan control for cooling fan on vehicles |
| 09/29/2004 | CN2644739Y Human body inductive exhaust fan |
| 09/29/2004 | CN2644732Y Built-in ring form pipeline type ventilation fan |
| 09/29/2004 | CN1532424A Method for stopping rotation by touching fan and product |
| 09/29/2004 | CN1168899C Turbomachinery driving apparatus and method of controlling the same |
| 09/28/2004 | US6796767 Device for controlling a variable-angle vane via a slack-free connection |
| 09/23/2004 | DE19913593B4 Gesteuerter Pumpstand Controlled Pumping Station |
| 09/22/2004 | EP1460273A1 Ventilation apparatus |
| 09/21/2004 | US6794766 Method and operational strategy for controlling variable stator vanes of a gas turbine power generator compressor component during under-frequency events |
| 09/21/2004 | US6793456 Turbo-compressor and capacity control method thereof |
| 09/21/2004 | US6793455 Method and apparatus for active control of surge in compressors |
| 09/16/2004 | WO2004078018A2 Multi-pump suctioning device |
| 09/16/2004 | US20040179830 PWM driving apparatus |
| 09/15/2004 | EP1458085A2 PWM output driver for two loads |
| 09/15/2004 | EP1457640A2 Tubular vortex streamer for gas turbine and their support ring |
| 09/15/2004 | CN2641339Y Fully automatic double power graught fan |
| 09/14/2004 | CA2324812C Organic debris collection device with curved blower conduit |
| 09/10/2004 | WO2004077005A1 Test-gas leak detector |
| 09/10/2004 | WO2004042289A3 Boiler |
| 09/09/2004 | US20040174127 Downhole compressor system with a feedback sensor |
| 09/09/2004 | US20040173346 Variable speed fan motor control for forced air heating/cooling system |
| 09/09/2004 | DE10308420A1 Testgaslecksuchgerät Test Gas Leak Detector |
| 09/08/2004 | EP1455093A1 Downhole compressor system |
| 09/08/2004 | EP1455067A2 Stall detection and recovery system for a gas turbine engine |
| 09/07/2004 | CA2300606C Gas turbine starting method |
| 09/01/2004 | EP1452742A1 Pre-whirl generator for radial compressor |
| 09/01/2004 | EP1452705A1 Rotational speed control system for a hydraulic motor in particular for a fan of an automotive vehicule |
| 09/01/2004 | EP1451914A1 Method for detecting a defective cooling fan and for generating an alarm signal |
| 09/01/2004 | EP1007832B1 Device for compressing a gaseous medium and systems comprising such device |
| 09/01/2004 | CN1525272A Fan controlling equipment and method |
| 09/01/2004 | CN1525073A Method for monitoring run of fan |
| 08/26/2004 | US20040165984 Centrifugal air blower unit having movable portion |
| 08/26/2004 | US20040164692 Speed control circuit of brushless DC fan motor |
| 08/25/2004 | EP1450328A2 System for remote monitoring of centrifugal machines |