Patents
Patents for F04D 1 - Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (3,447)
07/1999
07/14/1999CN2328815Y Double stage parallel fire fighting pump
07/14/1999CN2328814Y Direction changeable single stage single suction centrafugal pump
07/14/1999CN1222653A Centrifugal pump
07/13/1999US5921750 Compact interbowl assembly coupler for vertical turbine pumps
07/07/1999CN2327813Y Centrifugal pump with overload protector
07/07/1999CN2327812Y 水泵 Pump
06/1999
06/30/1999CN2326763Y Overlapped-rings centrifugal sealed water pump
06/23/1999CN2325563Y Emergency fire fighting pump used in ship
06/23/1999CN2325562Y 叶片泵 Vane pump
06/23/1999CN2325561Y Strong self-suction type centrifugal pump
06/23/1999CN1220351A Drainage pump
06/09/1999EP0920592A1 Pump shaft sealing system
06/03/1999WO1999027257A2 Stage in a submerged multiple-stage pump
06/02/1999DE19752877A1 Molecular impulse pressure pump for linear increase of pressure, quantity and speed efficiency
06/02/1999CN2321961Y Centrifugal type heat-pump device for steam mixing machine
06/02/1999CN2321960Y Self-suction dirty-discharging pump
06/02/1999CN1218148A Pump impeller
05/1999
05/27/1999WO1999025980A1 High speed self-lubricated fuel pump with hydrostatic bearings
05/26/1999CN2320823Y Hand electric oil drum pump
05/26/1999CN2320822Y Large blowing rate inserted centrifugal fan
05/26/1999CN1217435A Pump vane
05/19/1999EP0916852A1 A pump impeller
05/19/1999EP0916851A1 A pump impeller
05/19/1999EP0916850A1 Casing for aggregate containing a high pressure fluid
05/12/1999CN2318433Y Improved centrifugal pump
05/12/1999CN2318432Y Strong self-suction multi-stage centrifugal water pump with suction and exhaust device
05/12/1999CN2318431Y Strong self-suction centrifugal water pump fitted with suction and exhaust device
05/06/1999WO1999022144A1 Pitot tube pump having axial-stabilizing construction
05/05/1999CN2317339Y Pump structure
05/05/1999CN1216098A 5 or 8 kw refrigerating system and centrifugal compressor assembly for said system
04/1999
04/28/1999CN2316490Y Symmetric interchange type fast thread detaching and mounting dual-purpose centrifugal water pump
04/27/1999CA2145857C Sealless rotodynamic pump
04/22/1999WO1999019627A1 Lubricating system, preferably for refrigerating machinery and comprising a pitot tube pump
04/21/1999CN2315336Y Self water supply type external motive power apparatus
04/21/1999CN1214415A Pump with storage tank
04/14/1999EP0908628A2 Pump with storage tank
04/14/1999EP0907829A1 A movable inlet gas barrier for a free surface liquid scoop
04/14/1999CN2314129Y Multifunctional pipeline pump with high coaxality
04/13/1999US5893703 Pump shaft sealing system
04/08/1999WO1999017024A1 A turbo type fluid machinery
04/08/1999WO1999017022A1 A fluid machinery, a flange for fluid machinery, and a method for manufacturing them
04/07/1999CN2313083Y Self-suction centrifugal pump
03/1999
03/31/1999EP0905379A1 Centrifugal pump and centrifugal pump arrangement
03/30/1999US5888053 Pump having first and second outer casing members
03/24/1999CN2311646Y Horizontal centrifugal pump bearing oil lubrication structure
03/24/1999CN2311637Y Two-phase fluid pump
03/24/1999CN2311636Y Glass fiber reinforced plastics corrosion resistant pump
03/24/1999CN2311635Y Combined water pump
03/23/1999US5885058 Multiphase fluid pumping or compression device with blades of tandem design
03/17/1999CN2310880Y Agricultural submersible spray pump
03/17/1999CN2310876Y Vertical electric auto-control self-priming pump in well
03/17/1999CN2310875Y Pressure pump with pressure preset device
03/10/1999CN2310184Y Single-stage suction type cantilever condensation pump
03/03/1999CN2309447Y Vertical double-absorption centrifugal pump
03/03/1999CN1209509A Method for increasing pumping-effciency and reducing specific gravity
02/1999
02/27/1999CA2241508A1 Pitot tube pump
02/24/1999CN2308743Y 紧凑型卧式离心泵 Compact horizontal centrifugal pump
02/24/1999CN2308742Y Ti welded centrifugal pump
02/24/1999CN2308741Y Self-sucking centrifugal pump with air extracting wheel
02/24/1999CN2308740Y High efficiency energy saving water drawing machine
02/24/1999CN2308739Y Combined sealing chemical centrifugal pump
02/23/1999US5873696 Fluid handling pump
02/17/1999CN2307952Y Water pump with filter structure
02/17/1999CN2307941Y Pump for outlet active water for crop
02/17/1999CN2307938Y Axial separated type double-sucking centrifugal pump
02/17/1999CN2307937Y Self-absorption blower pump for pipeline of running water
02/17/1999CN1208126A Deep water pumping centrifugal pump system
02/11/1999WO1999006711A1 Magnetic-drive assembly for a multistage centrifugal pump
02/11/1999WO1998048167A3 Mechanism for providing motive force and for pumping applications
02/10/1999CN2307130Y Reinforced plastic liquid flow pump
02/10/1999CN2307129Y Spiral-flow type sewage drainage pump
02/10/1999CN2307128Y Centrifugal pump
02/10/1999CN2307127Y Flexible long axle water pump
02/03/1999CN2306343Y Vertical hot water supplying pump for boiler
02/03/1999CN2306342Y Water inlet locking unit joint-type water pump
02/03/1999CN2306341Y Self-sucking type centrifugal pump
01/1999
01/20/1999CN2304771Y Tight sealed multi-stage eccentric pump
01/20/1999CN2304770Y Double casing and multi-stage eccentric pump for light hydrocarbons
01/20/1999CN1205398A Multifunctional pump
01/19/1999CA2106861C Grit protector
01/14/1999WO1999001663A1 Improved rotor for blood pump
01/13/1999CN2303953Y Domestic blower pump convenient for fitting
01/13/1999CN2303952Y Gas-liquid two-phase centrifugal pump
01/12/1999US5857841 Full-circumferential flow pump
01/06/1999CN2303102Y Multi-stage centrifugal pump with constant pressure
01/06/1999CN2303101Y Up-side down type submersible pump
12/1998
12/30/1998CN2302357Y Low-noise radiator
12/16/1998CN2300745Y Centrifugal pump
12/09/1998CN2299952Y Double-sucking centrifugal pump
12/08/1998US5846055 Structured surfaces for turbo-machine parts
12/08/1998US5846052 High-pressure multistage pump
12/08/1998US5845709 Recirculating pump for electrical submersible pump system
12/02/1998CN2299172Y Gas/solid wear-resisting centrifugal fan
12/02/1998CN2299171Y Combined centrifugal pipeline pump
11/1998
11/25/1998EP0879359A1 A centrifugal pump device
11/19/1998DE19718283C1 Centrifugal pump for viscous, foamed and boiling liquids
11/18/1998CN2297571Y Single stage centrifugal pump
11/18/1998CN2297570Y 增压泵 Booster
11/18/1998CN2297569Y Middle-high voltage quasi-ternary energy-saving centrifugal fan with single-plate vane
11/04/1998CN2296112Y Sprinkler
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