| Patents for F04D 13 - Pumping installations or systems (12,375) |
|---|
| 06/14/1989 | EP0320429A2 Multistage centrifugal sump pump |
| 06/14/1989 | EP0320061A2 Pump device for low-viscosity liquids |
| 06/14/1989 | EP0320060A2 Pump device for low-viscosity liquids |
| 06/13/1989 | US4838763 Canned motor pump |
| 06/13/1989 | US4838758 Reduced diameter downthrust pad for a centrifugal pump |
| 06/07/1989 | EP0318638A2 Containment assembly |
| 06/06/1989 | US4837472 Inner magnet rotor for magnet pump |
| 06/06/1989 | US4836340 Anti-backlash device for a pump shaft |
| 06/06/1989 | US4836147 Cooling system for an internal combustion engine |
| 06/01/1989 | DE3838946A1 Multipart-coupled magnetically driven pump |
| 05/30/1989 | US4834628 Rotor-magnet unit |
| 05/30/1989 | US4834624 Pump assembly for delivering liquids and gases |
| 05/24/1989 | CN2038161U Power-driven straight-rod type multi-function oil-well pump |
| 05/24/1989 | CN2038152U Multipurpose water pump |
| 05/23/1989 | US4832838 Method and apparatus for water calculation and filtration |
| 05/18/1989 | DE3836563A1 Drive system for a coolant pump in an atomic power station |
| 05/03/1989 | EP0314659A2 A vertical submersible pump assembly |
| 05/03/1989 | EP0314658A2 A vertical submersible pump assembly |
| 05/03/1989 | DE3736188A1 Mobile, buoyant irrigation-pump installation driven by running water |
| 05/03/1989 | CN2037006U Internal cooling type swirl pump |
| 04/19/1989 | EP0201500B1 A device in fluid pressure generators |
| 04/18/1989 | US4822256 Bearing support for spherical pumps |
| 04/13/1989 | DE3730671A1 Vorrichtung zur unterseeischen foerderung von erdoel und erdgas Apparatus for subsea production of oil and natural gas |
| 04/12/1989 | CN2035812U Multipurpose multistage water pump |
| 04/12/1989 | CN2035811U Hydraulic submerged pump |
| 04/12/1989 | CN2035810U Flexible-vane pump |
| 04/11/1989 | US4820134 Loop pump |
| 04/04/1989 | US4818193 Centrifugal pump selectively mountable in centerline or inline position |
| 03/29/1989 | CN2035008U Self-cooled electric submersible pump |
| 03/29/1989 | CN2035007U Telescopic drive rod for submersible pump |
| 03/29/1989 | CN1032069A Undersea conveying apparatus of crude oil and natural gas |
| 03/22/1989 | EP0308372A1 Circulation pump, particularly for hot water systems |
| 03/22/1989 | CN2034630U Suspension submersible pump |
| 03/22/1989 | CN2034629U Automatic suction type magnetic pump |
| 03/22/1989 | CN2034628U Miniature water pump driven by bicycle |
| 03/22/1989 | CN2034627U Dual purpose water pump driven by electricity and bicycle |
| 03/16/1989 | DE3728287A1 Wet-cleaning device for hard surfaces or textile surfaces |
| 03/14/1989 | US4812108 Magnet pump |
| 03/08/1989 | EP0305776A1 Heating water circulating pump |
| 03/08/1989 | EP0305700A2 Compressor unit |
| 03/08/1989 | CN2033864U Dry type canned submersible electric pump |
| 02/28/1989 | US4808087 Canned motor pump |
| 02/22/1989 | EP0303739A2 Liquid pump, especially for tube wells |
| 02/21/1989 | US4806083 Submersible pump with expanded foam housing |
| 02/21/1989 | US4806080 Pump with shaftless impeller |
| 02/08/1989 | CN2032269U Combined well pump |
| 02/08/1989 | CN2032268U Mine submersible electric pump for explosion-proof and anti-silt |
| 02/08/1989 | CN2032192U Energy saving device for industrical sludge storage flexible shaft pump |
| 02/07/1989 | US4802819 Centrifugal pump |
| 02/07/1989 | CA1249748A1 Centrifugal blood pump with tapered seal |
| 02/02/1989 | DE3823678A1 Liquid pump having an electric drive |
| 02/01/1989 | CN2031851U Explosion-proof electric submersible pump suitable for mining sewage |
| 02/01/1989 | CN2031850U Autocontrol constant pressure tube pump with double-flow passage |
| 01/25/1989 | CN2031462U Double water-cooling and air tight submersible pump |
| 01/25/1989 | CN2031461U Energy-saving self-suction device used for pump and pump assembly |
| 01/11/1989 | CN2030664U High sucking distance mud pump |
| 01/10/1989 | US4797063 Floating suction apparatus |
| 01/04/1989 | CN2030269U Multifanctional rod type pump |
| 01/04/1989 | CN2030268U Soak-water type plastic submerged electric pump |
| 12/28/1988 | CN88212615U Flexible-shaft submerged pump |
| 12/28/1988 | CA1247518A Dewatering apparatus |
| 12/27/1988 | US4793777 Centrifugal pump with auxiliary impeller operatively associated with a primary impeller to balance the forces on the opposite sides thereof |
| 12/27/1988 | US4793766 Regenerative fuel pump having means for removing fuel vapor |
| 12/22/1988 | DE3718954A1 Propeller arrangement, in particular for ship propulsion plants |
| 12/22/1988 | DE3718425A1 Pump |
| 12/15/1988 | WO1988009874A1 Rotary pump with a coupling section |
| 12/14/1988 | CN88206389U Slide slice electric under oil pump |
| 12/14/1988 | CN87211060U Momable washing cover |
| 11/30/1988 | CN88210129U Manpower and animal-drawn pump |
| 11/30/1988 | CN88105266A Shaft-transmitted submerged pump |
| 11/23/1988 | EP0291780A1 Pump with a magnetic drive |
| 11/22/1988 | US4786239 Pumping system selectably operable as a fire pump or a hydraulic pump |
| 11/17/1988 | EP0290824A2 Magnetic pump drive |
| 11/16/1988 | CN87215252U Self-sealed fluid transporting device |
| 11/15/1988 | US4784587 Pump apparatus |
| 11/15/1988 | US4784088 Drive device for coolant pumps |
| 11/09/1988 | EP0289980A2 Submersible pump, in particular for low-boiling liquids |
| 11/09/1988 | CN87102185A Oil lubrication ball bearing shielded pump |
| 11/01/1988 | US4781527 Cartridge pump |
| 11/01/1988 | CA1243960A1 Air operated motor |
| 10/26/1988 | EP0287984A2 Improved centrifugal pump for electric household appliances such as washing machines, dishwashers and the like |
| 10/26/1988 | CN87216017U Efficient water pump |
| 10/25/1988 | US4780066 Centrifugal pump having a magnetic coupling |
| 10/19/1988 | EP0286822A2 Magnetic pump drive |
| 10/18/1988 | US4778354 Motor type fuel pump |
| 10/13/1988 | DE3809587A1 Pump unit |
| 10/12/1988 | EP0285663A1 Pump |
| 10/12/1988 | CN87210187U Mud-preventing device for axle bushes of submerged pumps |
| 10/05/1988 | CN87212643U Gasoline engine floating pump |
| 10/05/1988 | CN87209139U Electric oil-well pump for barrel |
| 10/04/1988 | US4775291 Magnetic clutch drive and thrust balancing mechanism for rotary pumps |
| 09/28/1988 | CN87216240U Soft communicating pipe deep-water pump |
| 09/27/1988 | US4773822 Pump comprising a canned motor |
| 09/21/1988 | EP0282956A2 Container pump |
| 09/21/1988 | EP0282755A1 Gap tube motor |
| 09/15/1988 | DE3744685A1 Electric motor having a connecting housing, connecting box and plug strip |
| 09/14/1988 | EP0282095A2 A multiple magnet drive pump |
| 09/14/1988 | EP0281818A1 Electric motor, in particular a gap tube motor |
| 09/14/1988 | CN87215868U Liquid pumping device without bottom valve |
| 09/14/1988 | CN87107728A Vertical unit for double row seal ring |