| Patents for F04B 15 - Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts (3,388) |
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| 12/05/1989 | US4884594 Compact twin piston pump |
| 11/29/1989 | CN2048522U 万能泵 Universal Pump |
| 11/16/1989 | WO1989011038A2 Piston pump for multiphase fluids and applications thereof |
| 11/16/1989 | WO1989011037A1 Control arangement for two-cylinder pumps for viscous liquids |
| 11/14/1989 | US4880365 Cement pump with removable discharge chamber cartridge |
| 11/02/1989 | WO1989010486A1 Material-feeding containers for thick-matter pumps |
| 10/25/1989 | CN1036619A 挤压泵 Extrusion pump |
| 10/24/1989 | US4875833 Pumping of high viscosity materials |
| 10/05/1989 | WO1989009339A1 Multi-cylinder piston pump |
| 10/04/1989 | CN1036065A 挤压泵 Extrusion pump |
| 09/26/1989 | US4869655 Compact twin piston pump |
| 09/26/1989 | US4869653 Compact twin piston pump |
| 09/26/1989 | CA1260759A1 Bi-phased fluid pump feeder device, and hydrocarbon production installation using said device |
| 09/05/1989 | US4862696 Apparatus for dosage of a condensed gas |
| 08/01/1989 | US4852467 Spool valve for concrete pumps |
| 07/18/1989 | CA1257630A1 Evacuated pumping system |
| 07/06/1989 | DE3742938A1 Piston pump and method for controlling it |
| 06/22/1989 | DE3741968A1 Metering pump |
| 06/20/1989 | CA1255966A1 Mud pump |
| 06/20/1989 | CA1255961A1 Compound pump mechanism for meat encasing machines and the like |
| 06/07/1989 | EP0319093A1 Pump unit |
| 05/31/1989 | EP0317716A2 Suction and force plunger pump |
| 05/23/1989 | US4832582 Electric diaphragm pump with valve holding structure |
| 05/17/1989 | EP0315750A1 Pump for viscous material |
| 05/10/1989 | EP0314701A1 An apparatus for dosage of a condensed gas |
| 05/03/1989 | CN1004093B Sealing device for concrete pump |
| 04/20/1989 | WO1989003479A1 Compact twin piston pump |
| 04/04/1989 | US4818191 Double-acting diaphragm pump system |
| 03/21/1989 | US4813342 Cryogenic pump multi-part piston with thermal expansivity compensated polytetrafluoroethylene seal rings |
| 02/21/1989 | CA1250219A1 Pump for cryogenic fluids |
| 02/21/1989 | CA1250183A1 Reciprocating pump |
| 02/15/1989 | EP0303376A2 Frail material slurry pump |
| 02/14/1989 | CA1249983A1 HIGH PRESSURE RECIPROCATING MOTION COMPRESSOR AND USE THEREOF FOR THE POLYMERIZATION OF ETHYLENE AND .alpha.-OLEFINS |
| 01/25/1989 | CN2031454U Binding magnetism-driven pump. |
| 01/18/1989 | CN1030464A Radial piston pump for conveying water |
| 01/04/1989 | EP0297281A1 Two-cylinder pump for viscous material |
| 12/20/1988 | US4792289 Reciprocating pump for cryogenic fluids |
| 12/13/1988 | US4790728 Dual-rigid-hollow-stem actuators in opposite-phase slurry pump drive having variable pumping speed and force |
| 12/13/1988 | CA1246389A1 Two-cylinder viscous liquid pump with pipe switch |
| 12/07/1988 | EP0294322A2 Pump for fluid including liquified gas |
| 11/09/1988 | CN88210147U Wear-resisting hydraulic pump without leakage |
| 11/02/1988 | CN87102727A Computer controlled metering pump |
| 11/01/1988 | US4781544 Apparatus for transmitting pressure from a hydraulic fluid to a material having solid particles suspended in a liquid medium |
| 10/25/1988 | CA1243546A1 Leakage preventing liquid supply pump |
| 10/18/1988 | US4778347 High production pump for viscous materials and method |
| 10/12/1988 | EP0286404A2 Electric pump |
| 10/12/1988 | CN87212680U Full-sealed double-cavity corrosion-resisting diaphragm pump |
| 10/12/1988 | CN87208514U Spray-following and self-sealed adjustable piston |
| 10/11/1988 | US4776767 Electromagnetic pump |
| 10/11/1988 | CA1242930A1 Pump and system employing said pump |
| 09/20/1988 | US4772184 Piston pump for abrasive conveyances |
| 09/13/1988 | US4770610 Frail material slurry pump |
| 09/07/1988 | CN87204919U Long service life piston of drilling mud pump |
| 08/17/1988 | CN87203463U Oil serous separat or for oil separating pump |
| 08/03/1988 | CN87100216A Vertically outside installed underliquid pump |
| 07/26/1988 | USRE32719 Multi-way valves for pumps for conveying heavy flowable materials |
| 07/26/1988 | US4759695 Pumping unit for the filling of container in packaging machines |
| 07/19/1988 | US4758131 Apparatus for displacing high viscous substances |
| 06/28/1988 | US4753578 Abrasive fluid pumping apparatus |
| 06/15/1988 | CN87201944U Combined sealing syringe emery pump |
| 06/08/1988 | CN87202090U Air chamber aerator for drilling well slurry pump |
| 05/17/1988 | US4744735 Parallel-cylinder, angled-valve fluid pump |
| 04/26/1988 | USRE32657 Two-cylinder pump for heavy flowable materials, such as concrete |
| 04/20/1988 | EP0263899A1 Evacuated pumping system |
| 04/05/1988 | US4735557 Pump for conveying a viscous medium |
| 04/05/1988 | US4735553 Straight peristaltic pump for conveying concrete or the like |
| 03/23/1988 | EP0260925A1 Dispenser guns |
| 03/23/1988 | EP0187735B1 Displacement pump |
| 02/23/1988 | CA1233070A1 Oscillating-deflector pump |
| 01/28/1988 | WO1988000687A1 An apparatus for dosage of a condensed gas |
| 01/20/1988 | EP0253122A2 Pistonpump for cryogenic liquids |
| 01/19/1988 | US4720248 Thermal barrier for submersible pump and motor assemblies |
| 01/13/1988 | EP0252296A2 Piston pump for delivering cryogenic liquid |
| 01/12/1988 | US4718826 Mobile pumping apparatus for abrasive slurries |
| 01/05/1988 | US4717317 Reciprocating pump |
| 12/23/1987 | EP0249900A2 Pumping and dispersing device for high-viscosity liquids such as mortars for plastering |
| 11/04/1987 | EP0174309B1 A pump for pumping corrosive fluids |
| 10/28/1987 | CN86210664U Vertical water-isolation mud pump |
| 10/27/1987 | US4702887 Nickel, molybdenum, bismuth, tin, antimony |
| 10/21/1987 | EP0242145A2 Apparatus for displacing high viscous substances |
| 09/23/1987 | EP0238380A1 Pumping of high viscosity materials |
| 09/22/1987 | US4694536 Compound pump mechanism for meat encasing machines and the like |
| 09/09/1987 | CN86204120U Submerged pump made of fluoroplastics |
| 09/02/1987 | EP0138927B1 Piston pump for liquid media contaminated by solid materials |
| 09/01/1987 | US4690160 Hydraulically operated high-pressure piston pump |
| 08/27/1987 | DE3605723A1 Method and device for conveying solid/liquid mixtures |
| 08/19/1987 | CN86103131A Squeeze pump |
| 07/22/1987 | EP0229304A1 Pumping unit for the filling of containers in packaging machines |
| 07/21/1987 | US4681516 Leakage preventing liquid supply pump |
| 07/21/1987 | US4681242 Solvent pump |
| 07/21/1987 | US4681022 Two-cylinder viscous liquid pump with pipe switch |
| 07/14/1987 | US4679989 Pump shovel bulk unloader |
| 07/14/1987 | CA1224082A1 Constant-flow-rate dual-unit pump |
| 06/30/1987 | US4676724 Mud pump |
| 06/25/1987 | DE3545262A1 Appliance for reciprocating-oil equalisation in a concrete pump |
| 06/19/1987 | DE3544368A1 Pressure damper |
| 06/17/1987 | CN85201850U Bushless boronized barrel of oil-pump |
| 06/11/1987 | DE3542848A1 Heatable pump for viscous media, in particular adhesive |
| 05/27/1987 | CN86207118U Viscous material pump |
| 05/26/1987 | CA1222144A1 Apparatus for conveying liquids |