| 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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| 01/14/1992 | US5080127 Dosing pump system |
| 01/09/1992 | DE4120466A1 Materialaufgabebehaelter fuer zweizylinder-dickstoffpumpen Materialaufgabebehaelter for two-cylinder thick slurry pumps |
| 12/27/1991 | EP0462386A1 Dual-acting, reciprocating piston pump |
| 12/12/1991 | WO1991019094A1 Valve porting for rotating barrel ram pump |
| 12/10/1991 | US5071326 Double piston portioning apparatus |
| 12/02/1991 | CA2042891A1 High pressure piston pump for fluent materials |
| 11/26/1991 | US5067882 Dual-acting, reciprocating piston pump |
| 11/19/1991 | US5066203 Apparatus for pneumatically discharging concrete |
| 11/06/1991 | CN1055982A 驻波压缩机 Standing compressor |
| 10/29/1991 | US5061158 Multi-cylinder piston pump |
| 10/23/1991 | CN2087247U Pump for filling liquid carbon dioxide |
| 10/23/1991 | CN2087246U Loading mechanism for axial load in two direction |
| 10/22/1991 | CA1290982C Method and apparatus for conveying a liquid |
| 10/15/1991 | US5056991 Cryogas pump |
| 09/18/1991 | EP0447134A2 Standing wave compressor |
| 09/03/1991 | CA1288398C Apparatus for dosage of a condensed gas |
| 09/03/1991 | CA1288284C Compact twin piston pump |
| 08/06/1991 | US5037275 Pipe junction switch for two-cylinder thick-material pump |
| 07/24/1991 | EP0438084A1 Concrete pump for wet spraying |
| 07/24/1991 | EP0437440A1 Thick-matter pump with downstream shut-off device. |
| 07/18/1991 | DE4002760A1 Concrete pump for wet spray process - has control to ensure adequate supply of compressed air |
| 07/17/1991 | CN2080998U Integrally fast mounting wearproof piston for slurry pump |
| 07/17/1991 | CN2080933U Automatic device for sucking and conveying material |
| 07/10/1991 | EP0380576A4 Compact twin piston pump |
| 07/09/1991 | US5030069 Material moving pump |
| 06/18/1991 | US5024584 Pump unit with adjustable piston stroke length |
| 06/13/1991 | WO1991008445A1 Flowmetering apparatus |
| 06/13/1991 | CA2069624A1 Flowmetering apparatus |
| 05/29/1991 | CN2077912U Bellows pump |
| 05/22/1991 | EP0427988A1 Membrane pump |
| 05/15/1991 | CN2077041U 柱塞泵 Piston |
| 05/08/1991 | CN1051230A Rubber piston for reciprocating pump and manufacturing method thereof |
| 05/07/1991 | US5013219 Positive displacement piston pump |
| 04/17/1991 | EP0422745A1 Concrete-pumping device |
| 04/03/1991 | EP0419695A1 Slurry pumping apparatus |
| 03/27/1991 | CN1012199B Waveform actuating air compressor |
| 03/21/1991 | WO1991003645A1 Primer valve for chop-check pump |
| 03/19/1991 | CA1281593C Frail material slurry pump |
| 03/19/1991 | CA1281592C Device for transporting suspensions of dense materials and a process for its operation |
| 03/06/1991 | CN2072606U Oil and water double separating pump |
| 02/20/1991 | CN1049398A Volumetric pump and process for pumping volumetrically |
| 02/06/1991 | EP0410972A1 Material-feeding containers for thick-matter pumps. |
| 01/30/1991 | EP0410394A1 Internally pressurized bellows pump |
| 01/26/1991 | CA2021810A1 Internally pressurized bellows pump |
| 01/24/1991 | DE4019594A1 Pump for oil industry has chamber with flexible bags - and can pump mixt. contg. gases, liq. hydrocarbon(s) and solid particles without problems affecting rotary pumps |
| 01/22/1991 | US4987013 Process for lining pipe |
| 01/16/1991 | EP0408083A1 Aggressive liquids dosage membrane pump |
| 01/16/1991 | EP0408051A1 Method and device for the transport of fluid or pasty materials |
| 01/01/1991 | US4981418 Internally pressurized bellows pump |
| 12/26/1990 | CN1010966B Piston of mud pump made up of polyurethane |
| 12/19/1990 | EP0402390A1 Control arrangement for two-cylinder pumps for viscous liquids. |
| 12/19/1990 | CN1010871B Radial piston pump for conveying water |
| 12/18/1990 | US4978283 Primer valve for chop-check pump |
| 12/05/1990 | EP0400496A1 Volumetric pump and method for volumetric pumping |
| 11/28/1990 | EP0399771A1 Residue recovery system |
| 11/22/1990 | CA2016991A1 Residue recovery system |
| 11/14/1990 | CN2065685U Roll pump for ceramic sprayed coating |
| 11/06/1990 | CA1275985C Apparatus for displacing high viscous substances |
| 10/31/1990 | DE4012350A1 Pump for delivery of liq. concrete - has arrangement of membranes in hollow ball working chambers |
| 10/16/1990 | US4963077 Profiled plunger for a reciprocating pump |
| 10/10/1990 | EP0205569B1 Mud pump |
| 10/04/1990 | WO1990011449A1 Control arrangement for a two-cylinder pump for thick materials |
| 10/03/1990 | EP0389785A2 Two-cylinder-slurrypump with piston-accumulator |
| 10/03/1990 | CN2063173U Two-valve downstream pipeline pump |
| 09/29/1990 | CA2013356A1 Two cylinder solids handling pump with piston reservoir |
| 09/19/1990 | EP0388199A2 Dosing pump system |
| 09/18/1990 | CA1274222A1 Pumping unit for the filling of container in packaging machines |
| 09/18/1990 | CA1274119A1 Squeeze pump |
| 08/09/1990 | WO1990008897A1 Hydraulic piston pump for the compression of multiphase fluid |
| 08/08/1990 | EP0380777A1 Positive-displacement pump for pumping alimentary liquids |
| 08/08/1990 | EP0380576A1 Compact twin piston pump |
| 08/01/1990 | CN1009022B 挤压泵 Extrusion pump |
| 08/01/1990 | CN1009021B Squeeze pump |
| 06/13/1990 | CN1008387B Control valve for viscous material pump |
| 06/12/1990 | US4932847 Apparatus for transmitting pressure from a hydraulic fluid to a material having solid particles suspended in a liquid medium |
| 06/05/1990 | US4932005 Fluid means for data transmission |
| 05/16/1990 | CN2057226U Corrosion resisting plunger metering pump |
| 04/25/1990 | EP0364823A1 Device for pneumatically dispensing concrete hydromechanically transported in a dense flow |
| 04/25/1990 | EP0364519A1 Multi-cylinder piston pump |
| 04/19/1990 | WO1990004104A1 Process and device for correcting the piston stroke in the cylinders of a two-cylinder pump for thick matter |
| 04/19/1990 | WO1990004103A1 Thick-matter pump with downstream shut-off device |
| 04/19/1990 | DE3834678A1 Verfahren und vorrichtung zur korrektur des kolbenhubs in den zylindern einer zweizylinder-dickstoffpumpe Method and device for correction of the piston stroke in the cylinders of a two-cylinder thick fuel pump |
| 04/19/1990 | DE3834451A1 Thick matter pump |
| 04/18/1990 | CA2000952A1 An apparatus for pneumatically discharging concrete |
| 04/17/1990 | US4917576 Method and apparatus for conveying a liquid |
| 04/10/1990 | US4915602 Pump for pumping a fluid comprising a liquified gas |
| 04/03/1990 | US4913628 Radial piston pump for pumping water |
| 04/03/1990 | US4913089 Pump for a viscous slurry |
| 03/21/1990 | CN2054840U Manpower suction type high-lift porcelain pump |
| 03/21/1990 | CN1040660A Polyurethane piston of slurry pump |
| 02/21/1990 | CN1006927B Vertically outside installed underliquid pump |
| 02/20/1990 | CA1265955A1 Pumping systems |
| 02/14/1990 | EP0354883A1 Pumping device for particularly abrasive slurries |
| 02/08/1990 | WO1990001117A1 Pipe shunt for a two-cylinder pump for viscous fluids |
| 01/25/1990 | DE3824466A1 Mehrzylinder-dickstoffpumpe Multi-cylinder thick fuel pump |
| 01/16/1990 | US4893992 Two-cylinder thick-material pump |
| 12/20/1989 | CN1006174B Computer controlled metering pump |
| 12/14/1989 | WO1989012166A1 Multichamber pump, valve for such a pump and use of the pump |
| 12/14/1989 | WO1989011038A3 Piston pump for multiphase fluids and applications thereof |
| 12/06/1989 | EP0345210A1 Multichambers pump, valve for such a pump and use of it |