| 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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| 09/15/1993 | CN1022125C Volumetric pump |
| 09/09/1993 | DE4206576A1 Verfahren und anordnung zur bestimmung der foerdermenge oder des foerderstroms von mittels einer kolbendickstoffpumpe transportiertem foerdergut Method and arrangement for determining the delivery or the foerderstroms transported by means of a piston pump Pumped thick material |
| 09/07/1993 | US5242403 Pumping device for the metered feed of liquids |
| 09/03/1993 | CA2130437A1 Process for measuring the flow rate of thick matter pumps |
| 09/02/1993 | WO1993016829A1 Pump apparatus for pumping melt metal |
| 09/01/1993 | EP0465474B1 Control arrangement for a two-cylinder pump for thick materials |
| 09/01/1993 | CN2141470Y Long distance moving piston mud pump |
| 08/26/1993 | DE4205154A1 Pump head for hot gas etc. pump - has covered chambers, contg. e.g. screw connections for pipes extending from heating jacket |
| 08/25/1993 | EP0556785A1 Device for pneumatically discharging of hydromechanically in compact flow transported concrete |
| 08/24/1993 | US5238371 Control arrangement for a two-cylinder pump for thick materials |
| 08/21/1993 | CA2089979A1 Device for the pneumatic discharge of concrete that is hydromechanically transported in a dense flow |
| 08/19/1993 | DE4204332A1 Mobile peristaltic concrete pump - tilts sideways on chassis to accommodate distribution boom alongside outlet when folded for transport |
| 06/29/1993 | US5222875 Variable speed hydraulic pump system for liquid trailer |
| 06/17/1993 | DE4237890C1 Wear part useful in machine building - has coating of hard substances on sealing surface sliding on another surface |
| 06/15/1993 | US5219455 Pump for ice-cream machines |
| 06/09/1993 | DE4239420A1 Piston fluid pump - has two chambers divided by movable wall allowing variable compressed volumes in both chambers |
| 06/01/1993 | US5214925 Use of liquified compressed gases as a refrigerant to suppress cavitation and compressibility when pumping liquified compressed gases |
| 05/26/1993 | EP0543471A2 Apparatus and method for supercritical fluid extraction |
| 05/26/1993 | CN2134502Y Pump valve of drilling mud pump |
| 05/25/1993 | US5213478 Slurry pumping method and apparatus |
| 05/19/1993 | CN1072245A Assemblage of plunger pump with reducing and separating oil leakage |
| 05/12/1993 | EP0540944A1 Metering pump for viscous products |
| 05/11/1993 | US5209649 Control system for a two-cylinder thick matter pump |
| 03/31/1993 | CN2128974Y Deliver pump for ice cream freezing machine |
| 03/30/1993 | US5198197 Apparatus and method for supercritical fluid extraction |
| 03/23/1993 | US5195878 Air-operated high-temperature corrosive liquid pump |
| 03/16/1993 | US5193991 Liquefied carbon dioxide pump |
| 03/04/1993 | WO1993004282A1 Hydraulic control device for a viscous fluid pump |
| 03/04/1993 | CA2115845A1 A hydraulic control device for a viscous fluid pump |
| 03/03/1993 | EP0529393A1 Dosing pump |
| 03/03/1993 | EP0529334A2 Liquid delivery and vaporization system |
| 03/02/1993 | US5190449 Material feed tank for sludge pumps |
| 02/28/1993 | CA2076062A1 Method and device for dosing pumping |
| 02/18/1993 | DE4127277A1 Hydraulische steuerungseinrichtung fuer eine dickstoffpumpe Hydraulic control device for a thick fuel pump |
| 02/17/1993 | CN1069105A Sungle-cylinder, double-action type hydraulic slurry pump |
| 02/17/1993 | CN1069104A Concrete pump |
| 02/17/1993 | CN1069005A Device for opening and closing gate case of concrete pump |
| 02/04/1993 | WO1993002288A1 Material feed container for thick substance pumps |
| 02/04/1993 | DE4224525A1 Pump for high-pressure delivery of concrete - incorporates cover in hopper return used to improve suction |
| 02/04/1993 | DE4211850A1 Gate-house opening and closing for concrete pump - has gate-house swivel opened by operation of single bolt and hydraulic control |
| 02/03/1993 | EP0525329A2 Variable speed hydraulic pump system for liquid trailer |
| 01/26/1993 | US5181833 Portable pump system |
| 01/21/1993 | DE4124220A1 Materialaufgabebehaelter fuer dickstoffpumpen Materialaufgabebehaelter for thick slurry pumps |
| 01/20/1993 | EP0437440B1 Thick-matter pump with downstream shut-off device |
| 12/29/1992 | US5174732 Viscous fluid pressure-feed apparatus |
| 12/29/1992 | US5174130 Refrigeration system having standing wave compressor |
| 12/24/1992 | DE4120587A1 Delivery and controlled feed device for rapidly sedimenting abrading material - comprises storage container, piping system, pump, valves and take-off point |
| 12/23/1992 | CN2125728U Flow antomatic and mannal adjusting valve for centrifugal pump |
| 12/22/1992 | US5173188 Automated extractions |
| 12/15/1992 | CA2044697A1 Molten metal pump with filter |
| 12/01/1992 | US5167837 Filtering and dispensing system with independently activated pumps in series |
| 11/19/1992 | DE4215403A1 Double piston pump for spraying wet concrete or mortar - uses alternating pistons with changeover link to pump material and sensors to detect end of stroke |
| 11/18/1992 | CN2122242U Boring pump piston having water power protection |
| 11/10/1992 | US5161954 De-sludging systems |
| 11/03/1992 | US5160624 Automatic injection; high pressure vessel; high speed |
| 10/21/1992 | EP0509185A1 Feeding device for reciprocating piston pumps for liquids under saturation conditions |
| 10/21/1992 | EP0410972B1 Material-feeding containers for thick-matter pumps |
| 10/07/1992 | EP0425567B1 Pipe shunt for a two-cylinder pump for viscous fluids |
| 09/23/1992 | EP0504178A1 Flowmetering apparatus. |
| 09/17/1992 | DE4107846A1 Liquid gas pump for use with cryogenic hydrogen@ in vehicle - is acted on by pressure from nitrogen@ reservoir behind compression piston |
| 09/15/1992 | US5147188 Priming piston pump piston check valve |
| 09/09/1992 | EP0502360A1 Pump for ice-cream machines |
| 09/02/1992 | EP0501806A1 Liquefied carbon dioxide pump |
| 08/25/1992 | US5141414 Piston pump for easily damaged products |
| 08/25/1992 | US5141408 Product pumping apparatus |
| 08/12/1992 | EP0498009A1 Viscous fluid pressure-feed apparatus |
| 08/05/1992 | CN1063338A Rolling piston compressor made of engineering ceramics |
| 08/04/1992 | US5135286 Residue recovery process and apparatus |
| 07/21/1992 | US5132014 Pressure vessel; cartridge with sealing plug |
| 07/07/1992 | US5127806 Thick matter pump with downstream shutoff device |
| 06/16/1992 | CA1303458C Apparatus and method for flow control |
| 06/03/1992 | EP0402390B1 Control arrangement for two-cylinder pumps for viscous liquids |
| 06/02/1992 | CA1302162C2 Compact twin piston pump |
| 05/26/1992 | CA1301546C2 Compact twin piston pump |
| 05/26/1992 | CA1301545C2 Compact twin piston pump |
| 05/20/1992 | EP0485862A1 Slurry pump having a pair of alternatively sucking and delivering cylinders |
| 05/19/1992 | US5114319 Concrete-pumping device |
| 05/14/1992 | DE4035518A1 Vol flow measuring method for pumped feed - using detected pressure character along feed line to determine feed pump parameters |
| 05/05/1992 | US5110267 Positive-displacement pump for pumping alimentary liquids |
| 04/30/1992 | WO1992007190A1 Double piston portioning apparatus |
| 04/28/1992 | US5108270 Conductive plastic fluid handling equipment |
| 04/28/1992 | CA1299442C Pump for high viscosity substances |
| 04/21/1992 | US5106272 Sludge flow measuring system |
| 04/14/1992 | US5104299 Electromagnetic reciprocating pump |
| 04/08/1992 | CN1016207B Rubber piston for reciprocating pump and manufacturing method thereof |
| 04/01/1992 | CN2100507U Glass-lined ringless acid-resisting pump |
| 03/19/1992 | WO1992004543A1 A displacement pump as well as a pump assembly comprising two displacement pumps |
| 03/10/1992 | US5094753 Disposable extraction cartridge |
| 03/10/1992 | US5094596 High pressure piston pump for fluent materials |
| 03/04/1992 | CN1059188A Piston type pump made from industrial ceramics |
| 01/30/1992 | DE4124290A1 Pumping for hot erosive sludges - has diaphragm pump in vertical pipe and heat exchanging medium around it |
| 01/29/1992 | EP0468808A1 Conductive plastic fluid handling equipment |
| 01/28/1992 | CA2047057A1 Conductive plastic fluid handling equipment |
| 01/25/1992 | CA2047055A1 Pump system |
| 01/23/1992 | WO1992001159A1 Feeding reservoir for thick matter, two-cylinder pump |
| 01/23/1992 | WO1992001158A1 Device for conveying dense substances |
| 01/21/1992 | CA1294668C Electromagnetic pump |
| 01/16/1992 | DE4104693A1 Vorrichtung zur foerderung von dickstoffen Apparatus for foerderung of thick materials |
| 01/15/1992 | EP0466291A2 Apparatus and method for supercritical fluid extraction |
| 01/15/1992 | EP0465474A1 Control arrangement for a two-cylinder pump for thick materials. |