| Patents for F04B 19 - Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups (2,867) |
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| 09/19/1993 | CA2090915A1 Pumping apparatus |
| 09/01/1993 | EP0557316A1 A method in a radial piston eccentric motor/pump and a corresponding radial piston eccentric motor/pump |
| 08/25/1993 | EP0556622A1 Micro-pump and method for production thereof |
| 08/18/1993 | EP0555273A1 A two-stage pump for a continuous ink jet printer. |
| 08/11/1993 | EP0554740A1 Pump with filtering device |
| 08/03/1993 | US5232051 Oil recovery apparatus |
| 07/29/1993 | DE4239202A1 Valveless pump or compressor - has control journal with rotating body moving over inlet and outlet passages |
| 07/28/1993 | EP0464165B1 Ultrahigh pressure plunger pump |
| 07/20/1993 | US5228840 Positive displacement pumps |
| 07/20/1993 | US5228291 Motor with rotating mass induced vibration driving means |
| 07/16/1993 | CA2064256A1 Pressure washer with pressure bypass |
| 07/07/1993 | CN1074016A Entrainment pump for viscous fluids, particularly suitable for lubricating dobbles and looms |
| 06/22/1993 | US5221195 Pressure testing pump |
| 05/27/1993 | WO1993010353A1 Piston machine for use as a compressor or motor |
| 05/26/1993 | CN2134504Y Automatic pressr |
| 05/12/1993 | EP0540915A1 Fine pressure control system for high pressure gas |
| 05/05/1993 | CN2132002Y Water-steam recycling pump for steam boilers |
| 04/14/1993 | CN2129834Y Two purpose device for hand vehicle oil pump and tyre inflation machine |
| 04/07/1993 | EP0535726A1 Entrainment pump for viscous fluids, particularly suitable for lubricating dobbies and looms |
| 02/17/1993 | CN1069105A Sungle-cylinder, double-action type hydraulic slurry pump |
| 01/14/1993 | DE4120846A1 Equipment for pretreatment of strongly contaminated water - involves worm pump delivering water from input to a higher located duct and having extension in which the worm works |
| 12/30/1992 | CN1067482A Multipurpose pump for aeration and liquid suction |
| 12/24/1992 | DE4120153A1 System for drawing liquids - has belt which polls equidistant carriers up through open ended delivery pipe, around drive wheel to discharge pipe |
| 11/25/1992 | EP0514922A1 Portable heat conducting apparatus |
| 11/12/1992 | WO1992016750A3 Flexible conveyor assembly and conveying apparatus and method for lifting fluid |
| 10/20/1992 | US5156537 Multiphase fluid mass transfer pump |
| 10/07/1992 | CN1065120A Flexible conveyor assembly and conveying apparatus and method for lifting fluid |
| 10/01/1992 | WO1992016750A2 Flexible conveyor assembly and conveying apparatus and method for lifting fluid |
| 10/01/1992 | WO1992016721A1 A kinematic motion assembly with reciprocating relative motion |
| 10/01/1992 | DE4110022A1 Double-acting cylinder piston stirring mechanism pump - is controllable via seat valve rings and has lever-type stirring mechanism for mixing aspirating and pressing |
| 09/15/1992 | US5147189 Pressure pump with sealing sleeve between head and chamber |
| 08/26/1992 | CN2114042U Jack capable of being used as a tyre pump |
| 08/04/1992 | US5135286 Residue recovery process and apparatus |
| 07/23/1992 | WO1992012344A1 Positive displacement pumps |
| 07/14/1992 | US5129788 Heat-driven pump |
| 06/24/1992 | CN1062193A Seal, coreless and prossure method and device of suction and exhaust machinery |
| 06/11/1992 | DE4139134A1 Hydrodynamic screw for energy conversion - uses changes in water supply to regulate energy output |
| 06/02/1992 | US5118265 Liquid pump assembly |
| 06/02/1992 | US5118251 Compound turbomolecular vacuum pump having two rotary shafts and delivering to atmospheric pressure |
| 05/29/1992 | WO1992008892A1 A method in a radial piston eccentric motor/pump and a corresponding radial piston eccentric motor/pump |
| 05/26/1992 | CA1301544C Loop pump |
| 05/19/1992 | US5114321 Fluid displacement apparatus with traveling chambers |
| 05/19/1992 | US5113808 Double piston engine |
| 05/14/1992 | WO1992008052A1 A two-stage pump for a continuous ink jet printer |
| 04/15/1992 | CN2101779U Wiredrawing pump |
| 04/01/1992 | EP0475947A4 Internal combustion engine |
| 03/26/1992 | DE4029751A1 Piston pump for viscous liq. - has round disc rotatably mounted in housings, with diagonal cylinder bore in disc |
| 03/25/1992 | EP0476367A1 Hydraulic piston pump |
| 03/25/1992 | EP0475947A1 Internal combustion engine |
| 03/24/1992 | CA1297729C Pump |
| 03/18/1992 | EP0475701A1 Heat-driven pump |
| 02/20/1992 | WO1992002730A1 Free-piston engine |
| 02/11/1992 | CA1295511C Apparatus for transferring fluid medium |
| 02/06/1992 | DE4024591A1 Freikolbenmotor Free-piston engine |
| 01/14/1992 | US5080196 Lubricating system and pump |
| 01/08/1992 | EP0464165A1 Ultrahigh pressure plunger pump. |
| 12/17/1991 | US5073082 Hydraulic screw pump |
| 11/27/1991 | CN2089536U Micro impeller pipe pump |
| 09/17/1991 | US5048670 Flexible conveyor assembly and conveying apparatus and method for lifting fluid |
| 09/03/1991 | US5044900 Positive displacement shuttle pump |
| 07/25/1991 | WO1991010830A1 Ultrahigh pressure plunger pump |
| 07/03/1991 | EP0435291A1 Combined turbomolecular vacuum pump with two shafts and discharge at atmospheric pressure |
| 05/08/1991 | CA2002475A1 Magnetic pump |
| 04/10/1991 | EP0421807A1 Lubricating system and pump |
| 02/10/1991 | CA2022751A1 Dual auger top loading pumping system for manure tank wagon |
| 02/05/1991 | US4990062 Positive displacement pumps |
| 01/31/1991 | DE4001335C1 High-pressure plunger pump - incorporates adjustable sleeve and disc-types inlet valve |
| 01/15/1991 | CA1278953C Pump |
| 12/19/1990 | CN1047907A Ic engine |
| 12/13/1990 | WO1990015230A1 Internal combustion engine |
| 11/28/1990 | EP0399771A1 Residue recovery system |
| 11/22/1990 | DE4010216A1 Electrohydraulic impulse piston pump - makes use of spark discharge in dielectric fluid |
| 11/22/1990 | CA2016991A1 Residue recovery system |
| 11/20/1990 | US4971532 Oil metering pump with air purge |
| 11/20/1990 | US4971526 Dual auger top loading pumping system for manure tank wagon |
| 11/06/1990 | CA1275985C Apparatus for displacing high viscous substances |
| 10/24/1990 | EP0393564A1 Hydraulic screw pump with true sized gap sealing |
| 10/16/1990 | US4962847 Liquid lift |
| 10/09/1990 | US4961694 Lever arm pump |
| 09/18/1990 | US4957419 Compressor |
| 09/04/1990 | US4954048 Process and device for conveying boilable liquids |
| 08/15/1990 | CN1009216B Loop pump |
| 07/18/1990 | EP0277131B1 Loop pump |
| 07/11/1990 | CN2059187U Foot drainage pump |
| 05/16/1990 | CN2057228U Oil-pumping plunger with multiple filled soft seal |
| 04/17/1990 | US4917575 Liquid chromatographic pump |
| 03/29/1990 | DE3927963A1 Rotary piston pump and motor - has ball bearings which engage inclined groove in piston |
| 03/27/1990 | US4910964 Liquid cryogenic transfer system |
| 02/20/1990 | US4902208 Pump having piston and cylinder rotatable respectively about spaced axes transverse to the reciprocating axis |
| 02/06/1990 | US4898129 Valve control of internal combustion engines by means of a cam-driven rotary piston pump |
| 12/27/1989 | CN1038336A Internal-extrusion type single-screw pump |
| 12/20/1989 | CN2049693U Oil pump with elastic piston ring |
| 10/31/1989 | US4876946 Flexible hose pump |
| 08/10/1989 | DE3802545A1 Micropump for delivering extremely small amounts of gas |
| 07/05/1989 | EP0322596A1 Method and device for transporting fluids about to boil |
| 05/16/1989 | US4830585 Pumping system |
| 04/18/1989 | US4822254 Oscillating cylinder pumping arrangement |
| 04/11/1989 | US4820134 Loop pump |
| 03/29/1989 | CN2035004U Oiling machine |
| 03/22/1989 | EP0307637A1 Valve control for an internal-combustion engine by means of an offset-driven rotary-piston pump |