| Patents for F04C 11 - Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations (1,800) |
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| 04/29/1986 | US4585401 Multistage helical down-hole machine with frictional coupling of working elements, and method therefor |
| 04/23/1986 | EP0178782A1 Tandem pump assembly |
| 04/08/1986 | US4580955 Eccentric screw pump for the conveying of liquids from bore holes |
| 02/05/1986 | EP0170039A1 Equipment for handling non-homogeneous fluids, e.g. a sludge |
| 12/27/1985 | EP0165884A1 Hydraulic high-pressure producer or receiver for the transmission of power |
| 11/19/1985 | US4553512 Fluid pump assembly |
| 11/12/1985 | US4552512 Standby water-powered basement sump pump |
| 11/05/1985 | US4551079 Rotary vane pump with two axially spaced sets of vanes |
| 10/22/1985 | US4548557 Hydraulic pump or motor with interchangeable gears |
| 10/15/1985 | US4547135 Motor-pump unit |
| 09/25/1985 | EP0155544A2 Apparatus for the transport of flowable materials |
| 09/10/1985 | US4540354 Rotary fuel pump |
| 09/03/1985 | US4538966 Oil pump assembly |
| 07/30/1985 | US4531535 Flow divider |
| 06/25/1985 | US4525126 Electro-hydraulic unit for steering, braking, suspension and like devices for vehicles |
| 05/08/1985 | EP0140506A2 Combined power steering pump and vacuum pump assembly |
| 04/23/1985 | US4512728 Combined rotary pump and compressor unit |
| 04/16/1985 | US4511378 Liquid-gas contacting apparatus and pump therefor |
| 02/19/1985 | US4500270 Gear rotor fuel pump |
| 02/05/1985 | US4497618 Combined vacuum pump and power steering pump assembly |
| 11/27/1984 | US4484863 Rotary vane pump with undervane pumping and an auxiliary outlet |
| 11/06/1984 | US4480967 Motor-driven pump unit for a high-pressure cleaning apparatus |
| 10/03/1984 | EP0120058A1 Double vane pump |
| 09/25/1984 | US4473341 Balanced vane oil pumps |
| 09/05/1984 | EP0117720A2 A gear pump |
| 05/22/1984 | CA1167655A1 Oil cooling apparatus for refrigeration screw compressor |
| 05/01/1984 | US4445820 Electrically powered pump |
| 04/12/1984 | WO1984001408A1 Double vane pump |
| 03/27/1984 | US4439109 Pump for pumping a liquid containing solid contaminants |
| 03/20/1984 | US4437821 Shaft seal for pump means |
| 03/13/1984 | CA1163500A1 Self-contained rotary fuel pump |
| 01/10/1984 | CA1160113A1 Electrically operated fuel pump suitable for use in injection systems for controlled ignition internal combustion engines |
| 12/28/1983 | EP0097138A2 A hydraulic pump or hydraulic motor |
| 12/13/1983 | US4419865 Oil cooling apparatus for refrigeration screw compressor |
| 11/15/1983 | US4415319 Pump unit |
| 11/01/1983 | US4412789 Oil pump unit |
| 10/12/1983 | EP0091347A1 Multiple-gear pump |
| 09/14/1983 | EP0088674A1 Electrohydraulic apparatus for steering systems, in particular for vehicles |
| 08/30/1983 | US4401416 Self-contained rotary fuel pump |
| 08/16/1983 | CA1151949A1 Hydraulic pressure producing system for hydraulic press |
| 08/02/1983 | US4396358 Electric fuel pump for use in the fuel injection system or a spark-ignition internal combustion engine |
| 07/27/1983 | EP0084240A2 Close-coupled unitized power system assembly |
| 07/13/1983 | EP0020354B1 Manifolded multiple hydraulic pump structure |
| 06/22/1983 | EP0081659A1 Pump unit driven by an electric motor |
| 06/07/1983 | US4386654 Hydraulically operated downhole oil well pump |
| 04/19/1983 | US4380272 Oil reservoir particularly for hydraulic steering system |
| 04/05/1983 | CA1144020A1 Apparatus for delivering varying quantities of a fluid |
| 01/26/1983 | EP0070555A2 Apparatus for supplying vehicles with liquid, especially cryogenic fuels |
| 01/12/1983 | EP0069604A1 Hydraulic pumps or motors with helicoidal gears (screw turbines) |
| 01/11/1983 | CA1139361A1 Control system for polyphase loads |
| 12/28/1982 | US4365941 Scroll compressor provided with means for pressing an orbiting scroll member against a stationary scroll member and self-cooling means |
| 12/21/1982 | CA1137814A1 Pump |
| 12/07/1982 | US4362480 Rotary roller vane pump made of specific materials |
| 10/19/1982 | US4354809 Fixed displacement vane pump with undervane pumping |
| 08/31/1982 | US4347047 Hydraulic pump for power steering |
| 08/17/1982 | CA1129833A1 Liquid ring pump |
| 07/13/1982 | CA1127458A1 Coaxial pump and motor |
| 05/11/1982 | US4328824 Flow divider with plural metering gears, unrestrained spacers there-between and lubricated end roller bearings |
| 01/12/1982 | CA1115942A1 Hot melt adhesive foam pump system |
| 10/07/1981 | EP0037294A2 Single screw pump installation for the transport of pasty products possessing a high viscosity |
| 06/16/1981 | US4273515 Liquid ring pump |
| 05/12/1981 | US4266581 Vacuum treatment unit |
| 03/31/1981 | US4259045 Gear pump or motor units with sleeve coupling for shafts |
| 02/03/1981 | CA1094836A1 Heat pumps |
| 01/27/1981 | US4247263 Pump assembly incorporating vane pump and impeller |
| 01/07/1981 | EP0020354A1 Manifolded multiple hydraulic pump structure. |
| 12/30/1980 | US4241484 Method for assembling a fuel pump and motor |
| 12/23/1980 | US4240567 Pump |
| 11/14/1980 | EP0020354A4 Manifolded multiple hydraulic pump structure. |
| 09/23/1980 | CA1086136A1 Pump and motor assembly |
| 07/29/1980 | US4214652 Variable power transmission and absorption device |
| 07/15/1980 | US4212601 Motor pump |
| 07/10/1980 | WO1980001401A1 Manifolded multiple hydraulic pump structure |
| 07/01/1980 | CA1080544A1 Pump assembly incorporating vane pump and impeller pump |
| 06/25/1980 | EP0012544A1 Liquid ring pump |
| 06/11/1980 | EP0012015A1 Apparatus for delivering varying quantities of a fluid |
| 06/10/1980 | US4207033 Pump and motor assembly for use in regulating a flow of fuel from a source of fuel to an operating chamber of an engine of a vehicle |
| 05/28/1980 | EP0011304A1 Oscillating hydraulic motor |
| 05/27/1980 | US4204811 Fluid pumping system |
| 05/13/1980 | US4202657 Fluid pump |
| 05/06/1980 | US4201521 Pump and motor assembly |
| 04/29/1980 | US4200207 Hot melt adhesive foam pump system |
| 04/01/1980 | US4195971 Fuel pump and motor assembly |
| 04/01/1980 | US4195480 Manifolded multiple hydraulic pump structure |
| 01/15/1980 | US4183352 Pressure-isolating circulating pump for solar water heating |
| 01/01/1980 | US4181473 Motor pump |
| 11/06/1979 | US4173438 Rotary piston device which displaces fluid in inner and outer variable volume chambers simultaneously |
| 09/19/1979 | EP0004119A2 Gear-type machine with toothed wheels circumferentially staggered with respect to each other |
| 07/03/1979 | CA1057579A1 Fluid pump |
| 01/16/1979 | US4134712 Fuel supply unit consisting of a pump and an electromotor |
| 12/05/1978 | US4128365 Fuel supply unit |
| 09/26/1978 | US4116588 Fluid pump |
| 08/08/1978 | US4105369 Two-stage pump |
| 10/18/1977 | USRE29445 Pump and electric drive motor unit |
| 01/25/1977 | US4004862 Battery powered fluid transfer apparatus |
| 10/12/1976 | US3985472 Combined fixed and variable displacement pump system |
| 08/24/1976 | US3975910 Variable volume liquid pumping system |
| 07/13/1976 | US3969044 Fuel pump assembly |
| 05/25/1976 | US3958494 Multiple displacement hydraulic motor drive apparatus |
| 03/16/1976 | US3944378 Rotary fluid displacement apparatus with orbiting toothed ring member |