Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7993110 | Steam-generator and gas-compressor systems using water-based evaporation coolants, sealants and lubricants A gas/air compressor system used for compressing a gas/air stream of air, oxygen, oxygen-enriched air and other combustible gases and delivering a moderate-to-high temperature, moderate-to-high pressure fluid to a pipeline connected to one or more injection wells. F... | 08/09/2011 |
| 7828530 | Electric motor pump for swimming pool maintenance The invention concerns a dual pump, comprising an electric motor (18) including a drive shaft, the shaft including, at each of its axial ends, a shaft output (21, 22), and two pump impellers, each shaft output driving a respective pump impeller, one fi... | 11/09/2010 |
| 7758317 | Method of analyzing vaporization pattern of solvent and solvent vacuum vaporization device A method for analysis of solvent evaporation patterns includes: continuously evacuating the gas of a single-component or multicomponent solvent evaporated under desired evaporation conditions from an object containing the single-component or multicomponent solvent h... | 07/20/2010 |
| 7377755 | Multi-stage rotary compressor A multi-stage rotary compressor to reduce a driving load and prevent a malfunction due to an abrupt pressure rising. In the compressor of the type including first and second compressing units mounted in a hermetic casing thereof to compress a gas, the gas being prim... | 05/27/2008 |
| 7377753 | Fuel supply pump In a fuel supply pump, a fuel relief path relieves a part of fuel, which is supplied through a part of fuel supply path connected between a control valve and a compressing chamber of a pump element, into a slidably contact portion between a plunger of the pump eleme... | 05/27/2008 |
| 7329105 | Multi-directional pump A multi-directional pump is disclosed generally comprising a housing with inlet and outlet ports, a pumping device disposed therein, a first chamber in fluid communication with the inlet port, and a second chamber in fluid communication with the first chamber. The f... | 02/12/2008 |
| 7314351 | Fuel supply pump capable of lubricating cam bearings A fuel supply pump uses a low-pressure supply pump for pumping up a low-pressure fuel, and a pump element having a plunger for increasing pressure of the low-pressure fuel supplied by the low-pressure supply pump. Part of the low-pressure fuel discharged from the lo... | 01/01/2008 |
| 7278818 | Turbomachine for low temperature applications A turbomachine for low-temperature applications has a housing, a rotor shaft disposed in the housing, an impeller disposed on one shaft end of the rotor shaft, to which a cold gas is applied, and an electrical machine integrated into the housing. During operation of... | 10/09/2007 |
| 7226273 | Method of generating compressed air, and compressor arrangement for implementing the method Method and compressor arrangement for generating compressed air, particularly for commercial vehicles, which is generated by way of a compressor unit (3) driven by an internal-combustion engine (1) from the ambient air according to a control unit (1... | 06/05/2007 |
| 7226276 | Multi-stage reciprocating vacuum pump and method of operating the same A multi-stage reciprocating vacuum pump includes first (2) and second (4) pump chambers located in the pump housing (1) and in which respective pistons (6, 8) reciprocate, first and second conduits (14, 20) for communicating, respe... | 06/05/2007 |
| 7193341 | Turbomachine for low-temperature applications A turbomachine for low-temperature applications, has a rotor shaft; at least one rotor disk that is arranged in overhung manner at one shaft end of the rotor shaft; an electric machine having a stator having windings, and an electric rotor arranged on the rotor shaf... | 03/20/2007 |
| 7178592 | Closed loop multiphase underbalanced drilling process The present invention provides apparatus and methods for handling fluids returning from a well. The fluids are introduced into a separator and a separated gas stream is recovered or recycled. The gas stream may comprise more than one phase. The separated gas stream ... | 02/20/2007 |
| 7144226 | Centrifugal compressor having a flexible coupling This compressor unit comprises a motor (34) and at least one compressor (44) comprising a driven shaft (54) driven by the rotor of the motor and bladed wheels fitted on the driven shaft (54), the assembly composed of the motor and the com... | 12/05/2006 |
| 7140846 | Vacuum pump having main and sub pumps A vacuum pump having a rotary shaft that is rotated by a drive source has a main pump and a sub pump. The main pump includes a pump chamber and a gas transferring body that is located in the pump chamber. The main pump is driven by the drive source through the rotar... | 11/28/2006 |
| 7131285 | Refrigerant cycle with plural condensers receiving refrigerant at different pressure A refrigerant cycle is provided with a compressor system, capable of simultaneously delivering refrigerant to multiple condensers operating at different temperature levels. A single evaporator communicates with these condensers. One of the condensers receives fully ... | 11/07/2006 |
| 7128054 | Fuel injection system for an internal combustion engine The fuel injection system has a high-pressure pump, by which fuel is pumped at high pressure into a reservoir. By means of a feed pump, fuel is pumped from a fuel tank to the high-pressure pump. By means of a fuel metering device, disposed between the feed pump and ... | 10/31/2006 |
| 7025044 | Pump assembly and method A pump assembly includes a high-pressure pump that flows pressurized working fluid in a fuel injection system of a diesel engine. The assembly includes a pilot-operated inlet throttle valve that receives a flow of low-pressure fluid from a feed pump and controls the... | 04/11/2006 |
| 7000424 | Refrigerant cycling device A refrigerant cycling device is provided. The refrigerant cycling device comprises a compressor, an intermediate cooling circuit and a three-way valve device. The compressor is connected to a heat exchanger and a depressurizing means, for performing a cooling operat... | 02/21/2006 |
| 6997685 | Hydraulic system comprising a main pump and a precompression pump The invention relates to a hydraulic system (1) comprising a main pump (12) and a precompression pump (5), whereby the outlet (8) of the precompression pump (5) is connected by a connecting line (9) to the inlet (11) ... | 02/14/2006 |
| 6976473 | Fuel injection system for an internal combustion engine The fuel injection system has a high-pressure pump, by which fuel is pumped into a reservoir, with which injectors disposed on cylinders of the engine communicate. A feed pump pumps fuel out of a fuel tank to the high-pressure pump and a fuel metering device trigger... | 12/20/2005 |
| 6966967 | Variable speed pump control A method and apparatus for monitoring operating characteristics and/or control signals of a system comprising a variable speed vacuum pump. Operating characteristics and/or control signals of the system may be monitored, and the pumping speed of the variable speed v... | 11/22/2005 |
| 6817839 | Device for delivering moist gases A multistage device (1) for delivering moist gases is provided. Said device comprises several delivery pumps (2, 3) each of which having a displacer that oscillates inside a delivery space, and being connected in series via a connection channel (6 | 11/16/2004 |
| 6810671 | Method for the fuel supply and a fuel supply system for aircraft equipped with at least one aero gas turbine The invention relates to a method for the fuel supply of an aero gas turbine installed in an aircraft and to a fuel supply system. In order to avoid negative effects by out-gassed air in the fuel lines, the invention provides for an increased flow rate of the fuel i... | 11/02/2004 |
| 6811383 | Oil catching device and oil pump for an internal-combustion engine, and method of making and using same An oil catching device and an oil pump for an internal-combustion engine are provided, having an oil catching housing which is arranged below a crankcase and which has at least two oil collecting spaces, in a first oil collecting space an oil pump being arranged whi... | 11/02/2004 |
| 6589023 | Device and method for reducing vacuum pump energy consumption Generally, a vacuum pumping system having efficient power usage is provided. In one embodiment, the vacuum pumping system includes a first pump, a check valve and a second pump. The check valve and second pump are coupled in parallel to an exhaust line of... | 07/08/2003 |
| 6506027 | Two stage compressor and a method for cooling such a compressor A helical screw compressor is provided having a first compressor stage and a second compressor stage. The helical screw compressor includes a first male rotor and a first female rotor in the first compressor stage, and a second male rotor and a second fem... | 01/14/2003 |
| 6464469 | Cooling system for electromagnetic bearings of a turbocompressor A turbocompressor (1) has an electric motor (2), a multistage radial turbocompressor (3) and a common shaft (13). A section of the shaft (13) is formed as the armature (2b) of the electric motor (2) and a further section of the shaft (13) is formed as the... | 10/15/2002 |
| 6447262 | Pumping system for a multi-stage pump A pumping system for selectively activating the stages of a multi-stage centrifugal pump is provided. The pumping system has a first stage impeller for receiving fluid into the system and imparting rotational energy into the fluid. The system also has a s... | 09/10/2002 |
| 6390789 | Cooling means for the motor of a turbocompressor A turbocompressor (1) has an outwardly gas-tight housing (6) within which an electric motor (2) and a multistage radial turbocompressor (3) are arranged on a common shaft (13). For journalling the shaft (13), electromagnetic radial bearings (5) are arrang... | 05/21/2002 |
| 6305911 | Device and process intended for two-phase compression of a gas soluble in a solvent The invention is a two-phase compression device and a process which provides energy to fluids including an essentially liquid fluid and an essentially gaseous fluid or a fluid having a liquid phase and a gas phase, at least one of the fluids or phases bei... | 10/23/2001 |
| 6240904 | Stand alone multi stage fuel pump A two-stage marine fuel pump (10). A first pump stage (S1) has a fuel inlet (24) and a fuel outlet (26). A second pump stage (S2) has a separate fuel inlet (28) and fuel outlet (30). Each pump stage is stand alone such that while the outlet of the first p... | 06/05/2001 |
| 6241492 | High pressure pump A high pressure fluid pump 10 supplies fluids to a water blasting or cutting gun 14. The pump 10 is preferably of the in-line type, wherein both an inlet check valve 60 and a discharge check valve 62 move linearly along the axis 40 of the plunger 30 durin... | 06/05/2001 |
| 6210126 | Device and process intended for two-phase compression of a gas soluble in a solvent The invention is a two-phase compression device and a process which provides energy to fluids including an essentially liquid fluid and an essentially gaseous fluid or a fluid having a liquid phase and a gas phase, at least one of the fluids or phases bei... | 04/03/2001 |
| 6200107 | Vacuum pumping systems A vacuum pumping system for use with a process chamber. The pumping system has a first vacuum pump whose inlet is adapted for communication via a first line with a chamber outlet and a second vacuum pump whose inlet is adapted for communication via a seco... | 03/13/2001 |
| 6167724 | Pump A cryogenic rotary pump for pressurizing a flow of a cryogenic liquid and for dividing the flow into a first lower pressure and a second higher pressure stream has a series of pumping chambers. A single rotary drive shaft carries a rotary inducer located ... | 01/02/2001 |
| 6142747 | Fuel pump assembly The invention relates to a fuel pump assembly having a low-pressure region (ND) with at least one low-pressure pump-and a high-pressure region (HD) with at least one regulated-quantity high-pressure pump, which pumps a quantity of fuel required to compens... | 11/07/2000 |
| 6135723 | Efficient Multistage pump A multi-stage pump has a housing defining a plurality of stages each having an internal rotor enclosure with each enclosure having a non-pumping inlet and outlet. A plurality of rotor assemblies are operatably contained in housing extending through all of... | 10/24/2000 |
| 6129518 | Perfected pumping device for feeding fuel from a tank to an internal combustion engine An on-off valve is connected between a high-pressure pump and a low-press pump and is sized to be rapidly activated during the cranking stage of an internal combustion engine. After actuating the on-off valve, surplus fuel is drained into an inner chambe... | 10/10/2000 |
| 6079797 | Dual action ball screw pump A ball screw pump assembly includes a pump body having an axial bore defining a travel chamber and a pressure chamber. An input port and an output port are formed in the pressure chamber. A ball screw is provided in the travel chamber. A piston is connect... | 06/27/2000 |
| 6071085 | Gas ballast system for a multi-stage positive displacement pump A gas ballast system for a multi-stage positive displacement pump in which a first stage includes at least one positive displacement pump stage, is equipped with an inlet valve and an outlet valve, and is connected with the following stage by an intermedi... | 06/06/2000 |
