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| Number | Title | Issue Date |
| 8235682 | Pump including an insertion valve sleeve having at least one orifice Pump, in particular a servo steering pump for motor vehicles, having a flow control valve and a valve sleeve which has inflow openings to the flow control valve and a pressure connection to a hydraulic load. ... | 08/07/2012 |
| 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 |
| 7363913 | High-pressure pump for a fuel injection system of an internal combustion engine A high-pressure pump has at least one pump element, with a pump piston which is guided displaceably in a cylinder bore of a housing part of the high-pressure pump and is driven in a reciprocating motion and defines a pump work chamber in the cylinder bore, into whic... | 04/29/2008 |
| 7360999 | Means for using single force sensor to supply all necessary information for determination of status of medical pump A medical pump, for use with a cassette having a pumping chamber, includes a pumping element with a piston slider assembly which intermittently pressurizes the pumping chamber during a pumping cycle and has a piston head connected to a main body with a single pressu... | 04/22/2008 |
| 7353654 | Method and apparatus for achieving power augmentation in gas turbines using wet compression A gas turbine unit and method of operation thereof are disclosed. A very quick and easily controllable augmentation or reduction of shaft power produced by the gas turbine unit, in particular of large gas turbine units exhibiting a pressure ratio larger than 15 bar,... | 04/08/2008 |
| 7354253 | Oil pump An oil pump includes: a rotor 3 for actuating a pump action to suck oil in a suction passage 24 from a suction port 27 to supply oil to a delivery passage by way of a delivery port 19; and a flow control valve for returning an excessive o... | 04/08/2008 |
| 7353655 | Method and apparatus for achieving power augmentation in gas turbine using wet compression A gas turbine unit as well as a method for operating a gas turbine with high-pressure turbine and a low-pressure turbine unit are disclosed. A very quick and at the same time easily controllable augmentation or reduction of the shaft power of the gas turbine unit ca... | 04/08/2008 |
| 7353656 | Method and apparatus for achieving power augmentation in gas turbines using wet compression A gas turbine unit and method of operation thereof are disclosed. A very quick and easily controllable augmentation or reduction of shaft power produced by the gas turbine unit, in particular of large gas turbine units exhibiting a pressure ratio larger than 15 bar,... | 04/08/2008 |
| 7331769 | Pumping system A pumping system including a fluid inlet line and a primary pump for the fluid. The primary pump includes an impeller in an impeller chamber, with the impeller chamber adapted to receive fluid from the inlet line. A suction chamber is above the impeller chamber, wit... | 02/19/2008 |
| 7318509 | Temperature compensating hydraulic shear pump Pump pressure output can be controlled as temperature changes by a temperature compensation element. The present invention provides a shear channel constructed out of two or more materials enabling a pump to have a pressure profile as a function of temperature for a... | 01/15/2008 |
| 7284453 | Method and apparatus for maximizing liquid aspiration from small vessels Apparatus and method for aspirating liquid from a container, e.g., a test tube or other vessel, includes apparatus for sensing that an aspiration probe tip is contacting the inside bottom wall of the container, whereby a maximum volume of liquid can be aspirated fro... | 10/23/2007 |
| 7234449 | Common fuel rail fuel system for locomotive engine A common rail fuel injection apparatus (1) for a multi-bank, diesel locomotive engine (10). A common rail (20,22) is disposed proximate each bank (20,22) of cylinders (12) of the engine to provide high pressure fuel (30) to ... | 06/26/2007 |
| 7197890 | Valve for preventing unpowered reverse run at shutdown An inventive method of preventing unpowered reverse rotation in a compressor includes the steps of placing a solenoid valve at a location near compressor discharge. The valve is preferably actuated soon after the power to the motor is cut off, blocking the flow of r... | 04/03/2007 |
| 7175397 | Effervescent gas bleeder apparatus A diaphragm metering pump suitable for metering an effervescent gas. The pump has a pump head with a product chamber having an inlet end with a one-way inlet valve and an outlet end with a one-way outlet valve. A displaceable diaphragm member defines a boundary of t... | 02/13/2007 |
| 7156903 | Sound enclosure for portable oxygen concentrators A portable pressure swing adsorption apparatus and conservation device for medical use, and a sound enclosure for the apparatus having two isolating sections to enclose the apparatus, the enclosure having an inlet in one of the sections for allowing ambient air into... | 01/02/2007 |
| 7121266 | Fuel pump cutoff shuttle valve A fuel pump cutoff shuttle valve is located between a multiple fuel pump arrangement. The valve has a first tubular member with a hollow, biased sliding member inside that moves according to the fuel pressures of the pumps. The fuel that flows through the valve memb... | 10/17/2006 |
| 7121813 | Reverse rotation preventing structure of centrifugal compressor The invention relates to a reverse rotation preventing structure of a centrifugal compressor. The reverse rotation preventing structure of the centrifugal compressor comprises: a discharge pipeline of the centrifugal compressor; a suction pipeline of the centrifugal... | 10/17/2006 |
| 7117854 | Reservoir assembly having interchangeable fuel suction unit and fuel pump assembly for vehicles A reservoir assembly 10 is provided for a fuel tank of a vehicle. The reservoir assembly 10 is constructed and arranged to receive an electric fuel pump assembly 44 or a fuel suction unit 23 in a reservoir 12 thereof. The fuel suct... | 10/10/2006 |
| 7048515 | Hydraulic drive system and method using a fuel injection control unit A fuel injection control unit, including an electronic governor and a controller for an engine performs control in a governor region based on an isochronous characteristic. A working machine controller receives a delivery pressure signal P and controls a regulator s... | 05/23/2006 |
| 6959536 | Fuel pump metering system The present invention provides a widely variable and yet precisely controlled system for metering the flow of fuel to an engine component. The present invention utilizes a plurality of solenoid activated injector valves to meter fuel into an output plenum where the ... | 11/01/2005 |
| 6942470 | Motor pump system with axial through flow utilizing an incorporated flowmeter and pressure controller Motor pump system includes an electromagnetic motor comprising a main body, a coil, and a movable hollow free piston. A flow meter is coupled to one end of the electromagnetic motor. A cylinder block is coupled to another end of the electromagnetic motor. At least t... | 09/13/2005 |
| 6904762 | Pump pressure limiting method A novel pump pressure limiting method for preventing coolant in a cooling system from reaching pressures that exceed predetermined system coolant pressure limits. The method includes reducing the system coolant pressure, as needed to prevent system over-pressurizati... | 06/14/2005 |
| 6786202 | Hydraulic pump circuit A hydraulic pump is provided that includes a housing having a fluid inlet and a fluid outlet. A pumping element is operable to increase the pressure of fluid received through the fluid inlet and to generate a flow of pressurized fluid through the fluid outlet. A con... | 09/07/2004 |
| 6773237 | Air compressor workbench A workbench for an air compressor that includes a work surface as its top surface. The workbench is provided on wheels, such as caster wheels. The workbench may be closed by panels to attenuate sound. The panels may be removable to provide access to the compressor f... | 08/10/2004 |
| 6772734 | Fuel injection system for internal combustion engines exhibiting improved start behavior A fuel injection system in which, by means of a controlled zero-feed throttle or by the elimination of the zero-feed throttle and by a suitable control of the pressure valve of a common rail, the starting performance of the internal combustion engine can be improved... | 08/10/2004 |
| 6685440 | Methods of pressure fluctuation dampening A pressure booster and method for amplifying a water pressure that is supplied by a water facility is provided. The pressure booster is configured to be connected between the water facility and one or more semiconductor substrate cleaning systems. The pre... | 02/03/2004 |
| 6684946 | Gas-lock re-prime device for submersible pumps and related methods A submersible pump assembly has a pump and a valve connected to the outlet of the pump. An outlet of the valve is connected to a riser. A valve member in the valve housing is vertically movable between a pumping position and a priming position, the valve ... | 02/03/2004 |
| 6682316 | Dispensing system for petrol-pumps, including a bypass and principle valve A dispensing system for petrol pumps, comprising a pump, a dispensing valve in a petrol pump nozzle and an electrically controllable solenoid valve (10), characterized in that the solenoid valve (10) includes a directly acting principal valve (18) and a b... | 01/27/2004 |
| 6663357 | Vane pump wear sensor for predicted failure mode A vane pump is disclosed for use with gas turbine engines adapted and configured to provide a failure mode similar to that of a traditional gear pump. The vane pump includes a pump housing, a cam member, a cylindrical rotor member and a mechanism for comm... | 12/16/2003 |
| 6641372 | Dual discharge hydraulic pump and system therefor A hydraulic pump includes a housing, a primary discharge outlet, an auxiliary discharge outlet, and a flow control valve for controlling fluid flow from the primary and auxiliary discharge outlets. A first fluid passageway within the housing passes fluid ... | 11/04/2003 |
| 6619025 | Ecology valve and system in an aircraft engine fuel system The present invention is directed toward an ecology valve that drains working fuel to the sump chamber of the ecology valve upon engine shut down. The ecology valve has a piston slidable in the piston chamber between shut-off and run positions. The piston... | 09/16/2003 |
| 6561767 | Converting a pump for use in supercritical fluid chromatography A method for converting a pump for use in a flow stream containing a mixture of highly compressed gas, compressible liquid or supercritical fluid wherein the pump delivers a compressible fluid against a back-pressure regulator which in turn delivers a con... | 05/13/2003 |
| 6551068 | Process for protecting a turbocompressor from operating in the unstable working range To protect a turbocompressor (3) with a downstream process from operation in the unstable working range, a machine controller is used, which optionally contains--besides a surge limit controller (15)--an intake pressure controller (11), an end pressure co... | 04/22/2003 |
| 6537033 | Open loop control apparatus for vacuum controlled systems An open loop feedback control apparatus for a vacuum controlled system for providing vacuum stability within a predetermined range of vacuum levels is shown. The open loop feedback control apparatus includes a vacuum regulator having a diaphragm including... | 03/25/2003 |
| 6499963 | Coolant pump for automotive use An impeller pump with thermostatically adjustable guide vanes is suitable for use as an automotive coolant pump. The pump is driven by a constant speed electric motor, and flow variation is controlled by varying the orientation of the vanes. Orientation o... | 12/31/2002 |
| 6471487 | Fluid delivery system The fluid delivery system comprises a Coriolis mass flowmeter, a pump, a recirculation valve, and/or a back-pressure valve. The fluid delivery system prevents the measurement of a multiphase fluid flow without the need for an air eliminator and strainer. ... | 10/29/2002 |
| 6468052 | Vacuum relief device for fluid transfer and circulation systems A safety device for use in a fluid transfer and/or circulation system of the type which uses a pump to draw water from a reservoir through one or more intake lines each extending from an open end at the reservoir to the pump intake. The safety device conn... | 10/22/2002 |
| 6461117 | Reversible volume oil pump A fluid pump is provided that produces an outflow of fluid that is not proportional to the speed of the input drive. Thus, the fluid pump can be tuned to provide a substantially constant outflow of fluid irrespective of the speed of the input drive. The f... | 10/08/2002 |
| 6443703 | Scroll compressor with motor protector in suction flow path Motor protectors are positioned in a location in a scroll compressor where they are cooled by suction refrigerant flow. If the volume of refrigerant flow decreases, then the cooling effect also decreases. In this way, the protector becomes more sensitive ... | 09/03/2002 |
| 6406273 | Pressure fluctuation dampening system A pressure booster and method for amplifying a water pressure that is supplied by a water facility is provided. The pressure booster is configured to be connected between the water facility and one or more semiconductor substrate cleaning systems. The pre... | 06/18/2002 |
