Pumps inventions 10/08

20080260539 - Apparatus and method for controlling supply of barrier gas in a compressor module: An apparatus for controlling the supply of barrier gas to a compressor module includes a pressure housing containing an electric motor which via a shaft is drivably connected to a compressor. The shaft is supported by magnetic bearings and at least one axial seal around the shaft which divides the... Agent: Young & Thompson

20080260541 - Induction motor control: The operation of an AC induction motor 24 is controlled in response to the actual slip exhibited by the motor during operation. The slip of the motor 24 may be determined by determining the actual running speed, n, of the motor shaft 25A, measuring the line frequency, ns, of the... Agent: Marjama Muldoon Blasiak & Sullivan LLP

20080260540 - Pump controller system and method: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions... Agent: Greenberg Traurig (phx)

20080260542 - Electroosmotic pump system and electroosmotic pump: A projection is formed on a pump body of an electroosmotic flow pump so as to face a communication hole of a micro fluid chip. When the projection and the communication hole are fitted together, a first flow path of the pump and a second flow path of the micro... Agent: Steptoe & Johnson LLP

20080260543 - Liquid ring compressor: Liquid ring compressor, characterized by an eccentric inner rotor (6) is supported in axles (8,9) to an outer co-rotor (3) for the liquid ring, where the beating of the co-rotors (11) is outside the same axles on each side is enclosed in an enclousure where it on each sides of... Agent: Millen, White, Zelano & Branigan, P.C.

20080260544 - Clamping sleeve for an ejector, and mounting procedure: An ejector which is operative for generating a sub-pressure, has a rotationally symmetric ejector body arranged to be mounted in the mouth of a seat having a circular internal section, whereby in a mounted position an inlet end of the ejector body is inserted in the seat and an outlet... Agent: Young & Thompson

20080260545 - Variable capacity oil pump: The invention relates to a wind turbine being provided with a fluid displacement means for ensuring a certain increased pumping capacity at a certain reduced rotational speed of the main shaft of the rotor and thus of a drive shaft from a gear box of the wind turbine. The invention... Agent: Cantor Colburn, LLP

20080260546 - Compressor sound suppression: A compressor apparatus having a check valve (70) having a first condition permitting downstream flow along the flowpath and a second condition blocking a reverse flow. The valve element includes a resonator (112).... Agent: Bachman & Lapointe, P.C. (utc)

20080260547 - Compressor sound suppression: A compressor includes a housing and one or more working elements. A muffler is located downstream of the discharge plenum and a helmholtz resonator is located in the discharge plenum upstream of the muffler.... Agent: Bachman & Lapointe, P.C. (utc)

20080260548 - Wave energy converter: A stationary structure is mounted on the floor of an ocean or other body of water subject to wave motion. The structure provides a floatation body that moves with the waves and is able to drive a sealing plate in a compression chamber. When the water level changes, or wave... Agent: Ned M. Ahdoot

20080260549 - Chemical liquid supplying apparatus: A chemical liquid supplying apparatus which can discharge chemical liquid with high accuracy is provided. The apparatus is used to discharge the chemical liquid in a chemical liquid tank from an application nozzle. The apparatus has a combined member formed integrally with a pump case and a cylinder, and a... Agent: Mccormick, Paulding & Huber LLP

20080260550 - Deep well irrigation pump: Provided herein are exemplary embodiments of an efficient pump apparatus. In one embodiment the pump apparatus comprises a piston assembly loosely disposed within a cylinder. The piston assembly includes a driving cable connecting a top leaky piston and a bottom leaky piston having a check valve connected thereto. The cylinder... Agent: Goodwin Procter LLP Patent Administrator

20080260551 - Rolling diaphragm pump: A rolling diaphragm pump includes a housing, a rolling seal diaphragm disposed in the housing, a piston for driving the diaphragm, and a valve for regulating the flow of working fluid in a portion of the housing. A constant differential pressure is maintained across the diaphragm independent of discharge pressure... Agent: Steptoe & Johnson LLP

20080260552 - Membrane pump: A membrane pump powered by an activating element includes a chamber body. The interior of the chamber body is provided with a first chamber and a second chamber that are in fluid communication with each other. One side or both sides of the chamber body are provided with an inlet... Agent: Hdsl

20080260553 - Membrane pump device: A membrane pump device powered by an activating element includes a chamber body and a second chamber body. The interior of the chamber body is provided with a chamber. Both sides of the chamber body are provided with an inlet pipeline and an outlet pipeline that are in fluid communication... Agent: Hdsl

20080260554 - Fan with attachment hooks: A device for cooling a pet includes a fan with a housing. A motor coupled with a blade positioned in the housing. The motor is electrically coupled with a power source to energize the motor to rotate the blade. At least one member is coupled with the housing. The at... Agent: Harness, Dickey & Pierce, P.L.C

20080260555 - Washer fluid pump: In a washer fluid pump (2) for a window cleaning system (3) of a motor vehicle, a ventilation duct (21) of an electric motor (9) is guided in a labyrinth from a first plane (22) arranged in the electric motor (9) into the environment via a second plane (24) arranged... Agent: Baker Botts L.L.P. Patent Department

20080260556 - Integrated pump and motor: An integrated motor pump for use in medical devices and the like.... Agent: Beck And Tysver P.l.l.c.

20080260557 - Floating pump for irrigation and other applications: A submersible pump for irrigation and other purposes is enclosed within a floating housing including a buoyant top portion, such that the housing remains substantially vertical during use. A spacer bracket is used to keep the pump away from the inner walls of the housing, and, in the preferred embodiment,... Agent: Gifford, Krass, Sprinkle,anderson & Citkowski, P.c

20080260558 - Device and methods of measuring pressure: Embodiments of the present invention are directed to method and devices for measuring the pressure of a pump chamber in which no internal opening or connections are needed. One embodiment of the present invention is directed to an apparatus for pumping fluid. The apparatus comprises at least one housing having... Agent: Waters Investments Limited C/o Waters Corporation

20080260559 - Harmonic motion pumping tube: A pump comprises a vertical pumping tube fitted with a check valve supported against gravity and held in tension by extension springs; a lower spring stretched between the pumping tube and a dead weight; an upper spring stretched between the pumping tube and a rigid frame; a scotch yoke, escapement,... Agent: Donald George Mcedwards

20080260560 - Piston pump for thick materials: The invention relates to a multi-cylinder thick matter pump (1) which is used to continuously deliver especially concrete. Said thick matter pump comprises at least two delivery cylinders (3, 5) which transport the thick matter from a prefill tank (7) into a delivery pipe and a reversing valve (9) for... Agent: Van Dyke, Gardner, Linn & Burkhart, LLP

20080260561 - Hermetic compressor with internal thermal insulation: A hermetic compressor with internal thermal insulation, comprising: a compression cylinder having one end closed by a valve plate provided with a discharge orifice and having a front face against which is mounted a cylinder cover internally defining a discharge chamber; and a spacing duct having one inlet end hermetically... Agent: Darby & Darby P.C.

20080260539 - Apparatus and method for controlling supply of barrier gas in a compressor module: An apparatus for controlling the supply of barrier gas to a compressor module includes a pressure housing containing an electric motor which via a shaft is drivably connected to a compressor. The shaft is supported by magnetic bearings and at least one axial seal around the shaft which divides the... Agent: Young & Thompson

20080260541 - Induction motor control: The operation of an AC induction motor 24 is controlled in response to the actual slip exhibited by the motor during operation. The slip of the motor 24 may be determined by determining the actual running speed, n, of the motor shaft 25A, measuring the line frequency, ns, of the... Agent: Marjama Muldoon Blasiak & Sullivan LLP

20080260540 - Pump controller system and method: A method and apparatus for a pump control system. One or more embodiments of the invention include a pump controller that can perform a self-calibrating procedure, can provide precise motor speed control, can provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions... Agent: Greenberg Traurig (phx)

20080260542 - Electroosmotic pump system and electroosmotic pump: A projection is formed on a pump body of an electroosmotic flow pump so as to face a communication hole of a micro fluid chip. When the projection and the communication hole are fitted together, a first flow path of the pump and a second flow path of the micro... Agent: Steptoe & Johnson LLP

20080260543 - Liquid ring compressor: Liquid ring compressor, characterized by an eccentric inner rotor (6) is supported in axles (8,9) to an outer co-rotor (3) for the liquid ring, where the beating of the co-rotors (11) is outside the same axles on each side is enclosed in an enclousure where it on each sides of... Agent: Millen, White, Zelano & Branigan, P.C.

20080260544 - Clamping sleeve for an ejector, and mounting procedure: An ejector which is operative for generating a sub-pressure, has a rotationally symmetric ejector body arranged to be mounted in the mouth of a seat having a circular internal section, whereby in a mounted position an inlet end of the ejector body is inserted in the seat and an outlet... Agent: Young & Thompson

20080260545 - Variable capacity oil pump: The invention relates to a wind turbine being provided with a fluid displacement means for ensuring a certain increased pumping capacity at a certain reduced rotational speed of the main shaft of the rotor and thus of a drive shaft from a gear box of the wind turbine. The invention... Agent: Cantor Colburn, LLP

20080260546 - Compressor sound suppression: A compressor apparatus having a check valve (70) having a first condition permitting downstream flow along the flowpath and a second condition blocking a reverse flow. The valve element includes a resonator (112).... Agent: Bachman & Lapointe, P.C. (utc)

20080260547 - Compressor sound suppression: A compressor includes a housing and one or more working elements. A muffler is located downstream of the discharge plenum and a helmholtz resonator is located in the discharge plenum upstream of the muffler.... Agent: Bachman & Lapointe, P.C. (utc)

20080260548 - Wave energy converter: A stationary structure is mounted on the floor of an ocean or other body of water subject to wave motion. The structure provides a floatation body that moves with the waves and is able to drive a sealing plate in a compression chamber. When the water level changes, or wave... Agent: Ned M. Ahdoot

20080260549 - Chemical liquid supplying apparatus: A chemical liquid supplying apparatus which can discharge chemical liquid with high accuracy is provided. The apparatus is used to discharge the chemical liquid in a chemical liquid tank from an application nozzle. The apparatus has a combined member formed integrally with a pump case and a cylinder, and a... Agent: Mccormick, Paulding & Huber LLP

20080260550 - Deep well irrigation pump: Provided herein are exemplary embodiments of an efficient pump apparatus. In one embodiment the pump apparatus comprises a piston assembly loosely disposed within a cylinder. The piston assembly includes a driving cable connecting a top leaky piston and a bottom leaky piston having a check valve connected thereto. The cylinder... Agent: Goodwin Procter LLP Patent Administrator

20080260551 - Rolling diaphragm pump: A rolling diaphragm pump includes a housing, a rolling seal diaphragm disposed in the housing, a piston for driving the diaphragm, and a valve for regulating the flow of working fluid in a portion of the housing. A constant differential pressure is maintained across the diaphragm independent of discharge pressure... Agent: Steptoe & Johnson LLP

20080260552 - Membrane pump: A membrane pump powered by an activating element includes a chamber body. The interior of the chamber body is provided with a first chamber and a second chamber that are in fluid communication with each other. One side or both sides of the chamber body are provided with an inlet... Agent: Hdsl

20080260553 - Membrane pump device: A membrane pump device powered by an activating element includes a chamber body and a second chamber body. The interior of the chamber body is provided with a chamber. Both sides of the chamber body are provided with an inlet pipeline and an outlet pipeline that are in fluid communication... Agent: Hdsl

20080260554 - Fan with attachment hooks: A device for cooling a pet includes a fan with a housing. A motor coupled with a blade positioned in the housing. The motor is electrically coupled with a power source to energize the motor to rotate the blade. At least one member is coupled with the housing. The at... Agent: Harness, Dickey & Pierce, P.L.C

20080260555 - Washer fluid pump: In a washer fluid pump (2) for a window cleaning system (3) of a motor vehicle, a ventilation duct (21) of an electric motor (9) is guided in a labyrinth from a first plane (22) arranged in the electric motor (9) into the environment via a second plane (24) arranged... Agent: Baker Botts L.L.P. Patent Department

20080260556 - Integrated pump and motor: An integrated motor pump for use in medical devices and the like.... Agent: Beck And Tysver P.l.l.c.

20080260557 - Floating pump for irrigation and other applications: A submersible pump for irrigation and other purposes is enclosed within a floating housing including a buoyant top portion, such that the housing remains substantially vertical during use. A spacer bracket is used to keep the pump away from the inner walls of the housing, and, in the preferred embodiment,... Agent: Gifford, Krass, Sprinkle,anderson & Citkowski, P.c

20080260558 - Device and methods of measuring pressure: Embodiments of the present invention are directed to method and devices for measuring the pressure of a pump chamber in which no internal opening or connections are needed. One embodiment of the present invention is directed to an apparatus for pumping fluid. The apparatus comprises at least one housing having... Agent: Waters Investments Limited C/o Waters Corporation

20080260559 - Harmonic motion pumping tube: A pump comprises a vertical pumping tube fitted with a check valve supported against gravity and held in tension by extension springs; a lower spring stretched between the pumping tube and a dead weight; an upper spring stretched between the pumping tube and a rigid frame; a scotch yoke, escapement,... Agent: Donald George Mcedwards

20080260560 - Piston pump for thick materials: The invention relates to a multi-cylinder thick matter pump (1) which is used to continuously deliver especially concrete. Said thick matter pump comprises at least two delivery cylinders (3, 5) which transport the thick matter from a prefill tank (7) into a delivery pipe and a reversing valve (9) for... Agent: Van Dyke, Gardner, Linn & Burkhart, LLP

20080260561 - Hermetic compressor with internal thermal insulation: A hermetic compressor with internal thermal insulation, comprising: a compression cylinder having one end closed by a valve plate provided with a discharge orifice and having a front face against which is mounted a cylinder cover internally defining a discharge chamber; and a spacing duct having one inlet end hermetically... Agent: Darby & Darby P.C.

20080253899 - Brushless motor driving apparatus and fluid pump: There is disclosed an apparatus for driving a brushless motor comprising a stator including coils of three phases and a magnet rotor placed in the stator. The apparatus including a controller arranged to rotate the magnet rotor by sequentially switching energization of the coils of the phases, detect a position... Agent: Oliff & Berridge, PLC

20080253900 - Gas compressor with pulsation absorber for reducing cylinder nozzle resonant pulsation: A method for reducing pulsation effects associated with the compressor nozzle of a positive displacement compressor system. A pulsation absorber, having a design like that of a side branch absorber, is installed on the cylinder valve cap or on the cylinder nozzle. The acoustic dimensions and placement of the pulsation... Agent: Baker Botts L.L.P. Patent Department

20080253901 - Jet ejector system and method: According to one embodiment of the invention, a jet ejector method includes providing a primary jet ejector having a primary inlet stream, coupling one or more secondary jet ejectors to the primary jet ejector such that all of the jet ejectors are in a cascaded arrangement, bleeding off a portion... Agent: Baker Botts L.L.P.

20080253902 - Fluidic kinetic energy recovery device: A fluidic kinetic energy recovery device, over which a moving body travels, and which has a pumping assembly, in turn having a cavity and a membrane defining a variable-volume chamber with the cavity. The fluidic device has a first plate defining the cavity; a second plate connected to the first... Agent: Nixon & Vanderhye, PC

20080253903 - Vacuum pumps with auxiliary pumping stages: Vacuum pumping apparatus includes a housing, one or more primary pumping stages disposed in the housing, a motor coupled to the primary pumping stages, the motor including at least one stationary surface and at least one moving surface when the motor is energized, the stationary and moving surfaces of the... Agent: Varian Inc. Legal Department

20080253904 - Oil pump pressure control device: A device for reducing friction in a variable flow rate oil pump in which two discharge ports are provided and which uses three rotors while maintaining characteristics identical to the pressure characteristics of a common oil pump. The device is configured from a first discharge passage to an engine, a... Agent: Mcginn Intellectual Property Law Group, PLLC

20080253906 - Magnetically sequenced pneumatic motor: A pneumatic motor having a piston and a magnetically actuated valve. The magnetically actuated valve may be adjacent the piston and, in some embodiments, include a spool valve.... Agent: Patrick S. Yoder Fletcher Yoder

20080253905 - Molten metal pump: A molten metal pump includes an impeller, a pump base housing at least partially enclosing the impeller, a shaft connected to the impeller, a motor connected to the shaft, a motor mount plate for supporting the motor; and a post for connecting the motor mount plate to the pump base... Agent: Fay Sharpe LLP

20080253907 - Cooling of stator for compressor: Compressor comprising a housing (1a, 1b) and with at least one partly electric-motor-driven impeller (3) arranged on a central shaft (5). The invention is characterized in that the impeller (3) is provided with a tubular part (6) surrounding the central shaft (5), and also in that a tubular carrier (2)... Agent: Schwegman, Lundberg & Woessner, P.A.

20080253908 - Washer fluid pump: A washer fluid pump (2) for a windshield washer system (3) of a motor vehicle has ventilation ducts (25, 25′) which are arranged in a housing (17) parallel to the longitudinal axis. The ventilation ducts (25, 25′) open out behind bulkheads (21, 22) which are likewise arranged parallel to the... Agent: Baker Botts L.L.P. Patent Department

20080253909 - Refrigerant compressor: The present invention provides a refrigerant compressor which may assure excellent reliability while using low-viscosity refrigerant. The refrigerant compressor is characterized in that the viscosity of oil stored in hermetic container ranges from VG3 to VG8, and the boiling component at 350 C or over is not less than 10%... Agent: Ratnerprestia

20080253910 - Pressure wave generator: A pressure wave generator (40) for driving one or more cryogenic refrigerator systems. The pressure wave generator (40) comprises a housing with one or more inlet/outlet ports (57,58) through which generated pressure waves of gas may pass through to drive a cryogenic refrigerator system or systems connected to the inlet/outlet... Agent: Dann, Dorfman, Herrell & Skillman

20080253911 - Pumping cassette: A pump cassette is disclosed. The pump cassette includes housing. The housing includes at least one fluid inlet line and at least one fluid outlet line. Also, the cassette includes at least one reciprocating pressure displacement membrane pump within the housing. The pressure pump pumps at least one fluid from... Agent: Deka Research And Development Corporation C/o Wolf, Greenfield & Sacks, P.C.

20080253912 - Pumping cassette: A pumping cassette, the cassette includes a housing. The housing includes at least one fluid port and at least one air vent port. The air vent port vents a fluid source outside the housing. The pumping cassette also includes at least one reciprocating pressure displacement membrane pump within the housing.... Agent: Deka Research And Development Corporation C/o Wolf, Greenfield & Sacks, P.C.

20080247879 - Cooling fan module for a motor vehicle: A cooling fan module for a motor vehicle has a first fan motor which is used to drive a first cooling fan and a second fan motor which is used to drive a second cooling fan. A control unit (6, 13) is associated with the first fan motor (2, 11),... Agent: Baker Botts L.L.P. Patent Department

20080247880 - Systems and methods for reducing pump downtime by determining rotation speed using a variable speed drive: Systems and methods for using variable speed drives to restart downhole submersible pump motors. In one embodiment, a downhole pump is controlled using a variable speed drive that includes a control system configured to detect interruptions in the operation of the pump system. After an interruption that requires the restart... Agent: Law Offices Of Mark L. Berrier

20080247881 - Jet pump apparatus: A jet pump apparatus for mixing a higher pressure gas from a higher pressure gas supply and a lower pressure gas from a lower pressure gas supply, includes an inlet section, an outlet section, a diffuser section and a mixing section, the inlet section including a higher pressure gas inlet... Agent: Greenlee Winner And Sullivan P C

20080247882 - Split-pressure dual pump hydraulic fluid supply system for a multi-speed transmission and method: A split-pressure, dual-pump system for supplying hydraulic fluid to a multi-speed transmission is provided. The system includes a low-pressure work circuit operatively connected to a fixed displacement pump, and a high-pressure work circuit operatively connected to a variable displacement pump. The system also includes a regulator valve fluidly coupled to... Agent: General Motors Corporation Legal Staff

20080247883 - Displacement control valve for variable displacement compressor: A displacement control valve for a variable displacement compressor has a control passage, a valve hole formed in the control passage, a first shaft portion including a valve body, and a connecting portion connected to the end portion of the valve body. The control passage is connected to a crank... Agent: Morgan & Finnegan, L.L.P.

20080247884 - Portable air pump: A portable air pump includes a tubular body, a barrel, a piston mechanism, a head, and a dispensing head. Tubular body has upper cover having air inlet holes and sealed bottom cover. Barrel has air passage running through along its axis direction. Piston, having center hole and through hole, and... Agent: Rabin & Berdo, PC

20080247885 - West compression apparatus and method: This wet compression invention with a vaporizable fluid mist demonstrates major performance improvements over the relevant art in achieving a high degree of saturation, providing sensible cooling, strongly reducing the temperature increase due to compression work, reducing excess diluent air flow for downstream combustion, reducing compression noise, and increasing the... Agent: Ostrolenk Faber Gerb & Soffen

20080247886 - Hermetic compressor: A hermetic compressor has a hermetic container storing an oil, and a compressing element accommodated in the hermetic container and compressing a refrigerant gas; the compressing element has a compressing chamber, a cylinder forming the compressing chamber, a piston inserted into the cylinder and reciprocating, and a suction muffler (140)... Agent: Wenderoth, Lind & Ponack L.L.P.

20080247887 - Pricing method and system: A pricing method and system. The method includes receiving by a computing system data associated with a business. The data comprises a first list of negotiated pricing rates and associated skills, a second list of requesters, and a third list of suppliers. The computing system, receives business factors data. The... Agent: Schmeiser, Olsen & Watts

20080247888 - Hermetic compressor: A hermetic compressor has a bipolar permanent magnet motor where permanent magnet (124) is disposed in rotor core (123). Hollow bore (131) is disposed at the end on the compressing element (105) side of rotor core (123), and main bearing (111) extends into bore (131). The thickness of rotor core... Agent: Ratnerprestia

20080247889 - Refrigeration device with improved dc motor: A miniature cooling device includes numerous improvements capable of increasing the reliability and useful lifetime of the device, as well as improving electrical power to cooling power conversion efficiency. The improvements include a unitary DC motor shaft design that incorporates a unitary mass flywheel into the shaft element and provides... Agent: Edward L. Kelley Dba Invention Management Associates

20080247891 - High-pressure pump piston/cylinder unit: A high-pressure pump piston/cylinder unit includes a pump cylinder having a piston which oscillates therein provided in a housing. The piston is connected to a controlled drive to vary a suction and compression stroke volume of the pump cylinder. The pressure of the fluid drawn into the pump cylinder is... Agent: Cohen, Pontani, Lieberman & Pavane LLP

20080247890 - Recriprocating compressor: A highly reliable reciprocating compressor works efficiently with less energy, and produces smaller vibrations. This reciprocating compressor includes a crankshaft, a block, a piston, a connecting rod, and a balancing weight. The cylinder is placed offset such that an axis line thereof and an axis line of the main shaft... Agent: Wenderoth, Lind & Ponack L.L.P.

20080247892 - Liquid transfer device and suction unit: A liquid transfer device that includes: a plurality of reservers that each store therein a liquid; a plurality of elastic tubes that are linked to the reservers and retained by a tube guide; a rotation axis that is retained to be able to rotate; and a tube depressing member whose... Agent: Harness, Dickey & Pierce, P.L.C

20080247893 - High compression downhole pump: A downhole pump has a barrel and a plunger. The barrel has a first one-way valve and the plunger has a second one-way valve. The plunger is of the box end type. The pump prevents or minimizes gas lock by achieving high compression in the compression chamber between the two... Agent: Decker, Jones, Mcmackin, Mcclane, Hall & Bates, P.C.

20080240928 - Refrigerant suction structure in fixed displacement type piston compressor, and operation control method in fixed displacement type piston compressor: An introduction passage of rotary valve has outlets for feeding out refrigerant in a suction pressure zone toward each of compression chambers. A switch portion in a shutoff state shuts off a portion of the suction pressure zone within a compressor from the outlets of the introduction passage. The switch... Agent: Knoble, Yoshida & Dunleavy

20080240929 - Pumping cassette: A sensor apparatus and sensor apparatus system for use in conjunction with a cassette, including a disposable or replaceable cassette. In some embodiments, the cassette includes a thermal well for permitting the sensing of various properties of a subject media. The thermal well includes a hollow housing of a thermally... Agent: Michelle Saquet Temple

20080240930 - Method and system for optimizing downhole fluid production: A method and system for pumping unit with an elastic rod system is applied to maximize fluid production. The maximum stroke of the pump and the shortest cycle time are calculated based on all static and dynamic properties of downhole and surface components without a limitation to angular speed of... Agent: Andrews & Kurth, L.L.P.

20080240931 - Method for determining faults during the operation of a pump unit: The invention relates to a method for determining faults during the operation of a pump unit. At least two electric variables that determine the electric output of the motor and at least one fluctuating hydraulic variable of the pump are detected. The detected values or values formed from said variables... Agent: Mcglew & Tuttle, PC

20080240932 - Pump, real-time, general and incremental condition diagnosis: A method and system for diagnosing a condition of a positive displacement hydraulic delivery system or pump. The method includes determining a reference polar guide of torque and/or velocity and/or energy profile(s) of the pump from a back electromotive force of a motor driving the pump, determining an angular displacement... Agent: Frommer Lawrence & Haug

20080240933 - Two-pump air compressor: A compressor system is disclosed utilizing a first pump driven by an A/C motor and a second pump driven by a D/C motor. A gauge is provided which measures pressure from the system. The gauge utilizes a rotatable bezel which allows an operator to selectively choose the output pressure of... Agent: Harness, Dickey & Pierce, P.L.C

20080240934 - Liquid pressure-feed device: A liquid pressure-feed device is provided wherein a working fluid discharge port can be connected to a liquid generation source side through an external pipe or can be connected to a liquid inlet port of a closed vessel without going through an external pipe. A closed vessel outer opening for... Agent: Kenyon & Kenyon LLP

20080240935 - Balanced variable displacement vane pump with floating face seals and biased vane seals: A vane pump assembly including a cam ring having an elliptical inner bore defining a hydraulic pumping chamber, the pumping chamber having an interior camming surface. The cam ring defines ports for admitting fluid into the pumping chamber. A rotor, within the cam ring, defines a plurality of radial vane... Agent: Edwards Angell Palmer & Dodge LLP

20080240936 - Portable air compressor: A wheelbarrow compressor is disclosed that includes a base and a first reservoir and a second reservoir having bottom portions located at opposite sides of the base. The base is located below an uppermost surface of the first and the second reservoirs. A handle assembly is attached with a first... Agent: Tti/brinks Hofer Gilson & Lione

20080240937 - Two stage reciprocating compressor and refrigerator having the same: A two stage reciprocating compressor includes a casing. A first compressing unit is disposed in the casing and includes a first piston and a first cylinder, the first compressing unit being driven by a reciprocating motor to linearly reciprocate the first piston in the first cylinder to suck in and... Agent: Greenblum & Bernstein, P.L.C

20080240938 - Radial rotary engine with energy storage: The present invention is directed to a rotary engine power transmission system for use in vehicular as well as other applications. The power system includes a rotary engine or pump, which may be pneumatic or hydraulic in configuration. The power system includes components whose purpose is to convert rotational force... Agent: Merek, Blackmon & Voorhees, LLC

20080240939 - Compressor having a high pressure slide valve assembly: A compressor having a high pressure slide valve assembly is disclosed. The slide valve assembly includes: a volume slide valve mechanism, the mechanism slidably movable to control compressor volume ratio and power input to the compressor. The assembly also includes a capacity slide valve mechanism that is in operational association... Agent: Whyte Hirschboeck Dudek S C

20080240940 - Compressor improvements: c

20080240941 - Vehicular oil pump control apparatus: A control apparatus for controlling two oil pumps which are provided on a vehicle wherein the two oil pumps are selectively driven by respective different drive power sources such that one of the two oil pumps is operated while the other oil pump is held at rest, the control apparatus... Agent: Oliff & Berridge, PLC

20080240942 - Diaphragm pump for pumping a fluid: A diaphragm pump for pumping a fluid, includes a flexible diaphragm which contains magnetically hard or soft particles and is actuated by an electromagnetic actuator. The diaphragm pump having a housing having an interior space containing two pump chambers which are separated by the diaphragm, and in that the diaphragm... Agent: Davidson, Davidson & Kappel, LLC

20080240943 - Air pump: An air pump has a bracket, a motor, a transmission device and pneumatic cylinder assembly. The bracket is formed from sheet metal and has a backplate, two side plates formed on the backplate and two top plates formed respectively on the side plates. The motor is mounted on the transmission... Agent: Rabin & Berdo, PC

20080240944 - Air-operated pump: An air-operated pump for pumping material such as oil or grease. The pump is powered by an air motor which operates to reciprocate a piston and plunger to effect a pumping action. The air motor is modular in that the air valve system is contained in a single housing fastened... Agent: Senniger Powers LLP

20080240945 - Motor/pump unit: A motor/pump unit, in particular for a servo-steering system, includes a pump housing and an intermediate housing. A pump having a first pump shaft is held in the pump housing. The pump housing and the intermediate housing are connected with each other via a flange, and the first pump shaft... Agent: Macmillan, Sobanski & Todd, LLC

20080240946 - Microchemical chip: A microchemical chip comprises a plate-shaped substrate, with a channel formed on a surface of the substrate through which a fluid flows. A fluid storage section for storing the fluid communicates with the channel at a starting end of the channel. A fluid discharge section communicates with the channel at... Agent: Oliff & Berridge, PLC

20080240947 - Implantable centrifugal blood pump with hybrid magnetic bearings: A pump for pumping sensitive fluids, such as blood, has no mechanical contact between the impeller and any other structure.... Agent: Kirton & Mcconkie

20080240948 - Device for containing catastrophic failure of a turbomolecular pump: A device for containing the catastrophic failure of a vacuum pumping system is described. The vacuum pumping system includes a turbo-molecular pump (TMP) configured to be coupled to a vacuum processing system at an inlet end. The TMP includes a longitudinal axis substantially parallel to an axis of rotation of... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080240950 - Compressor improvements: d

20080240949 - Zero emissions reciprocating pump: A sealing system for a pump having a plunger includes a housing having an internal chamber adapted to receive a portion of the plunger. Primary and secondary seals are located within the internal chamber and adapted to sealingly engage the plunger. The primary seal communicates with the fluid being pumped.... Agent: Harness, Dickey & Pierce, P.L.C

20080240951 - System and method operable to prevent tubing displacement within a peristatltic pump: Embodiments to the present invention provide a peristaltic pump. This peristaltic pump includes a flexible flow path, an exterior casing, an elastomeric member, and a number of rollers driven by a motor. The exterior casing and elastomeric member have a first and second annular recess, respectively. An annular flow path... Agent: Alcon

20080240952 - High-pressure pump, in particular for a fuel injection system of an internal combustion engine: A high-pressure pump having a pump element a pump piston driven in a reciprocating motion and defining a pump work chamber into which fuel is aspirated from a fuel inlet during the intake stroke via an inlet valve, and from which fuel is positively displaced via an outlet valve during... Agent: Ronald E. Greigg Greigg & Greigg P.l.l.c.