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| Number | Title | Issue Date |
| 8152478 | Compressor with controlled capacity A double cylinder compressor with controlled capacity having a capacity switch device, and a reservoir having an inlet and two outlets which are connected with an upper and a lower cylinder of the double cylinder compressor through the capacity switch device. The ca... | 04/10/2012 |
| 7641450 | Transporting method and transporting facility for easily polimerizable material The present invention aims to provide a transfer method and a transfer facility for an easily polymerizable substance that limits standing retention of the easily polymerizable substance in the feed pump, etc., and the generation and adherence of solid matter such a... | 01/05/2010 |
| 7371053 | Two-stage hydraulic pump A two-stage hydraulic pump includes a rotor, a ring, and a plurality of rollers disposed in slots formed on the rotor. The pump has two inlet ports and two outlet ports, which are disposed inwardly and outwardly, respectively, of the rollers. A valve mechanism is in... | 05/13/2008 |
| 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 |
| 7310965 | Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger... | 12/25/2007 |
| 7278833 | Hybrid compressor A hybrid compressor includes a first compression mechanism, which is driven by a first drive source, a second compression mechanism, which is driven by a second drive source, and a communication path communicating between a suction chamber of the first compression m... | 10/09/2007 |
| 7231910 | Method for setting the feed rate of a fuel pump unit, which sucks up fuel from a fuel tank, and fuel pump unit for the method The invention relates to a method for setting the feed rate of a fuel pump unit, which sucks up fuel from a fuel tank 8, as a function of the feed pressure, which is built up by the fuel pump unit, in an outlet 25 of the fuel pump unit, which outlet le... | 06/19/2007 |
| 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 |
| 7159412 | Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger... | 01/09/2007 |
| 7073346 | Compressor head, internal discriminator, external discriminator, manifold design for refrigerant recovery apparatus and vacuum sensor The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger... | 07/11/2006 |
| 7065469 | Manufacturing apparatus and method for predicting life of a manufacturing apparatus which uses a rotary machine A manufacturing apparatus which includes a rotary machine, includes: a plurality of accelerometers configured to measure diagnosis time series data attached to the rotary machine at locations where variations of the rotary machine are different; a frequency analysis... | 06/20/2006 |
| 7040417 | Drilling systems The present invention discloses, in certain aspects, systems and methods for producing cyclical impacts and, in certain aspects for moving a drilling apparatus for drilling a borehole in a formation, the system in certain embodiments including a housing with a longi... | 05/09/2006 |
| 7008198 | Cam operated pump having lost motion shuttle A peristaltic piston pump driven by a dedicated pump cam disposed on a camshaft of an engine. A plurality of valve-opening cams are disposed along the camshaft. The pump cam has a plurality of lobes equal in number to the number of valve cams and each pump lobe is d... | 03/07/2006 |
| 6963802 | Method of coordinating and stabilizing the delivery of wind generated energy The invention relates to a method of coordinating and stabilizing the delivery of wind generated power, such as to a power grid, so as to avoid sudden surges and spikes, despite wind speed fluctuations and oscillations. The method preferably uses a plurality of wind... | 11/08/2005 |
| 6960069 | Arrangement structure of swash plate hydraulic pump hydraulic pump An arrangement structure of a swash plate hydraulic pump which can be used in a wide range of construction equipment and industrial vehicles and is small in size, simple in structure, and inexpensive is provided. For this purpose, an arrangement structure of a swash... | 11/01/2005 |
| 6905317 | Oil pump apparatus An oil pump apparatus includes a body, a first rotor and a second rotor disposed in the body so as to be able to rotate and a regulator valve mechanism for regulating the pressure of oil discharged to portions of an engine, wherein the regulator valve mechanism is d... | 06/14/2005 |
| 6592302 | Pneumatic transmission system and blower unit therefor A blower unit is provided which is suitable for use in a pneumatic transmission system. The blower unit includes a housing having at least two inlet/outlet openings through which air can flow. Disposed within the housing are one or more blower motors, eac... | 07/15/2003 |
| 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 |
| 6561768 | Device for supplying liquids, in particular, fuel A device for supplying liquids, in particular, fuel, has a first geared supply pump (30) with a pair of meshed gear wheels (41, 43) in a pump chamber, of which one is rotatably driven by means of a drive shaft (38). In the pump chamber (40), an inlet open... | 05/13/2003 |
| 6478551 | Gas compressor having enlarged discharge chamber An air conditioning compressor is equipped with an oil separator for separating high-pressure refrigerant gas and lubrication oil into a gas component and an oil component. The compressor's casing has a barrel portion surrounding an outer portion of the c... | 11/12/2002 |
| 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 |
| 6196806 | Continuously variable transmission Continuously variable transmission having a hydraulically adjustable transmission ratio, includes a hydraulic circuit that interacts with a reservoir, at least two pumps for pumping hydraulic medium from the reservoir to an outflow channel and adjustor wh... | 03/06/2001 |
| 6106245 | Low cost, high pumping rate electrostatically actuated mesopump A mesopump having a plurality of elementary cells. The cells each have a body forming a cavity having an electrode on one curved surface and a second surface facing the electrode. Electrical connections selectively energize the electrode. A diaphragm is m... | 08/22/2000 |
| 6053702 | Portable water pump having a pressure control circuit with a bypass conduit A booster water pump for increasing source water pressure to a high water pressure for industrial use, has an elongated tubular hollow cylinder having both ends closed with a cylinder inlet port in one end, and a cylinder outlet port to permit the cylinde... | 04/25/2000 |
| 6024547 | Power-variable compressor and air conditioner using the same A multi-rotor type compressor including plural compression elements each of which includes a rotor eccentrically rotating in a cylinder and a vane which is in sliding contact with the outer peripheral surface of the rotor and partitions the inside space o... | 02/15/2000 |
| 5836750 | Electrostatically actuated mesopump having a plurality of elementary cells A mesopump having a plurality of elementary cells and a method of pumping fluids using the mesopump. The cells each have a body forming a cavity having upper and lower electrodes with curved surfaces facing the other electrode. Electrical connections sele... | 11/17/1998 |
| 5704768 | Motor pump family of centrifugal pumps A motor pump group has a plurality of centrifugal pumps of the same nominal port diameter including a plurality of impellers having stepwise greater outside diameters for stepwise higher pump heads, and a plurality of respective motors for actuating the p... | 01/06/1998 |
| 5676528 | Motor pump family with single stage and multiple stage impellers A motor pump group has a plurality of centrifugal pumps of the same nominal port diameter including a plurality of impellers having stepwise greater outside diameters for stepwise higher pump heads, and a plurality of respective motors for actuating the p... | 10/14/1997 |
| 5600961 | Refrigeration system with dual cylinder compressor An energy-efficient refrigeration system includes a dual cylinder compressor and a compressor controller coupled to the compressor to control compressor capacity by selection of a predetermined refrigerant flow path through the compressor. The dual cylind... | 02/11/1997 |
| 5577390 | Compressor for single or multi-stage operation In a positive displacement compressor having a plurality of banks, operation can be multi-staged or single staged. Single stage operation can be of a single bank or plural banks in parallel. Switch-over between modes of operation is under the control of a... | 11/26/1996 |
| 5486854 | Ink jet recording apparatus An ink jet recording apparatus for forming a record by discharging ink from a recording head onto a recording material, has a tube pump for ink discharge recovery, by suction or pressurization, through deformation, with pressure rollers, of plural tubes c... | 01/23/1996 |
| 5328337 | Guided vanes hydraulic power system A hydraulic power system comprising a stator (1) having a non-circular cavity with inner wall (2) and a rotor (3) rotatably mounted in the cavity. The rotor (3) has a plurality of radially extending slots formed in its circumference and a vane (18) slidab... | 07/12/1994 |
| 5228838 | Method for the evacuation of a low-vacuum chamber and of a HGH-vacuum chamber, as well as a high-vacuum apparatus for the practice thereof For the evacuation of a low-vacuum chamber (4) and of a high-vacuum chamber (5), two pump trains (6, 7) are provided, each consisting of a vacuum pump unit (8, 9) and a forepump unit (10, 11). The forepump unit (11) of the pump train (7) of the high-vacuu... | 07/20/1993 |
| 5178520 | Double centrifugal pump with single casing and adapter insert A centrifugal or rotary double pump has a singular circular casing surmounting two motors driving individual rotors within the casing. Above a flat side of the casing is attachable to the device serviced by the double pump and receives an insert defining ... | 01/12/1993 |
| 5135361 | Pumping station in a water flow system A water flow system for collecting and discharging waste water, storm water and the like includes a water pumping station into which water is delivered through an inflow main and from which water is pumped through a water discharge main. The pumping stati... | 08/04/1992 |
| 5088898 | Reciprocating pump A reciprocating pump comprises a plurality of pump sections, each pump section having a suction inlet and a discharge outlet, the inlets all connecting with a common passageway through which the pumped fluid is supplied and the outlets all connecting with... | 02/18/1992 |
| 5042521 | Switching apparatus for suction system in a vacuum pump A piston and a plurality of passages (first to fourth or fifth passages) are provided in a cylinder for reciprocation, which piston has a recessed portion formed in the central part thereof, so that the suction system of two suction pumps can automaticall... | 08/27/1991 |
| 4854822 | Series impeller air pump for liquid sprayer A high volume, low pressure impeller apparatus is provided for the spraying of liquids having a wide range of viscosities. The use of two serially interconnected impeller blowers enables the spraying of both stains and latex paints while still achieving f... | 08/08/1989 |
| 4850806 | Controlled by-pass for a booster pump A method and apparatus for evacuating an enclosed chamber which utilizes a tandem connection of a booster pump and a mechanical pump in a manner to maximize the rate of evacuation of the chamber but without exceeding the rating of the booster pump and dam... | 07/25/1989 |
| 4797834 | Process for controlling a pump to account for compressibility of liquids in obtaining steady flow An apparatus and method controls a dual piston pump for a liquid chromatography system so as to pump a flow of solvent through the liquid chromatography column at a constant flow rate and with a solvent composition which is substantially equal to the desi... | 01/10/1989 |
