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| Number | Title | Issue Date |
| 8182240 | Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments... | 05/22/2012 |
| 8177521 | System and method for monitoring and controlling oil return to compressor A system and method for monitoring and controlling oil return to a compressor, characterized by monitoring and controlling oil level, oil temperature, and compressor outlet pressure, so as to determine whether the oil level is lower than a predetermined level thresh... | 05/15/2012 |
| 8128379 | Temperature management system for a 2CD type air compressor A temperature management system for an air compressor includes a plurality of cooling fans coupled to an intercooler of the air compressor; an electrical relay comprising a coil and contacts operated by the coil; and a temperature switch coupled to the coil of the e... | 03/06/2012 |
| 8123493 | Screw compressor A screw compressor is disclosed wherein a pair of rotor shafts are disposed horizontally and an oil sump is formed at the bottom of a bearing casing which accommodates bearings for supporting the rotor shafts, a bearing lower portion being soaked into oil present in... | 02/28/2012 |
| 8113792 | Compressor unit with pressure compensator A compressor unit is provided. The compressor unit includes a compressor and a motor enclosed by a common casing in a sealless manner. A stator of the motor is cooled by a cooling system. A partition separates a process fluid from a cooling fluid in an area of the s... | 02/14/2012 |
| 8096781 | Hydraulic pump system with reduced cold start parasitic loss A machine hydraulic pump system including at least one hydraulic pump driven to pressurize hydraulic fluid. A drain port is in fluid communication with an interior lubricating cavity of the pump. A selectively activatable flow control member is in flow-controlling r... | 01/17/2012 |
| 8075283 | Oil balance system and method for compressors connected in series A compressor system includes a first compressor, which has a first low side oil sump, in a first shell and a second compressor, which has a second low side oil sump, in a second shell. The first and second compressors are connected in series. There is an oil transfe... | 12/13/2011 |
| 8021125 | Hermetic compressor A hermetic compressor includes a housing accommodating a motor and a compressing mechanism driven by the motor, refrigerating machine oil, which is pooled in the housing, for lubricating the compressing mechanism, refrigerant gas sealed into the housing and to be re... | 09/20/2011 |
| 7762789 | Compressor with flow control sensor A compressor discharges a flow of compressed fluid at a predetermined temperature. The compressor includes a sensor positioned to measure a first temperature indicative of the temperature of the compressed fluid, a coolant source, a cooler positioned to receive a fi... | 07/27/2010 |
| 7651322 | Oil balance system and method for compressors connected in series A compressor system includes a first compressor, which has a first low side oil sump, in a first shell and a second compressor, which has a second low side oil sump, in a second shell. The first and second compressors are connected in series. There is an oil transfe... | 01/26/2010 |
| 7316541 | Engine-powered air compressor with a controller for low oil condition An air compressor with an internal combustion engine having an engine oil sump, a compressor driven by the internal combustion engine and having a compressor oil sump, and a controller coupled to the internal combustion engine. The controller is configured to halt t... | 01/08/2008 |
| 7290990 | Short reverse rotation of compressor at startup In a method of operating a scroll or screw compressor at startup, the compressor is rotated in reverse for a brief period of time. The compressor is of a type that does not compress liquid when rotated in reverse. The purpose is to boil off the liquid refrigerant fr... | 11/06/2007 |
| 7278408 | Returnless fuel system module A returnless fuel system module includes a fuel pump in a fuel pump cavity, a fuel pressure regulator in a fuel pressure regulator cavity, first and second transfer passages therebetween, and a heat exchanger integrally formed in the housing in thermally conductive ... | 10/09/2007 |
| 7270137 | Apparatus and method of securing a workpiece during high-pressure processing An apparatus is disclosed for performing high-pressure processing of a workpiece having a top face and a bottom face. The apparatus comprises a processing chamber and a holder for securing the workpiece within the processing chamber so that a substantial portion of ... | 09/18/2007 |
| 7225820 | High-pressure processing chamber for a semiconductor wafer A processing chamber having an improved sealing means is disclosed. The processing chamber comprises a lower element, an upper element, and a seal energizer. The seal energizer is configured to maintain the upper element against the lower element to maintain a proce... | 06/05/2007 |
| 7204678 | Method for controlling the oil recirculation in an oil-injected screw-type compressor and compressor using this method The invention relates to a method for controlling the oil recirculation in an oil-injected screw-type compressor which, between the oil separator (10) and the compressor element (1), comprises an oil recirculation conduit (17) in which an oil co... | 04/17/2007 |
| 7186093 | Method and apparatus for cooling motor bearings of a high pressure pump A system for cooling the bearings and motor in a pump assembly used for circulating supercritical fluid is disclosed. The system uses a pressurized coolant fluid that can be substantially pure CO2. The pressure difference between the circulating supercrit... | 03/06/2007 |
| 7165949 | Cavitation noise reduction system for a rotary screw vacuum pump A rotary screw vacuum pump system includes a vacuum bypass system, which communicates with a first closed cell formed by the rotor system. An air bypass valve within an air communication conduit is controlled by a solenoid valve that operates in response to a pressu... | 01/23/2007 |
| 7163086 | Lubrication system A lubrication system comprises a reservoir for lubricant, lubricant delivery means to deliver lubricant to at least one component to be lubricated, an injector associated with each component, a control system to control the opening and closing of each injector and s... | 01/16/2007 |
| 7114913 | Lubricant-cooled gas compressor In a lubricant-cooled gas compressor (10) the temperature of separated lubricant returned to the air-side (11) is monitored by a thermostatically controlled restrictor valve (22) which minimises the flow of returned lubricant when temperature is... | 10/03/2006 |
| 7108491 | High pressure pump A piston (6) of a piston pump unit (2), which can be displaced in a translatory manner, is guided in a cylinder bore (7). The piston (6) is driven by a crank drive (13) comprising an eccentric element (15) which is arranged ... | 09/19/2006 |
| 7097435 | Device for draining and recharging a hermetic compressor with oil A method of draining and recharging a hermetic compressor with oil using a drainage assembly mounted in the compressor housing. The assembly includes a tube having a valve mounted at one end thereof with the second end of the tube located in the oil sump of the hous... | 08/29/2006 |
| 7094037 | Oil-cooled compressor An oil-cooled screw compressor which can maintain the discharge temperature of discharge gas at an appropriate level is provided. The oil-cooled screw compressor comprises a compressor body, an oil separation/recovery unit disposed in a discharge path extending from... | 08/22/2006 |
| 7083395 | Pump system for pumping liquefied gases Under one aspect of the present invention, a liquefied gas pump assembly is coupleable to a source of liquefied gas. A cooling assembly is positioned generally adjacent to a pump module. The cooling assembly has a converging pump-head-receiving aperture, a fluid inl... | 08/01/2006 |
| 7081728 | Apparatus for controlling heat generation and recovery in an induction motor An induction motor system comprising an induction motor, equipped with a heat recovery and water pumping apparatus and an apparatus for controlling the electrical efficiency and resulting heat generation of the induction motor. The motor is adapted to be coupled to ... | 07/25/2006 |
| 7059837 | Variable speed oil-injected screw compressors The invention relates to the use of variable speed control of the cooling fan on a variable speed oil-injected screw compressor. A screw compressor (11) comprises at least one stage of compression, each with a pair of rotors, variable speed compressor drive m... | 06/13/2006 |
| 7052249 | Air/oil separating tank—thermostatic valve—minimum pressure valve—oil cooling radiator—compressed air cooling radiator group A group is provided for a compressed air distribution unit of the type including an intake regulator, an oil bath-screw type compressor, an air/oil separating tank, a minimum pressure valve, an air cooling radiator, a pressurized air collection tank, a thermostatic ... | 05/30/2006 |
| 7033144 | Cooling fan for a screw compressor drive motor A oil-cooled type screw compressor of the present invention includes a compressor main unit storing a pair of male and female screw rotors driven by a motor and meshing with each other, a cooling fan provided independently to the motor for blowing air toward the mot... | 04/25/2006 |
| 7025175 | Vent mechanism An vent mechanism comprising an upper housing, a lower housing, a diaphragm comprising a diaphram contact contained between the housings, an upper contact, an insulator insulating the upper contact from the upper housing, and an internal ground wire between the diap... | 04/11/2006 |
| 7011183 | Suction oil injection for rotary compressor An apparatus and system for immediately lubricating a compressor within a compressor system using a suction oil line apparatus. The compressor system comprises a compressor, a power source for operating the compressor, a tank capable of storing oil therein, a conven... | 03/14/2006 |
| 7004120 | Opposed piston engine A four-stroke opposed piston engine includes a rotating cylinder with a circumference and an aperture defined through the circumference, first and second opposing pistons, optional first and second opposing cylindrical spacers, first and second opposing piston caps,... | 02/28/2006 |
| 7000734 | Lubricating device A rod body (30) is formed of magnetostrictive material and includes one end portion (30a) fixed, and a piston (35) is fixed to the other end portion (30b) of the rod body (30). The piston (35) is slidably dispo... | 02/21/2006 |
| 6910341 | Temperature control apparatus and method of operating the same A temperature control unit and a method of operating a temperature control unit. The temperature control unit including a refrigeration circuit enclosing a refrigerant and having a compressor, a condenser, and an evaporator coil. The method including providing a fir... | 06/28/2005 |
| 6889665 | High pressure pump for a fuel system of an internal combustion engine, and a fuel system and internal combustion engine employing the pump A high-pressure piston pump for a fuel system of an internal combustion engine, includes a housing, a piston, which defines a working chamber, and drive shaft having at least one crank section and supported in the housing by means of at least one shaft bearing. A pi... | 05/10/2005 |
| 6848889 | Oil utilized as motor protector trip for scroll compressor A scroll compressor has lubricant flow which communicates lubricant onto a motor protector when adverse conditions are present causing the motor protector to trip the motor and stop further rotation. The lubricant is returned to an oil sump through a normal return p... | 02/01/2005 |
| 6814033 | Temperature sensitive fluid type fan coupling apparatus A temperature sensitive fluid type fan coupling apparatus obtains linear characteristics without spoiling the drag performance. The fan coupling apparatus has a sealed case divided by a partition into an oil reservoir chamber and a torque transfer chamber. A valve i... | 11/09/2004 |
| 6748923 | Injection system for an internal combustion engine and method for regulating and/or bleeding of said system An injection system for an internal combustion engine comprises a valve arrangement (26), connected to an inlet (24) to a high pressure pump (8), which regulates the flow of fuel for lubricating and cooling the high pressure pump (8) and ... | 06/15/2004 |
| 6695602 | Bacterial growth inhibition in a circulation system comprising a compressor The present invention relates to a compressor (1) that has an associated coolant circulation system (1, 4, 6, 8, 11, 13), and also to a method of maintaining a low bacteria content in the coolant circulating system (1, 4, 6, 8, 11, 13), in which method ga... | 02/24/2004 |
| 6648607 | Scroll compressor with oil reservoir associated with motor protector A scroll compressor has lubricant flow which communicates lubricant onto a motor protector causing the motor protector to trip the motor and stop further rotation when a predetermined lubricant temperature is reached. The motor protector is surrounded by ... | 11/18/2003 |
| 6632077 | Hybrid bearing arrangement for centrifugal compressor A centrifugal compressor that includes a low speed shaft connected to a drive motor and a high speed shaft containing an impeller. The high speed shaft is coupled to the low speed shaft by a gear train. The low speed shaft is supported by hydrodynamic, oi... | 10/14/2003 |
