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| Number | Title | Issue Date |
| 8157545 | Hermetic compressor and method of manufacturing the same A hermetic compressor includes a hermetic container arranged to store lubricating oil, a motor element accommodated in the hermetic container, an oil-feeding mechanism arranged to carry the lubricating oil, and a centrifugal pump arranged to carry the lubricating oi... | 04/17/2012 |
| 8152492 | Linear rod pump apparatus and method An apparatus and method for pumping fluids, such as water and/or hydrocarbons, from a subterranean formation or reservoir, include a linear rod pump having a mechanical rack and pinion drive arrangement, adapted for attachment to a pumping mechanism, such as the pol... | 04/10/2012 |
| 8133041 | Subsea chemical injection system and pumps therefor A high pressure pump for use in the injection of liquid chemicals into subsea oil or gas wells, and intended to be positioned in the subsea environment adjacent to the wellhead, comprises a piezoelectric actuator (19) for reciprocating a plunger (22) w... | 03/13/2012 |
| 8128382 | Compact dual rocking piston pump with reduced number of parts A dual rocking piston pump which includes a first piston with a first connecting rod eccentrically mounted to a rotor shaft and a second piston with a second connecting rod eccentrically mounted to the rotor shaft. The rotor shaft passes through a first bearing and ... | 03/06/2012 |
| 8118571 | Actuator assembly An actuator assembly for generating a fluid pressure and applying the fluid pressure to a first device. The actuator assembly comprises a first fluid chamber and a first piston disposed adjacent to the first fluid chamber, a second fluid chamber and a second piston ... | 02/21/2012 |
| 8070464 | Retention system While ceramic materials possess properties that make them suitable for use in fuel system components, they tend to be susceptible to failure when exposed to tensile stresses. The retention system described herein helps to reduce the tensile stresses experienced by a... | 12/06/2011 |
| 8021130 | Apparatus and method for handling fluids at nano-scale rates Apparatus and Method for Handling Fluids at Nano-Scale Rates. A linear displacement pump produces non-pulsatile liquid flow rates as low as the nl/mm range. The pump includes a servo motor, a gear reduction, a lead screw, a linear stage, a barrel, and a plunger exte... | 09/20/2011 |
| 7963751 | Electromagnetic reciprocating fluid device A magnetic armature is attracted and driven by a magnetic force which is intermittently generated between magnetic poles, and a piston reciprocated by being pushed back by a coil spring is not rotated by the coil spring. When the magnetic armature (28) as att... | 06/21/2011 |
| 7942651 | 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 DC motor shaft design that inc... | 05/17/2011 |
| 7942652 | Bi-directional centripetally-powered reciprocating pump A reciprocating liquid or gas pump is driven by bi-directional force. A prime mover causes eccentric weights to rotate, which in turn cause pistons to be driven in linear paths under bi-directional force. This bi-directional force then drives opposing sets of piston... | 05/17/2011 |
| 7938632 | Piston pump with cam follower arrangement A pump primarily for liquid paint includes first and second pistons reciprocable rectilinearly in respective first and second cylinders. The first and second pistons are moved relative to their respective pistons by operation of an A. C. electric motor the rotary ou... | 05/10/2011 |
| 7832994 | Hermetic-type compressor A hermetic-type compressor according to the present invention has a viscous pump part by combining a spiral groove formed on the outer periphery of a main shaft with the inner periphery of a main shaft bearing, and at least one sliding section being in a sliding eng... | 11/16/2010 |
| 7744354 | Fluid pump, a fluid-transfer plate and an inductive sensor for a fluid pump The present invention relates to a fluid pump and a fluid-transfer plate and a sensor for a fluid pump, particularly applicable to linear compressors, for detecting the position of the respective piston and preventing the latter from colliding with the fluid-transfe... | 06/29/2010 |
| 7722337 | Piston compressor cylinder arrangement, particularly for a hermetically enclosed refrigerant compressor The invention concerns a piston compressor cylinder arrangement (1), particularly for a hermetically enclosed refrigerant compressor, with a cylinder body (2) and a cylinder head arrangement (7), the cylinder body (2) having a first front... | 05/25/2010 |
| 7686596 | Hydraulic pressure amplifier A hydraulic pressure amplifier with a housing which has an end face at a low pressure side and an end face at a high pressure side and a circumferential wall between the two end faces, wherein an outlet valve is arranged adjacent the end face on the high pressure si... | 03/30/2010 |
| 7654802 | Reciprocating drive apparatus and method A reciprocating drive apparatus has a driving device and a driven device, one of the devices comprising a reciprocating member mounted for movement along a longitudinal axis. At least one rotary member is coupled to one of the devices and a linear bearing assembly h... | 02/02/2010 |
| 7591638 | Structure for fixing motor stator of reciprocating compressor Disclosed is a structure for fixing a motor stator of a reciprocating compressor, the reciprocating compressor comprising: a frame unit mounted in a casing and elastically supported; a reciprocating motor including an outer stator coupled to the frame unit, an inner... | 09/22/2009 |
| 7556480 | Fluid pump A fluid pump comprising a plurality of piston cylinders (1, 2, 3, 4), wherein each individual cylinder has a piston rod (5, 6, 7, 8) with a piston (9, 10, 11, 12) arranged in the cylinder and a valve housing (13, 14, 15, 16) mounted at th... | 07/07/2009 |
| 7544048 | Universal vibratory pump A vibratory pumping machine including a pumping chamber disposed within a housing for the machine having an inlet tube that is insertable into a container having a liquid therein to withdraw the liquid from the container upon actuation of the pumping mechanism also ... | 06/09/2009 |
| 7497671 | Hermetic compressor By adopting a construction in which a first balance weight is provided at the side end portion of the eccentric shaft portion of the auxiliary shaft portion and a second balance weight is provided at the side end portion of the eccentric shaft portion of the main sh... | 03/03/2009 |
| 7462018 | Air compressor having stable configuration An air compressor includes a supporting base having an arm extended from a plate, and a cylinder housing formed integral with the arm and the plate and having an outlet tube. The cylinder housing includes three or more ducts extended outwardly from the outlet tube a... | 12/09/2008 |
| 7413009 | System and method for pumping fluids The system and method of the present invention includes an electrical to mechanical converter (EMC), such as a motor, and a hydraulic pump-and-cylinder arrangement that is connected to the electrical to mechanical converter for input, and to a sucker rod pump for ou... | 08/19/2008 |
| 7393186 | Multi-stage compressor A multi-stage compressor is disclosed, which comprises: two motion converters driven by one driving shaft and converting a rotary motion to a straight-line reciprocating motion; first and second pistons (62) connected to one of the motion converters in opposi... | 07/01/2008 |
| 7377035 | 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 ... | 05/27/2008 |
| 7371058 | Oil feeding propeller of scroll compressor An oil feeding propeller of a scroll compressor for preventing deterioration of oil feeding generated when a rotation shaft is rotated in reverse is disclosed. The propeller is tightly fitted into the lower side of the oil passage of the rotation shaft, sucks oil in... | 05/13/2008 |
| 7367786 | Linear compressor A linear compressor includes: a cylinder block forming a compressing chamber; a piston reciprocatably provided in the compressing chamber; a reciprocating member connected to the piston to reciprocate with the piston as a single body; a driver driving the reciprocat... | 05/06/2008 |
| 7364138 | Membrane carburetor A membrane carburetor (1) has a control chamber (13) which is connected via at least one fuel opening (9, 10) to an intake channel (3). The control chamber (13) is delimited by a control membrane (14). A fuel line (54... | 04/29/2008 |
| 7354009 | Sewage pump A sewage pump includes a motor, a main shaft, an upper impeller, a lower impeller, a grinding wheel, a top cap, an upper bearing base with an upper mounting plate, an upper bearing base, a tube body with a wire inlet connector, a lower bearing base, a lower bearing ... | 04/08/2008 |
| 7354216 | Grease seal cup to retain lubrication for life extension in existing splined joint A grease seal cup for a splined joint between a drive shaft and a driven shaft comprises a cylindrical portion adapted to form a seal with the outer surface of the drive shaft and a seal with a sealing member, such as a spanner nut, of the driven shaft. The grease s... | 04/08/2008 |
| 7351043 | Horizontal compressor end cap A substantially horizontal compressor including a housing having a main body portion with an open end. An end cap is secured to the main body portion with the end cap being provided with a plurality of apertures. The hermetic terminal body of the compressor is seala... | 04/01/2008 |
| 7351303 | Microfluidic systems and components Microfluidic systems and components. A microfluidic system includes one or more functional units or microfluidic chips, configured to perform constituent steps in a process and interconnected to form the system. A multi-layer microfluidic system includes a separate ... | 04/01/2008 |
| 7337695 | Transmission casing A casing has casing parts and fastening elements, wherein the casing parts are connected to one another by the fastening elements. The fastening elements are located inside the casing so that the exterior of the casing is free of projections and recesses. A first on... | 03/04/2008 |
| 7338263 | Method and apparatus for compressor re-manufacture In a method of repairing a scroll compressor, the casing 100 of the compressor is cut open by making two transverse cuts through the casing to give access to the internal components of the compressor. The casing 100 is then resealed, using two annular ... | 03/04/2008 |
| 7332843 | Motor A pump apparatus includes a motor unit and a pump unit. The motor unit includes a cylindrical yoke housing and a rotor accommodated in the yoke housing. A rotary shaft of the rotor is supported by a first bearing and a second bearing. In a direction from a bottom wa... | 02/19/2008 |
| 7316547 | Reciprocating compressor driven by a linear motor A reciprocating compressor driven by a linear motor, comprising a shell, within which are mounted: a reference assembly formed by a motor and a cylinder (1); a resonant assembly formed by a piston (2) reciprocating inside the cylinder (1), and b... | 01/08/2008 |
| 7314561 | Method for purifying water An integrated system and method for removing excess nutrients from water, for removing the nutrients from the removal site, for enhancing soil, and for producing pulp and paper products includes bioremediating water to be treated with cultured algae or another suita... | 01/01/2008 |
| 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 |
| 7311062 | Milking plant and method for reducing sound emissions in a milking plant The invention relates to a milking plant wherein the vibrations and sound emissions thereof are significantly reduced. In said inventive milking plant, a vacuum control valve (500) is directly connected to a vacuum compensation tank (200). The vacuum c... | 12/25/2007 |
| 7311501 | Scroll compressor with bifurcated flow pattern A scroll compressor includes various features that promote a bifurcated flow pattern of gas through a compressor shell to reduce oil entrainment. After entering the shell, some gas travels upward, which reduces the volume of gas traveling downward toward an oil sump... | 12/25/2007 |
| 7300260 | Special fluids for use in a hydrostatic transmission A positive displacement piston unit is provided that utilizes a magnetorheological (MR) or electrorheological (ER) fluid as the transmission fluid. Each cylinder of the invention has an intake port connected to the suction port of the hydrostatic pump and an output ... | 11/27/2007 |
