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| Number | Title | Issue Date |
| 8087900 | Agricultural harvester with propulsion load shifting between dual engines An agricultural harvester includes a first power unit which is couplable with a first primary load. The first primary load includes a threshing system load. A second power unit has a threshold power output and is couplable with a second primary load. The second prim... | 01/03/2012 |
| 7841838 | Rotary closed type compressor and refrigerating cycle apparatus A rotary closed type compressor is configured such that an inside of a case becomes high pressure, and the rotary closed type compressor comprises a first cylinder and a second cylinder having cylinder chambers in which eccentric rollers are housed, respectively, va... | 11/30/2010 |
| 7762788 | Fluid conveyance system and fluid conveyance device A fluid conveyance system includes: a fluid conveyance device including a micro pump module which compresses a flexible tube communicating with a fluid containing receptacle and discharges a fluid, a memory device furnished on the micro pump module which stores indi... | 07/27/2010 |
| 7530796 | Compressors Compressors are provided which include a motor having a drive shaft; a compression chamber, having an inlet and an outlet; a diaphragm, disposed within the compression chamber such that when the diaphragm is deflected back and forth between a first position and a se... | 05/12/2009 |
| 7462017 | Method for driving a bidirectional motor to rotate a fluid circulation pump A method for starting a motor (14) with a bidirectional rotation direction, to rotate a fluid circulation centrifugal pump (10) having a predetermined optimum hydraulic efficiency depending on the starting rotation direction thereof. The method provide... | 12/09/2008 |
| 7419365 | Compressor with capacity control A compressor includes an orbiting member and a non-orbiting member mounted relative the orbiting member to define first and second chambers disposed between the orbiting and non-orbiting members. The non-orbiting member forms a seal to generally prevent fluid commun... | 09/02/2008 |
| 7341432 | Apparatus and method for controlling operation of reciprocating compressor An apparatus and a method for controlling operation of a reciprocating compressor is capable of reducing a stroke estimation error by eliminating an error that occurs due to resistance and inductance of a compressor motor by estimating a stroke with a counter electr... | 03/11/2008 |
| 7341434 | Regulatory device comprising a threshold valve control valve The invention relates to a regulatory device for a pump (2), whose delivery volume can be adjusted, said device comprising a control valve unit (3) for regulating a control pressure that operates in a control pressure chamber (21) of an actuator... | 03/11/2008 |
| 7309217 | Variable capacity rotary compressor A variable capacity rotary compressor includes a hermetic casing, a housing installed in the hermetic casing to define therein first and second compression chambers having different capacities, and a compressing unit placed in the first and second compression chambe... | 12/18/2007 |
| 7293966 | Variable capacity rotary compressor A variable capacity rotary compressor including a housing, the housing including two compression chambers, the two compression chambers having different capacities; a rotating shaft rotatably provided in the two compression chambers; two eccentric units respectively... | 11/13/2007 |
| 7278938 | Power transmission device A power transmission device includes a first one-way clutch that transmits a rotational power of a pulley to a rotating shaft, and a second one-way clutch that transmits a rotational power of a rotor of a motor to the rotating shaft. The first one-way clutch is of i... | 10/09/2007 |
| 7275735 | Fan drive for fluid cooler with evaporative heat exchanger A cooling tower and/or a fan drive system are provided which enhance cooling performance, are able to reduce lateral temperature gradients at least to some degree, provide for easy removal of debris and/or provide for easy fan adjustment. ... | 10/02/2007 |
| 7245101 | System and method for monitoring and control The invention provides for the monitoring and control of a system, such as a linear electro-mechanical transducer, e.g. a linear electric motor, particularly when driven in a reciprocating manner. A dynamic model of the linear motor and its load is used to calculate... | 07/17/2007 |
| 7240682 | Washing fluid pump The invention concerns a washing fluid pump (1) for windows and/or headlamp cleaning installations on motor vehicles including at least one motor, at least one pump housing (2) with at least one impeller (11) arranged therein, at least one intak... | 07/10/2007 |
| 7226273 | Method of generating compressed air, and compressor arrangement for implementing the method Method and compressor arrangement for generating compressed air, particularly for commercial vehicles, which is generated by way of a compressor unit (3) driven by an internal-combustion engine (1) from the ambient air according to a control unit (1... | 06/05/2007 |
| 7200994 | Free piston stirling engine control A control system for a Stirling engine including the use of a synchronous power converter (“SPC”) which is connected to the terminals of the alternator in a linear alternator/FPSE power system. According to the teachings of the present invention, the attached SP... | 04/10/2007 |
| 7195110 | One-way clutch unit There is provided a one-way clutch unit that is simple in structure and compact. An annular recess 67 is provided in an inner periphery of a side of a deep groove ball bearing portion 55 of a first inner ring 7 of a first one-way clutch 1... | 03/27/2007 |
| 7184254 | Apparatus and method for controlling the maximum stroke for linear compressors An apparatus and method for controlling the maximum stroke of a linear compressor is provided. The shorting of the normal supply voltage of a compressor to ground is used to detect overstroking. A plurality of transistors are electrically coupled to the control circ... | 02/27/2007 |
| 7151348 | Motor driving apparatus A motor driving apparatus for driving a linear vibration motor having a spring member that supports a mover so as to form a spring vibration system including the mover. The motor driving apparatus employs an accurate spring constant of the spring member correspondin... | 12/19/2006 |
| 7143859 | Construction machinery Construction machinery which is capable of improving fuel efficiency of the engine and also capable of effectively utilizing surplus energy in a light-load mode. The construction machinery includes an engine, a hydraulic pump driven by the engine, and actuators driv... | 12/05/2006 |
| 7131820 | Method for controlling a thick matter pump A method for controlling a thick matter pump comprising two delivery cylinders (10) emerging, via two openings (12), into a material reservoir (14), associated with two delivery pistons (26), symmetrically synchronized relative to said cy... | 11/07/2006 |
| 7131386 | Marine propulsion system with pressure compensated hydraulic supply capability A hydraulic system for a marine vessel incorporates a single hydraulic pump that can be driven by either first or second motive devices, such as an internal combustion engine or an electric motor. Depending on the circumstances, the pressure required by the hydrauli... | 11/07/2006 |
| 7104499 | Rechargeable compressed air system and method for supplemental aircraft thrust A system for providing aircraft thrust includes a compressor, operable to take in a quantity of air, reduce the volume of the air to generate compressed air, and to deliver the compressed air to a tank. The tank is coupled to the compressor and is operable to receiv... | 09/12/2006 |
| 7090470 | Apparatus and method for preventing a piston and valve collision in a linear compressor An apparatus and method for controlling a linear compressor is provided. The linear compressor controlling apparatus includes a voltage detection unit, a current detection unit, a control unit and a compressor drive unit. The voltage detection unit detects a voltage... | 08/15/2006 |
| 7074013 | Dual volume-ratio scroll machine The present invention provides the art with a scroll machine which has a plurality of built-in volume ratios along with their respective design pressure ratios. The incorporation of more than one built-in volume ratio allows a single compressor to be optimized for m... | 07/11/2006 |
| 7063519 | Motor driven centrifugal compressor/blower This invention provides a small, high efficiency, oil free motor driven compressor/blower suitable for providing pressurized, contamination-free gas and or air to transportation, industrial and aerospace fuel cell systems or other contaminant-intolerant applications... | 06/20/2006 |
| 7025571 | Apparatus and method for controlling a reciprocating compressor Disclosed is an apparatus and method for controlling a reciprocating compressor capable of inexpensively and exactly controlling a position of a piston in a cylinder, by which a top clearance is minimized according to the information of a phase difference between a ... | 04/11/2006 |
| 7020553 | Signal processing system for construction machine A machine body controller 70A includes a modification control unit 70Ab for computing a torque modification value based on detected signals from environment sensors 75 to 83, and modifies a maximum absorption torque of a hydraulic pump co... | 03/28/2006 |
| 7014427 | Capacity controller of capacity variable compressor A small sized and structurally simple capacity controller having a wide control range of a compressor with variable capacity adds a differential pressure to an inhalation pressure on an arbitrary level by a piston valve body actuated by a solenoid and by the inhalat... | 03/21/2006 |
| 7007781 | One-way clutch unit and one-way clutch therefor There is provided a compact one-way clutch unit that can perform connection and disconnection of power in two systems. An end portion on a side of a deep groove ball bearing portion 65 of a second one-way clutch 2 is disposed in an annular recess 67... | 03/07/2006 |
| 7005810 | Motor driving apparatus An apparatus for driving a linear vibration motor that employs a proper motor thrust constant value corresponding to each linear vibration motor at position calculation for obtaining the position of the mover of the linear vibration motor, thereby increasing the acc... | 02/28/2006 |
| 7001154 | Apparatus for controlling a linear compressor and preventing the collision of a piston with a valve in the compressor Disclosed herein is an apparatus and method for controlling a linear compressor. The linear compressor control apparatus has a collision detection unit, a control unit, and a compressor driving unit. The collision detection unit detects a collision of a piston with ... | 02/21/2006 |
| 6952929 | Air conditioning systems for vehicles, comprising such air conditioning systems, and methods for driving hybrid compressors of such air conditioning systems An air conditioning system for a vehicle includes a compressor. The vehicle includes a first drive source and the compressor includes a second drive source. The compressor is driven by the first drive source or the second drive source, or a combination thereof, and ... | 10/11/2005 |
| 6954040 | Method of controlling a reciprocating linear motor A free piston gas compressor comprising a cylinder, a piston reciprocable within the cylinder and a reciprocating linear electric motor derivably coupled to the piston having at least one excitation winding. A measure of the reciprocation time of the piston is obtai... | 10/11/2005 |
| 6949041 | Vehicle driving system A vehicle driving system includes a pulley shaft synchronously rotating with a crankshaft of an engine, an auxiliary unit drive shaft driving an auxiliary unit, a planetary gear mechanism portion having elements such as a sun gear, a pinion carrier and a ring gear. ... | 09/27/2005 |
| 6930462 | Apparatus and method for controlling operation of compressor In an apparatus and a method for controlling operation of a compressor, by removing deviation generated by resistance and inductance and removing an error in a stroke estimation value of a compressor, operation of the compressor can be accurately controlled. The app... | 08/16/2005 |
| 6874994 | Hydraulic pump and motor A hydraulic unit has a drive shaft (52) mounted in a manifold block (54) and coupled to a torque plate (80) on a central axis. A bent axis motive unit (60) has a yoke connected to the manifold block supported for rotation on the yoke. Hol... | 04/05/2005 |
| 6830438 | Hybrid compressor A controlled compressor apparatus enables a hybrid compressor in an idle-stopping vehicle to operate more efficiently when driven by a motor alone. The controlled compressor apparatus includes a compressor 110, included in a refrigeration circuit 200, ... | 12/14/2004 |
| 6783331 | System and method of multiple-phase pumping A pump system for multi-phase fluids that includes a drive-shaft (11), mechanical differential units (12, 22, 23, 23′, D1 . . . Dn) and pumps (14, 14′, 25, 25′, 25″, 25′″, B1 . . . Bn) wher... | 08/31/2004 |
| 6779982 | Apparatus for controlling driving of reciprocating compressor and method thereof Disclosed is an apparatus for controlling a driving of a reciprocating compressor and a method thereof, in which a cooling capacity is decreased without a re-expansion loss by controlling a driving of a compressor used in a refrigerator by using a current offset whe... | 08/24/2004 |
