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| Number | Title | Issue Date |
| 8186156 | Automotive construction machine A ureal water tank (28), a storage of an aqueous urea solution, is located within a utility room (6G) in a right front section of a revolving frame (6), which is readily accessible from outside. In this instance, among a plurality of operating o... | 05/29/2012 |
| 8104275 | Hydraulic circuit for heavy equipment A hydraulic circuit for heavy equipment is provided, which can prevent signal pressure exceeding a predetermined pressure from being formed in a pilot signal path provided in a switching valve to sense whether the switching valve has been shifted in a hydraulic syst... | 01/31/2012 |
| 8051650 | Hydraulic system A hydraulic system for actuating a clutch and/or a variable speed drive unit of a belt-driven conical-pulley transmission of a vehicle, such as a commercial vehicle, and having a variable transmission ratio and a torque sensor. The hydraulic system includes at least... | 11/08/2011 |
| 7770388 | High efficiency 2-stage fuel pump and control scheme for gas turbines A two-stage system for delivering fuel to a gas turbine including a first stage variable pump for serving as a primary source of fuel, a second stage fixed pump for selectively supplementing the variable pump, a bypass valve connected to the fixed pump for loading a... | 08/10/2010 |
| 7434392 | Configurable hydraulic system for agricultural tractor and implement combination When different implements are attached to an agricultural tractor, various hydraulic actuators on the implement are operated by connection to the hydraulic system on the tractor. A single hydraulic fluid connector on the tractor has first and second ports with a sep... | 10/14/2008 |
| 7363886 | Power unit To achieve improved cooling in a power unit, a first fan is coupled with an end of a crankshaft of an internal combustion engine to cool at least a cylinder of the internal combustion engine, and a second fan is coupled with another end of the crankshaft to cool at ... | 04/29/2008 |
| 7360357 | Hydraulic steering system with input horsepower limiting circuit and increased fan speeds at low engine RPM A hydraulic system that provides hydraulic fluid to a power steering system of a vehicle at a substantially constant flow rate and can also divert excess hydraulic fluid to the air cooling fan of an associated vehicle at low engine speeds is disclosed. The resulting... | 04/22/2008 |
| 7357152 | Releasable non-return valve The invention relates to a releasable non-return valve, in which a connection between a working chamber and a connector chamber may be closed by a non-return piston and opened by the opening movement of a release piston which may be pressurized with a release pressu... | 04/15/2008 |
| 7351288 | Shock absorbing fluidic actuator According to one aspect of the invention, a fluidic actuator and a control system for the fluidic actuator may be provided. A first component of the actuator may have two openings interconnected by a passageway. A second component may be moveably housed within the p... | 04/01/2008 |
| 7281370 | Fan revolution speed control method Temperature of each cooling target fluid is detected. When the flow rate of a cooling target fluid passing through a cooling system is high, the fan revolution speed of a cooling fan of the cooling system is controlled to achieve a target fan revolution speed so tha... | 10/16/2007 |
| 7222484 | Hydraulic system with multiple pressure relief levels A hydraulic system has at least one primary hydraulic functions and a plurality of secondary hydraulic functions all of which are connected in parallel to a supply conduit and a return conduit. A first pressure relief valve prevents pressure in the supply conduit fr... | 05/29/2007 |
| 7182139 | System and method for controlling downhole tools A system and method is provided for integrated control of multiple well tools. Predetermined pressure levels are utilized in independently actuating specific well tools from a plurality of well tools. The number of well tools independently controlled may be greater ... | 02/27/2007 |
| 7172041 | Drive-by-wire lawnmower The mower has at least two independently driven wheels that are each capable of bi-directional rotation. The at least two wheels are independently driven so that operation of the at least two wheels causes the at least two wheels to independently rotate which propel... | 02/06/2007 |
| 7163078 | Hydrostatic drive The invention relates to a hydrostatic drive comprising at least one hydraulic pump (1) and a first and a second hydraulic motor (6, 25), which are respectively connected to said hydraulic pump (1) by means of two service lines (4, 41, 5, 5 | 01/16/2007 |
| 7155907 | Electro-hydraulic fan drive cooling and steering system for vehicle An electro-hydraulic system for operating a cooling fan and providing hydraulic fluid to a power steering system of the vehicle includes a hydraulic pump unit including first and second fixed displacement pumps and a common drive shaft for these pumps. A hydraulic f... | 01/02/2007 |
| 7146808 | Hydraulic system having priority based flow control A hydraulic system has a source, a plurality of fluid actuators, and a controller. The controller is configured to receive an input indicative of which of the plurality of fluid actuators are a first and a second type of fluid actuator, to receive an input indicativ... | 12/12/2006 |
| 7142967 | Features of main control computer for a power machine The present invention is directed to a computer based control system for controlling hydraulic and electromechanical actuators on a power machine, such as a skid steer loader. The computer based control system is configured to implement a number of features to enhan... | 11/28/2006 |
| 7121389 | Oil system The invention relates to an improved system for supplying filtered oil to wet brakes of the tractor without additional/auxiliary pump. The system comprises of a suitably sized connection provided on the drain line of the Hydraulic system, which supplies required qua... | 10/17/2006 |
| 7108324 | Vehicle seat adjuster A pneumatic seat adjuster for moving a vehicle seat relative to a floor of the vehicle includes a body having a bore formed therein. The body is adapted to be connected to one of a floor and a vehicle seat. A piston is slidably disposed in the bore of the body. The ... | 09/19/2006 |
| 7104053 | Control method A hybrid actuation system comprises first and second actuator arrangements (10, 12) arranged to apply first and second output loads respectively to a common element (14). A control method for controlling the operation of the hybrid actuation system inc... | 09/12/2006 |
| 7099722 | Work machine attachment control system A control system is provided for a work machine having a plurality of removably attachable work tools. The control system has at least one operator input device that is configured to control a movement speed of the work machine. The control system also has a tool re... | 08/29/2006 |
| 7076896 | Control for an operating arm of an earthmoving vehicle An earthmoving vehicle has an operating arm that is raised and lowered by a hydraulic system. The hydraulic system includes a drain line and at least one actuator connected to the operating arm. The actuator defines a variable-volume chamber connectable to the drain... | 07/18/2006 |
| 7069673 | Hybrid construction equipment power control apparatus Maximum charging power of a battery (63) is set by a battery-charging power setting unit (75), while maximum discharging power of the battery (63) is set by a battery-discharging power setting unit (76). Lower and upper limit of generator... | 07/04/2006 |
| 7059125 | Hydraulic controller for construction machine In a hydraulic controller for construction machine according to the present invention, wherein there are provided regulators for each of a first and a second capacity variable hydraulic pump, each of the regulators being controlled, detecting the discharge pressure ... | 06/13/2006 |
| 7047735 | Increasing hydraulic flow to tractor attachments Hydraulic flow to tractor attachments such as a sweeper, snow thrower, breaker, auger or cold planer may be increased by diverting pressurized hydraulic fluid from the auxiliary pump. A diverter valve between the auxiliary pump and the auxiliary circuit of the loade... | 05/23/2006 |
| 7029072 | Modified rumble strip cutter A rumble strip cutting machine having a drum that can be shifted from one side of the machine to the other. The machine includes a piston wheel that imparts an up and down motion to the frame so that rumble strips can be cut at desired intervals as the machine is dr... | 04/18/2006 |
| 7007466 | System and method for controlling hydraulic flow A method is provided for controlling hydraulic flow to a hydraulic actuator in fluid communication with a pump. The method includes generating a signal representative of a speed of the pump and selecting a relationship from a plurality of relationships between valve... | 03/07/2006 |
| 6981371 | Control device for working machine A control device for a working machine according to the present invention comprises a capacity variable pump for supplying working oil, a controller for controlling the discharge amount of the pump, a control valve for controlling the working oil discharged from the... | 01/03/2006 |
| 6978858 | Visual reference control apparatus for hydraulic actuator systems A control apparatus for controlling movement of a hydraulic actuator of a hydraulic control system associated with, for example, an off-road vehicle or a vessel. A geared transmission adapted to be connectable to a support member has rotatable input and output shaft... | 12/27/2005 |
| 6968684 | Valve for a hydraulic drive apparatus An improved valve for use in a hydrostatic drive apparatus for a vehicle such as a zero turn vehicle. For each hydraulic drive system in the vehicle, a valve is located between the high and low pressure sides of the closed hydraulic circuit connecting the hydraulic ... | 11/29/2005 |
| 6955045 | Oil pump system Variable displacement pump pumps oil to one or the other ports of an oil operated vehicle wheel motor to drive a lawn mower. ... | 10/18/2005 |
| 6926113 | Cushioned steering for articulated vehicle An articulated wheel loader provides a cushioned deceleration at the limits of its turning to the left and to the right by reducing fluid flow through a hydraulic steering cylinder as the articulated frames approach abutment. The throttled fluid flow causes a variab... | 08/09/2005 |
| 6912803 | Failure detection device for hydraulic motor and hydraulic drive vehicle A failure detection device for a hydraulic motor according to the present comprises a hydraulic pump (3) that is driven by a prime mover (2); a hydraulic motor (1) that is driven by hydraulic oil discharged from the hydraulic pump (3); an... | 07/05/2005 |
| 6851207 | Construction machinery First and second hydraulic pumps each adapted to operate plural actuators are activated by separate electric motors respectively. In accordance with signals provided from a controller on the basis of operations of levers, the number of revolutions of the electric mo... | 02/08/2005 |
| 6820356 | Hybrid powered construction equipment Hybrid powered construction equipment is capable of making effective use of the output energy of an engine; increasing operating speed while keeping noise level low, and assuring operation power more than the performance of the engine. To this end, the hybrid powere... | 11/23/2004 |
| 6799424 | Hydraulic circuit A hydraulic circuit comprises a first and a second merging line capable of supplying pressure oil from a third pump for a third circuit to directional control valves in a first and a second circuit, respectively, and a merging valve for selectively communicating or ... | 10/05/2004 |
| 6761027 | Pressure-compensated hydraulic circuit with regeneration A fluid system includes first and second control valves that control fluid communication with first and second actuators. The first control valve may combine fluid flow from a second end port of the first actuator with fluid flow from a pressurized fluid source when... | 07/13/2004 |
| 6639211 | Contrast-enhanced MRA including an effective zero-latency method of bolus detection To generate a magnetic resonance angiograph, a patient is injected with a contrast-enhancing agent (210). An ellipsoidal central portion of k-space (300) and a first surrounding region (310) are continuously sampled (220). A portion of each central data s... | 10/28/2003 |
| 6618659 | Boom/bucket hydraulic fluid sharing method Method of sharing hydraulic fluid, includes: inputting first signal from a first manual control and second signal from a second manual control; sending a first control signal controlling a first valve in response to first signal; sending a second control ... | 09/09/2003 |
| 6496767 | Constant groundspeed autoshift method and apparatus for maximizing fuel economy A method of determining shift points in a step gear transmission system to maximize fuel economy is disclosed. In operation, the method uses fuel economy data from a first gear ratio to determine a first series of constant fuel consumption curves for the ... | 12/17/2002 |
