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9032722 Hybrid operating machine  
A controller determines whether or not a control valve for controlling the supply of pressure fluid from a main pump to an actuator is at a neutral position, detects input power of a hydraulic...
9032723 Hydraulic hybrid vehicle with safe and efficient hydrostatic operation  
A shut off valve is configured to shut off flow from the high pressure fluid line to the high pressure accumulator in a series hydraulic hybrid vehicle in order to quickly raise system pressure in...
9021797 Energy-efficient hydraulic drive for the linear movement of a mass  
Hydraulically driven arrangement for the linear movement of a mass body consisting of two double acting cylinders coupled in parallel, whereby one operating cylinder is a control cylinder for...
9013050 Hybrid construction machine  
Provided is a hybrid construction machine including: a hydraulic actuator; a hydraulic pump which discharges hydraulic fluid for driving the hydraulic actuator; a generator-motor which performs an...
9004239 Support for supporting a structure on a surface  
A support for supporting a structure on a surface, comprising at least one support element, each support element comprising a piston, a cylinder in which the piston is moveable, and a brake for...
8997476 Hydraulic energy recovery system  
A machine includes a hydraulic cylinder configured to raise and lower a boom of the machine, and an accumulator selectively fluidly connected to the hydraulic cylinder. The accumulator is...
8991536 Pressure control device and method for controlling pressure in a vehicle  
To lower the fuel consumption of a vehicle having a pneumatic brake system during operation of the vehicle by utilizing existing components to their full capacity, thus contributing to energy...
8959905 Hydrostatic drive system  
A hydrostatic drive system has a motor-driven hydraulic pump (1) connected to at least one hydraulic drive unit (7) by a first working line (19) and a second working line (21) forming a hydraulic...
8950180 Hybrid construction machine  
A hybrid construction machine drives the upper swing structure using a hydraulic motor and an electric motor together and is capable of regenerating the energy of the upper swing structure in...
8938956 Method of operating an energy recovery cylinder  
The present invention relates to an implement, in particular an excavator or machine for material handling, with an element movable via at least one working drive, wherein at least one energy...
8919113 Hydraulic control system having energy recovery kit  
An energy recovery retrofit kit for a hydraulic control system is disclosed. The energy recover retrofit kit may have a first accumulator and a second accumulator. The energy recover retrofit kit...
8915073 Fluid power device, method and system  
A fluid power device, method and system, the device including a passive, latent, integrally formed fluid reservoir member designed for operable communication with a transmission system, the...
8893489 Accessory drive for hybrid vehicles  
A vehicle includes an internal combustion engine, a first hydraulic pump/motor coupled with the internal combustion engine, and a second hydraulic pump/motor is coupled with at least one driven...
8881519 Slewing type working machine  
A slewing-type working machine capable of reducing back pressure generated during slewing. The slewing-type working machine includes: a base carrier; an upper slewing body; a hydraulic motor...
8869519 Hybrid-type shovel  
An electric power accumulating means (30) includes a DC bus connected to an electric power accumulator (19) and supplies a direct current, a smoothing capacitor provided to the DC bus, and a...
8857168 Overrunning pump protection for flow-controlled actuators  
A hydraulic system includes an actuator, a pump, rod side and cap side fluid connections between the pump and the rod and cap side chambers, respectively, at least one selectively actuatable...
8857167 Integral accumulator/reservoir system  
An integral accumulator/reservoir system including a low pressure vessel having a low-pressure vessel wall defining a low-pressure vessel cavity; a high-pressure accumulator having a high-pressure...
8833065 Control device for hybrid construction machine  
A control device for a hybrid construction machine includes a discharge pressure introduction passage that leads a discharge pressure from a variable volume pump to a regulator, and a load...
8826656 Slewing type working machine  
A slewing-type working machine includes: a hydraulic motor having first and second ports and driving an upper slewing body to slew it; a hydraulic pump; a slewing operating device including an...
8826653 Slewing type working machine  
A slewing-type working machine includes: a hydraulic motor for slewing an upper slewing body; a hydraulic pump; a slewing operation device including an operation member; a control valve...
8820064 Recuperating passive and active suspension  
A hydraulic actuator assembly includes an actuator, a first sink subsystem in fluid communication with an upper working chamber of the actuator, a second sink subsystem in fluid communication with...
8806860 Hybrid construction machine  
A hybrid construction machine includes a control valve provided in a flow passage that connects an actuator to a regenerative hydraulic motor, an opening of which is controlled by a pilot pressure...
8726645 Hydraulic control system having energy recovery  
A hydraulic control system for a machine is disclosed. The hydraulic control system may have a tank, a pump configured to draw fluid from the tank and pressurize the fluid, a swing motor...
8701398 Strain energy accumulator  
An expandable accumulator and reservoir assembly includes a housing defining an interior chamber configured to contain a working fluid therein. An expandable accumulator is positioned at least...
8689550 Hydraulic control system in working machine  
A hydraulic control system that includes a controller that controls the accumulator flow rate control valve and a discharge flow rate of the hydraulic pump, wherein the controller: determines a...
8683793 Method for recuperating potential energy during a lowering operation of a load  
A method is provided for recuperating potential energy during a lowering operation of a load, wherein a hydraulic system is adapted to lift and lower the load. In the method, at least two energy...
8646266 Hydraulic output drive shaft generator  
The invention relates to a mobile machine having a traction drive and working hydraulics. The drive unit has a radial piston pump which is driven by a drive set and supplies working hydraulics....
8601806 Electric hydraulic motor system for large vehicles  
An electric hydraulic motor system for large vehicles. An electric motor and standard fuel engine of the vehicle together create hydraulic pressure via hydraulic pumps. Hydraulic pumps supply the...
8601807 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Hydraulic energy recovery system with dual-powered auxiliary hydraulics
 
A power transfer system for a vehicle that comprises a an internal combustion engine, one or more drive wheels, and power transfer apparatus transfers power from the prime mover to the wheels for...
8596054 Absorber-replenisher in a hydrostatic circuit  
Methods and systems for operating an absorber-replenisher to supply fluid to a low pressure circuit in a hydrostatic circuit or recover surplus energy usually wasted across a pressure relief valve...
8596055 Hydraulic drive system  
A hydraulic drive system for an actuator uses a pair of pressure compensated hydraulic machines to control flow to and from the drive chambers of the actuator by varying the controlled pressure of...
8577560 Controller of hybrid construction machine  
An efficient use of discharged energy of a boom cylinder is provided. A control unit has a function of receiving an output signal from a sensor provided in a boom operated valve and determining a...
8567183 Multistage hydraulic gas compression/expansion systems and methods  
Multistage hydraulic systems and methods for converting the potential energy of a pressurized gas, particularly air, into mechanical work when operating in motor, and for producing compressed gas...
8485298 Distributed power generation system for surface transport  
A power generation system for a surface transport vehicle having at least two wheels. The power generation system includes a primary power generation device and a secondary power generation...
8468816 Hybrid working machine  
In a hybrid working machine in which the maximum engine output is set at the average power and the maximum pump input is set to be larger than the maximum engine output in a normal state, in an...
8448432 Actuators  
Actuators suited for use with, for example, vehicular suspension systems. In some embodiments, the present actuators include a reversible hydraulic pump configured to produce variable hydraulic...
8429907 Active hydraulic regeneration for motion control  
A hydraulic system including a hydraulic power source (102) having an output and a directional control valve (106) coupled to the output of the hydraulic power source. The system also includes a...
8418451 Piece of working equipment  
The present invention relates to a piece of working equipment, in particular to an excavator or to a machine for the transfer of material, having an element movable via at least one working...
8407993 Method for controlling a hydraulic cylinder in a work machine  
A method is provided for controlling a hydraulic cylinder in a work machine, which hydraulic cylinder is arranged to move an implement in relation to a part of a vehicle, with the hydraulic...
8402759 Drive having an energy storage device and method for storing kinetic energy  
The invention relates to a drive (1) having an energy storage device and a method for storing brake energy. A drive (1) has an energy storage device having a hydrostatic piston engine (9) and a...
8362629 Energy management system for heavy equipment  
Equipment having an energy management system includes an articulated arm, a work implement, an energy management system, and a hydraulic circuit. The articulated arm includes hydraulic actuators...
8327637 Hydraulic energy recovery system with dual-powered auxiliary hydraulics  
A power transfer system for a vehicle that comprises a an internal combustion engine, one or more drive wheels, and power transfer apparatus transfers power from the prime mover to the wheels for...
8312716 Hydraulic drive system  
The present invention relates to a hydraulic drive system having a pressure-regulated hydraulic pump for the provision of a system pressure and having a secondarily regulated hydraulic motor. In...
8312715 Hydraulic output drive shaft generator  
The invention relates to a mobile machine having a traction drive and working hydraulics. The drive unit has a radial piston pump which is driven by a drive set and supplies working hydraulics....
8302743 Support for supporting a structure on a surface  
A support for supporting a structure on a surface, comprising at least one support element, each support element comprising a piston, a cylinder in which the piston is moveable, and a brake for...
8250861 Energy storage system including pressurized reservoir  
An energy storage system includes a reservoir defining an interior chamber, a collapsible bladder positioned within the interior chamber and having working fluid therein, a one-way valve in fluid...
8240143 Hydraulic energy recovery system  
A circuit having at least one hydraulic motor, two main ducts for feeding or discharging the at least one motor, a low-pressure fluid source, and a high-pressure accumulator forming a...
8220256 Hydrostatic drive with braking energy recovery  
A hydrostatic drive in an open circuit is provided. The hydrostatic drive has a hydraulic pump and a hydraulic motor. The hydraulic pump and the hydraulic motor are connected to one another via a...
8220255 Drive having an energy recovery function having a brake pressure control valve  
The invention relates to a drive (1) having an energy recovery function. The drive having an energy recovery function comprises a hydrostatic piston machine (9) and at least one storage element...
8209975 Arrangement for operating a hydraulic device  
A fluid system includes a controllable first pump unit for supplying fluid pressure to at least one implement; a prime mover arranged to supply a driving torque to the first pump The first pump...

Matches 1 - 50 out of 254 1 2 3 4 5 6 >