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US20150184679 ENERGY STORAGE SYSTEM  
Energy can be stored by directing fluid into an expandable receptacle that has a relatively heavy mass above it. The fluid fills the receptacle such that it expands and lifts up the heavy mass...
US20130205777 LOW FLOW POWER PLANT  
A power plant and method for harnessing power from a source of working fluid. The power plant may include a power shaft that includes a first power gear, a first reciprocating engine situated...
US20140060028 Pumped-Storage Power Plant  
A pumped storage power plant for a temporary reversible storage of energy, such as the energy available from wind power stations and/or photovoltaic systems that is fluctuating over time. The...
US20150033721 Liquid Nitrogen Conventional Generator  
The Liquid Nitrogen Conventional Generator operates by using electrical energy from an existing power plant to collect, cool, store and utilize Nitrogen from the atmosphere to generate power, in...
US20120228063 HYDRAULIC-ASSISTED LUBRICATION SYSTEM AND METHOD  
In one embodiment, the invention provides a lubrication system for a machine comprising: a direct current (DC) motor; a battery system for powering the DC motor; a lubricating system in...
US20100293933 METHOD FOR AUTOMATICALLY DETERMINING THE CONDITION OF A HYDRAULIC AGGREGATE  
A hydraulic aggregate for supplying a hydraulic cylinder in consecutive load strokes is monitored for its working load in order to determine the condition of the aggregate automatically. For this...
US20150001854 ENERGY RECOVERING EQUIPMENT AS WELL AS A METHOD FOR RECOVERING ENERGY  
Disclosed is an energy recovering system having a first pump for pumping a fluid from a first lower level at a first lower potential energy to a second higher level corresponding to a second...
US20120104752 WIND TURBINE GENERATOR AND TIDAL CURRENT GENERATOR AND OPERATION METHOD THEREOF  
An object of the invention is to provide a wind turbine generator or a tidal current generator which is equipped with a hydraulic transmission and achieves a superior power generation efficiency,...
US20140182278 POWER GENERATION FROM ATMOSPHERIC AIR PRESSURE  
An apparatus and method is provided for generating net energy by converting the natural pressure of atmospheric air into kinetic energy, which is then converted to mechanical energy by a turbine,...
US20140075928 HYDRAULIC CONTROL MANIFOLD ASSEMBLY  
A hydraulic manifold assembly for hydraulic equipment is provided. The hydraulic manifold assembly includes a hydraulic manifold. The hydraulic manifold includes at least four control valves...
US20140119867 ENERGY RECOVERY SYSTEM HAVING INTEGRATED BOOM/SWING CIRCUITS  
An energy recovery system for a machine is disclosed. The energy recovery system may have a boom circuit with at least a one linear actuator configured to move a work tool, and a boom accumulator...
US20150027952 Hydraulic Geofracture Energy Storage System with Desalinization  
Energy is stored by injecting fluid into a hydraulic fracture in the earth and producing the fluid back while recovering power and/or desalinating water. The method is particularly adapted to...
US20130213026 DRIVE CONTROL METHOD OF OPERATING MACHINE  
In drive control of an operating machine configured to drive a structure by a hydraulic motor configured to be driven by operating oil supplied from a hydraulic pump an electric motor configured...
US20130227937 RIDE CONTROL SYSTEM  
A ride control system and method where the system includes first hydraulics for equalizing pressure between ride control accumulators and boom cylinder head side, and second hydraulics for...
US20130000291 HYDRAULIC CIRCUIT HAVING ENERGY STORAGE AND REUSE  
A hydraulic circuit is disclosed. The hydraulic circuit may have a pump, a motor, a tank, and an accumulator. The hydraulic circuit may also have a valve movable between a first position at which...
US20150020511 METHOD FOR ENERGY RECOVERY OF HYDRAULIC MOTOR  
A method to recover energy in a reversible hydraulic motor system during a motor reverse event is disclosed. A swashplate of a hydraulic motor is pivoted over a center position when the hydraulic...
US20140290233 WATERCRAFT AND ELECTRICITY GENERATOR SYSTEM FOR HARVESTING ELECTRICAL POWER FROM WAVE MOTION  
This disclosure provides improved nautical craft that can travel and navigate on their own. A hybrid vessel is described that converts wave motion to locomotive thrust by mechanical means, and...
US20150096289 PRESSURISED ENERGY STORAGE SYSTEM IN WHICH THE HEAT ACCUMULATOR IS ARRANGED IN AN OVERPRESSURE ZONE  
The invention relates to a compressed air energy storage system comprising a pressure accumulator (2) for gas to be stored under pressure, and a heat accumulator (27) for storing the compression...
US20130145752 METHOD OF USING A PUMP POSITION SENSOR FOR AN EBS PUMP CHECK  
A method of performing a pump check for a brake system comprises determining a first position of a pump with a pump position sensor upon ignition of a vehicle. A pump motor is powered based upon a...
US20140318113 CUSHIONED SWING CIRCUIT  
A cushioned swing circuit provides the reduction of oscillation common in the operation of heavy equipment such as with boom members. The circuit utilizes a transfer of high pressure fluid flow...
US20140123635 DEVICE TO ACTUATE A FLUID CONNECTOR CONTAMINATION COVER  
A device to actuate a contamination cover on a machine bracket, the device comprising a master cylinder positioned on the machine bracket; a first slave cylinder positioned on the machine bracket...
US20130327028 SYSTEM AND METHOD FOR SLURRY HANDLING  
A system includes a slurry depressurizing system that includes a liquid expansion system configured to continuously receive a slurry at a first pressure and continuously discharge the slurry at a...
US20150159621 Electrical Generator  
A generator system and method is provided for generating electricity using a closed-loop/self-contained system which employs a tank of pressurized fluid to turn a turbine which in turn operates a...
US20150007568 POWER GENERATION APPARATUS, POWER GENERATION METHOD, DECOMPOSITION-GAS TURBINE AND DECOMPOSITION-GAS BOILER  
A power generation apparatus, a power generation method, a decomposition-gas boiler, and a decomposition-gas turbine with which nitrous oxide may be used as an environmentally friendly energy...
US20140060023 HYDRAULIC CONTROL SYSTEM HAVING SWING MOTOR ENERGY RECOVERY  
A hydraulic control system is disclosed for use in a machine. The hydraulic control system may have a work tool, a motor configured to swing the work tool, a tank, a pump configured to draw fluid...
US20140083087 HYDRAULIC TANK PRESSURIZATION SYSTEM  
A closed loop hydraulic system includes a hydraulic tank, a hydraulic power source, and an air pump. The hydraulic power source is in fluidly coupled to the hydraulic tank to draw the hydraulic...
US20130152565 HYDRAULIC SYSTEM HAVING ENERGY RECOVERY  
A hydraulic system for a machine is disclosed. The hydraulic system may have a pump configured to pressurize fluid, a swing motor driven by pressurized fluid to swing a body of the machine...
US20110185717 HYDRAULIC MANIFOLD PUMP  
A hydraulic manifold pump comprising a housing in which is located a first hydraulic circuit and a second hydraulic circuit. A bidirectional motor connectable to the first hydraulic circuit and...
US20150128580 HYDRAULIC BRAKE  
A hydraulic brake mechanism for use in hydraulic systems to provide braking of a hydraulic motor is disclosed. The brake mechanism provides proper braking under a range of operating conditions,...
US20140360173 HYDROSTATIC DRIVE SYSTEM  
A hydrostatic drive system for a machine is provided. The hydrostatic drive system includes a first hydraulic circuit, and a second hydraulic circuit. The first hydraulic circuit includes a first...
US20140109564 HEAT EXCHANGERS AND TOWER STRUCTURE FOR DENSITY-DRIVEN POWER GENERATION  
A power-generating tower comprises: at least one of the lower heat-exchange assemblies, at least one of the upper heat-exchange assemblies, a tower structure arranged to support each upper...
US20150211480 SYSTEM AND METHOD FOR STORING ENERGY  
Embodiments of the disclosure provide an energy storage system comprising: at least one linkage; a respective attachable and detachable west and east weight attached to the west and east ends,...
US20140182279 SHOVEL AND METHOD OF CONTROLLING SHOVEL  
A shovel includes a plurality of hydraulic actuators including a first hydraulic actuator and a second hydraulic actuator, a main pump, a hydraulic pump-motor configured to function as a hydraulic...
US20150082791 STEAM TURBINE SYSTEM WITH STEAM TURBINE CLUTCH  
A steam turbine system and method of operating a steam turbine system including a steam generator coupled to a high pressure section and a low pressure section. The steam turbine system may...
US20130255241 METHOD FOR CONTROLLING FLOW RATE OF ATTACHMENT FOR CONSTRUCTION EQUIPMENT  
A method of controlling a flow rate of an attachment for construction equipment of the present disclosure, in which an engine and a pump are connected to a control device to which various control...
US20110056192 TECHNIQUE FOR CONTROLLING PUMPS IN A HYDRAULIC SYSTEM  
A hydraulic system includes a plurality of pumps that provide pressurized fluid to a plurality of hydraulic actuators some of which work more that others. That system is controlled by producing a...
US20150128579 METHOD AND SYSTEM FOR STORING ENERGY  
A method is provided for storing energy including the steps of: during a time period when electrical energy is available at low prices, pumping water from a lower reservoir to a reservoir at a...
US20140230421 VELOCITY GRADIENT FLOATING TURBINE AND POWER GENERATION SYSTEM AND METHODS THEREOF  
The present invention in a preferred embodiment provides systems and methods for a velocity gradient floating turbine and power generation, comprising: a) a floating platform;b) guide vanes;c) a...
US20130098019 Meterless Hydraulic System Having Flow Sharing and Combining Functionality  
A hydraulic system includes a variable-displacement first pump and a variable-displacement second pump. The hydraulic system also includes a first actuator selectively connected either to the...
US20120324877 SYSTEM FOR DRIVING A BOOM OF A HYBRID EXCAVATOR AND A CONTROL METHOD THEREOF  
Disclosed are a system for driving a boom of a hybrid excavator, and a method for controlling same. The disclosed system comprises: an electric motor operating by means of a motor or generator; a...
US20150197915 Boom Cylinder Dig Flow Regeneration  
A hydraulic system and methods for conserving energy in such system is disclosed. The hydraulic system includes a hydraulic actuator having a head end, a rod end and a piston disposed...
US20130098016 Meterless Hydraulic System Having Flow Sharing and Combining Functionality  
A hydraulic system includes a variable-displacement first pump, a variable-displacement second pump, and a first actuator selectively connected either to the first pump in a closed loop manner and...
US20130276439 HYDRAULIC PUMP SYSTEM AND METHOD OF OPERATION  
A fluid management system includes a hydraulic main pump fluidly connected to a load, an accumulator fluidly connected to the hydraulic main pump, a secondary pump, a fluid preparation system...
US20140262788 Method and Apparatus for Conditioning Fresh and Saline Water  
A method and apparatus for conditioning water is disclosed. Water is flowed past a probe, wherein the water may include impurities. The probe is energized to excite the water and a presence of...
US20130009612 ENERGY EXTRACTION DEVICE WITH ELECTRICAL GENERATOR AND METHOD OF OPERATING ENERGY EXTRACTION DEVICE ELECTRICAL GENERATOR  
A wind turbine generator, or other energy extraction device, has a hydraulic circuit comprising a hydraulic pump driven by a rotating shaft and a hydraulic motor driving an electricity generator....
US20150198245 Hydraulic Drive System  
A drive system includes a continuously variable displacement pump and a motor hydraulically driven by the pump. A controller is configured to determine a motor displacement command to shift the...
US20140020372 INCREASED POWER IN COMPRESSED-GAS ENERGY STORAGE AND RECOVERY  
In various embodiments, energy is stored or recovered via super-atmospheric compression and/or expansion of gas in conjunction with substantially adiabatic compression and/or expansion from or to...
US20120137668 INCREASED POWER IN COMPRESSED-GAS ENERGY STORAGE AND RECOVERY  
In various embodiments, energy is stored or recovered via super-atmospheric compression and/or expansion of gas in conjunction with substantially adiabatic compression and/or expansion from or to...
US20100308598 Gravity-Electricity Generator  
A device that converts gravitational energy into electricity using the weight of a vehicle with a hydraulic turbine transmission that dissipates the acceleration into the generator while the...
US20140060017 MULTI-ORIFICE BYPASS FOR A HYDRAULIC MOTOR ASSEMBLY  
Apparatuses and systems that use a variable displacement motor-pump (VDMP) to control the position of a hose of an aerial refueling system are disclosed. At VDMP displacements greater than...