Matches 1 - 36 out of 36


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US20120124989 Hydraulic Power Unit With Auto-Load Sensing  
A hydraulic power unit is disclosed that is selectively connectable to a hydraulic tool. The hydraulic power unit automatically detects the attached or detached state of the tool and/or operates...
US20150240450 SHOVEL  
A shovel may be provided with a swing hydraulic motor, a relief valve provided on the swing hydraulic motor, and an accumulator part that supplies to the swing hydraulic motor a working oil having...
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...
US20150033720 Hydraulic Motor Drive System and Method  
A hydraulic motor drive system is disclosed. The hydraulic motor drive system includes a pump, a flow control module fluidly coupled to a discharge of the pump via a first conduit, and a hydraulic...
US20120210708 WATER METER  
A meter includes an inlet for receiving a fluid and a housing defining a cylindrical chamber receiving the fluid from the inlet, wherein a chamber axis passes through a center of the cylindrical...
US20090084104 PRESSURE RECOVERY SYSTEM  
A pressure recovery system according to the present invention comprises a pump, a flow control valve and a flow amplifier. The flow control valve has an inlet connected to the outlet of the pump,...
US20060016186 Hydrostatic transmission with bypass valve  
A hydrostatic transmission system having a pump and a motor, and a manually controlled bypass valve for creating a short circuit that includes the motor and not the pump, the bypass valve being...
US20140260233 Hydraulic actuator with on-demand energy flow  
Various embodiments related to hydraulic actuators and active suspension systems as well as their methods of use are described.
US20090104021 Turbine for power generation in a drill string  
The invention is directed to a turbine (3) for generating power in a drill string (2), including a turbine rotor (10) drivable by a fluid and a bypass device having a first bypass channel...
US20090107135 LOW POWER HMT WITH BY-PASS VALVE  
A method of operating a vehicle with a hydrostatic circuit. The method includes providing a hydrostatic circuit having first and second hydraulic kits that are fluidly connected to one another by...
US20130081384 METERLESS HYDRAULIC SYSTEM HAVING PUMP PROTECTION  
A hydraulic system is disclosed. The hydraulic system may have an over-center, variable-displacement pump, an actuator, and first and second passages that create a closed-loop circuit. The...
US20090165453 Method for supplying a fluid to a transmission component  
A method for supplying fluid to a transmission component such as a transmission control unit, a transmission lubricating system, and/or a transmission cooling system. The transmission is an...
US20140033698 METERLESS HYDRAULIC SYSTEM HAVING FORCE MODULATION  
A hydraulic system is disclosed. The hydraulic system may have a pump configured to draw low-pressure fluid from one of a first and a second passage, and discharge fluid at an elevated pressure...
US20140230425 HYDRAULIC CIRCUIT FOR RAM CYLINDER  
A hydraulic circuit for a ram cylinder includes: a ram cylinder which drives a driven device; a hydraulic unit including (i) a supply circuit which includes a supply control valve and a supply...
US20080209903 Hydraulic Drive Device for Working Vehicle  
[Object] To materialize a reduction in pump loss, the assurance of sufficient working device speeds and the priority assurance of an adequate steering capacity with simpler construction and at...
US20080066464 Vehicular hydraulic system with pressure dump and relief valve arrangement  
A vehicular hydraulic system having a pump, first application, pressure-dump valve and second application arranged in series. The pressure-dump valve diverts a portion of the primary fluid flow...
US20140033697 METERLESS HYDRAULIC SYSTEM HAVING FORCE MODULATION  
A hydraulic system is disclosed having a pump configured to draw low-pressure fluid from one of a first and second passage, and discharge fluid into the other of the passages. The hydraulic system...
US20080066463 Vehicular hydraulic system with dual relief valve  
A vehicular hydraulic system having a hydraulic pump and first and second hydraulic applications arranged in series. A dual relief valve defines first and second flow channels, a passageway and a...
US20130220425 FLOW SENSING BASED VARIABLE PUMP CONTROL TECHNIQUE IN A HYDRAULIC SYSTEM WITH OPEN CENTER CONTROL VALVES  
A hydraulic system has a variable displacement pump that sends fluid from a tank into a supply conduit from which separate open-center control valves convey the fluid to each one of a plurality of...
US20110231046 Variable Speed PTO & Hydraulic Flow Control for Body Equipment Integrated with a Hybrid Electric Powertrain  
A power take off system for a hybrid-electric vehicle comprises an internal combustion engine, a hybrid-electric motor and generator, a power take off mechanism, a control module, and an engaging...
US20100275589 Electro-Hydraulic Auxiliary Mode Control  
A work machine (10) comprises an auxiliary electro-hydraulic circuit (22) adapted to operate a hydraulic actuator (16) of an auxiliary tool (12) when the auxiliary tool (12) is attached to the...
US20090249777 TRANSMISSION DEVICE WITH AT LEAST ONE FORM-FIT SHIFTING ELEMENT BEING HYDRAULICALLY ACTUATED VIA A HYDRAULIC SYSTEM  
A transmission device (10) having at least one form-fitting shifting element (12) which is hydraulically actuated via a hydraulic system (11) with hydraulic pressure (p—12), in the area of a...
US20080245067 HYDROPNEUMATIC PRESSURE TRANSMISSION DEVICE  
A hydropneumatic pressure transmission device having a working piston and a transmitter piston for pressure transmission to the working piston is proposed, with the working piston being guided in...
US20080066461 Vehicular Hydraulic system with priority valve  
A vehicular hydraulic system with a pump and first and second hydraulic applications arranged in series. A valve is disposed whereby fluid from the pump flows through an inlet port, primary flow...
US20110283694 STEERING SYSTEM WITH DYNAMIC SLIP REDUCTION  
A steering system includes a fluid motor and a steering unit. The steering unit is in fluid communication with the fluid motor. The steering unit includes a fluid meter adapted to meter fluid to...
US20110209470 TRANSMISSION HYDRAULIC CONTROL SYSTEM HAVING A PUMP BYPASS VALVE  
A system for providing pressurized hydraulic fluid in a transmission of a motor vehicle includes a pump for providing pressurized hydraulic fluid having an inlet port and an outlet port. A bypass...
US20110023477 HYDROSTATIC CIRCUIT LOCK VALVE COMPONENTS, CIRCUITS, SYSTEMS, AND METHOD  
Methods and systems for operating a cylinder lock valve to control fluid flow to a hydraulic cylinder operating a drilling rig sub-system. The lock valve 1) allows fluid flow through the valve if...
US20110296824 HYDROSTATIC TRANSMISSION BY-PASS MECHANISM  
A bypass pin for a hydrostatic transmission is disclosed. The hydrostatic transmission has a hydraulic pump. The bypass pin has a head positioned at one end of a shaft. The bypass pin also has a...
US20120291428 Hydraulic System for Lifting a Crane on a Vehicle  
A hydraulic manifold system for lifting, installing, or repairing large industrial field equipment. The system includes a hydraulic motor, which is fluidly connected to a hydraulic line of a...
US20170108100 CONTINUOUSLY VARIABLE TRANSMISSION DEVICE  
The present invention is related to a non-stage transmission apparatus for changing the power transmission speed and the power transmission torque by changing an inlet path of the fluid. It...
US20170009783 SYSTEM FOR SELECTIVELY BYPASSING FLUID SUPPLY TO ONE OR MORE OPERATIONAL SYSTEMS OF A MACHINE  
A hydraulic system is provided to selectively and independently route pressurized fluid to one or more operational systems of a machine. The hydraulic system is capable of switching fluid flow in...
US20170002545 HYDRAULIC SYSTEM FOR WORK MACHINE  
When option attachment has not been attached, a reserve flow/direction control valve 8 is made to operate as a center bypass cut valve. When an option attachment has been attached, switching...
US20160238043 HYDRAULIC DRIVING DEVICE  
A hydraulic driving device includes: a hydraulic motor configured to operate by flushing oil from a hydraulic pump through a high pressure oil passage and a low pressure oil passage; a low...
US20160195111 FLUID PRESSURE CONTROL APPARATUS  
A fluid pressure control apparatus includes a pilot control valve configured to control a pilot pressure guided from a pilot pump to the control valve and a load retaining mechanism installed in...
US20160186786 Controller Apparatus for an Electro-Hydraulic Drive Unit  
A drive control device for operating an electro-hydraulic drive which has an electric motor with a variable rotational speed, a hydraulic pump which is driven by the electric motor, a hydraulic...
US20150292527 PRESSURE-BALANCE VALVE FOR BALANCING FLUID FEED TO ACTUATOR CYLINDERS OF A SERVO-CONTROL FOR CONTROLLING ROTOR BLADES OF A ROTORCRAFT  
A pressure-balance valve for balancing the pressures of fluids admitted into the pressure-balance valve via respective second ducts. The pressure-balance valve has both a chamber for guiding...

Matches 1 - 36 out of 36