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8261654 Axial piston machine having swivel cradle actuating pistons and displacement limiting devices  
An axial piston machine is provided, which has a swivel cradle, the inclination of which can be modified in relation to a rotational axis of a cylinder drum. A regulation system acts on the swivel...
8262058 Balanced pilot operated check valve  
A valve assembly includes a check valve element in an output chamber. The check valve element opens to permit forward flow of fluid under pressure in the output chamber from an input port to an...
8250863 Heat exchange with compressed gas in energy-storage systems  
In various embodiments, compressed-gas energy storage and recovery systems include a cylinder assembly for compression and/or expansion of gas, a reservoir for storage and/or supply of compressed...
8251098 Slide vane for hydraulic power steering  
The invention relates to a slide vane (20) for a hydraulic power steering of automotive vehicles with a tubular control sleeve (24). Said control sleeve is connected to an output shaft (28) and...
8250965 Jack system with automatic locking of the piston in high position, especially for aircraft  
A jack system provided with a cylinder provided with a first stopper. The jack system also includes: a body hinged about an end of the piston, the body including a second stopper and being able to...
8251189 Railway brake cylinder  
A railway brake cylinder includes a body (11′); a piston (13′) mobile relative to the body (11′) to act on a brake linkage and delimiting with the body (11′) a pressure chamber (10′) adapted to be...
8245507 Hydraulic control device  
A hydraulic control device for moving at least one hydraulic consumer comprises at least one supply line, a discharge line or bypass line to which the hydraulic consumer is connected, and at least...
8241010 Hydraulic reservoir for hydraulic regenerative circuit  
A hydraulic reservoir includes a container having an internal volume, an internal wall dividing the internal volume of the container into a first section and a second section for separately...
8240243 Fluid power linear drive  
A fluid operated linear drive in which on the outer periphery of a centering portion (24) fitting in a housing tube (4) at least one housing cover (5) has an annular groove (28) accommodating an...
8240241 Hydraulic drive system and diagnostic control strategy for improved operation  
A method and apparatus are provided for hydraulic fluid supply between a hydraulic pump and a hydraulic drive unit, switching hydraulic fluid flow direction to the hydraulic drive unit or stopping...
8240240 Cylinder position sensor  
A device for detecting the absolute position of a cylinder rod is provided. A cylinder assembly has a cylinder body with a gland member positioned thereof. The gland member has a rod opening...
8234970 Gasket, cover with gasket, and pneumatic cylinder with cover and gasket  
A gasket includes a damping buffer for a piston that can be charged with a pressure medium and that can be moved back and forth axially in a cylinder pipe and includes at least one static seal for...
8235680 Hydraulic motor having radial cylinders and continuous variable displacement  
A radial cylinder hydraulic motor having continuously variable displacement capabilities includes: oscillating hydraulic cylinders which are driven to oscillate through an eccentric crankpin...
8234863 Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange  
In various embodiments, efficiency of energy storage and recovery systems compressing and expanding gas is improved via heat exchange between the gas and a heat-transfer fluid.
8235681 Opposing swash plate piston pump/motor  
A first swash plate (30) and a second swash plate (40) are disposed on either side of a cylinder block (4), and a plurality of cylinders (6) are disposed in the cylinder block (4). A first piston...
8235107 Hydraulic oil well pumping apparatus  
A hydraulic oil well pumping arrangement employs a compensating type hydraulic pump, a directional valving arrangement and a proportioning valving arrangement. When the directional valve is...
8230830 Electronically controlled hydraulic system for variable actuation of the valves of an internal combustion engine, with fast filling of the high pressure side of the system  
An electronically controlled hydraulic system for variable actuation of the valves of an internal combustion engine is constructed for fast filling of the high pressure side of the system.
8230773 Axial piston compressor, in particular a compressor for the air conditioning system of a motor vehicle  
Axial piston compressor, especially a compressor for the air-conditioning system of a motor vehicle, having a housing and, for drawing in and compressing a coolant, a compressor unit arranged in...
8230772 Spindle with hydraulic passage arrangement and method of manufacture  
A spindle body defining a central axis and having a hydraulic motor assembly operably mounted thereon. At least a portion of the hydraulic motor assembly is rotatable relative to the spindle body...
8230771 Hydraulic arrangement  
A hydraulic arrangement for regulating a lifting mechanism (12) of an agricultural machine (10) is described. The hydraulic arrangement (16) comprises a hydraulic cylinder (24) having a chamber...
8225606 Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression  
The invention relates to systems and methods for rapidly and isothermally expanding and compressing gas in energy storage and recovery systems that use open-air hydraulic-pneumatic cylinder...
8226359 Variable guide vane actuator with thermal management  
A variable guide vane actuator for positioning the guide vanes of a turbine engine in a hypersonic missile uses compressor exhaust to drive a linked, floating piston assembly that is coupled to...
8225707 Hydraulic radial piston engine  
To avoid having to strip down a radial piston engine (1) into its individual components when it is disassembled, a rotary cylinder (5) has a collar (19) on which the rotary cylinder is supported...
8229609 Marine vessel control apparatus, marine vessel propulsion system and marine vessel including the same  
A marine vessel control apparatus is arranged to start and stop engines that are respectively provided in multiple propulsion devices. The marine vessel control apparatus includes multiple...
8225706 Method for controlling a hydraulic cylinder and control system for a work machine  
A method is provided for controlling a hydraulic cylinder, including detecting at least one operating parameter, and variably controlling a communication path between the piston-rod side and...
8220380 Hydraulic unit  
The invention relates to a hydraulic group comprising a reservoir (28) for oil, in which a multiple piston pump (60) is arranged. The individual pumps (61) are cyclically driven by an eccentric...
8215226 Negative pressure booster  
In the negative pressure booster, when in operation, a reaction disc (35) deflects due to the reaction from an output shaft (34) and pushes a pin (28) backward, and the pin (28) pushes a vacuum...
8215227 Detecting of faults in a valve system and a fault tolerant control  
In a method for controlling a valve system controlling an actuator, the first direction of motion of the actuator is controlled solely by the first and the second valve series; or, its second...
8210091 Quick booster  
The invention relates to a brake booster with a short actuating travel, in which booster the three-way valve has a moving valve seat borne by a sleeve (54). The movement of this sleeve is...
8197229 Double-headed piston type compressor  
A double-headed piston type compressor includes front and rear housings, a cylinder block defining therein a crank chamber and a plurality of cylinder bores and having a shaft hole therethrough, a...
8196505 Brake booster  
A brake booster includes a casing divided into a constant pressure chamber and a variable pressure chamber by a diaphragm, a power piston attached to the diaphragm, a disc-shaped stem coupled to...
8191455 Pneumatic actuating drive having integrated electropneumatic position control  
An electropneumatic actuator system for operating assemblies of an internal combustion engine includes a housing, in which an actuator is movably accommodated, which in turn is configured to be...
8192176 Hydraulic fluid supply system having active regulator  
A hydraulic fluid supply system includes an active pressure regulator or feed limit valve with a flow cut-off which may be used with dual clutch transmission hydraulic control systems. The supply...
8191456 Method of driving an hydraulic actuator by means of a pressure controlled proportioning solenoid valve  
A method of driving a hydraulic actuator provided with a pressure-controlled proportioning solenoid valve; the method includes the steps of: determining a first open-loop contribution according to...
8191363 Hydraulic actuator control system for refuse collection vehicle  
A system for controlling motion of a hydraulic actuator on a refuse collection vehicle. The system includes an operator input device configured to produce a proportional electrical signal that is...
8191518 Valvetrain control arrangement  
A valvetrain control arrangement for an internal combustion engine. A fluid-working machine (1) has working chambers (3) of cyclically varying volume, each connected to a piston actuator (4) which...
8186155 Hydraulic energy storage system with accumulator and method of varying charge of same  
A method of varying a charge in an accumulator includes providing an accumulator containing working fluid and gas, providing a reservoir containing gas, transferring gas from the reservoir to the...
8176838 Hydraulic machine arrangement  
A hydraulic machine arrangement includes at least one hydraulic machine having a plurality of pistons reciprocating within corresponding cylinders. The pistons can be driven by a cam to operate...
8176995 Reduced-impact sliding pressure control valve for pneumatic hammer drill  
A method and means of minimizing the effect of elastic valve recoil in impact applications, such as percussive drilling, where sliding spool valves used inside the percussive device are subject to...
8167580 Axial piston machine with hydrostatic support of the holding-down device  
An axial piston machine is provided. A housing of the machine receives an eccentric disk and a rotatably mounted cylinder drum. The drum has cylinders and pistons. The pistons are reciprocatable...
8166915 Device for removing at least one teat cup from a teat of an animal  
A device for removing at least one teat cup (1a) from a teat of an animal includes i) a cylinder (2) provided with a movable piston (3) dividing an inner space of the cylinder in a first...
8166865 Brake boost sensor feeler  
A sensor feeler device for a brake booster. The sensor feeler device (4) includes an axially moveable cylinder (40), the movement of which can be controlled by the control rod which is itself...
8167586 Valve assembly with low resistance pilot shifting  
A valve arrangement for placing a supply of motive fluid in alternating communication with first and second motive fluid chambers. The valve arrangement includes a power valve including a supply...
8161741 System and methods for optimizing efficiency of a hydraulically actuated system  
Systems and methods for efficiently operating a hydraulically actuated device/system are described herein. For example, systems and methods for efficiently operating a gas compression and...
8162632 Fluid pump  
A pump is disclosed, having a pumping chamber in the rotor. The rotor is rotatable between first, second, third and fourth positions. When the rotor is in the first position, an inlet cam assembly...
8156738 Hydrostatic transmission having two axial piston units  
The invention relates to a hydrostatic transmission having two bent axis- or swashplate-type axial piston units which are operated alternately as a pump and as a motor, with the two axial piston...
8151900 Percussion equipment driven by a pressurized incompressible fluid  
A percussion apparatus driven by a pressurized incompressible fluid includes a body with two coaxial bores for slidably mounting of a tool, and separately slidably mounting a striking piston...
8152483 Variable capacity compressor  
The variable capacity compressor has a rotor 21, as a rotating member, fixed to a drive shaft 10 and rotating integrally with the drive shaft 10, a swash plate 24, as a tilting member, tiltably...
8151688 Hydraulic circuit of construction machine  
A throttle path for returning a part of pilot oil to a tank is formed by a tank path provided in a valve block of a control valve and a notch provided in a spool thereof. The above path is opened...
8152477 Electrokinetic pump designs and drug delivery systems  
One embodiment of the present invention provides a piston assembly having a piston housing filled with an electrolyte; a housing within the piston housing that divides the piston housing into a...