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7225721 |
Hydraulic motor
The motor comprises a cam and a cylinder block mounted to rotate one relative to the other. The cam comprises a plurality of cam lobes and the cylinder block has a plurality of cylinders slidably...
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7219593 |
Saturation-proof hydraulic control device that is composed of two or more elements
The invention refers to the field of hydraulic control devices and refers to a saturation-proof hydraulic control device with two or more elements; each element is composed of a six-way,...
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7219691 |
Control valve positioner mounting system
A positioner for a control valve assembly is disclosed wherein the positioner is mounted internally to thus protect the positioner from damage stemming from environmental, impact, or other outside...
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7219592 |
Valve arrangement and hydraulic drive
The invention concerns a valve arrangement for controlling a hydraulic drive, the supply to and the outflow from the hydraulic drive being separately controllable. It is endeavoured to realise...
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7216579 |
Variable flow control devices, related applications, and related methods
Devices for adjustably controlling a flow of fluid through a common passage and through first and second auxiliary passages are disclosed. The flow control devices may be used for controlling the...
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7216577 |
Vacuum booster with low force loss
A vacuum booster includes a housing defining a control volume in which a movable diaphragm separates the control volume into an apply chamber and a vacuum chamber. A power piston extends through...
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7216581 |
Piston locking actuator
A locking actuator may be locked in an extended position. A piston with a first and a second end defines a recess that originates proximate to the first end. A strut is adapted to at least...
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7216578 |
Hydraulic actuating device
The invention relates to a hydraulic actuating device for a movable component of a vehicle, in particular a closure element for closing an opening in a vehicle body, such as for example a movable...
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7213499 |
Spacer for a boost unit
A spacer secured to a dash panel offsets a boost unit of a brake system into an engine compartment. The spacer has a cylindrical body with a u-shaped space through which air from the engine...
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7213502 |
Robustly stable servo-controlled metering poppet valve
A poppet valve assembly with a control chamber that can be fluidly connected to a number of different hydraulic ports via a pilot valve assembly. The poppet valve assembly includes a poppet valve...
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7213500 |
Pneumatic tool
A pneumatic tool includes a shell defining first, second, third and fourth communicating spaces, a channel communicated with the second space, an inlet communicated with the channel, and an outlet...
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7213612 |
High pressure ball-poppet control valve with flow control
A control valve for operating a fluid-actuated device includes a fluid inlet, a fluid outlet and a passage in fluid communication between the fluid inlet and the fluid outlet, the passage defining...
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7210394 |
Method and apparatus for controlling air cylinder
A method for controlling an air cylinder such that air is supplied to and exhausted from pressure chambers of the air cylinder by air servo valves. Pressures in the pressure chambers are detected...
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7210396 |
Valve having a hysteretic filtered actuation command
The present disclosure is directed to a valve system including a controller and a valve including a valve element and a valve bore. The valve element is selectively movable relative to the valve...
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7210393 |
Progressive-starting unit for pneumatic systems
A progressive-starting unit for pneumatic circuits comprises a line inlet and a line outlet interconnected with each other by a regulating valve that is piloted by a pneumatic piloting inlet. The...
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7210395 |
System for handling a tool at a vehicle
The invention relates to a system for handling an implement on a vehicle which comprises a frame. The system comprises a lifting apparatus arranged between the frame and the implement for raising...
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7207261 |
Vacuum-operated booster
Reaction force from a reaction member is divided and transmitted to a front shaft portion of a plunger via abutment member and to a flange portion of the plunger via a spring unit. The spring unit...
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7207177 |
Position control device for an electrical-fluid power drive and a method of positioning
A method and a position control device for an electrical-fluid power drive comprising a fluid power and an electrical actuator for driving a force output point. The invention contemplates the...
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7207116 |
Air saw
A main spindle of an air saw is reciprocated by sliding a piston in a cylinder chamber with the pressure of air supplied to the cylinder chamber via an air supply path so as to alternately apply...
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7207260 |
Reciprocating hydraulic machine, especially a motor, and dosing apparatus comprising such a motor
A hydraulic motor comprises a body and a piston able to slide in a reciprocating movement in a cylindrical housing of the body. A chamber (C1, C2) is formed on each side of the piston and hydraulic...
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7207259 |
Actuator for actuating onboard devices on a sailboat
An actuator (100) for actuating an onboard device (200) on a sailboat (300), comprises: a piston (2) slidably mounted within a cylinder (1) and movable between a first operating position, in which...
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7207173 |
Method and apparatus for warm up control of autonomous inverter-driven hydraulic unit
An apparatus for warm up control of an autonomous inverter-driven hydraulic unit has a warm up control section and a switch section. The warm up control section performs a predetermined process...
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7204186 |
Fluid circuit for feeding primary and auxiliary users with preset priorities
Fluid-dynamic circuit for supplying primary and auxiliary uses with preset priorities comprises a pressurised fluid source, at least one first use with primary priority, at least one second use...
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7204035 |
Displacement measuring system for a piston-cylinder assembly
A piston rod is guided with freedom of axial movement in a cylinder, where the position of the piston rod is detected by a first position-measuring device, which travels along with the piston rod,...
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7204184 |
Guide system with pneumatic stop for a movable component
In a guide system with a pneumatic stop structure comprising a cylinder with a piston including a piston seal element movably disposed in the cylinder and a piston rod connected to the piston and...
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7204185 |
Hydraulic system having a pressure compensator
A hydraulic system having a source of pressurized fluid and a fluid actuator with a first chamber and a second chamber. The hydraulic system also has a first valve configured to selectively fluidly...
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7201096 |
Linear motor having a magnetically biased neutral position
A linear motor is provided including a stator having at least one electromagnetic coil and a rotor having at least one permanent magnet. The rotor is movable toward at least a first position when...
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7201095 |
Vehicle system to recapture kinetic energy
A fluid drive system that can be used to drive a vehicle and has energy regeneration and storage capabilities. The fluid drive system includes an electrical energy supply source mounted on the...
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7200993 |
Electro-hydraulic steering control system
An electro-hydraulic steering control system for directing fluid to steering actuators on a work machine may include a main valve configured to control fluid flow to the steering actuators. Left...
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7201456 |
Pneumatic brake booster
A pneumatic brake booster for a motor vehicle, comprising a piston (22) mounted between a control rod (24) actuated by a brake pedal and a push rod (34) actuating a piston of a brake master...
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7197872 |
Hydraulic circuit in work vehicle
A hydraulic circuit includes a control valve that controls flow of pressure oil from a hydraulic source to work hydraulic cylinders, an operating device that issues a command for drive of the...
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7198116 |
Wholly air-controlled impact mechanism for high-speed energy-accumulating pneumatic wrench
A wholly air-controlled impact mechanism invented for creating a more compact and powerful pneumatic wrench comprises a flying hammer, a pressure impulse generator and a pressure container...
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7198474 |
Pump having shape memory actuator and fuel cell system including the same
A pump having a linearly movable shaft, a rotatable hub operably connected to the shaft, and shape memory actuator operably connected to the rotatable hub, and a fuel cell system including the same.
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7194948 |
Secondary pump of brake
An adjustor for a secondary pump of a brake includes a stationary plate attached to the secondary pump, a cylinder attached to the stationary plate, a piston movable in the cylinder, a rod extended...
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7194946 |
Pneumatic servomotor for power-assisted braking, the servomotor having a crimped diaphragm
A pneumatic servomotor (12) for power-assisted braking for a motor vehicle, which servomotor is of the type having a substantially cylindrical rigid casing (16) inside which a moving transverse...
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7194990 |
Electro-hydraulic engine valve actuation
Hydraulic actuator as an element of a system for controlling an engine valve is presented. The actuator includes a fluidic actuation chamber, defined by an actuation piston that increases chamber...
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7191595 |
Lubrication device
Method and arrangement for providing a device for delivering lubricant (10a, 10b) to at least one lubrication point (17) and which includes a reservoir (9) for lubricant (10a, 10b) connected to the...
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7188474 |
Reciprocating engine and inlet system therefor
The invention relates to a reciprocating engine and a working fluid inlet system therefore. The engine includes at least one cylinder with a reciprocating piston therein and a variable volume...
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7185673 |
Safety device for fluid operated machines
The supply of operating air or oil to a press, shears or like machine is controlled by a pair of spool valves connected in series and each operates a pair of switches. The switches connect DC...
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7185579 |
Hydraulic radial piston motor
A hydraulic motor having radial pistons, and comprising a cam, a cylinder block and a distributor. The cylinders of the cylinder block are connected to communication orifices (32A) situated in a...
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7185576 |
Hydraulic servo-steering valve with steering moment superimposition
A servo-steering valve for a hydraulic servo-steering arrangement has an input shaft, an output shaft, a torsion rod which biases the input shaft and the output shaft relative to each other into a...
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7182097 |
Anti-saturation directional control valve composed of two or more sections with pressure selector compensators
The invention relates to the field of hydraulic directional control valves and refers to an anti-saturation directional control valve (V) composed of two or more sections in each of whom there is a...
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7178489 |
Variable valve system of internal combustion engine and hydraulic actuator
In a hydraulic actuator comprising a hydraulic piston, a hydraulic cylinder and a hydraulic pressure source wherein said hydraulic piston has a larger area exposed to pressure on the side of the...
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7178446 |
Cylinder rod with position sensor surface markings
A cylinder rod with wear-resistant surface markings is provided. The cylinder rod may include a rod substrate, a thermal-spray coating disposed on a surface of the substrate, and one or more...
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7178447 |
Control valve and a method for a percussion device with a working cycle involving several coupling moments
The invention relates to a control valve, a percussion device and a method of controlling a working cycle of a percussion device. A percussion device (1) for breaking rock includes an impact...
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7180053 |
Apparatus, a system and method for determining a position within a cylinder
An apparatus, a system and a method are provided for monitoring position of a machine element within a mechanical system and/or cleaning a machine element. A light source and sensor may be...
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7178448 |
Air servo cylinder apparatus and controlling method therefor
A method for controlling an air servo cylinder apparatus includes an advancing process of advancing a piston up to a target position by controlling, by a controller, servo valves individually...
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7174825 |
Hydraulic power steering apparatus
In a hydraulic power steering apparatus, when the relative rotation between input and output shafts which are connected by a torsion bar is converted into the relative rotation between an outer...
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7174826 |
Hydraulic crowd control mechanism for a mining shovel
A crowd control mechanism for a power shovel includes an extendible dipper handle having an extended position and a retracted position. A double acting hydraulic cylinder having a an extendible ram...
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7177709 |
Controller for underground mining
A controller is disclosed for control operations in underground mining, especially for controllers to control support shields. The controller utilizes a central unit with a microprocessor and...
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