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7620522 |
Diagnostic device for at least one pneumatic valve actuator arrangement
A diagnostic device for at least one pneumatic valve actuator arrangement, comprises a pressure sensor, a volumetric flow sensor, a control means for producing control signals for the valve...
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7617759 |
Precision load positioner with positive weight deviation indication and over-pressure protection
An apparatus for bidirectionally translating and positioning loads under tension includes a linear hydraulic actuator suspendible from a hoist such as a crane and is useable to support, raise and...
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7607380 |
Fluid pressure actuator
A fluid pressure actuator includes: an actuator body which expands and contracts through supply/discharge of a fluid to generate a driving force; a sensor for detecting a condition of the actuator...
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7552671 |
Cylinder with fiber optical position sensing device and method
An apparatus for sensing movement of a first object relative to a second object. The apparatus includes indicia markings formed on the first object and a sensor capable of reading the indicia...
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7543525 |
Automobile clutch booster
A clutch booster usable for an automobile having a clutch. In one embodiment, the clutch booster includes a booster member coupled with the clutch for engaging or disengaging the clutch from the...
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7520208 |
Drive device comprising a position controller
A drive device comprises a fluid driven drive ( 2 ), which defines a drive space ( 8 ), in which at least one drive piston ( 14 ) is located which is able to be linearly shifted by fluid actuation...
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7518100 |
System and method for detecting a position of a movable element
A system and a method detect a position of a movable element within the interior of the compartment via a light source and/or a light sensor. The light sensor is connected to a platform and/or to a...
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7476842 |
System and method for emitting and/or detecting light within a compartment
A system and a method emit and/or detect light within a compartment via one or more lenses. A light source emits the light in an interior of the compartment via one or more lenses and/or an optical...
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7468522 |
Collar, system and method for detecting a mark on a rod
A collar, a system and a method detect a mark on a rod within an interior of the collar. The mark and the rod move from a first position to a second position within an interior of the collar...
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7466144 |
Microwave measurement system for piston displacement
A microwave measurement system is utilized for the determination of displacement of a piston in a fluid filled cylindrical structure. The piston plus cylindrical encasement of the hydraulic system...
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7456385 |
System and method for detecting an end of and/or a beginning of a stroke
A system and a method detect that a movable element within an interior of a compartment is at an end of a stroke and/or a beginning of the stroke within the interior of the compartment. A switch...
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7451684 |
Actuator device with a microwave position detecting device
An actuator or servo device comprises an actuator member adapted to move linearly in the motion space of an actuator housing, a microwave position detecting device for detecting the position of the...
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7367256 |
Pressure switch control for attachment coupling system
An attachment control system includes an electrical control system and hydraulic control system. The electrical control system interfaces with the hydraulic control system to ensure that attachment...
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7351288 |
Shock absorbing fluidic actuator
According to one aspect of the invention, a fluidic actuator and a control system for the fluidic actuator may be provided. A first component of the actuator may have two openings interconnected by...
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7348542 |
System and method for detecting an intensity of light
A system and a method detect an intensity of light within an interior of a compartment and/or of an end cap to locate a position of a movable element within the interior of the compartment. A...
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7318313 |
Switch
A switch in particular for a master cylinder unit, for opening and/or closing an electrical circuit, for example, for switching on the brake lights, comprises a casing suitable for being housed in...
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7275474 |
Optical position sensing and method
In a variable displacement type hydraulic pump/motor assembly including at least one internally movable component, such as a yoke, a swashplate, and the means for moving the swashplate, the...
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7250753 |
Sensor attachment mechanism for fluid pressure cylinder
Exemplary embodiments of the invention provide a sensor attachment mechanism capable of attaching a position detecting sensor having directivity in a proper direction to a fluid pressure cylinder...
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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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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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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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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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7121185 |
Hydraulic cylinder having a snubbing valve
A hydraulic cylinder has a tube with a first end and a section end. The hydraulic cylinder also has a piston assembly movably disposed within the tube and configured to move between the first and...
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7082869 |
Sensor arrangement for a vacuum brake booster and a vacuum brake booster provided with this sensor arrangement
The invention relates to a sensor arrangement ( 10 ) for a vacuum brake booster with a brake booster housing comprising at least one vacuum chamber and at least one working chamber that is...
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7051639 |
Mounting apparatus and method for cylinder position sensor
A method and apparatus for detecting the position of a rod member of a cylinder assembly are provided. The cylinder assembly may have a cylinder body with a cylinder chamber therein, a gland member...
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7047866 |
Electrical and hydraulic control system for attachment coupling system
An attachment control system includes an electrical control system and hydraulic control system. The electrical control system interfaces with the hydraulic control system to ensure that attachment...
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7004059 |
Hydraulic master cylinder switch
A switch adapted to be positioned on the pushrod of a hydraulic cylinder assembly and including a housing adapted to be positioned against an end of the hydraulic cylinder assembly and including a...
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6952009 |
Apparatus, a system and a method for monitoring a position of a shaft element in a cylinder and an apparatus, a system and a method for cleaning of the shaft element
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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6901840 |
Angular actuator and control therefor
A fluid-powered mechanical actuator having a proximal end and a distal end and having a plurality of hollow tubular elements hingedly connected in end-to-end linked relationship to form a variable...
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6868771 |
Mounting for magnetic field sensors
An arrangement for axially variably mounting a magnetic field sensor in a guide groove arranged on the exterior of an operating cylinder in which a piston reciprocates. The groove is longitudinally...
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6834574 |
Cylinder with optical position sensing device and method
A fluid-pressure actuated piston/cylinder assembly having a sensor capable of reading at least one indicia marking on a piston rod in order to determine the movement and specific location of the...
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6813987 |
Electrohydraulic monitoring device for a dual effect hydraulic cylinder
The invention relates to an electrohydraulic monitoring device for a dual effect hydraulic cylinder in which certain operating pressures must be maintained. A pressure reduction valve is provided...
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6805037 |
Brake booster sensor
The present invention provides a single sensor, preferably of a capacitance type, that detects various conditions of a brake booster and the braking system. In one embodiment, the sensor is...
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6786127 |
Fluid-actuated linear drive
A fluid power operate linear drive possessing a slab housing ( 2 ) with an elongated cross sectional outline, in which a plurality of receiving spaces ( 8 ) are arranged extending in a common...
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6779433 |
Axial piston engine
The invention relates to an axial piston engine ( 1 ) with a housing ( 2 ), inside the housing interior ( 4 ) of which a drive shaft ( 7 ) and a cylinder drum ( 16 ), arranged axially adjacent to...
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6769349 |
Multi-fiber cylinder position sensor using time-of-flight technique
A hydraulic actuator is disclosed having a cylinder with a piston that is moved by hydraulic fluid. A light guide in one end of the cylinder directs a laser beam into the cylinder, and off the...
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6755112 |
Vehicle braking system with a pneumatic brake booster
The present invention relates to a vehicle brake system with a pneumatic brake booster which includes an input member being actuated by a vehicle operator and an output member as well as a control...
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6722261 |
Hydraulic piston position sensor signal processing
A piston position in a cylinder of a hydraulic assembly is measured using microwave pulses. The microwave pulses are launched along a conductor coupled to the piston or cylinder. A sliding member...
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6722260 |
Hydraulic piston position sensor
A piston position in a cylinder of a hydraulic assembly is measured using microwave pulses. The microwave pulses are launched along a conductor coupled to the piston or cylinder. A sliding member...
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6705198 |
Linear drive
A linear drive comprising a housing having a tube body ( 3 ) and a terminally mounted housing cover ( 4 ). In the wall of the tube body ( 3 ) a cavity is located, into which a sensor ( 14 )...
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6691605 |
Piston-cylinder device with at least one position indicating sensor
A pressure medium actuated piston-cylinder device comprises at least one magnetically activated sensor ( 20 ) for detecting the piston position and which is adjustably attached to the cylinder ( 10...
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6612659 |
Intelligent input push rod assembly
An intelligent input push rod assembly for applying an input force from a brake pedal to a power booster of a brake system. The input push rod assembly includes a sensor that is capable of...
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6571681 |
Attachment structure for position-detecting sensor
An attachment structure for a position-detecting sensor includes a sensor attachment mechanism having a rail member which is secured to an outer side surface of a cylinder tube and a holder which...
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6484620 |
Laser based reflective beam cylinder sensor
A hydraulic actuator is disclosed having a cylinder with a piston that is moved by hydraulic fluid. A light guide in one end of the cylinder directs a laser beam into the cylinder, and off the...
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6324845 |
Self contained, supplemental vacuum assist unit for vehicle brake booster
A self contained, supplemental vacuum assist unit is provided for use with a vacuum brake booster and a source of vacuum in a motor vehicle. The unit includes, within a single housing, an electric...
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6318524 |
Piston cylinder unit with a movement determination device
A piston-cylinder unit includes a cylinder with a piston rod guide and a piston rod with a piston axially movably mounted in the cylinder so that the piston rod runs through a hole in the piston...
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6269641 |
Stroke control tool for subterranean well hydraulic actuator assembly
A stroke control tool for controlling the position of a subterranean well hydraulically actuated double acting piston and cylinder actuator assembly. The tool includes hydraulic fluid measuring...
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6267432 |
Hydraulic actuating system for movable parts
A hydraulic actuating system for movable parts, particularly for hinged covers on vehicles, includes at least one or more working cylinders with a piston equipped with sealing means pressing...
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6223530 |
Control device for hydraulic power cylinders
The invention relates to a control device for hydraulic power cylinders, in particular power cylinders of a road truck tailgate, comprising a hydraulic pump (1) driven by a motor (M). Said pump can...
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6199381 |
DC centering of free piston machine
In a free piston machine, a coil is mounted to its housing and magnetically linked to a permanent magnet or electromagnet on its piston member to form a linear motor. The coil and magnet are either...
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