Match Document Document Title
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...
7475537 Maintaining the position of an electro-hydraulic servo valve controlled device upon loss of position command  
A valve that keeps a electro-hydraulic servo valve (EHSV) controlled device such as a fuel metering valve or actuator at the last commanded position upon loss of input command in the EHSV is...
7472638 Hydraulic system with an actuator having independent meter-in meter-out control  
A fluid circuit is provided to independently control the flow of fluid into and out of each end of an actuator. This is accomplished by having two different independently controlled valves...
7472968 Vacuum type brake booster  
In a vacuum type brake booster, the reaction of output transmitted from an output shaft to a reaction member is transmitted to a valve body, a plunger, and a stepped pin. A valve mechanism, which...
7470116 Axial piston machine  
What is disclosed is an axial-piston machine having at least one swash plate and one cylinder drum supported thereon, which includes a multiplicity of cylinder sleeves. To the cylinder sleeves a...
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...
7467644 Remote controller for heavy construction machines with follower pushrod  
The invention relates to a remote controller for heavy construction machines with a body, comprising a cavity, running between a first outlet end and a base, a first pushrod, running between a...
7464493 Work machine  
A work machine is provided having a starter motor for starting a prime mover, which without provision of any special hydraulic equipment, allows for draining pressure oil that still remains in a...
7464635 Percussion device with a control valve for two alternately striking pistons  
The invention relates to a percussion device comprising two percussion pistons alternately making a percussion motion and a control valve for controlling the percussion pistons. The control valve...
7458307 Hydraulic control for a longwall support  
A hydraulic control for a longwall support with a plurality of face support frameworks (1-3), which are adapted to be actuated in the sense of longwall support functions, in particular in the...
7458310 Asymmetric volume booster arrangement for valve actuator  
An asymmetric volume booster assembly includes an actuator movable in a first direction and a second direction, a first booster in fluid communication with the actuator, and a second booster in...
7458308 Multistaged telescope boom  
A multistaged telescope boom, where a hydraulic unit, comprising a piston and a cylinder, is arranged between successive, telescopic arms, comprises a hydraulic system connecting to said hydraulic...
7458312 Axial piston machine for independent delivery into a plurality of hydraulic circuits  
The invention relates to an axial piston machine having a first group of pistons (34.1) for delivering into a first hydraulic circuit and a second group of pistons (34.2) for delivering into a...
7458212 Back-pressure valve and actuation system  
A back-pressure valve comprises a case having first and second oil chambers through which oil passes. A piston is slidably accommodated within the case to partition the first oil chamber and the...
7458309 Reciprocating pump, system or reciprocating pumps, and method of driving reciprocating pumps  
Reciprocating pumps are disclosed. Particularly, reciprocating pumps including pressure chambers and fluid chambers defined by flexible members are disclosed. The volume of the pressure chambers...
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...
7455494 Control circuit for an attachment mounting device  
A control circuit for an attachment mounting device that has a closed position for securing an implement and an opened position for releasing an implement. The control circuit includes at least...
7454909 Impedance shaping element for a control system  
An impedance shaping element (or more simply, an impedance shaper) physically alters or shapes the mechanical impedance of a drive system as it appears from an interface and facilitates use of...
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...
7451790 Device for controlling hydraulic power units  
An arrangement for controlling two drive units which interact with one another, one of which includes a hydraulically driven motor (2). The motor drives a varying load, and one or more valves (6,...
7451685 Hydraulic control system with cross function regeneration  
A system operates a hydraulic actuator, such as a cylinder, in one of several modes that include powered extension and retraction, self-powering regeneration modes in which fluid exhausting from...
7451686 Fluid system with signal-mimicking device and associated method  
A fluid system comprises a static LS valve, a dynamic LS valve, a priority valve biased to preferentially supply pressurized fluid to both the static LS valve and the dynamic LS valve, and a...
7448308 Vacuum type booster device  
A valve piston 8 of a vacuum type booster device is provided with a bypass passage 51 which is defined between a sound-absorbing member 27 and an input rod 23 to communicate directly with the...
7444813 Volume-conversion techniques for active-materials-based morphing structures  
Described is a volume-conversion structure for causing a volume transfer. The volume-conversion structure includes a first reservoir and a second reservoir. The first reservoir includes a first...
7444922 Fastening assembly, fastener, and fluid pressure cylinder unit  
Each of two members to be fastened has a connecting surface, a communication groove opening on the connecting surface, and an engagement groove communicating with the communication groove and...
7444920 Valve arrangement for the activation of a structural element  
The valve arrangement for the activation of a structural element has three inlet switching valves through which a pressure-loaded medium can be conducted. These inlet switching valves are...
7441406 Fluid circuit and industrial truck having a fluid circuit  
The invention relates to a fluid circuit for load displacement, having a fluid supply line for conveying fluid from a fluid tank by means of a fluid pump to at least one fluid store of a consumer,...
7441407 Hydraulic drive control device  
A hydraulic drive control device which is capable of translating the effect of oil pressure loss reduction into the effect of fuel consumption reduction that is very real to the user. The...
7437872 Object separating apparatus using gas  
An object separating apparatus uses gas and has a hollow housing with a closed end connected to a first object, and an opened end. An axially movable cylinder is installed at an inner space of the...
7438029 Piston waveform shaping  
An assembly includes at least one piston, a rotating member, a transition arm, and a mechanism. The transition arm is configured to translate between rotational movement of the rotating member and...
7438086 Dynamic fluid power monitoring system for separate actuators  
A control valve apparatus couples pressurized fluid to first and second actuators using first and second double valves. The first double valve includes first and second crossover passages and...
7434503 Pressure regulating device for a percussive hydraulic apparatus  
A percussive apparatus comprises a body inside of which a striking piston is mounted in a cylinder bore. Two axially offset pieces are mounted inside the cylinder bore of the body while being...
7434394 Hydraulic drive device  
To permit using hold-side pressure oil in a first hydraulic cylinder for the acceleration of a second hydraulic cylinder upon performing a combined operation of the first and second hydraulic...
7434393 Control system and method for supplying pressure means to at least two hydraulic consumers  
Disclosed are a control arrangement and a method for the pressure medium supply of at least two hydraulic consumers that are supplied with pressure medium through the intermediary of a variable...
7434392 Configurable hydraulic system for agricultural tractor and implement combination  
When different implements are attached to an agricultural tractor, various hydraulic actuators on the implement are operated by connection to the hydraulic system on the tractor. A single...
7430954 Work machine  
A work machine includes an attachment movable by an actuator, an operational member for operating the attachment through the actuator; and a controller operable to output an operation signal for...
7430953 Loading implement and process for loading implement  
A loading implement and method of operating a loading implement for the adjustment of a floating condition of a boom of the loading implement. The loading implement includes a hydraulic...
7428861 Valve for hydraulic props of shield-type support frames, and shield-type support frame  
The invention relates to a valve 120, especially a check valve, for hydraulic plungers (3) of shield-type support frames in underground mining with a valve housing 121 and a switchable valve...
7426884 Circuit arrangement  
A circuit arrangement includes a load sensing system (LS) with individual loads (10,14) arranged in series forming a series section, and in parallel forming a parallel section. A hydraulic supply...
7424846 Pneumatically static balancer for machine tool  
A pneumatically static balancer for a machine tool counterbalances or lightens a gravitational load generated by an own weight of a vertically moving driven member. The pneumatically static...
7421938 Positioner for a fluid actuator  
A positioner for a fluid actuator comprising an electronics assembly designed for setpoint/actual value comparison and for outputting a feedback control signal includes a current/pressure...
7421986 Rotary radial internal combustion piston engine  
The engine comprises a housing, a rotor, which is mounted in the housing for rotation about its axis. The rotor has a pair radially opposite cylinders spaced radially and apart from its axis of...
7419134 Valve actuation assembly  
A valve actuation assembly includes a housing and a vane connected to a shaft. The vane is at least partially disposed within the housing. The valve actuation assembly further includes a valve...
7415919 Series hydraulic circuit for controlling operation of multiple cutting decks of a tractor  
A series hydraulic circuit for permitting motorized operation and independent control of a plurality of cutting decks of a mower. The circuit allows separate operation of one of the decks while...
7415989 Spool activated lock-out valve for a hydraulic actuator load check valve  
A check valve system controls the flow of fluid between a spool valve and a hydraulic actuator and includes a pilot operated check valve that is controlled by a lock-out valve. The check valve has...
7415376 Valve tester control enhancements  
A valve tester system is disclosed that comprises a valve tester assembly for rotating a valve stem of a valve. The valve tester assembly may include a support, a rotation element mounted on the...
7412919 Hydraulic force control system for clamping assembly  
A hydraulic force control system is disclosed for controlling the clamping force applied to a load by the clamp arms of a clamping attachment of a load-lifting vehicle to prevent the arms from...
7409828 Control device  
Control device 1 having a changeover valve 5, a pump 4 delivering operating medium, in particular a motor-operated pump or a hand pump, connection devices for connecting the control device 1 to at...
7409830 Fuel-cell actuated mechanical device  
A method generates mechanical energy by storing water in a fuel-cell and a pressure equalization device. The water stored in the fuel-cell is electrolyzed into hydrogen gas and oxygen gas, which...
7409932 Sliding joint for variable compression ratio device  
A barrel-type internal combustion engine includes a power output shaft assembly with a sliding joint. A power output shaft has a pair of spaced apart bearing surfaces and a plurality of radial...