Matches 101 - 150 out of 336 < 1 2 3 4 5 6 7 >
Match Document Document Title
6000219 Charging valve arrangement to charge a store  
A load valve apparatus having a control valve which can be connected to a pump and an accumulator and which in a first position connects the pump to the accumulator and in a second position...
5964090 Automatic fluid pressure-intensifying apparatus and method of a hydraulic traveling device  
Disclosed is automatic fluid pressure-intensifying apparatus and method of a hydraulic traveling device for increasing a traveling capability or a pulling capability of a heavy equipment by...
5950429 Hydraulic control valve system with load sensing priority  
A hydraulic fluid is supplied from a tank to a plurality of actuators by a variable displacement pump which produces an output pressure that is a constant amount greater than a pressure at a...
5918558 Dual-pump, flow-isolated hydraulic circuit for an agricultural tractor  
A hydraulic circuit has first and second pumps coupled to first and second directional valves, each controlling work mechanisms such as a hydraulic cylinder and a hydraulic motor. The directional...
5896943 Hydraulic control system for work vehicles  
A hydraulic control system for work vehicles including a control unit to control the steering wheels of a vehicle via a cylinder and a priority valve which by a first load-sensing system controls...
5873244 Positive flow control system  
A positive flow control system is provided that uses open-centered control valves in a series connection to provide priority between different fluid circuits and to provide requested flow...
5873548 Airacraft hydraulic system for improved reliability of integrated hydraulic propulsion controls  
A system (10) is provided for maintaining continuity of hydraulic power from an aircraft engine-driven hydraulic pump (28) to a first set of propulsion control hydraulic loads for controlling the...
5857331 Hydraulic system  
A hydraulic system with a pressure source controllable via a load sensing signal, a pressure sink, at least two working sections, each having a hydraulic consumer and a control valve with a load...
5852935 Control valve  
The invention concerns a control valve with a housing, having a pump connection, a tank connection device, a working connection device and a load pressure connection device, each connected with an...
5836347 Fluid pressure supply system  
A vehicle fluid pressure supply system in which a fluid pressure supply pump (10) is connected via solenoid-operated flow control valve (15) with a plurality of separate fluid pressure operated...
5832729 Hydraulic control system  
A fluid power control system for use in a mini-excavator, in which a first control section (S2) includes first and second control valves respectively connectable to first (2) and second (4)...
5829252 Hydraulic system having tandem hydraulic function  
Pump ports 9p, 10p, 11p, 13p of boom, arm, bucket and first travel directional control valves 9-11, 13 are connected to first and second hydraulic pumps 1a, 1b through feeder lines 93a, 93b; 103a,...
5813312 Hydraulic control apparatus  
A hydraulic control apparatus having two groups and formed by combination of actuator circuits on large flow rate side (a boom cylinder circuit and an arm cylinder circuit) and actuator circuits on...
5813311 Hydraulic control system for hydraulic working machine  
A controller 520 has a data portion 520c in which the relationship between a pump delivery pressure and a target opening area of a variable throttle 300a of a control valve 300 is set such that the...
5806312 Multiple hydraulic distributor device  
A multiple hydraulic distributor device, having an antisaturation function wherein flow of hydraulic fluid is divided independently of load, which includes a hydraulic distributor device having a...
5722190 Priority biased load sense hydraulic system for hydraulic excavators  
A priority biased load sense hydraulic system for hydraulic excavators is provided. The hydraulic system includes first and second variable flow pumps which are coupled in load sense arrangement....
5680759 Straight travelling apparatus for heavy construction equipment  
A straight travelling apparatus for heavy construction equipment, equipped with a travel supplement circuit, including a variable orifice disposed in a fluid line connected to the supply-side of...
5673557 Displacement control system for variable displacement type hydraulic pump  
In a displacement control system for a variable displacement type hydraulic pump for supplying a discharge pressurized fluid of the variable displacement type hydraulic pump to an actuator via a...
5640850 Hydraulic pressure supply and control device for a mobile concrete pump  
A one-piece terminal block (73) is provided as a hydraulic linking element as well as a mechanical carrier for control valves (68 to 72) of a boom control unit, for an operating mode selector valve...
5617724 Hydraulic control system for use in a forklift truck  
A hydraulic control system is provided for use in a forklift truck having an engine, a steering cylinder, a lift cylinder, a tilt cylinder, a steering pump rotatably driven by the engine for...
5615553 Hydraulic circuit with load sensing feature  
A hydraulic circuit has a first PV pump connected to a valve group for powering a plurality of hydraulic mechanisms connected to the group, and a second PF pump connected in the circuit. In the...
5590731 Hydraulic control system providing proportional movement to an attachment of a power machine  
A skid steer loader is adaptable to be used with a hydraulically powered attachment. A hydraulic system in the skid steer loader includes a hydraulic circuit providing fluid under pressure. A first...
5553452 Control system for a jet engine hydraulic system  
A method of controlling a system is adapted to control flow to throat nozzle and vectoring nozzle actuators. The method comprises the steps of summing a plurality of signals representative of flow...
5549361 Electronic-hydraulic brake boost using a power steering supply  
A vehicular brake booster using fluid pressurized by a hydraulic power steering system hydraulic pump. Fluid pressure is controlled by using a pressure regulator in the pump output and by...
5520087 Control device for hydraulically operated machine  
A control device for hydraulically operated machines for carrying out control to move a working unit with priority over other working units. A weight is added to each of the same manipulated amount...
5456077 Remote unloader hydraulic valve system  
A vehicle mounted hydraulic system is provided with a flow control system that allows and maintains sufficient fluid flow through the pump, regardless of pump speed or fluid usage requirements by...
5446979 Hydraulic circuit system for civil engineering and construction machines  
The hydraulic circuit system for civil engineering and construction machines includes a first pressure adjusting device (130) arranged between first variable restrictors (107, 107a) of a left...
5413452 Hydraulic system for a backhoe apparatus  
A hydraulic system suited for use with a backhoe apparatus and which is configured to automatically direct a priority flow of actuating fluid from an actuating fluid source to hydraulic motors used...
5398594 Volume flow control for hydraulic systems of vehicles, especially for steering devices of motor vehicles  
A volume flow control for a hydraulic system of a vehicle has a pump for supplying a main consuming device and an auxiliary consuming device with a hydraulic medium. A valve having a main...
5392539 Hydraulic drive system for construction machine  
In a hydraulic drive system for a construction machine, first flow control mechanism includes first and second flow control valves (11a, 11b) and first interlock mechanism (54, 55) for interlocking...
5317870 Pressure source for pressure device  
A pressure source for a pressure device has a pump for pumping fluid from a tank, an accumulator connected to the pump and to a pressure device, a device for detecting the pressure in the...
5315829 Hydraulic system for hydraulic operators  
The invention relates to a hydraulic system for hydraulic operators for delivering pressurized fluid to a blower drive means and to the hydraulic operators of a hydraulic machine, comprising a...
5315826 Hydraulic drive system and directional control valve  
A plurality of directional control valves (5, 6) respectively disposed between a hydraulic pump (50) and a plurality of actuators (3, 4) each comprises a pump port (9), a pressure chamber (10), a...
5289679 Hydraulic drive system with pressure compensating valve  
A hydraulic drive system for a construction machine comprising a plurality of distribution compensating valves (7a, 7b) for controlling the respective differential pressures across the plurality of...
5289680 Two pump hydraulic system with relief valves having different relief pressures  
A hydraulic circuit for a working vehicle comprising a first pump, a second pump, a first actuator, a second actuator, and a selector valve having a plurality of control positions. The selector...
5285641 Flow dividing pump  
A compact and light flow dividing pump is disclosed. The pump includes a housing having an end plate attached to one end thereof. The end plate has a fluid suction port and a pair of fluid...
5279121 Flow control valve with pilot operation and pressure compensation  
A pilot-actuated, pressure-compensated flow and directional control valve assembly (11) is provided in which a main valve spool (95) is positioned in response to a pressure differential between a...
5271227 Hydraulic apparatus with pressure compensating valves  
In the hydraulic apparatus (1) according to a first aspect of the present invention, mid-pressures between the inlet side and outlet side pressures of a first and a second pressure compensating...
5259192 Hydraulic circuit system  
This invention provides a hydraulic circuit system capable of reducing the flow rate distribution error in supplying pressurized fluid from a single hydraulic pump into a plurality of hydraulic...
5249421 Hydraulic control apparatus with mode selection  
An apparatus for controllably actuating at least two hydraulic actuator is provided. The apparatus controllably provides pressurized hydraulic fluid to the hydraulic actuators through closed center...
5245827 Supply valve arrangement for closed center hydraulic system  
A hydraulic system includes a hydraulic pump which provides pressurized fluid at an output port as a function of pressure in a load sensing port, a hydraulic reservoir, and a load pressure sensing...
5215158 Hydraulic steering system for vehicles  
The steering system of a motor vehicle includes a two chamber steering motor having the application of pressurized fluid applied thereto through change over valves in one position by the way of a...
5212950 Hydraulic circuit with pilot pressure controlled bypass  
This invention provides a hydraulic circuit apparatus arranged such that when each of operating valves is operated suddenly, the stability of each of actuators is improved, and when the operating...
5209063 Hydraulic circuit utilizing a compensator pressure selecting value  
A hydraulic circuit arranged to prevent the load pressure in one of the hydraulic actuators at the time of starting from becoming abnormally high thereby preventing fluid under pressure from being...
5201176 Hydraulic control circuit and hydraulic control apparatus therefor  
A Hydraulic control circuit and a hydraulic control apparatus therefor are disclosed to preferentially feed fluid in a controlled amount or below to a first circuit system and feed fluid in an...
5201803 Hydraulic system for a vehicle  
Disclosed is a hydraulic system for driving both an air conditioning compressor and a power steering mechanism. Pressured fluid discharged from a variable capacity pump is supplied to a hydraulic...
5179835 Brake valve for use in load sensing hydraulic system  
A brake valve (45) is disclosed of the type which permits communication from a source (11) of pressurized fluid to a brake actuator (47) in response to manual movement of a valve spool (57) from a...
5167121 Proportional hydraulic control  
A hydraulic control system for a multi-linked manipulator arm monitors the desired flow of hydraulic fluid to each of the actuators for the links of the manipulator, and when the desired flow to...
5152143 Hydraulic drive system  
A hydraulic drive system comprising a prime mover (21), a hydraulic pump (22) driven by the prime mover, a plurality of hydraulic actuators (23-28) driven by hydraulic fluid supplied from the...
5148676 Confluence valve circuit of a hydraulic excavator  
A service valve circuit of a hydraulic excavator connected beforehand for use in controlling a special attachment in addition to a prescribed actuator control valve. The service valve circuit...
Matches 101 - 150 out of 336 < 1 2 3 4 5 6 7 >