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Patent Searching and Data


Matches 651 - 700 out of 33,109

Document Document Title
WO/2013/047062A1
A surplus flow control unit (50) controls an inverter (6): in a manner such that when the flow discharged from a pump (1) is a high flow, the surplus flow from a relief valve (3) is a low surplus flow; and in a manner such that when the ...  
WO/2013/046660A1
The invention is designed to further reduce the size of gas supply lines and gas apparatuses as well as to further facilitate maintenance of various machines. The invention is a supply apparatus in which supply lines are formed by a gas ...  
WO/2013/041256A1
The invention relates to a fluid system for a machine for producing a fiber web, in particular a paper, tissue, or cardboard machine. The system has at least one actuator (1), which can be driven with a working fluid, and at least one di...  
WO/2013/040780A1
Disclosed is a control system for a variable displacement pump, which system comprises a variable displacement pump control mechanism (1), an oil outlet pipeline (11) of which variable displacement pump control mechanism is in communicat...  
WO/2013/040872A1
A hydraulic control valve, a dual-cylinder extension system and an aerial work engineering machine. The control valve comprises a flow distributing and collecting valve, and control valve body is provided with a first oil opening, a seco...  
WO/2013/042484A1
The present invention is a hydraulic control device that controls a hydraulic pump in a construction machine for which a hydraulic actuator is connected to the hydraulic pump via a closed-center type direction-switching valve, and the po...  
WO/2013/042483A1
The present invention is a hydraulic control device that controls an unload valve control means and a hydraulic pump in a construction machine for which a hydraulic actuator is connected to a hydraulic pump via a closed-center type direc...  
WO/2013/040767A1
Disclosed is a gate-type concrete pump and a pumping control system therefor. The pumping control system for the gate-type concrete pump comprises a gate control system (10) and a main hydraulic cylinder control system (20), the gate con...  
WO/2013/037198A1
Disclosed in the present invention is a water plunger pump has two plunger groups (1, 2) each comprised bynsists of a water cylinder (11, 12) and an oil cylinder (12, 22). A water cylinder piston and an oil cylinder piston of each plunge...  
WO/2013/035484A1
A work machine configured such that the maximum value for absorption torque for a hydraulic pump is changed to a higher value when the work machine is in a specified state, and wherein the issues occurring when an operation lever is oper...  
WO/2013/035815A1
A hybrid excavator as in an embodiment of this invention is provided with a main pump (14), a hydraulic pump and motor (310) using hydraulic oil flowing out from a boom cylinder (7) to function as a hydraulic motor and to function as a h...  
WO/2013/033884A1
Provided are concrete pumping equipment and a hydraulic system thereof, wherein the hydraulic system comprises: a first hydraulic subsystem comprising a first pump (5) and at least one first actuator (6), with a first multi-way reversing...  
WO/2013/035521A1
Provided is a hydraulic system for a work machine, whereby responsiveness during low-temperature operation of remote control valves that pilot-operate pilot switching valves for hydraulic actuator control can be secured. A warm-air circu...  
WO/2013/029255A1
Disclosed in the present invention are a speed control method, device, system for an electro-hydraulic proportional valve and engineering machinery with the same. The method comprises: receiving the expected speed; comparing the expected...  
WO/2013/031768A1
A hydraulic drive device for performing load sensing control. The hydraulic drive device fulfills the same function as devices provided with an unload valve, recovers the energy of hydraulic oil discharged to a tank from a main pump, and...  
WO/2013/029254A1
Disclosed in the present invention are a speed control method, device, system for an electro-hydraulic proportional valve and engineering machinery with the same. The method comprises: obtaining the actual speed of a hydraulic execution ...  
WO/2013/027620A1
In this hydraulic drive system (1), a hydraulic-oil path (15) forms a closed circuit between a hydraulic pump (10) and a hydraulic cylinder (14). When the hydraulic pump (10) supplies a hydraulic oil to the hydraulic cylinder (14) via a ...  
WO/2013/026189A1
Disclosed are a concrete pump truck and a hydraulic control system thereof. The hydraulic control system includes: a first hydraulic pump (11); a flow control assembly (2) of which an input end is connected with an oil outlet of the firs...  
WO/2013/027619A1
In this hydraulic drive system, a hydraulic-oil path forms a closed circuit between a main pump and a hydraulic cylinder. A charge pump replenishes the hydraulic oil in the hydraulic-oil path. A pump control unit performs flow-rate reduc...  
WO/2013/027618A1
In this hydraulic shovel, a hydraulic cylinder drives a boom via a hydraulic oil discharged from a first hydraulic pump. A first hydraulic circuit connects the first hydraulic pump and the hydraulic cylinder, forming a closed circuit the...  
WO/2013/023381A1
Disclosed are a hydraulic oil flow distribution method and a device thereof for hydraulic system. The hydraulic system includes multiple oil passages and an oil pump from which hydraulic oil is supplied to the multiple oil passages. The ...  
WO/2013/023366A1
A brake valve assembly comprises an accumulator (52) for storing oil, a pressure detector for detecting pressure of the oil in the accumulator, a liquid charging valve (40a, 40b) arranged on a liquid charging oil passage of the accumulat...  
WO/2013/023454A1
A pumping device comprises: a first pumping cylinder (1) and a second pumping cylinder (2), a first piston (31) being disposed in the first pumping cylinder (1) and a second piston (32) being disposed in the second pumping cylinder (2); ...  
WO/2013/021404A2
Hydraulic circuit for working machines comprising a power unit (P) for pressurizing a hydraulic fluid, a unit of distribution (D) comprising a plurality of proportional valves downstream of the power unit (P), a control unit (C) connecte...  
WO/2013/021963A1
A vibration damping device for a railway vehicle comprises: an actuator having a cylinder which is connected to a bogie of the railway vehicle, a piston, a rod which is connected to both the piston and the vehicle body, a rod-side chambe...  
WO/2013/021404A3
Hydraulic circuit for working machines comprising a power unit (P) for pressurizing a hydraulic fluid, a unit of distribution (D) comprising a plurality of proportional valves downstream of the power unit (P), a control unit (C) connecte...  
WO/2013/021692A1
The provided backhoe loader exhibits a decreased load on a hydraulic pump and improved fuel economy. This backhoe loader is provided with: a transmission (6); a driver compartment (11) having a driver seat (16) therein that is capable of...  
WO/2013/018271A1
A hydraulic circuit for construction machinery, equipped with: multiple hydraulic pumps; a remote control valve; a main circuit having the hydraulic pumps as the hydraulic pressure source and containing multiple hydraulic actuators and m...  
WO/2013/017141A1
The invention relates to a control device (1) for a working fluid for operating a hydraulic drive (11) such as is used, in particular, for a lift. Said control device (1) comprises a flow path (6) for directing a volume flow of the worki...  
WO/2013/014224A3
An arrangement (2) for selectively making available hydraulic power in separate hydraulic circuits comprises two displacement machines (4, 6), two free-wheels (8, 10) and a drive unit (12) that is preferably arranged between the displace...  
WO/2013/015022A1
Provided is a construction machine capable of obtaining a great fuel consumption reduction effect, by efficiently using recovered energy. The construction machine comprises: at least two actuators (7, 8); a main pump (3) that generates...  
WO/2013/010269A1
An actuator for actuating a plunger of a valve is provided. The actuator has an inlet and includes first and second hollow caps. A main actuation assembly is provided between the caps. The main actuation assembly includes a deformable di...  
WO/2013/007260A1
A press table (8) adapted for mounting in a press (2) and for mounting a pressing tool, including a pressing unit (24) comprising a first actuator (26) with a displaceable first pressing cylinder (32) for actuating the pressing tool with...  
WO/2013/003998A1
A hydraulic control loop circuit comprising an actuator element (1) and a buffer loop circuit (100) parallel-connected to the actuator element (1). The buffer loop circuit (100) comprises relief valves (51 and 52; 81 and 82) and buffer c...  
WO/2013/003997A1
A hydraulic control loop circuit. The hydraulic control loop circuit comprises a directional control valve (10) having a bypass throttle loop circuit and an actuator element (11) connected to the directional control valve (10). The hydra...  
WO/2013/005393A1
A construction machine comprises: a rotation motor for rotationally driving the upper rotating body relative to the lower traveling body; a working attachment having a boom, a boom cylinder, an arm, and an arm cylinder; a hydraulic actua...  
WO/2013/004690A1
The invention proceeds from a pneumatic actuating drive (1) with a pneumatic adjusting unit (10) with a pneumatically drivable adjusting element (11) and with a damping unit (20), wherein the adjusting element (11) is in an operative con...  
WO/2013/006423A3
A pump system includes a closed-loop fluid circuit and an open-loop fluid circuit. The closed-loop fluid circuit includes a motor for rotating a first component connected to the closed-loop fluid circuit. A closed-loop pump drives the mo...  
WO/2013/000168A1
Disclosed is a control method for a hydraulic motor including steps as follows: during the shifting of the hydraulic motor between high and low speed, an oil inlet of a variable mechanism receives a continuous proportion hydraulic signal...  
WO/2013/003048A3
A hydraulic control system (50) for a machine (10) is disclosed. The hydraulic control system may have a pump (58) configured to pressurize fluid, and a motor (49) driven by a flow of pressurized fluid from the pump. The hydraulic contro...  
WO/2013/002429A1
Provided is a hydraulic control valve in which a center bypass passage is not blocked, but is unloaded when a swing and an arm are operated at the same time to prevent the pressure in a hydraulic pump from being increased. The hydraulic ...  
WO/2012/175061A1
The invention relates to a hydraulic system, comprising a system pressure for supplying consumer pressure to a consumer and a valve device. The invention is characterized in that the valve device comprises two valves, each having an inle...  
WO/2012/174936A1
A small displacement start control loop for a main pump and a control method thereof. The control loop comprises a controller (1) and a hydraulic loop (2). The hydraulic loop (2) comprises a first solenoid valve (21), a second solenoid v...  
WO/2012/175792A1
Invention relates to a fluid flow control device for an internal combustion piston engine, which engine com-prises fluid flow system having a main fluid channel and a branch channel which branches from the main fluid channel, and in whic...  
WO/2012/176314A1
The present invention provides an electro-hydraulic hybrid drive device (100) that drives a hydraulic cylinder (500). This electro-hydraulic hybrid drive device (100) is equipped with: a hydraulic pump (110) capable of rotation in both t...  
WO/2012/173005A1
The present invention provides an extrusion press with which it is possible to eliminate nonuniformity in the degree of dynamic/thermal fatigue of electrical devices, control devices, and the like that drive hydraulic devices and hydraul...  
WO/2012/167892A3
The invention relates to a hydropneumatic device having pressure intensification, wherein the hydropneumatic device has a working part (8) having a working piston guided in the working part (8) has a intensifier part (9) having a intensi...  
WO/2012/167959A1
The invention relates to a fluid device, in particular for use in or with a machine for producing, handling and/or processing a fibre material web, such as a paper, tissue or card web. The fluid device has at least one piston/cylinder ar...  
WO/2012/167892A2
The invention relates to a hydropneumatic device having pressure intensification, wherein the hydropneumatic device has a working part (8) having a working piston guided in the working part (8) has a intensifier part (9) having a intensi...  
WO/2012/167960A1
The invention relates to a digital pneumatic pressure regulator (1) for controlling the pressure and/or flow rate of a working fluid in a machine for producing a fibrous material web, in particular a paper or cardboard machine, having at...  

Matches 651 - 700 out of 33,109