Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 501 - 550 out of 33,190

Document Document Title
WO/2014/090400A1
A method for the production of hydraulic and electric energy from the rolling motion generated by vehicular and non-vehicular traffic, which envisages the establishment of a flow of fluid moving between at least two tanks, the first of w...  
WO/2014/091684A1
Provided is a construction machine that makes it possible to prevent cavitation and reduce power loss. The construction machine is provided with: a lower traveling body; an upper turning body; a front attachment; a plurality of hydraulic...  
WO/2014/091685A1
Provided is a hydraulic circuit that makes it possible to switch the circuit state between a state in which a regenerative action operates and a state in which the regenerative action stops. The hydraulic circuit comprises: hydraulic pum...  
WO/2014/091683A1
Provided is a hydraulic circuit for a construction machine that has a simple configuration and that makes it possible to enhance the effect of reducing pressure loss that is caused by oil returning from the head-side chamber of a hydraul...  
WO/2014/087978A1
A work machine is provided with an inverter (9A) for controlling an assist torque amount (Tm) to an engine from a motor generator (2) on the basis of the size of a deviation (e) of the actual speed of the engine (1) from a target speed, ...  
WO/2014/086327A1
Hydraulic cylinder (10) with end position damping comprising at least one cylinder (11) in which there is arranged at least one piston (12) which is connected to at least one piston rod (13) and can be moved in the axial direction, where...  
WO/2014/086554A3
The invention relates to a method for displaying the position of a hydraulically actuated fitting, with a piston (121) in an actuating cylinder (1.2) for actuating the fitting (1.1), the piston being connected via two hydraulic lines (2,...  
WO/2014/086569A1
The invention relates to a hydraulic arrangement with a valve block which is designed such that two pressure medium sources (6, 10) can be connected. A pressure medium connection between a load (26) connected to the valve block and the f...  
WO/2014/086484A3
In a method for operating a hydraulic device for providing a supply to hydraulic consumers (V) on a plastics injection moulding machine, provision is made of a pump (10) with a volumetric delivery characteristic that results in cyclic pu...  
WO/2014/086554A2
The invention relates to a method for displaying the position of a hydraulically actuated fitting, with a piston (121) in an actuating cylinder (1.2) for actuating the fitting (1.1), the piston being connected via two hydraulic lines (2,...  
WO/2014/084862A1
Systems and methods are described for actuating a plurality of pneumatic valves to positively isolate one or more pieces of equipment. A manual valve can be disposed on a supply conduit that fluidly couples each of the pneumatic valves t...  
WO/2014/084213A1
In addition to performing load-sensing control of a main pump (2) by rotational frequency control of an electric motor (1) using a controller (50), cutoff control for controlling the rotational frequency of the main pump (2) is performed...  
WO/2014/080664A1
A main valve (42) operates at a filling position where an air supply port (45) and a communication port (48) communicate, and a discharge position where a discharge port (47) and the communication port (48) communicate. A supply and exha...  
WO/2014/080619A1
In a hydraulic drive system (1), hydraulic fluid from an actuator pump (11) is supplied to actuators (16 - 18) via an actuator drive circuit (13). In the hydraulic drive system (1), hydraulic fluid from a fan pump (61) is also supplied t...  
WO/2014/073551A9
A fluid pressure control device for a power shovel, comprising: first, second, and third pumps; a first switching valve connected to the first pump; a second switching valve connected to the second pump; a first confluence control valve ...  
WO/2014/073497A1
The control system is provided with: a pressure detector for detecting the swing pressure or braking pressure of a swing motor; a swing regeneration switching valve that opens when the pressure detected by the pressure detector reaches a...  
WO/2014/073541A1
The present invention improves energy efficiency by reducing the throttling-off loss of the delivery flow rate of a hydraulic pump due to bleed-off control and improves operational performance by enabling control of hydraulic pump delive...  
WO/2014/072684A1
This invention relates to a clamp arrangement for coupling two components (213,215), comprising: a clamp (250) having at least two arms (314a, 314b, 314c) which are operable so as to close around either or both of the first and second co...  
WO/2014/074713A1
A method and system is provided for controlling a hydraulic actuator in a work machine by opening a load holding valve in a measured fashion in order to leak hydraulic pressure back into a depressurized portion of the hydraulic circuit, ...  
WO/2014/073416A1
The present invention is provided with a plurality of spools incorporated into a valve body, a cap provided to the valve body, pilot chambers corresponding to the spools and provided in the cap, a maximum-pressure introduction passage fo...  
WO/2014/073337A1
A construction machine is provided with: a rotatable body (50); a hydraulic pump (1); a hydraulic motor (3) which drives the rotatable body (50) using hydraulic oil supplied from the hydraulic pump (1); an electric motor (14) which, eith...  
WO/2014/073551A1
A fluid pressure control device for a power shovel, comprising: first, second, and third pumps; a first switching valve connected to the first pump; a second switching valve connected to the second pump; a first confluence control valve ...  
WO/2014/074708A1
Presented is a system and method to control hydraulic fluid flow, more specifically throttle hydraulic fluid flow, to achieve actuator deceleration rates greater than the maximum deceleration rate of an electrically driven pump. Electric...  
WO/2014/073515A1
A fluid pressure control device for a power shovel, comprising: a first switching valve that connects or disconnects a first pump and a first cylinder; a second switching valve that connects or disconnects a second pump and a second cyli...  
WO/2014/073338A1
During aerial boom lowering of a boom (131) by a front work machine (130) in which rotation by the tare weight is possible, potential energy is regenerated by working a hydraulic pump/motor (7) as a motor, operating a generator/electric ...  
WO/2014/068973A1
This hydraulic pressure control device (1) is provided with a directional valve (26), an operated valve (36), a first back pressure output mechanism (42), and a second shuttle valve (41). Upon operation of an operating lever (37), the op...  
WO/2014/069435A1
In a cylinder control device provided with a control valve for controlling the flow of operating fluid between a cylinder and a pump, the control valve is provided with: a spool furnished inside a body section; a sleeve disposed in oppos...  
WO/2014/069065A1
A hydraulic shovel according to an embodiment of the present invention comprises: a main pump (14); a hydraulic actuator which includes a rotating hydraulic motor (21); a control valve (17) which controls a flow of hydraulic oil between ...  
WO/2014/066627A1
A hydraulic vale controller that uses an existing pressure differential as some or all of the power source for valve operation. In a high pressure environment, such as downhole in an oil or gas well, the pressure differential between the...  
WO/2014/062142A1
The present invention relates to a system preventing the pressured oil leakage in a cylinder line enabling very low leakage rates without using the valve or the system, or without reducing the diametrical space between the housing and sp...  
WO/2014/061741A1
A work machine comprises a variable-capacity pump (2), an actuator (5) driven by oil discharged by the pump (2), an open-center actuator flow rate control valve (4) for controlling the rate at which hydraulic oil flows to the actuator (5...  
WO/2014/061472A1
The pump discharge flow rate of a bidirectional piston pump (31) is set to a reference pump discharge flow rate Qa if the operation state of a lifting/lowering cylinder (15) is in a no-load state, and is set to a small-flow-rate pump dis...  
WO/2014/061776A1
The purpose of the present invention is to provide a steering gear capable of transmitting the needed power to a rudder shaft, and a ship provided with said steering gear. This steering gear (100) rotates a rudder shaft (1) linked to the...  
WO/2014/061125A1
An electromagnetic switching valve (19), for which the maximum opening is set to be small, is disposed on piping (K1) between a lift cylinder (10) and a hydraulic pump motor (11). A pilot check valve (20), for which the maximum opening i...  
WO/2014/061499A1
An air cylinder device having a cylinder body and a piston rod which is moved in the forward and backward directions by the supply and discharge of pressurized air into and from the cylinder body, wherein the air cylinder device is provi...  
WO/2014/061507A1
In order to prevent the closing of a pressure compensation valve on a lower load-pressure side and thus to prevent a reduction in speed or stopping of the actuator on the lower load-pressure side when saturation occurs in a combined oper...  
WO/2014/061407A1
A hydraulic oil flow path has a first flow path and a second flow path. The first flow path connects a first pump port and a first chamber of a hydraulic cylinder. The second flow path connects a second pump port and a second chamber of ...  
WO/2014/056592A1
The invention relates to a valve block (10) comprising a plurality of main sliders (40), which are supplied in parallel with pressure fluid via a first and a second pump conduit (80; 81), the fluid stream, which flows in from the respect...  
WO/2014/057746A1
A cylinder drive device provided with: a first passage for communicating a first chamber of a cylinder and a first port of a pump; a second passage for communicating a tank with a second chamber of the cylinder; a third passage for commu...  
WO/2014/054983A1
A lift arrangement (2) for a working machine (1), comprising: a tool linkage comprising an arm (5) in one end pivotably connectable to a working machine and in an opposite end pivotably connectable to a tool (3); a first hydraulic actuat...  
WO/2014/055008A1
The invention relates to an operating cylinder (10) for a gearbox (4), comprising a cylinder housing (14) which is provided with first and second endwalls (16, 18) to form a space (20); a piston (22) which is provided with a piston rod (...  
WO/2014/054326A1
A hydraulic circuit for a construction machine controls the operation of hydraulic actuators. The hydraulic circuit is provided with: a detection means which detects the first drive pressure of pressurized oil supplied to one hydraulic a...  
WO/2014/053662A1
An energy storage system is described comprising a closed gas circuit which comprises an expansion chamber 2, a compression chamber 3 coupled to the expansion chamber, a compressor for compressing gas from the expansion chamber as it is ...  
WO/2014/052560A1
A plunger-style actuator assembly for use in a detent mechanism includes a guide post and an external plunger sleeve supported for sliding movement over the guide post. The external plunger sleeve rides along bearing surfaces that longit...  
WO/2014/051472A1
A hydraulic system for a work machine, comprising a first and a second hydraulic actuator: a first and a second hydraulic machine for providing hydraulic fluid to at least one of the first and the second actuator via a first and a second...  
WO/2014/045626A1
The manifold electromagnetic valve (10) comprises base assemblies (12a-12c), each of which is obtained from multiple base modules (11). Intermediate blocks (13, 14) abut the two sides of the base assembly (12a). On the valve-loading surf...  
WO/2014/045672A1
Provided is a drive device that is for a working machine, is provided by a hydraulic closed circuit system that drives a cylinder by means of a hydraulic pump, and causes the movement speed in both the extending and contracting direction...  
WO/2014/042182A1
This mixing drum drive apparatus is provided with: a hydraulic motor that rotatably drives a mixing drum; a hydraulic pump that is driven by the engine of a mixing truck, and supplies hydraulic fluid to the hydraulic motor; an auxiliary ...  
WO/2014/041710A1
A drift-prevention valve device provided, so as to be capable of reducing pressure loss even when the flow amount of oil is low, with: a main channel for connecting a pump port and an actuator port; a poppet for opening and closing the m...  
WO/2014/037090A1
The invention relates to a fluidic actuator comprising a drive element (2) that can be supplied with a pressure fluid and a two-stage proportional position controller (3) controlling the supply with pressure fluid to the drive element, s...  

Matches 501 - 550 out of 33,190