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WO/2013/048745A1 |
A hydraulic system (72) is disclosed. The hydraulic system may have a pump (80), a first actuator (34), and a meterless circuit (74) connecting the first actuator to the pump. The hydraulic system may also have a second actuator (26) con...
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WO/2013/048712A1 |
A hydraulic system (56) is disclosed. The hydraulic system may have a pump (80), and a hydraulic actuator (26) having a first chamber (52) and a second chamber (54). The hydraulic system may also have a first pump passage (82) fluidly co...
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WO/2013/045167A2 |
The invention relates to a hydraulic system, preferably for piloting and actuating a two-cylinder thick matter pump. The hydraulic system comprises a tank (68) for receiving hydraulic oil, a primary circuit having at least one hydraulic ...
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WO/2013/048803A1 |
A hydraulic system (72) is disclosed. The hydraulic system may have an over-center, variable-displacement pump (80), an actuator (26), and first and second passages that create a closed- loop circuit (74). The hydraulic system may also h...
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WO/2013/041493A1 |
An oil level control device in a main tank of a supply circuit, the supply circuit comprising: a main tank (4); a first pump (1) which, in aspiration, is connected to the main tank (4); a main hydraulic circuit (100), which is connected ...
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WO/2013/041434A1 |
The invention relates to a closed level regulating system for a vehicle for pneumatic level regulation of pneumatic springs (290), comprising: a compressor (100), an air dryer (110), a level regulating unit, comprising a compressed air r...
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WO/2013/039719A1 |
A temperature compensated accumulator includes a housing having a first and a second longitudinal end. Each longitudinal end has a port. The housing is divided into three sections by two bulkheads. A first piston is disposed in the housi...
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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...
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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...
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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...
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WO/2013/033379A1 |
A hydraulic system (46) is disclosed. The hydraulic system may have a pump (50), a hydraulic actuator (22), and first and second passages (56, 58) fluidly connecting the pump to the hydraulic actuator in a closed-loop. The hydraulic syst...
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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...
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WO/2013/033538A1 |
A pneumatic controller (300) described herein includes a housing (302) to be connected to an actuator (108). The housing contains a position monitor (306) with a wireless communication interface. The pneumatic controller also includes a ...
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WO/2013/026283A1 |
A heating system applied in engineering machinery comprises a heat supply device (1), a distribution switch (2), a pipeline (3), an exhaust pipe (4), a hydraulic oil tank (5), a temperature sensor (7) and a controller (8). The distributi...
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WO/2013/026199A1 |
Disclosed is a coupling device (30) for hydraulic elements, which coupling device (30) is used for connecting a first hydraulic element (10) having a first oil port (11) with a second hydraulic element (20) having a second oil port (21),...
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WO/2013/025583A1 |
A machine (10) includes a frame (12) having ground engaging propulsion elements (24) coupled therewith, and a hydraulically actuated implement system (26) having a linkage (28), an implement (30) coupled with the linkage (28), and a hydr...
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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...
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WO/2013/020282A1 |
Disclosed are a control method for a hydraulic system and a control method for a concrete pump truck. The hydraulic system comprises a plurality of hydraulic pumps driven by a prime motor. Each hydraulic pump drives a corresponding execu...
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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...
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WO/2013/015467A1 |
Disclosed is a hydraulic system for controlling the degree of openness of an arm regeneration valve by driving an electronic proportional control valve during a combined operation of simultaneously operating an arm and a swing device. Th...
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WO/2013/016471A1 |
An enhanced hydraulic fluid comprises a conventional hydraulic fluid in combination with a predetermined amount of benzene by volume relative to the conventional hydraulic fluid. The predetermined amount of benzene preferably comprises b...
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WO/2013/007061A1 |
A series cylinder and a stroke end adaptive compensation method thereof, and a concrete pumping device comprising the series cylinder. The compensation method comprises: disposing, on at least one of a first U-shaped pipe (11) and a seco...
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WO/2013/005809A1 |
A shovel related to an embodiment of the present invention is a shovel that includes a boom cylinder (7) and an arm cylinder (8). The shovel includes a hydraulic motor (310) that is driven by a hydraulic oil flowing out from the boom cyl...
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WO/2013/004521A2 |
The present invention relates to a braking system module (1), such as an coilbox (2), comprising a housing (3) and a connector (6). The connector comprises a connector body (7) and contact elements (8) defining a connection interface (9)...
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WO/2013/000549A2 |
The invention relates to a pressure medium system, in particular a hydraulic system, having a fluid pump (1) for delivering a drive fluid with a certain delivery flow rate and a certain fluid pressure (PIST), and having a control unit (8...
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WO/2012/176762A1 |
This railcar damping device (1) includes: a tank (7) storing a liquid that is supplied to and discharged from a cylinder (2) of an actuator; a first open/close valve (9) provided in and being capable of opening/closing a first passage (8...
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WO/2012/176758A1 |
This railcar damping device (1) includes: a tank (7) storing a liquid that is supplied to and discharged from a cylinder (2) of an actuator; a first open/close valve (9) provided in and being capable of opening/closing a first passage (8...
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WO/2012/175100A1 |
The invention relates to an actuating device (10) for variably setting at least one compression ratio of an internal combustion engine, in particular a reciprocating internal combustion engine, having at least one hydraulically operable ...
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WO/2012/172949A1 |
A hydraulic shovel configured so that air is efficiently supplied to cooling devices for the hydraulic shovel. This hydraulic shovel is provided with a cooling unit (20) and also with a rear outer cover door (21) and a front outer cover ...
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WO/2012/173149A1 |
Provided is a power regeneration device for work machine, the power regeneration device comprising: an oil passage (31) which is connected to a bottom-side oil pressure chamber of an oil pressure cylinder (3a) and through which return oi...
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WO/2012/173815A2 |
A closed hydrostatic circuit (10) with variable charge and variable flushing systems is disclosed. A variable displacement charge pump (47) is configured to supply charge fluid and pilot control fluid to the hydrostatic circuit. An elect...
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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...
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WO/2012/166022A1 |
As such, the present invention relates to a hydraulic system (10) for a working machine (101). The hydraulic system (10) comprises a hydraulic actuator (12) and a first hydraulic machine (14) for supplying fluid to the hydraulic actuator...
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WO/2012/166224A2 |
A hydraulic control system (48) for a machine (10) is disclosed. The hydraulic control system may have a hydraulic circuit (50), a pump (52) configured to supply pressurized fluid, and a first sensor (105) configured to generate a first ...
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WO/2012/166223A2 |
A hydraulic control system (48) is disclosed. The hydraulic control system may have a hydraulic actuator (20), a valve arrangement (54), and an operator input device (98) configured to generate a first signal indicative of a desired hydr...
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WO/2012/166035A1 |
Pressure pulse generator comprising a cylinder (2), a body (9) connected to the cylinder (2), a first channel (15) extending from the cylinder (2) to a pressure sink LP, a pressure fluid circuit having a second channel (4) extending to t...
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WO/2012/166225A2 |
A hydraulic control system (48) for a machine (10) is disclosed. The hydraulic control system may have a hydraulic circuit (50), and a pump (58) configured to supply pressurized fluid to the hydraulic circuit. The hydraulic control syste...
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WO/2012/165773A2 |
The present invention relates to a miniature actuator using bubbles, which is configured so to be capable of changing the internal pressure thereof according to the growth and disappearance of bubbles on a cavity interface and for the re...
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WO/2012/165471A1 |
A railway car vibration control device (1) is provided with actuators (A1, A2) comprising: a cylinder (2) which is linked to a railway car truck; a piston (3); a rod (4) which is linked to the piston and to a vehicle body; a rod-side cha...
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WO/2012/163878A1 |
The invention relates to a method for cooling a metallic strand in a strand guide of a strand casting machine, and to a switching valve for intermittently permitting and shutting off a volume flow of a cooling medium. The problem address...
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WO/2012/162235A2 |
A pump system (24) is disclosed. The pump system may have a pump (28) with a displacement that is variable, and an actuator (34) movable to adjust the displacement of the pump. The pump system may also have an electro- hydraulic valve (3...
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WO/2012/160985A1 |
Provided is an electric drive system for a construction machine that is capable of increasing the operating time, which is limited by a power storage device mounted on the construction machine, over systems of the prior art, due to the p...
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WO/2012/161721A1 |
Provided is a de-aeration device that de-aerates hydraulic fluid in a hydraulic system (10). The hydraulic fluid is controllably supplied to the de-aeration device (28) in response to one or more sensed parameters. Consequently, the de-a...
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WO/2012/161628A1 |
The object of the present invention is to provide an inventive energy recovery method for a hydraulic system comprising a hydraulic cylinder (1), a pump (2), a tank (3), a supply conduit (4), a return conduit (5), and a hydraulic accumul...
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WO/2012/155883A1 |
The invention relates to a vent connection for liquid filling and ventilating in a hydraulic coupling disengagement system of a motor vehicle, comprising a ventilating valve and a pipe housing. Said ventilating valve is arranged so that ...
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WO/2012/157510A1 |
This invention comprises: a rotary hydraulic motor (23) and a rotary electric motor (101) for driving an upper rotary body (2), which is the common object to be driven; a hydraulic pump (22) for supplying a pressurized oil to the rotary ...
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WO/2012/156107A1 |
The invention relates to a bearing device (01) for a rotary member in a printing press. Said bearing device comprises a housing (02), a bearing block (03) that is connected to the housing by means of at least one linear bearing (06) and ...
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WO/2012/153586A1 |
A fuel-efficient hydraulic fluid has a viscosity lower than a standard hydraulic fluid and thus demonstrates reduced pressure loss, allowing the speeds of various actuators to be increased in a control system based on a standard model. H...
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WO/2012/152382A1 |
The invention relates to a clutch transmission (2), especially a dual clutch transmission for a motor vehicle, comprising at least one clutch (K1, K2) and at least one gear selector (155, 155', 157, 157'), said gear selector (155, 155', ...
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WO/2012/153429A1 |
In relation to fluid pressure devices, a connection apparatus (18a, 18b), by which a filter (12), a regulator (14) and a lubricator (16) that constitute a fluid pressure unit (10) are mutually connected, is equipped with a base member (8...
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