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Patent Searching and Data


Matches 551 - 600 out of 8,699

Document Document Title
WO/2013/085086A1
Disclosed is a hydraulic system for increasing the fuel efficiency of equipment by lowering the relief pressure of a relief valve so as to minimize the loss of power of an engine when in a standby mode, in which a working device or the l...  
WO/2013/078878A1
A comprehensive regulation device for a small speed-regulator based on an integrated hydraulic pressure technology, the device comprising a main oil inlet P, a main oil return opening T, a three-position four-way proportional valve (1), ...  
WO/2013/079083A1
A valve arrangement (1) is proposed which has a valve (3), in which a valve chamber (7) is formed. The valve chamber (7) is delimited by a valve seat wall (12) which supports a plurality of valve seats (41) and is penetrated by a work du...  
WO/2013/081213A1
Disclosed is a meter-out flow control system which automatically variably controls meter-out flow by using the load pressure occurring in an actuator as a signal pressure to minimize unnecessary flow resistance and prevent cavitation fro...  
WO/2013/075729A1
The invention relates to a supply module for insertion into a module chain (2) of functional modules (5, 6), electrically connected to one another in a Z-linkage (4) along a concatenation axis (3), with a first coupling surface (8) havin...  
WO/2013/077968A1
A control system 108 for a work implement 116 on a machine 100 is disclosed including a first hydraulic circuit 201, a second hydraulic circuit 208, and a controller 182. The first hydraulic circuit 201 includes a hydraulic cylinder asse...  
WO/2013/036355A3
A hydraulic system (46) is disclosed. The hydraulic system may have a pump (50), a tank (99), a displacement actuator (134) having first and second chambers (136, 140), a regeneration valve (78), and a load-holding valve (86, 88). The hy...  
WO/2013/070466A1
A hydraulic circuit (200) including a hydraulic swing motor (16) having a first port (214) and a second port (216). A first motor conduit (210) connected to the first port (214) of the hydraulic swing motor, and a second motor conduit (2...  
WO/2013/003046A3
A hydraulic control system (50) for a machine (10) is disclosed. The hydraulic control system may have a work tool (16) movable to perform an excavation cycle having a plurality of segments, a motor (49) configured to swing the work tool...  
WO/2013/063997A1
A hydraulic control loop comprises a direction control valve (10) having a bypass throttle loop and an execution element (20) connected to the direction control valve. The hydraulic control loop further comprises a valve (30). The valve ...  
WO/2013/060573A1
The invention relates to a valve device comprising a valve body (29) which is movably arranged in a valve housing (26). A first connection point and a connecting line which is connected to said first connection point are formed in the va...  
WO/2013/058935A1
A hydraulic system (56) is disclosed. The hydraulic system may have a first meterless circuit (60) with a first pump (66) fluidly connected to a first actuator (26) in a closed-loop manner, and a second meterless circuit (62) with a seco...  
WO/2013/059386A1
A hydraulic system (56) is disclosed. The hydraulic system may have a first circuit (60) fluidly connecting a first pump (66) to a swing motor (43) in a closed- loop manner, and a second circuit (58) fluidly connecting a second pump (66)...  
WO/2013/059250A1
A hydraulic system (56) includes a first pump (66), a first actuator (26) fluidly connected to the first pump (66) via a first closed-loop circuit (58), a second pump (66), and a second actuator (42L) fluidly connected to the second pump...  
WO/2013/059066A1
A hydraulic system (72) is disclosed having first, second, and third pumps. The hydraulic system may also have a first actuator (26) connected to the first pump in closed-loop manner, a second actuator (32) connected to the second pump i...  
WO/2013/056689A1
The subject matter of the invention is a pilot-control stage of a proportionally controlled high-pressure hydraulic valve, having a housing (102), in which a piston chamber (110) is formed, having a guide piston which is held such that i...  
WO/2013/058951A1
A hydraulic system (56) includes a variable displacement pump (66), and a variable displacement first travel motor (42L) selectively fluidly connected to the pump (66) in a closed- loop manner. The system (56) also includes a first switc...  
WO/2013/059536A1
A hydraulic system (56) is disclosed. The hydraulic system may have a first circuit (64) fluidly connecting a first pump (66) to a swing motor (43) and to a first travel motor (42R) in a parallel closed-loop manner. The hydraulic system ...  
WO/2013/003050A3
An energy recovery retrofit kit for a hydraulic control system (50) is disclosed. The energy recover retrofit kit may have at least one of a first accumulator (108) and a second accumulator (110). The energy recover retrofit kit may also...  
WO/2013/059033A1
A hydraulic system (72) is disclosed. The hydraulic system may have a plurality of pumps (76, 82, 88) with unidirectional functionality and being variable displacement, a common discharge passage (108) connected to the plurality of pumps...  
WO/2013/059001A1
A hydraulic system (56) includes a variable-displacement first pump (68A, 68B, 68C, 68D) and a variable-displacement second pump (68A, 68B, 68C, 68D). The hydraulic system also includes a first actuator (26, 32, 34) selectively connected...  
WO/2013/056724A1
Valve device (1) which has a supplementary manual actuating device (33). The supplementary manual actuating device (33) has an actuating tappet (34) with an actuating end section (43) and can firstly be moved between a basic position and...  
WO/2013/059254A1
A hydraulic system (56) includes a variable displacement first pump (66), a first linear actuator (34) fiuidly connected to the first pump (66) via a first closed- loop circuit (58), a variable displacement second pump (66), and second a...  
WO/2013/059018A1
A hydraulic system (56) includes a variable-displacement first pump (68D), an over-center variable-displacement first travel motor (42L) selectively connected to receive fluid pressurized by the first pump in a closed loop manner, and an...  
WO/2013/059110A2
A hydraulic system (72) is disclosed. The hydraulic system may have a unidirectional variable displacement first pump (76), a first hydraulic actuator (26) connected to the first pump via a closed-loop first circuit (74), a unidirectiona...  
WO/2013/059073A1
A hydraulic system (72) is disclosed. The hydraulic system may have a unidirectional variable displacement first pump (76), a first actuator (26) connected to the first pump via a closed-loop first circuit (74), and a first switching val...  
WO/2013/058942A1
A hydraulic system (56) is disclosed. The hydraulic system may have a plurality of closed-loop circuits (58, 60, 62) fluidly connecting a plurality of pumps (66) to a plurality of actuators (42L, 42R, 43, 26, 32), and at least one contro...  
WO/2013/059540A1
A method of controlling a hydraulic system (56) includes providing fluid to a first actuator (26) with a first pump (66) via a first closed-loop circuit (58) of a machine (10), and providing fluid to a second actuator (42L) with a second...  
WO/2013/058973A1
A hydraulic system (56) includes a variable-displacement first pump (68A, 68D), a variable-displacement second pump (68B, 68C), and a first actuator (32, 34, 42L, 42R) selectively connected either to the first pump in a closed loop manne...  
WO/2013/059020A1
A hydraulic system (46) is disclosed that has first and second passages (86, 88) connecting a pump (50) to an actuator (22) in closed-loop manner, and first and second load-holding valves (86, 88) within the first and second passages. Th...  
WO/2013/053668A1
Hydraulic servovalve (1) having two stages and feedback members, in which the moving power-distribution member (7) comprises means (8) of trapping the feedback member (6), allowing at least a movement of one trapped part of the feedback ...  
WO/2013/051740A1
Disclosed is a control system for controlling flow so as to allow simultaneous usage of a parallel flow path and a tandem flow path thereby reducing loss of pressure inside a control valve, when simultaneously operating work devices havi...  
WO/2013/052430A1
A hydraulic actuator (114,200) system including an actuator (114,200) and a valve assembly (204) configured for bi-directional regeneration. The actuator (114,200) may include a hollow body (206) and a rod (210) disposed within and exten...  
WO/2013/049573A2
Hydraulic valve arrangements may be assembled to provide pre-compensation or post-compensation using the same chassis body. A first type of main spool is disposed in a main passage and a first type of pressure compensator spool is dispos...  
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...  
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...  
WO/2013/048895A1
A hydraulic system (72) is disclosed. The hydraulic system may have a pump (80) with variable-displacement, a first linear actuator (26), and a second linear actuator (26) coupled to the first linear actuator to operate in tandem. The fi...  
WO/2013/048796A1
A hydraulic system (56) is disclosed. The hydraulic system may have a pump (66), a rotary actuator (42L), a linear actuator (34), and a closed- loop circuit (58) fluidly connecting the pump to the rotary and linear actuators. The hydraul...  
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...  
WO/2012/173815A3
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...  
WO/2013/041884A1
A three position four way compensating valve comprises an outer body member (6) having a valve inlet port (28)(30) and a valve outlet port (26)(32). A fluid pathway is defined between the inlet port (28)(30) and the outer port (26)(32). ...  
WO/2013/043137A1
The present invention ensures that an element (13) that prevents falling of the load by entrapment of the hydraulic fluid within a hydraulic cylinder also functions as discharging the entrapped hydraulic fluid in order to assure the lowe...  
WO/2013/037356A1
The invention relates to a fluid valve arrangement, comprising a bistable fluid valve (10a) for at least one fluid line (18), having a valve body (12) that can be brought into two positions for two switching states, wherein a pressure pu...  
WO/2012/149005A3
A reciprocating pump comprises a cylinder, an inlet check valve, a piston, an outlet check valve and a purge circuit. The cylinder has a first end and a second end. The inlet check valve is disposed proximate a first end of the cylinder....  
WO/2013/036355A2
A hydraulic system (46) is disclosed. The hydraulic system may have a pump (50), a tank (99), a displacement actuator (134) having first and second chambers (136, 140), a regeneration valve (78), and a load-holding valve (86, 88). The hy...  
WO/2012/128797A3
A normally closed, electrical solenoid actuated, pressure compensated, proportional, hydraulic flow control valve (4) includes a fluid flow control poppet valve (5), a pilot operator (6), a solenoid operator (7) and a pressure compensato...  
WO/2013/036432A1
Embodiments of the invention provide a high-reliability, cost-effective electro- hydraulic servo-valve assembly that is not susceptible to failure caused by contaminated fluid. In particular embodiments, the electro-hydraulic servo-valve...  
WO/2012/162235A3
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...  
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...  
WO/2013/006552A3
An improved mass flow controller with a body having an inlet and an outlet; a sensor adapted to sense the flow of material out of the outlet; a controller adapted to receive a signal from the sensor; a proportional valve operatively conn...  

Matches 551 - 600 out of 8,699