子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 241 | PRESSURE COMPENSATION UNIT | US15781180 | 2016-11-08 | US20180347153A1 | 2018-12-06 | Yasunori HATANAKA; Masahiro MATSUO |
| A pressure compensation unit includes: a control valve controlling hydraulic fluid supply and discharge to and from an actuator, the control valve including a pump port, a pair of relay and supply/discharge ports, and a tank port; a pressure compensation valve connected to the relay ports by an upstream and downstream-side relay lines, the pressure compensation valve moving in accordance with a pressure difference between upstream-side relay line and signal pressure; a load pressure detection line branching from the downstream-side relay line; a relief line connected to the downstream-side relay line and having a relief valve; and a switching valve leading: a maximum load pressure to the pressure compensation valve as the signal pressure when the hydraulic fluid does not flow through the relief line; and a pump pressure to the pressure compensation valve as the signal pressure when the hydraulic fluid flows through the relief line. | ||||||
| 242 | VALVE DEVICE | US15765868 | 2016-09-08 | US20180298922A1 | 2018-10-18 | Akio MATSUURA |
| In a valve device, first and second spool holes in which first and second spools of first and second unload valves are accommodated, respectively, are formed in a second valve block, opening portions of the first and second spool holes are formed in surfaces in outer surfaces of the second valve block other than contact surfaces with adjacent first and third valve blocks and in parallel with axes of spools accommodated in the adjacent first and third valve blocks. | ||||||
| 243 | FLUID PRESSURE CONTROL CIRCUIT AND FLUID PRESSURE CONTROL DEVICE | US15765892 | 2016-09-08 | US20180283410A1 | 2018-10-04 | Akio MATSUURA |
| A fluid pressure control circuit connected to first and second pumps includes: a switching valve configured to allow for and disconnect a communication between the first and second pumps; and first and second unloading valves configured to unload working fluid discharged from the respective first and second pumps. The switching valve and the first and second unloading valves are disposed in separate valve sections. | ||||||
| 244 | FLUID PRESSURE CONTROL DEVICE | US15762641 | 2016-09-21 | US20180282974A1 | 2018-10-04 | Shunsuke KUBO; Jun KIMURA |
| A fluid pressure control device includes a switching valve configured to switch an operation of an operate check valve, a relief valve configured to open when a pressure in a load-side pressure chamber reaches a predetermined pressure, and a relief discharge passage configured to lead a relief fluid discharged from the relief valve to a tank. The switching valve includes a piston giving thrust to a spool upon receipt of a pilot pressure on a back surface, a drain chamber defined by the spool and the piston, and a drain passage allowing the drain chamber and a spring chamber to communicate with the relief discharge passage. The relief fluid discharged from the relief valve is discharged to the tank through the relief discharge passage and does not operate the switching valve. | ||||||
| 245 | Working machine control system | US15113486 | 2015-01-27 | US10072396B2 | 2018-09-11 | Nobuyoshi Yoshida; Ikuo Inagaki |
| A working machine control system includes: a split-flow fluid pressure pump configured to discharge a working fluid from a first discharge port and a second discharge port; a communication switching valve configured to be switched by a switch signal when any one of a first operation valve and a second operation valve is switched so as to allow a first neutral passage and a second neutral passage to communicate with each other; a neutral cut valve configured to be switched by the switch signal so as to block communication between a tank and one of the first neutral passage and the second neutral passage for the first operation valve or the second operation valve that is not switched; and a discharge flow rate adjusting device configured to adjust the fluid pressure pump so as to reduce a discharge flow rate thereof when the switch signal is inputted from any one of the first operation valve and the second operation valve. | ||||||
| 246 | METHOD FOR FORMING HYDRAULIC ACTUATOR HYDRAULIC OIL PASSAGE | US15749892 | 2016-08-18 | US20180231030A1 | 2018-08-16 | Hideki KANENOBU |
| A method for forming hydraulic oil passages for hydraulic actuators according to an aspect of the present invention includes: forming a valve block mount surface including first and second regions on an outer surface of a housing; collecting valves for hydraulic actuators belonging to a main function group to a main function valve block that is mountable directly or indirectly on the first region; collecting valves for hydraulic actuators belonging to an additional function group to an additional function valve block that is mountable directly or indirectly on the second region; and mounting the valve blocks on corresponding regions of the valve block mount surface, and thereby, the hydraulic actuators to be mounted are fluidly connected to each other so that the hydraulic actuators are operable by using hydraulic oil from a common oil source. | ||||||
| 247 | INTEGRATED MULTIPLE VALVE MANIFOLD | US15735221 | 2016-06-20 | US20180135766A1 | 2018-05-17 | Shinji MIYAZOE; Kazuhiro NOGUCHI |
| An integrated multiple valve manifold that is reduced in size and weight by integrally incorporating a plurality of valve mechanisms in one manifold. The one manifold, which is formed of an extruded material through which a fluid supply hole and fluid discharge holes extend, includes a plurality of valve holes each of which communicates with the fluid supply hole and the fluid discharge holes by directly intersecting both of the fluid supply hole and the fluid discharge holes, output ports that are formed so as to individually communicate with the valve holes, spools that are slidably inserted into the valve holes, and electromagnetic pilot valves that are individually attached to one ends or both ends of the valve holes. | ||||||
| 248 | Cylinder device | US15124866 | 2015-10-08 | US09945441B2 | 2018-04-17 | Takayuki Ogawa |
| A cylinder device includes a recess provided on either one of the piston and the cylinder, the recess facing the other one of the piston and the cylinder; an extension-side discharge passage configured to permit only a flow of liquid from the extension-side chamber toward the recess; a compression-side discharge passage configured to permit only a flow of liquid from the compression-side chamber toward the recess; a tank-side discharge passage configured to allow the extension-side discharge passage and the compression-side discharge passage to communicate with the tank through the recess; an extension-side damping force generation passage configured to apply a resistance to a flow of liquid passing therethrough so as to exert a damping force during extension; and a compression-side damping force generation passage configured to apply a resistance to a flow of liquid passing therethrough so as to exert a damping force during contraction. | ||||||
| 249 | FLUID PRESSURE CONTROL DEVICE | US15566617 | 2016-03-30 | US20180094405A1 | 2018-04-05 | Hiroki ISOGAI |
| A fluid pressure control device includes a first circuit system having a first pump and a first control valve. The first circuit system includes an intermediate cut valve provided downstream of the first control valve in a first intermediate passage and which connects and disconnects a connection between the first intermediate passage and the tank, and an external output port communicating at a part downstream of the first control valve in the first intermediate passage and upstream of the intermediate cut valve, the external output port being capable of externally supplying working fluid discharged from the first pump. | ||||||
| 250 | HYDRAULIC CONNECTION HAVING A FLEXIBLE PORT MOUTH AND METHOD FOR CONNECTING SAME | US15382202 | 2016-12-16 | US20170184209A1 | 2017-06-29 | Michael T. LANDRUM |
| A hydraulic port includes: a body defining a first passageway, the first passageway defining a first port at an outer surface of the body; a first thin member located on the body and surrounding the first port, the first thin member being configured to flex away from the first passageway when pressurized fluid flows through the first port. | ||||||
| 251 | WORKING MACHINE CONTROL SYSTEM | US15113486 | 2015-01-27 | US20170009430A1 | 2017-01-12 | Nobuyoshi YOSHIDA; Ikuo INAGAKI |
| A working machine control system includes: a split-flow fluid pressure pump configured to discharge a working fluid from a first discharge port and a second discharge port; a communication switching valve configured to be switched by a switch signal when any one of a first operation valve and a second operation valve is switched so as to allow a first neutral passage and a second neutral passage to communicate with each other; a neutral cut valve configured to be switched by the switch signal so as to block communication between a tank and one of the first neutral passage and the second neutral passage for the first operation valve or the second operation valve that is not switched; and a discharge flow rate adjusting device configured to adjust the fluid pressure pump so as to reduce a discharge flow rate thereof when the switch signal is inputted from any one of the first operation valve and the second operation valve. | ||||||
| 252 | HYDRAULIC CIRCUIT FOR CONSTRUCTION MACHINE AND CONTROL DEVICE FOR SAME | US14540226 | 2014-11-13 | US20150068200A1 | 2015-03-12 | Hirofumi HASHIMOTO |
| A hydraulic circuit for a construction machine including a center bypass passage including a group of directional control valves arranged in tandem; and a bleed-off valve arranged in the center bypass passage on a downstream side of the group, wherein each directional control valve includes a first internal passage causing the pressurized oil supplied to the directional control valve to flow out to the center bypass passage and a second internal passage supplying the pressurized oil to a cylinder port, wherein a parallel passage is formed by the center bypass passage and the first internal passage by causing the pressurized oil discharged from the hydraulic pump to flow to the center bypass passage on the downstream of the directional control valve, wherein the second internal passage supplies the pressurized oil from the center bypass passage through an opening of a spool and/or the bypass passage to the cylinder port. | ||||||
| 253 | ENGINE CONTROL METHOD OF CONSTRUCTION MACHINE | US14368909 | 2011-12-28 | US20140331661A1 | 2014-11-13 | Seong-Geun Yun; Sung-Bok Park; Se-Rib Jee |
| An engine control system for a construction machine is disclosed, which can compulsorily stop engine driving when an attachment or the like malfunctions against an operator's intention during the operation of an excavator or the like. The engine control system includes a first step of determining whether pilot signal pressure, which is detected when at least one of an operation lever and a traveling pedal for respectively operating an attachment, a swing device, and a traveling device is operated, exceeds a first set pressure, and a second step of determining whether the pressure on the outlet side of a main hydraulic pump exceeds a second set pressure, wherein if the pilot signal pressure detected in the first step does not exceed the first pressure and the pressure of the main hydraulic pump detected in the second step exceeds the second pressure, engine driving is compulsorily stopped by means of a control signal from the controller. | ||||||
| 254 | METHOD AND DEVICE FOR CONTROLLING A TORQUE OF AN ELECTRIC MOTOR OF AN ELECTRO-HYDRAULIC SYSTEM | US14126526 | 2012-05-11 | US20140219822A1 | 2014-08-07 | Karsten Mueller; Volker Schueren; Dieter Holl; Bernd Spatz; Dirk-Walter Herold; Wolfgang Haug; Eberhard Schemm |
| A method is used to control a torque of an electric motor of an electro-hydraulic system. The method includes selecting a value of a set point torque depending on a current pressure in a hydraulic circuit of the electro-hydraulic system. The method also includes determining a control signal for controlling the torque of the electric motor using a target torque and the set point torque. | ||||||
| 255 | Vehicle control device | US13980185 | 2011-01-18 | US08745980B2 | 2014-06-10 | Hiroshi Shimada; Michihito Shimada; Masashi Takagi; Motonari Ohbayashi; Shinya Kodama; Akihiro Kida; Akito Onishi; Toshiya Oishi; Takamasa Kitamura |
| A vehicle control device, that controls to suppress a driving force of a vehicle based on an operation of a brake pedal operated when a braking force is generated by a braking device, wherein the brake pedal is connected to a brake booster, that increases an operating force input to the brake pedal by using a brake negative pressure to transmit to brake fluid of the braking device in order to appropriately control by appropriately detecting the operation of the brake pedal; and the driving force is suppressed according to an M/C pressure when the brake negative pressure is higher than a brake negative pressure threshold value, and the driving force is suppressed according to an operation state of the brake pedal when the brake negative pressure is equal to or lower than the brake negative pressure threshold value. | ||||||
| 256 | HYDRAULIC SYSTEM AND A METHOD FOR CONTROLLING A HYDRAULIC SYSTEM | US14123122 | 2011-05-31 | US20140123634A1 | 2014-05-08 | Kim Heybroek; Roland Wiktor |
| A hydraulic system for a working machine includes a hydraulic actuator and a first hydraulic machine for supplying fluid to the hydraulic actuator. The hydraulic system further includes a hydraulic transformer for supplying fluid to the hydraulic actuator in parallel with the first hydraulic machine, and an accumulator for fluid. The hydraulic transformer includes a first port and a second port and the transformer is adapted to transform a first pressure and a first flow at the first port to a second pressure and a second flow at the second port. The second port of the hydraulic transformer is in fluid communication with the hydraulic actuator and the first port is in communication with the accumulator. | ||||||
| 257 | METHOD AND SYSTEM FOR WASHING A VEHICLE | US13875268 | 2013-05-01 | US20130239992A1 | 2013-09-19 | Kevin Detrick |
| A method of controlling wash equipment in an automated vehicle wash system having a conveyor includes, measuring one or more contours of a vehicle as the vehicle moves thorough an entry area of the automated vehicle wash system on the conveyor; tracking the distance a fixed point relative to the conveyor moves; associating the one or more contours of the vehicle with the position of the fixed point; determining, based on the one or more contours of the vehicle and the position of the fixed point, commands for operating the wash equipment; delivering the commands to the wash equipment; and operating the wash equipment in accordance with the commands. | ||||||
| 258 | Rod equal displacement cylinder in a rapid transfer and feed system | US360639 | 1994-12-21 | US5522212A | 1996-06-04 | Philip A. Kubik |
| A single rod three chamber fluid cylinder is driven in an initial rapid advance forward stroke by a main pump, pumping fluid through a proportional directional control valve to act against a first equal area at the head end of the piston. Fluid expelled from a second equal area at the rod side of the piston is returned to the reservoir through a proportional directional control valve which is in a first position while a two position valve is in its first position allowing an accumulator to fill a third chamber exposed to a third area of the head side. When shifting to the feed stroke, the two position valve switches to its second position disconnecting the accumulator to the third area and connecting the main pump to the third area while also connected to the first equal area. Upon the return stroke of the piston, the fluid from the first equal area is returned to the sump and the fluid from the third area is routed to the accumulator. | ||||||
| 259 | Multiple speed hydraulic control system | US27334D | 1969-06-02 | USRE27334E | 1972-04-11 | |
| A MULTIPLE SPEED HYDRAULIC STERING CONTROL SYSTEM FOR A TRACTOR LOADER VEHICLE WITH MEANS RESPONSIVE TO A LOW SPEED ENGINE THROTTLE SETTING TO DIRRECT A HIGH RATE OF FLUID FLOW TO THE CONTROL SYSTEM AND RESPONSIVE TO A HIGH SPEED THROTTLE SETTING TO DIRECT A LOW RATE OF FLUID FLOW TO THE CONTROL SYSTEM. A MULTIPLE SPEED HYDRAULIC STEERING AND LIFTING CONTROL SYSTEM FOR A TRACTOR LOADER VEHICLE WITH MEANS RESPONSIVE TO A LOW SPEED ENGINE THROTTLE SETTING TO DIRECT FLUID FLOW FOR STEERING AND LIFTING, RESPECTIVELY, AT ONE DISPROPORTIONATE RATE AND RESPONSIVE TO A HIGH SPEED ENGINE THROTTLE SETTING TO DIRECT FLUID FLOW FOR STEERING AND LIFTING, RESPECTIVELY, AT A DIFFERING DISPPROPORTIONATE RATE. SPECIFICALLY, STEERING RECEIVES ITS HIGH RATE OF FLUID FLOW AT LOW ENGINE SPEED AND LIFTING RECEIVES ITS HIGH RATE OF FLUID FLOW AT HIGH ENGINE SPEED, WITH EACH HAVING AVAILABLE AT LEAST SOME FLOW FULL TIME.
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| 260 | Device for controlling pumps for operating hydraulic motors equipment | US3579986D | 1969-06-06 | US3579986A | 1971-05-25 | ABE KATSURO; KAKINUMA SABURO; UNO MASAAKI |
| A device for controlling pumps for operating hydraulic motors comprising at least two variable displacement pumps, valve means for each said pump disposed between the discharge side of the pump and the hydraulic motors for switching a charge of hydraulic fluid delivered to the hydraulic motors upon operation of an operating lever, and a hydraulic servomechanism for each said pump operated by a control lever coupled to said operation lever for moving a discharge flow control member of the pump, said servomechanism having a control circuit including a first control valve operated by said control lever for forming a flow of hydraulic fluid therethrough to move said discharge flow control member of the pump to a position corresponding to the amount of operation of the control lever, and a second control valve responding to the discharge pressure of the pump for forming another flow of hydraulic fluid therethrough to move said discharge flow control member of the pump to a position corresponding to the discharge pressure of the pump.
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