公开(公告)号：US09945441B2

公开(公告)日：2018-04-17

申请号：US15124866

申请日：2015-10-08

申请人： KYB Corporation

发明人： Takayuki Ogawa

IPC分类号： F16F9/19 ,  B61F5/24 ,  F16F9/49 ,  F16F9/58 ,  F15B11/00 ,  F15B11/10 ,  F16F9/20 ,  F16F9/50

CPC分类号： F16F9/19 ,  B61F5/24 ,  F15B11/00 ,  F15B11/10 ,  F16F9/20 ,  F16F9/49 ,  F16F9/50 ,  F16F9/58 ,  F16F2222/12 ,  F16F2228/066 ,  F16F2230/22

摘要： 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.

公开(公告)号：US20180100524A1

公开(公告)日：2018-04-12

申请号：US15290036

申请日：2016-10-11

申请人： American Axle & Manufacturing, Inc.

发明人： Paul J. Valente ,  James P. Downs

IPC分类号： F15B21/04 ,  B60K17/02 ,  B60K23/04 ,  F15B11/10

CPC分类号： F15B21/041 ,  B60K17/02 ,  B60K17/08 ,  B60K17/165 ,  B60K17/344 ,  B60K17/352 ,  B60K23/04 ,  B60Y2400/406 ,  F15B11/10 ,  F15B2211/615

摘要： An axle assembly can include a housing defining a reservoir and cylindrical bore open thereto. A clutch can selectively transmit torque between input and output members. A first inlet/outlet of a pump can be in fluid communication with the reservoir and define first threads coaxial with the cylindrical bore. The pump can be configured to pump fluid from the first inlet/outlet to an actuator of the clutch via a second inlet/outlet. The filter can include a base, port, and filter element. The port can define second threads that threadably engage the first threads. The base can be fixedly coupled to the port and include a cylindrical wall coaxial with the second threads. A seal member can form a seal between the cylindrical wall and the cylindrical bore when the first and second threads are engaged. The filter element can be disposed between the reservoir and the first inlet/outlet.

公开(公告)号：US20180100290A1

公开(公告)日：2018-04-12

申请号：US15289835

申请日：2016-10-10

申请人： Aaron Greer

发明人： Aaron Greer

IPC分类号： E02F9/22 ,  F15B11/10 ,  F15B11/16

CPC分类号： E02F9/221 ,  E02F3/3414 ,  E02F9/2228 ,  F15B1/26 ,  F15B11/10 ,  F15B11/16 ,  F15B2211/411 ,  F15B2211/426 ,  F15B2211/63 ,  F15B2211/665

摘要： A material handling machine can be operated in a bucket shake control mode to override proportional control of a valve controlling fluid flow to and from a bucket tilt cylinder of the machine. Fluid flow through the valve upon actuation of a tilt controller such a joystick therefore is proportional to actuator stroke when the shake control system is deactivated and is always maximized regardless of actuator stroke when the shake control system is activated. Bucket shake control is activated through the manual operation of a control device such as a joystick-mounted switch. As a result of this arrangement, proportional control valve actuation always occurs immediately upon bucket tilt controller movement in a direction that is dependent upon a direction of bucket tilt controller movement from the neutral position thereof

公开(公告)号：US09932994B2

公开(公告)日：2018-04-03

申请号：US14538920

申请日：2014-11-12

申请人： SUMITOMO(S.H.I.) CONSTRUCTION MACHINERY CO., LTD.

发明人： Hirofumi Hashimoto

IPC分类号： F16K31/00 ,  F15B11/10 ,  F15B13/04 ,  E02F9/22 ,  F15B11/16

CPC分类号： F15B11/10 ,  E02F9/2242 ,  E02F9/2267 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/162 ,  F15B13/0402 ,  F15B2211/20576 ,  F15B2211/3052 ,  F15B2211/30525 ,  F15B2211/3056 ,  F15B2211/30565 ,  F15B2211/3116 ,  F15B2211/31576 ,  F15B2211/31582 ,  F15B2211/35 ,  F15B2211/40507 ,  F15B2211/41509 ,  F15B2211/41554 ,  F15B2211/45 ,  F15B2211/7135 ,  F15B2211/7142 ,  F15B2211/78 ,  F15B2211/781

摘要： A hydraulic circuit for a construction machine including a direction control valve group including direction control valves provided in tandem to a center bypass passage, a bleed-off valve provided to the center bypass passage downstream of the direction control valve group, and a control valve controlling an amount of pressure oil to be supplied to the direction control valve.

公开(公告)号：US09897114B2

公开(公告)日：2018-02-20

申请号：US14471410

申请日：2014-08-28

申请人： VECTOR HORIZON TECHNOLOGIES, LLC

发明人： Oswaldo Baasch ,  Glenn Wethington ,  Jon A. Bigley

IPC分类号： F15B15/12 ,  F16K31/163 ,  F15B15/14 ,  F15B15/20 ,  F15B15/22 ,  F15B15/28 ,  F15B11/10

CPC分类号： F15B15/12 ,  F15B11/10 ,  F15B15/1485 ,  F15B15/149 ,  F15B15/202 ,  F15B15/204 ,  F15B15/22 ,  F15B15/2815 ,  F15B2211/40507 ,  F15B2211/50518 ,  F15B2211/6313 ,  F15B2211/7653 ,  F15B2211/7656 ,  F16K1/22 ,  F16K27/0218 ,  F16K31/1635 ,  F16K31/54

摘要： This present invention relates to a remote electro-hydraulic actuator for actuating of mechanical devices, such as a valve in an internal combustion exhaust pipe. The actuator includes a multi-vane rotational assembly that flows the working fluid through strategically sized flow channels within the structure of the rotational assembly. The size of the holes are sized to help the stability of the valve and can also be provided with pressure check valves or reed valves to dampen the rotation of the valve and reduce any instabilities due to pulsations driven back via the output shaft.

公开(公告)号：US09885261B2

公开(公告)日：2018-02-06

申请号：US14903878

申请日：2014-07-07

申请人： FREEVALVE AB

发明人： Anders Hoglund

IPC分类号： F15B11/08 ,  F01L9/02 ,  F01L13/00 ,  F15B11/10 ,  F15B13/043 ,  F15B13/044

CPC分类号： F01L9/021 ,  F01L13/0036 ,  F15B11/10 ,  F15B13/0435 ,  F15B13/044

摘要： Disclosed is an actuator for axial displacement of an object, including an actuator piston disc displaceable in a cylinder volume, an inlet channel, a first inlet valve body arranged in the inlet channel, a second inlet valve body operatively connected to the actuator piston disc and arranged in the inlet channel, an outlet channel and an outlet valve body arranged therein. The actuator includes an electrically controlled pilot valve communicating a first control pressure to the first inlet valve body via a first control pressure channel and communicating a second control pressure to the outlet valve body via a second control pressure channel. The pilot valve places itself in either a resting state or an active state.

公开(公告)号：US20180017087A1

公开(公告)日：2018-01-18

申请号：US15548841

申请日：2016-02-04

申请人： Caterpillar SARL

发明人： Hideki Nakajima ,  Shuhei Orimoto ,  Naoki Kuroda

IPC分类号： F15B11/10 ,  F15B21/14 ,  E02F9/22

CPC分类号： F15B11/10 ,  E02F9/2225 ,  E02F9/2228 ,  E02F9/2267 ,  F15B11/024 ,  F15B11/042 ,  F15B11/044 ,  F15B21/14 ,  F15B2211/30535 ,  F15B2211/3058 ,  F15B2211/327 ,  F15B2211/351 ,  F15B2211/353 ,  F15B2211/41509 ,  F15B2211/41563 ,  F15B2211/426 ,  F15B2211/455 ,  F15B2211/46 ,  F15B2211/465 ,  F15B2211/56 ,  F15B2211/6313 ,  F15B2211/6336 ,  F15B2211/6654 ,  F15B2211/7053

摘要： To reduce the cost by reducing the number of parts and simplify the control of regeneration in the hydraulic actuator even though the meter-in control and the meter-out control can be performed separately while the supply and the discharge of hydraulic fluid is controlled. A meter-in valve that controls supply flow from a hydraulic pump into a hydraulic cylinder is provided, and meter-out switching valve that switches the direction of supply and discharge of the hydraulic oil into the hydraulic cylinder and controls the discharge flow from the hydraulic cylinder to the oil tank is installed on the down stream side of the meter-in valve, and further, a regeneration control valve is installed on the down stream side of the meter-out switching valve.

公开(公告)号：US09850918B2

公开(公告)日：2017-12-26

申请号：US14892510

申请日：2013-06-03

申请人： VOLVO CONSTRUCTION EQUIPMENT AB

发明人： Robert Morelius ,  Kim Heybroek

IPC分类号： F15B11/10 ,  F16H61/448 ,  E02F9/12 ,  E02F9/22 ,  B60K6/12 ,  F16H61/4035 ,  F16H61/4096 ,  F15B11/00 ,  E02F3/42 ,  E02F3/43

CPC分类号： F15B11/10 ,  B60K6/12 ,  E02F3/422 ,  E02F3/431 ,  E02F9/123 ,  E02F9/2217 ,  E02F9/2253 ,  E02F9/2289 ,  F15B11/003 ,  F15B11/006 ,  F15B2211/20523 ,  F15B2211/2053 ,  F15B2211/20569 ,  F15B2211/212 ,  F15B2211/30565 ,  F15B2211/30575 ,  F15B2211/7058 ,  F15B2211/7107 ,  F15B2211/76 ,  F15B2211/763 ,  F16H61/4035 ,  F16H61/4096 ,  F16H61/448 ,  Y02T10/6208

摘要： A hydraulic system includes a first and a second rotating hydraulic machine, the first and second hydraulic machine being arranged to provide a torque via a common output shaft; a first valve arrangement for providing a differential hydraulic pressure level over the first hydraulic machine by using two sources of hydraulic fluid having different hydraulic pressure levels, a second valve arrangement for providing a differential hydraulic pressure level over the second hydraulic machine by using two sources of hydraulic fluid having different hydraulic pressure levels; and a control unit configured to control the first valve arrangement and the second valve arrangement such that different discrete levels of torque are provided via the output shaft of the hydraulic system. A hydraulic system for providing different discrete levels of torque using one hydraulic machine and a plurality of differential pressure levels, and a method for controlling a hydraulic system, are also provided.

公开(公告)号：US20170314585A1

公开(公告)日：2017-11-02

申请号：US15496738

申请日：2017-04-25

申请人： Neil Gordon Stewart

发明人： Neil Gordon Stewart

IPC分类号： F15B21/08 ,  F15B15/14 ,  F15B11/10

CPC分类号： F15B21/08 ,  A61C1/0038 ,  A61C3/02 ,  F15B11/10 ,  F15B15/1476 ,  F15B15/149 ,  F15B2211/6654 ,  F15B2211/7053

摘要： An apparatus for seamlessly activating an on-demand function related to a fluid-driven instrument connects to an output of control valve regulating system pressure during normal operation of the instrument. The apparatus includes a fluid-operated bistable circuit that is switchable from a standby mode to an actuating mode by a brief drop in system pressure. In the actuating mode the circuit acts on a switch or valve to activate the function. Turning off system pressure to a longer time returns the circuit to its standby mode. The circuit includes a two-port biased actuator responsive to pressure imbalance between its ports, which are separately pressurizable through, respectively, an actuator-controlled valve and a flow control module.

公开(公告)号：US20170297591A1

公开(公告)日：2017-10-19

申请号：US15511411

申请日：2015-08-26

申请人： KYB Corporation

发明人： Takayuki OGAWA

IPC分类号： B61F5/12 ,  B61F5/10 ,  B61F5/14 ,  F15B11/10

CPC分类号： B61F5/127 ,  B61F5/10 ,  B61F5/144 ,  B61F5/24 ,  F15B11/10 ,  F16F9/26 ,  F16F9/46

摘要： The railroad vibration control device includes a first cylinder device and a second cylinder device, the first cylinder device includes a first cylinder body, a pump configured to supply hydraulic pressure to the first cylinder body, and a hydraulic pressure circuit configured to adjust a thrust force generation direction and a thrust force of the first cylinder body, the second cylinder device includes a second cylinder body and a damper circuit configured to cause the second cylinder body to function as a damper, and the hydraulic pressure circuit and the damper circuit are the same circuit.