公开(公告)号：US3785249A

公开(公告)日：1974-01-15

申请号：US3785249D

申请日：1972-03-28

申请人： PIROSKA J

发明人： PIROSKA J

IPC分类号： F15B15/00 ,  F15B15/14 ,  F15B15/26

CPC分类号： F15B15/00 ,  F15B2015/1495

摘要： A power transmission system includes a linear fluid actuator having a cylinder and a piston, a screw rotatably mounted in the cylinder in an axially fixed position and having a threaded connection with the piston wherein there is some play between the threads, and means arranged to rotate the screw in either direction only when the mechanical load on the piston has counterbalance by corresponding force derived from fluid pressure for movement in both directions.

摘要翻译： 动力传动系统包括具有气缸和活塞的线性流体致动器，螺杆可旋转地安装在气缸中的轴向固定位置并且具有与活塞的螺纹连接，其中在螺纹之间存在一些间隙，以及布置成旋转的装置 只有当活塞上的机械载荷通过来自两个方向运动的流体压力的相应的力具有平衡时，螺杆在任一方向上。

公开(公告)号：US3485256A

公开(公告)日：1969-12-23

申请号：US3485256D

申请日：1968-01-22

申请人： FISHER GOVERNOR CO

发明人： CHO CHUN HYUNG

IPC分类号： F15B9/17 ,  F15B15/00

CPC分类号： F15B9/17 ,  Y10T137/2365 ,  Y10T137/86614

公开(公告)号：US3455210A

公开(公告)日：1969-07-15

申请号：US3455210D

申请日：1966-10-26

申请人： EATON YALE & TOWNE

发明人： ALLEN JOHN D

IPC分类号： F15B13/04 ,  F15B13/042 ,  F15B9/08 ,  F15B15/00

CPC分类号： F15B13/0417 ,  Y10T137/2605 ,  Y10T137/87185

公开(公告)号：US12084031B2

公开(公告)日：2024-09-10

申请号：US17605505

申请日：2020-02-10

申请人： Robert Bosch GmbH

发明人： Julien Bregeault ,  Michael Kloss ,  Hiroshi Kameyama

IPC分类号： B60T8/36 ,  B60T8/34 ,  B60T17/04 ,  B60T17/06 ,  F15B15/00

CPC分类号： B60T8/343 ,  B60T17/04 ,  B60T17/06 ,  F15B15/00 ,  B60T2270/10

摘要： A hydraulics assembly, in particular for controlling the brake pressure of a wheel brake of an electronically slip-controllable brake system of a motor vehicle, includes a hydraulic block having a recess for receiving a pump element, a line connection for contacting the hydraulics assembly to the wheel brake, channels for providing the pump element with brake fluid, and a hydraulic cavity formed in the interior of the hydraulic block, which cavity is contacted with the recess for the pump element. The cavity includes a riser, which extends from the recess for the pump element in the direction toward the line connection of the hydraulic block and is contacted with the recess for the pump element. The suction line collects gas escaping from the pressure means due to temperature and/or pressure changes and improves the operating noise of the hydraulics assembly.

公开(公告)号：US20240102265A1

公开(公告)日：2024-03-28

申请号：US18530964

申请日：2023-12-06

申请人： KUBOTA CORPORATION

发明人： Yuji FUKUDA ,  Kohei NAGAO

IPC分类号： E02F9/22 ,  B62D11/00 ,  B62D11/04 ,  F15B15/00 ,  F15B18/00

CPC分类号： E02F9/2253 ,  B62D11/005 ,  B62D11/04 ,  E02F9/2235 ,  E02F9/225 ,  E02F9/2275 ,  F15B15/00 ,  F15B18/00 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B2211/57

摘要： A working machine includes a machine body, a left traveling device located left on the machine body, a right traveling device located right on the machine body, and a controller configured or programmed to perform automatic deceleration to automatically reduce a first rotation speed of a left traveling motor and a second rotation speed of a right traveling motor by shifting a speed stage of each of the left and right traveling motors from a second speed stage to a first speed stage that is lower than the second speed stage. The controller is configured or programmed to: not perform the automatic deceleration when the first rotation speed or the second rotation speed is equal to or higher than a predetermined rotation speed; and perform the automatic deceleration when the first rotation speed and the second rotation speed are less than the predetermined rotation speed.

公开(公告)号：US11873624B2

公开(公告)日：2024-01-16

申请号：US17388668

申请日：2021-07-29

申请人： KUBOTA CORPORATION

发明人： Yuji Fukuda ,  Kohei Nagao

IPC分类号： E02F9/22 ,  F15B15/00 ,  F15B18/00 ,  B62D11/04 ,  B62D11/00

CPC分类号： E02F9/2253 ,  B62D11/005 ,  B62D11/04 ,  E02F9/225 ,  E02F9/2235 ,  E02F9/2275 ,  F15B15/00 ,  F15B18/00 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B2211/57

摘要： A working machine includes a controller to perform automatic deceleration to automatically reduce a first rotation speed of a left traveling motor to output a power to a left traveling device on a left portion of a machine body and a second rotation speed of a right traveling motor to output a power to a right traveling device on a right portion of the machine body by shifting a speed stage of each of the left and right traveling motors from a second speed to a first speed that is lower than the second speed. The controller is configured or programmed to determine, based on the second rotation speed, a left threshold for judging whether to perform the automatic deceleration in left pivot turn of the machine body, and to determine, based on the first rotation speed, a right threshold for judging whether to perform the automatic deceleration in right pivot turn of the machine body.

公开(公告)号：US11680551B2

公开(公告)日：2023-06-20

申请号：US17680704

申请日：2022-02-25

申请人： Sun Hydraulics, LLC

发明人： Bernd Zähe

IPC分类号： F15B13/02 ,  G01F1/115 ,  F16K37/00 ,  F03B13/00 ,  F16K17/04 ,  H02K7/18 ,  G01F15/00 ,  G01F15/06 ,  F15B15/00 ,  F16K11/07 ,  F15B21/14

CPC分类号： F03B13/00 ,  F15B13/02 ,  F15B13/026 ,  F15B15/00 ,  F15B21/14 ,  F16K11/07 ,  F16K17/048 ,  F16K37/005 ,  G01F1/115 ,  G01F1/1155 ,  G01F15/005 ,  G01F15/066 ,  H02K7/1823 ,  F05B2220/706

摘要： An example valve includes: a pressure compensation spool configured to be subjected to a first fluid force of fluid received at a first port acting in a proximal direction; a pressure compensation spring disposed in a pressure compensation chamber and applying a biasing force on the pressure compensation spool in a distal direction; a turbine configured to rotate as fluid flows through the valve; and a flow area configured to throttle fluid flow from the first port to the pressure compensation chamber, wherein fluid in the pressure compensation chamber applies a second fluid force on the pressure compensation spool in the distal direction, such that the pressure compensation spool moves to a particular axial position based on force equilibrium between the first fluid force, the second fluid force, and the biasing force to throttle fluid flow from the pressure compensation chamber to a second port.

公开(公告)号：US20230131384A1

公开(公告)日：2023-04-27

申请号：US17973789

申请日：2022-10-26

申请人： Caterpillar SARL

发明人： Isao Konishi ,  Genta Mine ,  Yuya Kanenawa ,  Shinya Ohmura ,  Sei Shimahara ,  Kazuya Miyamori

IPC分类号： E02F9/22 ,  E02F9/20 ,  F15B15/00 ,  F15B13/02

摘要： Problem to be solved: To provide a hydraulic circuit for the construction machine which enables to use the relief valve of low capacity in the work tool circuit. Solution: The hydraulic circuit 2 for a construction machine has: a hydraulic pump 4 of variable capacity, a work tool 6 operated by hydraulic oil delivered by the hydraulic pump 4, a work tool operating device 10 to output a signal for operating the work tool 6, a control valve 14 allowing the hydraulic pump 4 to supply the hydraulic oil to the work tool 6 based on the signal output from the work tool operating device 10, a tool's relief valve 44 to release the hydraulic oil flowing between the control valve 14 and the work tool 6, a pressure sensor 46 to detect a pressure of hydraulic oil flowing into the work tool 6, and a controller 48 to reduce a delivery rate from the hydraulic pump 4 when the pressure detected by the pressure sensor 46 exceeds a predetermined value.

公开(公告)号：US20220397211A1

公开(公告)日：2022-12-15

申请号：US17680704

申请日：2022-02-25

申请人： Sun Hydraulics, LLC

发明人： Bernd Zähe

IPC分类号： F16K37/00 ,  G01F1/115 ,  F16K11/07 ,  F15B15/00 ,  F15B13/02

摘要： An example valve includes: a pressure compensation spool configured to be subjected to a first fluid force of fluid received at a first port acting in a proximal direction; a pressure compensation spring disposed in a pressure compensation chamber and applying a biasing force on the pressure compensation spool in a distal direction; a turbine configured to rotate as fluid flows through the valve; and a flow area configured to throttle fluid flow from the first port to the pressure compensation chamber, wherein fluid in the pressure compensation chamber applies a second fluid force on the pressure compensation spool in the distal direction, such that the pressure compensation spool moves to a particular axial position based on force equilibrium between the first fluid force, the second fluid force, and the biasing force to throttle fluid flow from the pressure compensation chamber to a second port.

公开(公告)号：US20210030958A1

公开(公告)日：2021-02-04

申请号：US17075388

申请日：2020-10-20

申请人： The Trustees of Columbia University in the City of New York

发明人： Ozgur SAHIN

IPC分类号： A61M5/20 ,  B25J9/10 ,  F15B15/00 ,  A61K35/742 ,  A61K47/38

摘要： Aspects provide fluid responsive actuators and methods of using fluid responsive actuators capable of generating a power-to-volume ratio sufficient to inject a drug from a syringe within an injection period from about 1 to about 60 seconds after exposure of the fluid responsive elements to a fluid. The fluid responsive actuators can be used to inject viscous drugs to a patient.