公开(公告)号：US20190145438A1

公开(公告)日：2019-05-16

申请号：US15812298

申请日：2017-11-14

申请人： Deere & Company

发明人： Amy K. Jones ,  Richard Pugh ,  Kristen D. Cadman

IPC分类号： F15B19/00 ,  F15B1/26 ,  F15B21/04 ,  E02F3/42 ,  E02F3/43 ,  E02F9/22

CPC分类号： F15B19/005 ,  E02F3/283 ,  E02F3/422 ,  E02F3/431 ,  E02F9/2235 ,  E02F9/2296 ,  F15B1/26 ,  F15B21/041 ,  F15B2211/20546 ,  F15B2211/615 ,  F15B2211/6303 ,  F15B2211/6306 ,  F15B2211/655 ,  F15B2211/6652 ,  F15B2211/6658 ,  F15B2211/857 ,  F15B2211/8636 ,  F15B2211/87

摘要： A vehicle comprising a hydraulic fluid reservoir, a hydraulic fluid pump, a hydraulic filter, a sensor, and a vehicle control unit. The hydraulic fluid reservoir may have a bottom portion filled with hydraulic fluid and a top portion filled with air. The hydraulic fluid pump may be hydraulically coupled to the hydraulic fluid reservoir so as to draw hydraulic fluid from the hydraulic fluid reservoir. The hydraulic filter may be hydraulically coupled to the hydraulic fluid reservoir so as to filter debris from the hydraulic fluid entering the hydraulic fluid reservoir. The sensor may be in communication with the vehicle control unit where the sensor is configured to measure a variable indicative of a failure status of the hydraulic filter and communicate the variable to the vehicle control unit. The vehicle control unit may be configured to derate the hydraulic fluid pump to a first degree when the variable indicative of the failure status of the hydraulic filter is above a first threshold and configured to derate the hydraulic fluid pump to a second degree when the variable indicative of the failure status of the hydraulic filter is above a second threshold.

公开(公告)号：US20180128292A1

公开(公告)日：2018-05-10

申请号：US15808373

申请日：2017-11-09

申请人： Eaton Corporation

发明人： Meng Wang ,  Michael Berne Rannow

IPC分类号： F15B21/02 ,  F15B11/00 ,  F15B21/08

CPC分类号： F15B19/002 ,  F15B11/006 ,  F15B13/0417 ,  F15B19/00 ,  F15B19/005 ,  F15B19/007 ,  F15B21/087 ,  F15B2013/0409 ,  F15B2211/20546 ,  F15B2211/30575 ,  F15B2211/455 ,  F15B2211/46 ,  F15B2211/6313 ,  F15B2211/634 ,  F15B2211/6346 ,  F15B2211/6656 ,  F15B2211/7053 ,  F15B2211/7058 ,  F15B2211/761 ,  F15B2211/855 ,  F15B2211/857 ,  F15B2211/87 ,  G01F1/36 ,  G01F15/005

摘要： Systems and methods for controlling valve assemblies associated with an actuator in an electro-hydraulic system are disclosed. In one method, a controller monitors hydraulic fluid flow for an actuator to identify one valve assembly connected to the actuator as a meter-in valve and another valve assembly connected to the actuator as a meter-out valve. In one aspect, the valve assembly most recently identified as the meter-in valve is controlled to maintain a pressure setpoint and the valve assembly most recently identified as the meter-out valve is controlled to maintain a hydraulic fluid flow rate. The method can also include determining whether the actuator is in a passive state or an overrunning state and controlling the valve most recently identified as the meter-in valve to maintain a first pressure setpoint when the actuator is in a passive state and to maintain a second pressure setpoint when the actuator is in an overrunning state.

公开(公告)号：US20180120193A1

公开(公告)日：2018-05-03

申请号：US15566263

申请日：2016-04-19

申请人： Nexmatix LLC

发明人： Dennis T. Mell ,  Ellen R. Mell ,  Michael Goldfarb

IPC分类号： G01M3/26 ,  F16K37/00

CPC分类号： G01M3/26 ,  F15B13/021 ,  F15B19/005 ,  F15B20/005 ,  F15B2013/0412 ,  F15B2211/6313 ,  F15B2211/855 ,  F15B2211/857 ,  F15B2211/8636 ,  F15B2211/87 ,  F15B2211/8855 ,  F16K11/0712 ,  F16K31/122 ,  F16K31/1221 ,  F16K37/005 ,  G01M3/3272

摘要： This application describes apparatuses, systems, and methods that combines specific configurations of a pneumatic actuation system together with a pressure measurement device to allow for measurement of pressure inside isolated subsystems within the system to thereby provide detection of leaks within the system. In certain exemplary embodiments, the apparatus comprises a directional control valve that employs at least one port connectivity configuration that creates at least one isolated fluid subsystem within the overall system. When the valve is in this isolated subsystem configuration, a given mass of fluid (i.e., compressed gas) can neither enter nor leave the subsystem. The leak detection method consists of momentarily placing the valve in this isolated subsystem configuration when switching between standard configurations, and measuring pressure with at least one pressure sensor in the isolated fluid subsystem while in this configuration, where loss of pressure in this configuration indicates existence of a leak.

公开(公告)号：US20180112797A1

公开(公告)日：2018-04-26

申请号：US15298726

申请日：2016-10-20

申请人： Fisher Controls International LLC

发明人： Kenneth Junk ,  Shannon Jelken

IPC分类号： F16K37/00 ,  F16K31/06

CPC分类号： F16K37/0091 ,  F15B19/005 ,  F15B20/008 ,  F15B2211/6313 ,  F15B2211/855 ,  F15B2211/857 ,  F15B2211/8636 ,  F15B2211/8755 ,  F16K11/044 ,  F16K31/0627 ,  F16K37/0041

摘要： Methods and apparatus of assessing a test of a solenoid valve via a positioner are disclosed. An example apparatus includes a solenoid valve to enable an actuator to close an emergency valve and a valve positioner fluidly and communicatively coupled to the solenoid valve. The valve positioner is to instruct the solenoid valve to transition the solenoid valve from a first state to a second state. The valve positioner is to monitor a pressure change of a pressure chamber of the actuator in fluid communication with the solenoid valve relative to an initial pressure for a monitoring duration. The valve positioner is to identify a maximum pressure change during the monitoring duration and determine a ready state of the solenoid valve when the maximum pressure change is greater than a minimum trip value and the pressure change at a monitoring end time is less than a maximum reset value.

公开(公告)号：US20180103018A1

公开(公告)日：2018-04-12

申请号：US15289472

申请日：2016-10-10

申请人： Citrix Systems, Inc.

发明人： Abhishek Chauhan ,  Tushar Kanekar ,  Ritesh Patani ,  Robert Kidd ,  Sergey Golubev ,  Harpreet Singh

IPC分类号： H04L29/06 ,  G06F21/60

CPC分类号： F16K37/0091 ,  F15B5/006 ,  F15B19/005 ,  F15B20/00 ,  F15B20/008 ,  F15B2211/6306 ,  F15B2211/6313 ,  F15B2211/6658 ,  F15B2211/857 ,  F15B2211/8613 ,  F15B2211/8636 ,  F15B2211/8755 ,  G06F21/602 ,  H04L63/0281 ,  H04L63/0471 ,  H04L63/0485 ,  H04L63/166 ,  H04L63/168 ,  H04L2209/12

摘要： The present disclosure is directed towards systems and methods for executing cryptographic operations across different types of processing hardware. An intermediary device may identify a cryptographic function to be performed at the device, according to a message from a client or a server. The device may identify a sequence of cryptographic operations to be executed for performing the cryptographic function. The device may determine subsets of the cryptographic operations to be executed on across different types of processing hardware. The different types of processing hardware may reside on the device. Each of the types of processing hardware may execute, responsive to the determination, the respective subset of the cryptographic operations, according to the sequence of the cryptographic operations.

公开(公告)号：US20170152874A1

公开(公告)日：2017-06-01

申请号：US15352120

申请日：2016-11-15

申请人： SMC CORPORATION

发明人： Jiro MANDOKORO

IPC分类号： F15B19/00 ,  G01D5/12 ,  F15B11/08 ,  G01D11/24

CPC分类号： F15B19/005 ,  F15B11/08 ,  F15B15/2861 ,  F15B15/2892 ,  F15B2211/857 ,  G01D5/12 ,  G01D11/245 ,  G01D11/30

摘要： A position detecting sensor is mounted in a sensor attachment groove formed in a cylinder device and having a wide portion and a narrow portion. Mounting members each include a mounting member main body positioned in the wide portion having a width dimension larger than a groove width of the narrow portion, and an extension extending from the mounting member main body and positioned in the narrow portion. The housing and the mounting members are connected by connecting bolts, whereby a portion of the cylinder device is retained between the housing and the mounting members.

公开(公告)号：US09651067B2

公开(公告)日：2017-05-16

申请号：US13947303

申请日：2013-07-22

申请人： Caterpillar Inc.

发明人： Matthew J. Beschorner ,  Eric C. Hughes ,  Mikhail A. Sorokine ,  James A. Aardema ,  Thomas J. Hajek ,  Aleksandra M. Egelja

IPC分类号： F15B13/04 ,  F15B19/00 ,  F16K37/00 ,  F15B20/00 ,  F16K31/12 ,  F15B13/043

CPC分类号： F15B19/005 ,  F15B13/0435 ,  F15B20/008 ,  F15B2211/20546 ,  F15B2211/50518 ,  F15B2211/55 ,  F15B2211/6316 ,  F15B2211/6355 ,  F15B2211/857 ,  F15B2211/8636 ,  F15B2211/8752 ,  F16K31/12 ,  F16K37/0041 ,  Y10T137/0318 ,  Y10T137/7768 ,  Y10T137/8326

摘要： A system can include one or more valve arrangements with a working chamber to receive a working fluid at a first pressure, and a control chamber to receive fluid at a second pressure. A dynamic seal can be disposed on a land of a valve element. The valve arrangement may include a sleeve against which the dynamic seal is slidably engaged. The valve element may include a check stem. A pressure compensating system may be in communication with bores formed in with the valve element. A pressure system to monitor dynamic seal wear may be in communication with the control chamber of the valve arrangement.

公开(公告)号：US20170107696A1

公开(公告)日：2017-04-20

申请号：US15391750

申请日：2016-12-27

申请人： KUBOTA CORPORATION

发明人： Yuji FUKUDA ,  Ryosuke KINUGAWA ,  Hiroaki NAKAGAWA

IPC分类号： E02F9/22 ,  F15B13/043 ,  F15B19/00 ,  F15B11/08

CPC分类号： E02F9/2285 ,  E02F3/3414 ,  E02F9/2228 ,  E02F9/2253 ,  E02F9/226 ,  E02F9/2267 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/08 ,  F15B13/0433 ,  F15B19/00 ,  F15B21/045 ,  F15B2211/20523 ,  F15B2211/20553 ,  F15B2211/329 ,  F15B2211/355 ,  F15B2211/526 ,  F15B2211/633 ,  F15B2211/6343 ,  F15B2211/6355 ,  F15B2211/66 ,  F15B2211/665 ,  F15B2211/67 ,  F15B2211/857 ,  F16H61/433

摘要： A work machine includes an engine, a pilot pump to be driven by the engine to supply a pilot fluid, an operation pump to receive a first pilot fluid to change an output power in accordance with the first pilot fluid, a pilot fluid tube provided between the pilot pump and the operation pump, an operation valve connected to the pilot fluid tube to output the first pilot fluid, the first pilot fluid being a part of the pilot fluid supplied from the pilot fluid, a temperature sensor to measure a temperature of at least one of an operation fluid including the pilot fluid, a cooling water, an engine oil, and an outside air, and a pressure controller to control a first pilot pressure of the pilot fluid outputted from the operation valve when a temperature measured by the temperature sensor is equal to or higher than a first temperature.

公开(公告)号：US20170073924A1

公开(公告)日：2017-03-16

申请号：US15123538

申请日：2015-03-02

申请人： CNH Industrial America LLC

发明人： Adriano Garramone ,  Andrea Gravili ,  Gianpiero Negri ,  Giuseppina Razetto ,  Marco Pietro Ciarrocchi

IPC分类号： E02F3/43 ,  F15B13/042 ,  E02F9/20 ,  E02F3/28 ,  E02F9/22

CPC分类号： E02F3/434 ,  E02F3/283 ,  E02F9/2004 ,  E02F9/2041 ,  E02F9/2203 ,  E02F9/2267 ,  E02F9/2285 ,  F15B13/0422 ,  F15B13/0424 ,  F15B2013/0428 ,  F15B2211/329 ,  F15B2211/355 ,  F15B2211/575 ,  F15B2211/6316 ,  F15B2211/6336 ,  F15B2211/6346 ,  F15B2211/6355 ,  F15B2211/67 ,  F15B2211/857

摘要： A working machine including a movable implement, a hydraulic actuator for displacing the implement, and a hydraulic control system for enabling an operator to control movement of the implement. The control system allows the implement to be returned to a desired position or state, such as a return to dig position or a return to float state, in a single automated operation that is initiated by the operator actuating a switch at the same time as moving a joystick in a desired direction. A pilot-operated valve is used to supply hydraulic fluid under pressure to the actuator acting on the implement and the operation of the joystick is detected by means of a pressure sensor connected to a control line of the pilot-operated valve.

摘要翻译： 一种包括可移动工具的工作机，用于移动工具的液压致动器，以及用于使操作者能够控制工具的运动的液压控制系统。 控制系统允许工具在由操作员在移动的同时启动开关的一个自动操作中返回到期望的位置或状态，例如返回到挖掘位置或返回到浮动状态 操纵杆在所需的方向。 先导阀用于向作用在工具上的致动器提供压力下的液压流体，并且通过连接到先导式操作阀的控制线的压力传感器来检测操纵杆的操作。

公开(公告)号：US20170029256A1

公开(公告)日：2017-02-02

申请号：US15182875

申请日：2016-06-15

申请人： DANFOSS POWER SOLUTIONS GMBH & CO OHG

发明人： Abhijit Das ,  Lee Mahlum ,  Luke Wadsley ,  Richard Hitchcock ,  Jeffrey A. Sipila ,  Larry Joachim

IPC分类号： B66F9/24 ,  B66F9/22 ,  F16K31/02

CPC分类号： B66F9/24 ,  B66F9/22 ,  E02F9/2203 ,  E02F9/2228 ,  F15B11/04 ,  F15B19/007 ,  F15B21/087 ,  F15B2211/6306 ,  F15B2211/6313 ,  F15B2211/6346 ,  F15B2211/6656 ,  F15B2211/75 ,  F15B2211/761 ,  F15B2211/857 ,  F16K31/02

摘要： A hydraulic control system that uses system pressure information and a rescaled operator input to command valve spool area to control actuator speed. The system uses soft sealing and/or soft pressure compensation.

摘要翻译： 液压控制系统，使用系统压力信息和重新调节的操作员输入来指示阀芯区域来控制执行器速度。 该系统使用软密封和/或软压力补偿。