公开(公告)号：US12091832B2

公开(公告)日：2024-09-17

申请号：US17229474

申请日：2021-04-13

Applicant: Caterpillar Inc.

Inventor： Jason Stephen Knowles

IPC: E02F9/10 ,  E02F3/43 ,  E02F9/20 ,  E02F9/22 ,  E02F9/26 ,  F15B11/10 ,  F15B13/02 ,  F15B19/00 ,  F15B21/08

CPC classification number: E02F3/43 ,  E02F3/432 ,  E02F9/10 ,  E02F9/2004 ,  E02F9/2228 ,  E02F9/2271 ,  E02F9/265 ,  F15B11/10 ,  F15B13/025 ,  F15B19/00 ,  F15B21/08

Abstract: A track-type loader machine includes a main frame, laterally spaced track roller frames, an equalizer bar pivotally mounted to the main frame and attached to the roller frames, a work implement movably connected to the main frame by a plurality of linkages, and at least one cross-slope actuator which connects one of the roller frames to the main frame. The at least one cross-slope actuator is configured to tilt the work implement and the plurality of linkages in conjunction with the main frame relative to a pivoting axis of the equalizer bar.

公开(公告)号：US11953034B2

公开(公告)日：2024-04-09

申请号：US16099154

申请日：2017-05-03

Applicant: Baker Hughes Energy Technology UK Limited

Inventor： Ajay Kumar Behera ,  Bhasker Rao Keely ,  Nicholas Josep Ellson ,  Andrew Clarke

IPC: F15B19/00 ,  F15B11/10 ,  F16K37/00 ,  F15B20/00

CPC classification number: F15B19/005 ,  F15B11/10 ,  F16K37/0083 ,  F16K37/0091 ,  F15B20/005 ,  F15B2211/212 ,  F15B2211/6306 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/6326 ,  F15B2211/6336 ,  F15B2211/634 ,  F15B2211/7052 ,  F15B2211/855 ,  F15B2211/857 ,  F15B2211/864 ,  F15B2211/87

Abstract: A method for monitoring health of a hydraulic fluid subsystem is presented. The method includes determining a plurality of forces acting on an actuator of the hydraulic fluid subsystem, determining a plurality of parameters based on at least one of an actuator inlet flow rate, an actuator outlet flow rate, and the plurality of forces acting on the actuator, receiving a valve inlet pressure of at least one of oil and gas flowing through a pipe while entering a valve operationally coupled to the actuator and a valve outlet pressure of the at least one of the oil and the gas flowing through the pipe while flowing out of the valve, and monitoring the health of the hydraulic fluid subsystem based on at least one of the plurality of parameters, the valve inlet pressure, and the valve outlet pressure.

公开(公告)号：US11879484B2

公开(公告)日：2024-01-23

申请号：US18145248

申请日：2022-12-22

Applicant: Bimba LLC

Inventor： Kent Tabor

IPC: G01M3/26 ,  F15B15/28 ,  G01M99/00 ,  F15B19/00 ,  F15B11/10 ,  G01M3/28

CPC classification number: F15B15/2838 ,  F15B11/10 ,  F15B19/005 ,  G01M3/26 ,  G01M99/008 ,  F15B15/2861 ,  F15B2211/6306 ,  F15B2211/6313 ,  F15B2211/6336 ,  F15B2211/6343 ,  F15B2211/6656 ,  F15B2211/7053 ,  F15B2211/857 ,  F15B2211/864 ,  F15B2211/865 ,  F15B2211/87 ,  G01M3/2869

Abstract: An actuator system includes a piston-cylinder arrangement including a piston that is movable with respect to a cylinder. A first flow path is in fluid communication with the piston-cylinder arrangement and a second flow path is in fluid communication with the piston-cylinder arrangement. A control system is operable to fluidly connect the first flow path to a source of high-pressure fluid and to connect the second flow path to a drain to move the piston in a first direction. A pressure sensor is fluidly connected to the first flow path and is operable to measure sufficient pressure data during the movement of the piston to generate a pressure versus time curve. The control system is operable to compare the generated pressure versus time curve to a known standard pressure versus time curve stored in the control system to determine the condition of the piston-cylinder arrangement.

公开(公告)号：US11867203B2

公开(公告)日：2024-01-09

申请号：US17364097

申请日：2021-06-30

Applicant: Project Phoenix, LLC

Inventor： Thomas Afshari

IPC: F15B11/10 ,  F15B15/18 ,  F04C2/18 ,  F04C15/00 ,  F04C15/06 ,  F04C28/08 ,  F15B1/26 ,  F15B11/00 ,  F15B15/14 ,  E02F3/42 ,  E02F9/22 ,  F04C2/14

CPC classification number: F15B11/10 ,  E02F3/425 ,  E02F9/2271 ,  F04C2/14 ,  F04C2/18 ,  F04C15/008 ,  F04C15/06 ,  F04C28/08 ,  F15B1/26 ,  F15B11/003 ,  F15B15/14 ,  F15B15/18 ,  F04C2240/40 ,  F04C2240/402 ,  F04C2240/603 ,  F15B2211/2053 ,  F15B2211/275 ,  F15B2211/3057 ,  F15B2211/41563 ,  F15B2211/41572 ,  F15B2211/5157 ,  F15B2211/5158 ,  F15B2211/632 ,  F15B2211/6306 ,  F15B2211/6323 ,  F15B2211/6343 ,  F15B2211/6651 ,  F15B2211/6652 ,  F15B2211/6653 ,  F15B2211/6654 ,  F15B2211/6656 ,  F15B2211/7053 ,  F15B2211/7054 ,  F15B2211/75 ,  F15B2211/76

Abstract: A linear actuator system includes a linear actuator and at least one integrated pump assembly connected to the linear actuator to provide fluid to operate the linear actuator. The integrated pump assembly includes a pump with at least one fluid driver comprising a prime mover and a fluid displacement assembly to be driven by the prime mover such that fluid is transferred from a first port of the pump to a second port of the pump. The pump assembly also includes two valve assembles to isolate the pump from the system. The linear actuator system also includes a controller that establishes at least one of a speed and a torque of the at least one prime mover to exclusively adjust at least one of a flow and a pressure in the linear actuator system to an operational set point.

公开(公告)号：US11674533B2

公开(公告)日：2023-06-13

申请号：US17473835

申请日：2021-09-13

Applicant: The Raymond Corporation

Inventor： Erik C. Tracy

IPC: F15B11/10 ,  F15B11/16 ,  F15B1/26 ,  B66F9/22

CPC classification number: F15B11/10 ,  B66F9/22 ,  F15B1/26 ,  F15B11/16 ,  F15B2211/55 ,  F15B2211/6336 ,  F15B2211/6653

Abstract: A method of controlling a hydraulic control system of a material handling vehicle is provided. The method includes detecting an elevated height of a fork assembly, determining if the elevated height is above a first predetermined height threshold, and actuating a first low pressure control valve from a control valve closed position to a control valve open position to provide fluid communication from a supply passage to the first low pressure relief valve when the elevated height is above a first predetermined height threshold.

公开(公告)号：US20230136316A1

公开(公告)日：2023-05-04

申请号：US18147832

申请日：2022-12-29

Applicant: Mitsubishi Electric Corporation

Inventor： Noboru KAWAGUCHI ,  Hidetaka YAMAUCHI ,  Tomoya HATTORI ,  Koji HIROSE

IPC: B25J9/10 ,  B25J15/10 ,  B25J17/02 ,  B25J9/14 ,  F16H25/20 ,  F15B15/14 ,  F15B11/10 ,  B62D57/032 ,  F16H19/00 ,  F15B15/06 ,  F16H21/46 ,  B25J17/00 ,  B25J5/00

Abstract: A robot includes elbows connecting forearms rotatably to upper arms with two rotational degrees of freedom. The elbow includes: an elbow joint connecting the forearm and the upper arm with two rotational degrees of freedom; an elbow drive main link; an elbow drive auxiliary link; a forearm-side main link attaching unit attached with one end of the elbow drive main link with two rotational degrees of freedom, and provided in the forearm; an elbow-drive-main-link-side auxiliary link attaching unit attached with one end of the elbow drive auxiliary link with two rotational degrees of freedom, and provided on the elbow drive main link; and two linear actuators for moving two upper-arm-side link attaching units each attached with the other end of either the elbow drive main link or the elbow drive auxiliary link with two rotational degrees of freedom, and provided so as to be movable along the upper arm.

公开(公告)号：US11572904B2

公开(公告)日：2023-02-07

申请号：US17347768

申请日：2021-06-15

Applicant: Bimba LLC

Inventor： Kent Tabor

IPC: G01M3/26 ,  F15B15/28 ,  G01M99/00 ,  F15B19/00 ,  F15B11/10 ,  G01M3/28

Abstract: An actuator system includes a piston-cylinder arrangement including a piston that is movable with respect to a cylinder. A first flow path is in fluid communication with the piston-cylinder arrangement and a second flow path is in fluid communication with the piston-cylinder arrangement. A control system is operable to fluidly connect the first flow path to a source of high-pressure fluid and to connect the second flow path to a drain to move the piston in a first direction. A pressure sensor is fluidly connected to the first flow path and is operable to measure sufficient pressure data during the movement of the piston to generate a pressure versus time curve. The control system is operable to compare the generated pressure versus time curve to a known standard pressure versus time curve stored in the control system to determine the condition of the piston-cylinder arrangement.

公开(公告)号：US20220033069A1

公开(公告)日：2022-02-03

申请号：US17503930

申请日：2021-10-18

Applicant: SAFRAN LANDING SYSTEMS UK LTD

Inventor： Royston Alan Evans ,  Paul Shaw

IPC: B64C25/22 ,  B64C25/24 ,  B64C25/26 ,  B64C25/12 ,  F15B1/02 ,  F15B11/10 ,  F15B15/06

Abstract: An aircraft assembly having: a first part; a second part, the second part being movably mounted with respect to the first part; an electro-hydraulic actuator coupled between the second part and a first anchor point, the actuator comprising a cylinder defining a bore and a piston and rod assembly slidably mounted within the bore and an active chamber within which an increase in fluid pressure causes the actuator to change during a first phase between first and second extension states to move the second part relative to the first part. The electro-hydraulic actuator further includes a hydraulic fluid supply circuit comprising a piezo-electric pump operable to supply pressurised fluid to the active chamber to change the actuator between first and second extension states.

公开(公告)号：US11199130B2

公开(公告)日：2021-12-14

申请号：US16306028

申请日：2016-08-12

Applicant: AVL LIST GMBH

Inventor： Helmut Melde-Tuczai ,  Mario Theissl ,  Siegfried Loesch ,  Florian Bodensteiner ,  Anamaria Munteanu ,  Miroslaw Robaczewski ,  Katrin Wand ,  Abdelkarim Redouane

IPC: F02B75/04 ,  F16C7/06 ,  F16C7/04 ,  F01M1/06 ,  F02D15/02 ,  F15B11/10 ,  F15B13/04 ,  F16H25/20

Abstract: The invention relates to a longitudinally adjustable connecting rod (7) for a reciprocating piston engine, in particular a reciprocating piston internal combustion engine, a reciprocating piston engine, and a vehicle comprising a reciprocating piston engine. The longitudinally adjustable connecting rod (7) comprises a longitudinal adjusting mechanism (8) for adjusting an effective length (L) of the connecting rod, a hydraulically actuated control device (12), switchable at least between two control modes, for controlling the longitudinal adjustment, and an electromagnetically actuated hydraulic switching valve (9) for hydraulically actuating the control device (12).

公开(公告)号：US11198585B2

公开(公告)日：2021-12-14

申请号：US16278389

申请日：2019-02-18

Applicant: TK Elevator Corporation

Inventor： Aravind Samba Murthy

IPC: F15B11/10 ,  B66B1/04 ,  B66B1/30 ,  B66B5/00 ,  B66B9/04 ,  B66B11/04

Abstract: A hydraulic elevator may comprise a bidirectional pump that controls up and down motion of an elevator car. A VVVF drive may cause the bidirectional pump to provide working fluid in a controlled manner to a hydraulic jack that supports the elevator car. A control valve may be disposed between the bidirectional pump and the hydraulic jack so that the control valve can be closed when the elevator car needs to be held in place. To avoid pressure waves that propagate when the control valve is opened with disparate pressures on the pump and jack sides of the control valve, the bidirectional pump may adjust the pressure on the pump side of the closed control valve to the pressure on the jack side of the control valve before the control valve is opened.