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Patent Agency Ranking
公开(公告)号：US10337532B2
公开(公告)日：2019-07-02
申请号：US15367675
申请日：2016-12-02
Applicant: Caterpillar Inc.
Inventor： Pengfei Ma , Aleksandar Egelja , Justin Speichinger , Shuhei Orimoto , Tetsuya Yoshino , Hideki Nakajima , Shogo Tada , Aleem Junaidi , Bryan Johnson , Matthew Beschorner
IPC: F15B13/04 , F15B11/08 , F15B13/02 , F15B21/14 , F15B1/26 , F15B13/044 , F15B11/00 , F15B11/024
Abstract: A hydraulic system is disclosed. The hydraulic system may include a source of pressurized fluid; a tank; a hydraulic actuator including a first chamber and a second chamber; a first independent metering valve disposed between and fluidly connected to the source, the tank, and the first chamber of the hydraulic actuator; and a second independent metering valve disposed between and fluidly connected to the source, the tank, and the second chamber of the hydraulic actuator. Each of the first independent metering valve and the second independent metering valve may include a spool and a valve actuator disposed on one side of the spool. The valve actuator may include a push coil, a pull coil, and a force feedback mechanism configured to balance a force of the push coil and the pull coil.
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公开(公告)号：US10480159B2
公开(公告)日：2019-11-19
申请号：US15613987
申请日：2017-06-05
Applicant: Caterpillar Inc.
Inventor： Anthony Dean McNealy , Corey Lee Gorman , Shogo Tada , Rustin Glenn Metzger , Hideki Nakajima , Justin Douglas Speichinger , Shinya Ohmura
Abstract: A kinetic energy recovery system (KERS) for a machine having a swing motor and/or an actuator includes a hydraulic motor/pump that can output pressurized fluid for operating at least one of: the swing motor and the actuator. A first shaft of the hydraulic motor/pump can be rotated by fluid returning from at least one of: the swing motor and the actuator back to the hydraulic motor/pump. Further, the KERS also includes a flywheel that can selectively couple with the first shaft with the help of a first clutch. The flywheel stores drive power generated by the hydraulic motor/pump from the return flow of fluid when the first clutch couples the flywheel with the first shaft of the hydraulic motor/pump. A gearing arrangement is coupled to the flywheel and can selectively engage with a second shaft associated with a prime mover of the machine with the help of a second clutch.
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公开(公告)号：US10459462B2
公开(公告)日：2019-10-29
申请号：US15629172
申请日：2017-06-21
Applicant: CATERPILLAR INC.
Abstract: A method of using sensor feedback for controlling fluid pressures in a machine includes receiving signals from each of a plurality of Inertial Measurement Units (IMU's) mounted on different components of the machine, receiving a signal from at least one non-IMU sensor, fusing the signals received from the IMU's with each other and with a signal from the at least one non-IMU sensor, determining best estimates of current output joint angles for each of the plurality of components of the machine with reference to a machine reference frame, solving a kinematic equation using the best estimates of current output joint angles for the components of the machine and structural design information characterizing the machine, and applying a determination from the solution of the kinematic equation in an implementation of a controlled adjustment to a fluid pressure supplied to a fluid actuation cylinder.
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公开(公告)号：US20180347152A1
公开(公告)日：2018-12-06
申请号：US15613987
申请日：2017-06-05
Applicant: Caterpillar Inc.
Inventor： Anthony Dean McNealy , Corey Lee Gorman , Shogo Tada , Rustin Glenn Metzger , Hideki Nakajima , Justin Douglas Speichinger , Shinya Ohmura
Abstract: A kinetic energy recovery system (KERS) tier a machine having a swing motor and/or an actuator includes a hydraulic motor/pump that can output pressurized fluid for operating at least one of: the swing motor and the actuator. A first shaft of the hydraulic motor/pump can be rotated by fluid returning from at least one of: the swing motor and the actuator back to the hydraulic motor/pump. Further, the KERS also includes a flywheel that can selectively couple with the first shaft with the help of a first clutch. The flywheel stores drive power generated by the hydraulic motor/pump from the return flow of fluid when the first clutch couples the flywheel with the first shaft of the hydraulic motor/pump. A gearing arrangement is coupled to the flywheel and can selectively engage with a second shaft associated with a prime mover of the machine with the help of a second clutch.
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公开(公告)号：US20180156244A1
公开(公告)日：2018-06-07
申请号：US15367675
申请日：2016-12-02
Applicant: Caterpillar Inc.
Inventor： Pengfei Ma , Aleksandar Egelja , Justin Speichinger , Shuhei Orimoto , Tetsuya Yoshino , Hideki Nakajima , Shogo Tada , Aleem Junaidi , Bryan Johnson , Matthew Beschorner
CPC classification number: F15B13/0402 , F15B1/26 , F15B11/003 , F15B11/024 , F15B11/08 , F15B13/021 , F15B13/024 , F15B13/044 , F15B13/0442 , F15B21/14 , F15B2011/0246 , F15B2211/50
Abstract: A hydraulic system is disclosed. The hydraulic system may include a source of pressurized fluid; a tank; a hydraulic actuator including a first chamber and a second chamber; a first independent metering valve disposed between and fluidly connected to the source, the tank, and the first chamber of the hydraulic actuator; and a second independent metering valve disposed between and fluidly connected to the source, the tank, and the second chamber of the hydraulic actuator. Each of the first independent metering valve and the second independent metering valve may include a spool and a valve actuator disposed on one side of the spool. The valve actuator may include a push coil, a pull coil, and a force feedback mechanism configured to balance a force of the push coil and the pull coil.
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