Patents Examined by Dustin T Nguyen
  • Patent number: 11913477
    Abstract: The present invention provides a controller for a hydraulic apparatus. The controller is configured to determine (410) that a mode change criteria has been met for the hydraulic apparatus. In response to the determination, the controller is configured to control (420) a valve arrangement to change a first actuator chamber of a hydraulic actuator between being fluidly connected to a hydraulic machine and fluidly isolated from a second chamber of the hydraulic actuator, and being fluidly connected to both the second actuator chamber and the hydraulic machine. Further in response to the determination, the controller is configured to control (430) the hydraulic machine to change a flow rate of hydraulic fluid flowing through the hydraulic machine to regulate a movement of the hydraulic actuator during the control of the valve arrangement.
    Type: Grant
    Filed: September 27, 2022
    Date of Patent: February 27, 2024
    Inventors: John Hutcheson, Daniel Abrahams
  • Patent number: 11913530
    Abstract: A torque converter includes a front cover arranged to receive a torque and an impeller having an impeller shell connected to the front cover. The torque converter further includes a turbine in fluid communication with the impeller and including a turbine shell. The torque converter further includes a lock-up clutch including a clutch plate that is non-rotatably connected to the turbine shell.
    Type: Grant
    Filed: August 9, 2022
    Date of Patent: February 27, 2024
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Victor Norwich, Timothy Chamberlain, Larry Chad Boigegrain, Corey Hillegass
  • Patent number: 11913478
    Abstract: A piston unit of a working cylinder includes a piston and a piston rod. The piston has an axial bore hole formed therein. The piston rod is received in the axial bore hole. The piston rod and the piston are connected by a material-bond by a circumferential laser ring weld seam. The laser ring weld seam defines a pressure medium-tight sealing plane.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: February 27, 2024
    Assignee: Buemach Engineering International B.V.
    Inventor: Josef Bueter
  • Patent number: 11898583
    Abstract: In a cushion mechanism of a gas cylinder, when the pressure of a gas in a first pressure chamber is less than or equal to a prescribed pressure, a valve body cuts off communication between the upstream side and downstream side of a discharge flow passage by mean of the biasing force of a spring member. In addition, when the pressure of the gas exceeds the prescribed pressure, the valve body is displaced to the downstream side of the discharge flow passage against the biasing force, thereby enabling communication between the upstream side and the downstream side of the discharge flow passage.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: February 13, 2024
    Assignee: SMC CORPORATION
    Inventors: Seiichi Nagura, Naoki Shinjo, Kazutaka Someya, Akihiro Kazama, Yusuke Mori
  • Patent number: 11898580
    Abstract: The confined plunging liquid jet reactor with energy recovery includes a downcomer having an upper end, an open lower end, and a gas inlet for receiving gas, the downcomer extending into a liquid reservoir in a tank. A nozzle is mounted on the upper end of the downcomer for receiving a pressurized liquid to generate a liquid jet. The liquid jet impinges on liquid contained within the downcomer, creating turbulence and bubbles to entrain gas introduced through the gas inlet into the liquid reservoir as the jet travels downward in the downcomer. A riser is disposed around the downcomer and defines an annular air lift column. Unentrained gas and liquid exiting the downcomer rises in the air lift column with significant energy, the upper end of the riser being connected to a turbine coupled to a generator to recover energy from the air lift column.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: February 13, 2024
    Assignee: KUWAIT UNIVERSITY
    Inventor: Bader Shafaqa Al-Anzi
  • Patent number: 11885104
    Abstract: The invention relates to a hydraulic system for a work machine. The system comprising: a main hydraulic machine connected to an output shaft of an engine of the work machine for providing power to working hydraulics of the work machine; a main pressure line connecting the main hydraulic machine to the working hydraulics; a support hydraulic machine connected to the output shaft; a hydraulic accumulator; a discharge valve connected between the accumulator and an input side of the support hydraulic machine; a charge valve connected between an output side of the support hydraulic machine and the hydraulic accumulator to selectively allow a flow from the support hydraulic machine to the hydraulic accumulator; a flow support valve connected between the output side of the support hydraulic machine and the main pressure line to selectively allow a flow from the support hydraulic machine to the main pressure line; and a hydraulic tank connected to the input side of the support hydraulic machine.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: January 30, 2024
    Assignee: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventor: Valentin Pause
  • Patent number: 11885319
    Abstract: A swash plate compressor including rotor arms protruding from a rotor toward a swash plate and having rotor arm holes; swash plate arms protruding from the swash plate toward the rotor and having swash plate arm holes; and a link arm hingedly coupled to the rotor arms and the swash plate arms by link pins, in which the swash plate arms include a first swash plate arm positioned at a side in rotation direction of the shaft based on the link arm; and a second swash plate arm positioned at a side in a direction opposite to the rotation direction of the shaft based on the link arm, and in which the first swash plate arm has higher wear resistance than the second swash plate arm.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: January 30, 2024
    Assignee: HANON SYSTEMS
    Inventor: Seyoung Song
  • Patent number: 11873894
    Abstract: A working machine includes a first traveling fluid passage connected to a first pressure-receiving portion, a second traveling fluid passage connected to a second pressure-receiving portion, a third traveling fluid passage connected to a third pressure-receiving portion, a fourth traveling fluid passage fluidly connected to a fourth pressure-receiving portion, and a connection fluid passage connecting at least two of the first, second, third and fourth pressure-receiving portions to each other. When a traveling operation member is operated, operation fluid flows to the first pressure receiving portion through the first traveling fluid passage, to the second pressure receiving portion through the second traveling fluid passage, to the third pressure receiving portion through the third traveling fluid passage, and to the fourth pressure receiving portion through the fourth traveling fluid passage.
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: January 16, 2024
    Assignee: KUBOTA CORPORATION
    Inventors: Yuji Fukuda, Jun Tomita, Yuya Konishi, Fumitaka Fujisawa, Daiki Abe, Kohei Kurachi, Yudai Koga, Yuya Tanabe
  • Patent number: 11866912
    Abstract: A power machine can include a hydraulic drive system that includes an infinitely variable hydraulic drive motor. A run-time displacement of the hydraulic motor can be adjusted based on commanded travel speed or based on a output torque. In some case, the run-time displacement can be selected from one of a plurality of displacement ranges, such as a high range and a low range.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: January 9, 2024
    Assignee: Doosan Bobcat North America, Inc.
    Inventors: Charles Young, Marty Carpenter, Scott Becker, Douglas Kallas, Matthew Kaldor, Eric Zabel, Boston Zachmann
  • Patent number: 11866014
    Abstract: A braking apparatus for a vehicle is disclosed. The present disclosure in at least one embodiment provides a braking apparatus for a vehicle, including a master cylinder configured to supply hydraulic pressure to a wheel brake by a depression of a brake pedal, a first flow path and a second flow path configured to supply the hydraulic pressure by interconnecting the master cylinder and the wheel brake, a pump unit configured to discharge the hydraulic pressure to the first flow path and the second flow path by a drive of a motor, and a pulsation dampener having one end including a damper cap and an opposite end including a support ring and configured to interconnect the first flow path and the second flow path and to mitigate a difference in hydraulic pressure between the first flow path and the second flow path.
    Type: Grant
    Filed: July 6, 2021
    Date of Patent: January 9, 2024
    Assignee: HYUNDAI MOBIS CO., LTD.
    Inventor: Sung Ki Ahn
  • Patent number: 11858634
    Abstract: An aircraft store ejector systems and subsystems thereof. Embodiments can include a two-reservoir re-pressurization system wherein a remote reservoir is used to maintain desired pressure in a local ejector reservoir. The system can include a release valve having a vent valve and valve piston. The release valve can control release of pressurized gas to a pitch control valve. The pitch control valve can be configured to distribute the pressurized gas between two or more ejector piston assemblies. One or more of the ejector piston assemblies can include multiple concentric piston stages and piston chambers, the piston chambers configured to contain a volume of gas. The ejector piston assemblies can be configured to compress the volume of gas within the piston chambers as the piston stages are extended out from the aircraft. Such compression can provide a return force to the piston stages.
    Type: Grant
    Filed: August 29, 2022
    Date of Patent: January 2, 2024
    Assignee: Marvin Engineering Co., Inc.
    Inventors: Lee Allen Tobias, Sohrab John Talebian, Robert Ronald Evans
  • Patent number: 11846306
    Abstract: An air cylinder in which a flow rate controller is built in, has a head cover and a rod cover. A pilot air adjustment unit guides exhaust air to a switch valve of the flow rate controller as pilot air, and the switch valve is switched by an increase in the pressure of the pilot air.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: December 19, 2023
    Assignee: SMC CORPORATION
    Inventors: Youji Takakuwa, Akihiro Kazama, Hiroyuki Asahara, Kengo Monden
  • Patent number: 11841034
    Abstract: A piston rod unit and a method for producing a piston rod unit, or a shaft, in light-weight construction, with a rod which is hollowly-drilled by means of a deep bore into the rod shank, and the resulting rod opening is closed subsequently by means of a forging process.
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: December 12, 2023
    Assignee: LIEBHERR-COMPONENTS KIRCHDORF GMBH
    Inventors: Christoph Guhl, Bernhard Müller
  • Patent number: 11835071
    Abstract: A dynamic system for a lifting apparatus is disclosed. The dynamic system includes a first motor and a second motor decoupled from the first motor. During the ascent of the lifting apparatus, only the first motor is involved in the driving of the lifting apparatus. During the descent of the lifting apparatus, only the second motor is involved in charging the battery system. Since the first motor and the second motor are decoupled from each other, the first motor can have a high driving efficiency and the second motor can have a high power generation efficiency, the problem that when only one motor is adopted, the motor needs to balance between the driving efficiency and power generation efficiency is solved. The energy recovery rate of this invention can be increased from 10% in the prior art to about 30%.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: December 5, 2023
    Assignee: NORTH VALLEY RESEARCH, INC.
    Inventors: Binxin Zhou, Shanrui Zhang, Bo Deng, Lin Zhang
  • Patent number: 11835070
    Abstract: A fluid pressure cylinder has a sensor attachment tool mounted thereon. A holder holds the position sensor in a rail structure extending in an axial direction of a cylinder tube and is secured by screwing to a rod cover or a head cover in an arm part provided to one end of the holder.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: December 5, 2023
    Assignee: SMC CORPORATION
    Inventors: Mitsuru Machijima, Hiroyuki Asahara, Aki Iwamoto, Shiori Iwatsuki
  • Patent number: 11808289
    Abstract: A hydraulic fluid pressure amplifier system includes a boost cylinder assembly, an energy storage device in fluid communication with the boost cylinder assembly, and a working cylinder assembly. The boost cylinder assembly is configured to selectively receive a plunger member into a boost cylinder, wherein movement of the plunger member received in the boost cylinder compresses a charge fluid within a blind side volume of the boost cylinder from a first fluid pressure to an amplified fluid pressure greater than the first pressure. The working cylinder assembly is selectively operable responsive to receiving a source hydraulic fluid having a nominal fluid pressure less than the amplified fluid pressure for effecting the movement of the plunger member into the boost cylinder. The energy storage device is operable to selectively receive and store a portion of the charge fluid compressed to the amplified fluid pressure.
    Type: Grant
    Filed: October 25, 2021
    Date of Patent: November 7, 2023
    Assignee: Deere & Company
    Inventors: Michael J. Cliff, Steven R. Fliearman, Benjamin K. Dollins
  • Patent number: 11773879
    Abstract: In a flow rate controller and a drive device, a housing is provided therein with a first flow passage, a second flow passage adjacent to the first flow passage, a first throttle valve provided to the first flow passage, and a second throttle valve provided to the second flow passage. A pilot check valve is provided to the second flow passage and is connected in series to the second throttle valve. A pilot air flow passage communicates with a pilot port of the pilot check valve for supplying and discharging pilot air, and a third throttle valve is provided to the pilot air flow passage. In response to the pressure of the pilot air, the pilot check valve switches between a state in which the passage of exhaust air discharged from an air cylinder is permitted and a state in which passage of the exhaust air is prevented.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: October 3, 2023
    Assignee: SMC CORPORATION
    Inventors: Youji Takakuwa, Akihiro Kazama, Hiroyuki Asahara, Kengo Monden
  • Patent number: 11773878
    Abstract: An artificial muscle includes a housing including an electrode region, an expandable fluid region, a first film layer, and a second film layer. The first film layer and the second film layer each include an inner protective layer having a first elasticity, an outer protective layer having a second elasticity, and a reinforcing layer provided between the inner protective layer and the outer protective layer, the reinforcing layer having a third elasticity greater than the first elasticity of the inner protective layer and the second elasticity of the outer protective layer. The artificial muscle further includes an electrode pair positioned in the electrode region of the housing and between the first film layer and the second film layer, and a dielectric fluid housed within the housing.
    Type: Grant
    Filed: May 18, 2022
    Date of Patent: October 3, 2023
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Michael P. Rowe, Maduran Palaniswamy, Shardul S. Panwar
  • Patent number: 11767660
    Abstract: A control valve of hydraulic system for a working machine is provided, which includes a main body and a spool. The main body includes first, second, third, fourth and fifth ports, and first second, third, fourth and fifth inner fluid paths connected to the first, second, third, fourth and fifth ports, respectively. The spool is configured to move between a neutral position and a communicating position allowing fluid communication between the second inner fluid path and the fifth inner fluid path or between the first inner fluid path and the fifth inner fluid path. The spool includes a communicating hole configured to allow the fluid communication between the second port and the fourth port, or between the first port and the fourth port, when the spool is in a position between the communicating position and the neutral position.
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: September 26, 2023
    Assignee: KUBOTA CORPORATION
    Inventors: Yuji Fukuda, Keigo Honda
  • Patent number: 11759937
    Abstract: An automatic oil return structure is provided. The automatic oil return structure has an oil storage bag, a piston, and a main body assembly. The piston has an oil storage chamber. The main body assembly has a main channel, a piston oil channel, a pressure regulating channel, a control channel, an operation channel, a minor channel, and an oil return channel. When the pressure of the main channel achieves a limit pressure, the pressure pushes the control blocking assembly away such that the pressure regulating channel communicates with the communication channel, and the pressure also pushes the operating assembly away such that the minor channel communicates with the return channel. At the same time, the pressure of the oil storage chamber pushes the oil blocking assembly, so as to isolate the oil storage chamber from the main channel, and the oil storage chamber communicates with the oil return channel.
    Type: Grant
    Filed: November 14, 2022
    Date of Patent: September 19, 2023
    Assignee: KUDOS MECHANICAL CO., LTD.
    Inventor: James Chuan