Patents Examined by Michael Leslie
  • Patent number: 11959252
    Abstract: A hydraulic apparatus has a plurality of pump modules each of which is formed by a plurality of working chambers having a common high pressure manifold. A connecting circuit switchably connects pump modules to first and second hydraulic circuit portions to allocate capacity as first and second demands for hydraulic fluid vary. In an apparatus which may have two or more connecting circuit outputs, valves may be controlled or working chamber pumping cycles made inactive to facilitate the reallocation of a pump module from one output to another, and a control strategy addresses pump module allocation when the demands for hydraulic fluid exceed available capacity.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: April 16, 2024
    Assignee: ARTEMIS INTELLIGENT POWER LIMITED
    Inventors: Niall Caldwell, Uwe Stein, Jill Macpherson, Matthew Green, Callan MacKay
  • Patent number: 11951956
    Abstract: A brake system includes a single chamber power transmission unit, a plurality of wheel brakes, and an iso/dump control valve arrangement associated with each wheel brake of the plurality of wheel brakes. A reservoir is hydraulically connected to the single chamber power transmission unit and to each of the iso/dump control valve arrangements. A pump piston is associated with at least one wheel brake. The pump piston is driven by a second electric motor for selectively providing pressurized hydraulic fluid from the reservoir to the iso/dump control valve arrangement of the at least one associated wheel brake. First and second switching valves are provided, and are two-position, three-way type valves, each hydraulically interposed between at least one iso/dump control valve arrangement and both of a selected pump piston and the output line of the single chamber power transmission unit. First and second electronic control units are provided.
    Type: Grant
    Filed: August 30, 2022
    Date of Patent: April 9, 2024
    Assignee: ZF Active Safety US Inc.
    Inventor: Blaise J. Ganzel
  • Patent number: 11953000
    Abstract: A linear drive assembly configured for use within a power end assembly. The linear drive assembly is configured to interconnect a crankshaft and a pony rod and comprises a crosshead assembly attached to a connecting rod assembly. In one or more embodiments disclosed herein, the connecting rod assembly is configured to attach to opposite sides of the crosshead assembly so that no portion of the connecting rod assembly is disposed within an interior of a crosshead included in the crosshead assembly.
    Type: Grant
    Filed: April 24, 2023
    Date of Patent: April 9, 2024
    Assignee: Kerr Machine Co.
    Inventors: Kelcy Jake Foster, Micheal Cole Thomas, Christopher Todd Barnett, Nicholas Son, John Keith, Guy J. Lapointe
  • Patent number: 11953030
    Abstract: A hydraulic system (1) for an industrial truck, in particular an electrically operated, battery-powered industrial truck, includes a lift drive (2) to raise and lower a load handling device. The hydraulic system (1) has a first hydraulic pump (5) which is configured to supply the lift drive (2) with hydraulic fluid, and a second hydraulic pump (6) which can be switched on by means of a valve device (7) for the supply of the lift drive (2). The first hydraulic pump (5) and the second hydraulic pump (6) are configured as a hydraulic double pump unit (1) and the valve device (7) is integrated into the hydraulic double pump unit (10).
    Type: Grant
    Filed: November 18, 2022
    Date of Patent: April 9, 2024
    Assignee: STILL GmbH
    Inventor: Markus Schwab
  • Patent number: 11953035
    Abstract: A working machine includes a prime mover, a hydraulic pump driven by power of the prime mover, a cooler including a cooling fan rotated by either the power of the prime mover or hydraulic fluid delivered from the hydraulic pump, and a controller configured or programmed to perform a reduction control for reducing a target fan rotation speed that is a target rotation speed of the cooling fan in response to reduction of an actual prime mover rotation speed that is an actual rotation speed of the prime mover, and to perform, after the reduction control, a restoration control for restoring the target fan rotation speed. The controller is configured or programmed to make a difference between a reduction rate of the target fan rotation speed in the reduction control and an increase rate of the target fan rotation speed in the restoration control.
    Type: Grant
    Filed: July 12, 2023
    Date of Patent: April 9, 2024
    Assignee: KUBOTA CORPORATION
    Inventors: Daiki Abe, Ryota Hamamoto, Hiroaki Nakagawa
  • Patent number: 11946226
    Abstract: Provided is a work machine capable of achieving both low fuel consumption and ensuring of workability. The work machine is configured to, in a state where an output of an engine or hydraulic pump has increased to an increase threshold (S12: Yes) with the rotational speed being at a first rotational speed (S11: Yes), raise the rotational speed from the first rotational speed to a second rotational speed (S13); in a process of raising the rotational speed to the second rotational speed, output, to a regulator, a signal instructing reduction in the discharge rate (S14) so as to keep the output of the engine or hydraulic pump constant; and after the rotational speed has reached the second rotational speed, output, to the regulator, a signal instructing increase in the discharge rate (S16) so as to make the output of the engine or hydraulic pump have a value corresponding to a request load.
    Type: Grant
    Filed: December 17, 2021
    Date of Patent: April 2, 2024
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Masatoshi Hoshino, Seiji Hijikata, Yasutaka Tsuruga, Ryou Yagisawa, Shou Furukawa
  • Patent number: 11939739
    Abstract: The invention relates to a method (19) of operating a hydraulic arrangement (1) including a mounting base (5), a boom (3) that is pivotably arranged on the mounting base (5), and a Z-kinematics (2) that is arranged on the boom (3). The Z-kinematics (2) tilts a tool attachment device (10), that is pivotably arranged on the boom (3). The boom (3) is moved by a lifting hydraulic piston (7) that is connected to the boom (3) and to the mounting base (5). The Z-kinematics (2) is moved by at least a tilting hydraulic piston (11) that is connected to a lever of the Z-kinematics (2) and to the mounting base (5). On application of an input control command for changing the position of the lifting hydraulic piston (7), a compensation command is automatically generated and applied to the tilting hydraulic piston (11), to essentially maintain the attitude of the tool attachment device (10).
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: March 26, 2024
    Assignee: DANFOSS POWER SOLUTIONS INC.
    Inventors: Erik Westergaard, Henrik Hauge
  • Patent number: 11939995
    Abstract: Disclosed here is a system and method to control multiple eversion-based actuators using a single motor, or no motor, thereby reducing the size and cost of the multiple eversion-based actuators. An activation mechanism can include a motor rotating in an expansion direction, rotating shaft, clutch, brake, pressure source under high pressure, and/or valve. The activation mechanism can cause the actuators including a wound reel of material to unwind and lengthen. A retraction mechanism can include a motor rotating in a contraction direction opposite the expansion direction, rotating shaft, clutch, pressure source having low pressure, valve associated with the pressure source, and/or the passive retraction system. The retraction mechanism can cause the actuators to rewind and shorten.
    Type: Grant
    Filed: January 23, 2023
    Date of Patent: March 26, 2024
    Assignee: ELECTRONICS FOR IMAGING, INC.
    Inventor: Eduardo Bueno Espinal
  • Patent number: 11933330
    Abstract: A pneumatic hydraulic retractable device includes a fluid pressure cylinder having a cylinder body and a plug seat disposed in the cylinder body, a piston rod movably disposed in the fluid pressure cylinder, a control valve set having a valve seat disposed at the piston rod and forms an upper fluid chamber and a lower fluid chamber with the cylinder body therebetween, and a valve rod disposed in the valve seat for controlling communication between the upper and lower fluid chambers, and a pressure relief element forming a pressure relief gap with the piston rod. The pressure relief gap communicates with the lower fluid chamber through a communication portion of the pressure relief element. As such, when the valve rod is opened, the fluid is allowed to flow between the lower fluid chamber and the pressure relief gap through the communication portion for reducing airtight effect.
    Type: Grant
    Filed: June 15, 2023
    Date of Patent: March 19, 2024
    Assignee: J.D COMPONENTS CO., LTD.
    Inventors: Pin-Chieh Feng, Nien-Teng Kuo
  • Patent number: 11933332
    Abstract: A hydraulic drive system for an agricultural implement includes a high pressure supply line configured to provide hydraulic fluid under pressure. The hydraulic drive system also includes a low pressure return line configured to return the hydraulic fluid. The hydraulic drive system further includes a plurality of hydraulic motors and coupled to the high pressure supply line. The hydraulic drive system still further includes a plurality of cylinder systems isolated from the high pressure supply line to minimize a supply pressure of the hydraulic fluid provided from a pump coupled to the high pressure supply line and to minimize throttling losses in the hydraulic drive system during operation of the hydraulic drive system.
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: March 19, 2024
    Assignee: CNH Industrial America LLC
    Inventors: Francesco Pintore, Stefano Fiorati, Eugenio Leati, Trevor Philip Stanhope, Xiaofan Guo, Andrea Vacca, Patrick Michael Stump
  • Patent number: 11926986
    Abstract: A hydraulic excavator drive system includes: a first pump connected to a head-side chamber of a boom cylinder; and a second pump that supplies hydraulic oil to at least one of an arm cylinder or a bucket cylinder. The first pump is driven by an electric motor. The drive system further includes: a first switching valve located on a rod-side line; and a second switching valve located on a relay line. The first switching valve opens the rod-side line at a boom raising operation, but blocks the rod-side line except at the boom raising operation. The second switching valve blocks the relay line at the boom raising operation, but opens the relay line at a vehicle body lifting operation.
    Type: Grant
    Filed: July 29, 2021
    Date of Patent: March 12, 2024
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Akihiro Kondo, Hideyasu Muraoka, Yoshiyuki Tode
  • Patent number: 11927184
    Abstract: A displacement pump is configured to mount to a drive housing. A reciprocating drive is connectable to a pump rod of the displacement pump and includes a connecting rod and a drive link that receives a head of the pump rod. A flange projects from a pump body of the pump and a ring projects from the pump body of the pump. A portion of the drive housing is received in a gap between the flange and the ring.
    Type: Grant
    Filed: August 8, 2023
    Date of Patent: March 12, 2024
    Assignee: Graco Minnesota Inc.
    Inventors: David J. Thompson, Christopher A. Lins, Andrew J. Kopel, Glen W. Davidson, Chad R. Taszarek, Chris W. Sydow, William M. Blenkush, Steve J. Wrobel
  • Patent number: 11927204
    Abstract: A hydraulic powering system includes a hydraulic cylinder, an accumulator, and a manifold assembly. The hydraulic cylinder includes: (i) a hydraulic cylinder construction having a hydraulic cylinder wall and first and second hydraulic cylinder end caps forming an internal volume, a piston constructed to slide within the internal volume between the first and second hydraulic cylinder end caps and dividing the internal volume into an extend region and a retract region, and a piston rod extending from the piston and through the retract region and one of the first and second end caps to outside the hydraulic cylinder; (ii) an extend port in fluid connection with the extend region of the hydraulic cylinder; and (iii) a retract port in fluid communication with the retract region of the hydraulic cylinder.
    Type: Grant
    Filed: October 17, 2022
    Date of Patent: March 12, 2024
    Assignee: Industries Mailhot Inc.
    Inventor: Jeremy J. Gabor
  • Patent number: 11927183
    Abstract: A fluid spraying system includes a displacement pump configured to mount to a drive housing. A reciprocating drive is connectable to a pump rod of the displacement pump and includes a connecting rod and a drive link that receives a head of the pump rod. A tightening ring that includes threading is configured to rotate about a cylinder of the pump and shift axially along the cylinder and engage with a bottom side of the drive housing to secure the displacement pump to the drive housing.
    Type: Grant
    Filed: August 8, 2023
    Date of Patent: March 12, 2024
    Assignee: Graco Minnesota Inc.
    Inventors: David J. Thompson, Christopher A. Lins, Andrew J. Kopel, Glen W. Davidson, Chad R. Taszarek, Chris W. Sydow, William M. Blenkush, Steve J. Wrobel
  • Patent number: 11927205
    Abstract: A hydraulic system includes: an arm hydraulic cylinder; a first hydraulic pump and a second hydraulic pump; an arm first direction switching valve; an arm second direction switching valve; and a controller that controls an operation of the arm second direction switching valve when the arm hydraulic cylinder is extended and operated. Further, the arm first direction switching valve incorporates an arm regeneration passage capable of supplying oil when the arm hydraulic cylinder is extended and operated, and the controller monitors a pressure state of the arm hydraulic cylinder, and when determining that oil flow through the arm regeneration passage is possible, the controller blocks oil flow between the arm hydraulic cylinder and the arm second direction switching valve, and otherwise, the controller operates the arm second direction switching valve so that oil can be supplied from the second hydraulic pump to the bottom chamber.
    Type: Grant
    Filed: February 19, 2021
    Date of Patent: March 12, 2024
    Assignee: Komatsu Ltd.
    Inventors: Yuichi Hishinuma, Shinobu Nagura
  • Patent number: 11927206
    Abstract: A hybrid actuation device that includes a first plate coupled to a second plate, a shape memory alloy wire coupled to the first plate, and an artificial muscle positioned between the first plate and the second plate. The artificial muscle includes a housing having an electrode region and an expandable fluid region, a first electrode and a second electrode each disposed in the electrode region of the housing and a dielectric fluid disposed within the housing. The expandable fluid region of the housing is positioned apart from a perimeter of the first plate and the second plate. A first alignment aid is positioned between the first plate and the first electrode, the first alignment aid having an inner surface facing the first plate and an outer surface facing the first electrode.
    Type: Grant
    Filed: February 3, 2023
    Date of Patent: March 12, 2024
    Assignee: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
    Inventors: Michael P. Rowe, Max Herzog, Maduran Palaniswamy, Ryohei Tsuruta
  • Patent number: 11920677
    Abstract: A system including a gearbox and a hydraulic machine connected by a working fluid circuit. The gearbox including a gearbox housing having first and second gearbox fluid passages integrated into the gearbox housing. The hydraulic machine including a case having first and second hydraulic machine fluid passages, the first and second hydraulic machine fluid passages being integrated into the case. A set of rotating elements enclosed within the case. The first gearbox fluid passage and the first hydraulic machine fluid passage align to form a feed passage to conduct fluid at a first pressure from a first source to the set of rotating elements. The second gearbox fluid passage and the second hydraulic machine fluid passage align to form a charge passage to conduct fluid at a second pressure from a second source to the set of rotating elements. The first pressure being less than the second pressure.
    Type: Grant
    Filed: February 1, 2022
    Date of Patent: March 5, 2024
    Assignee: Caterpillar Inc.
    Inventors: Christopher W. Pruess, Aaron B. Crabtree, Jeremiah C Johnson
  • Patent number: 11920582
    Abstract: The plunger of the present disclosure includes: a plunger main body section that is made of sapphire, has a pillar shape, and includes a non-penetrating fitting hole extending in a central axis direction from one end portion; a core portion that is inserted into the fitting hole and has a higher thermal conductivity than sapphire; and a joint layer that is interposed between an inner peripheral surface and a bottom surface of the fitting hole of the plunger main body section, and an outer peripheral surface and a tip surface of the core portion, the joint layer being configured to bond the plunger main body section and the core portion. A pump includes the plunger. A liquid analysis device includes the pump.
    Type: Grant
    Filed: December 25, 2020
    Date of Patent: March 5, 2024
    Assignee: KYOCERA CORPORATION
    Inventor: Satoru Tsubokura
  • Patent number: 11913542
    Abstract: A vehicle hydraulic control system comprises a high-low pressure decoupling valve, a high-pressure control oil circuit including a main pressure regulating pilot solenoid valve connected to a transmission controller and used for regulating the main oil pressure according to the instructions of the transmission controller and a main pressure regulating mechanical valve, a low-pressure cooling and lubricating oil circuit, a mechanical pump communication with the high-pressure control oil circuit, and an electronic pump is in communication with the high-pressure control oil circuit or the low-pressure cooling and lubricating oil circuit by means of the high-low pressure decoupling valve. The main pressure regulating mechanical valve is used for guiding the flow output by the electronic pump and/or the mechanical pump in communication with the high-pressure control oil circuit to the low-pressure cooling and lubricating oil circuit according to the control of the main pressure regulating pilot solenoid valve.
    Type: Grant
    Filed: May 31, 2021
    Date of Patent: February 27, 2024
    Assignee: GUANGZHOU AUTOMOBILE GROUP CO., LTD.
    Inventors: Yang Yang, Jiahao Zhou, Hanqing He, Yiguo Lu, Weiming Zhang, Peng Liu
  • Patent number: 11913479
    Abstract: An impact-resistant balanced hydro-cylinder with pressure relief and buffering protection comprises a cylinder body (11), a piston (13), a piston rod (14), and a first valve core (21) and a second valve core (51) slidable relative to the cylinder body (11). A closed first gas cavity (22) and a closed second gas cavity (52) are respectively formed between the two valve cores and inner walls of two opposite ends of the cylinder body (11). A closed first oil cavity (32) and a closed second oil cavity (42) are respectively formed between the two valve cores and two end faces of the piston (13). A through hole (33) for the first oil cavity and a through hole (43) for the second oil cavity are respectively provided in the positions on the cylinder body (11) corresponding to the first oil cavity (32) and the second oil cavity (42).
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: February 27, 2024
    Assignee: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Lirong Wan, Xuehui Yu, Dejian Ma, Jiantao Wang, Fengwen Xin, Zhaoji Li, Guoqing Qi, Baolong Chen