Patents Examined by Abiy Teka
  • Patent number: 11913301
    Abstract: A bellows assembly for a downhole tool includes a first seal ring, a second seal ring, and a bellows positioned at least partially between the first and second seal rings. The first seal ring, the second seal ring, and the bellows are integral with one another such that the bellows assembly is monolithic. The bellows is configured to expand and retract. The bellows is annular and has a diameter that varies over a length of the bellows. A material composition of the bellows varies over the length of the bellows.
    Type: Grant
    Filed: April 8, 2022
    Date of Patent: February 27, 2024
    Assignee: Schlumberger Technology Corporation
    Inventors: Srinand Karuppoor, Abbigail Ullrich
  • Patent number: 11913195
    Abstract: Provided is a hydraulic machine including an actuator, a first pump and a second pump configured to supply pressurized fluid to the actuator, a driving motor configured to drive the first and second pumps, a first operator input device through which an operator's desire to operate the actuator is input, and a controller. The controller determines displacements of the first and second pumps corresponding to the operator's desire and a speed of rotation of the driving motor and controls the first pump, the second pump, and the driving motor to operate according to the displacements of the first and second pumps and the speed of rotation of the driving motor finally determined in the determination of the displacements of the first and second pumps.
    Type: Grant
    Filed: January 10, 2023
    Date of Patent: February 27, 2024
    Assignee: VOLVO CONSTRUCTION EQUIPMENT AB
    Inventors: Sangki Bae, Donguk Choi, Gyeongmo Min, Byeongsoo Kim
  • Patent number: 11905681
    Abstract: A working machine includes a prime mover, a rotation-speed operation actuator, a rotation detector, a hydraulic pump, a hydraulic unit, an operation valve capable of changing a pilot pressure of a pilot fluid supplied from the hydraulic pump to the hydraulic unit in accordance with an operation of an operation member, an actuation valve operating in accordance with a control signal and capable of changing a primary pressure as the pilot pressure of the pilot fluid supplied from the hydraulic pump to the operation valve, and a controller that outputs the control signal based on a difference between target and actual rotation speeds to the actuation valve to control an opening thereof. The controller has a mode including calculating the control signal based on the difference, correcting the calculated control signal, and increasing or decreasing a target primary pressure value set in accordance with the control signal.
    Type: Grant
    Filed: November 28, 2022
    Date of Patent: February 20, 2024
    Assignee: KUBOTA CORPORATION
    Inventors: Daiki Abe, Ryota Hamamoto, Yuya Tanabe
  • Patent number: 11906985
    Abstract: A valve assembly includes a proportional valve having an opening cross section that can be continuously varied by an actuator; a sensor for sensing the valve output pressure; a digital regulating device; and a switching valve disposed parallel to the proportional valve. The opening cross section of the switching valve is smaller than the maximum opening cross section of the proportional valve. The regulating device is programmed (i) to automatically calculate, at runtime, using the currently given valve output pressure and the current position of the actuator, the maximum working pressure achievable at the maximum opening of the proportional valve with the valve, (ii) and to additionally open the switching valve when the computed maximum achievable working pressure falls below a predefinable target working pressure by a definable deviation value.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: February 20, 2024
    Assignee: Aventics GmbH
    Inventors: Christian Busch, Stefan Tadje
  • Patent number: 11905684
    Abstract: A hydraulic system for a working machine includes: a first hydraulic pump; a first hydraulic device; a hydraulic fluid tank; a first discharge fluid passage to allow hydraulic fluid discharged from the first hydraulic device to flow into the tank; a second hydraulic pump to suck fluid from the tank through a suction fluid passage; a second hydraulic device in which difference between flow rate of fluid from the second hydraulic pump device and that of discharged fluid changes according to actuation; a second discharge fluid passage connected to a suction port of the first hydraulic pump and allowing fluid discharged from the second hydraulic device to flow into the first hydraulic pump; a connecting fluid passage branching from the second discharge fluid passage and connected to the suction fluid passage between the tank and the second hydraulic pump; a supplier to supply fluid to the second discharge fluid passage.
    Type: Grant
    Filed: March 17, 2023
    Date of Patent: February 20, 2024
    Assignee: KUBOTA CORPORATION
    Inventors: Masaki Inaoka, Daiki Abe, Takumi Usui
  • Patent number: 11905981
    Abstract: A system for automatically actuating a hydraulic accumulator—useful for oil collection systems—capable of operation while maintaining a zero or near zero draw of electrical energy.
    Type: Grant
    Filed: May 1, 2023
    Date of Patent: February 20, 2024
    Assignee: GJR Meyer Service, Inc.
    Inventors: Gary Michael Elsik, Noel Donavan McKim, Frank Michael Gonzalez
  • Patent number: 11897577
    Abstract: This saddle-riding type vehicle includes: a transmission that includes a clutch operated by an operation of a slave cylinder; an oil pressure actuator that includes a master cylinder which generates an oil pressure on an operation oil; an oil pressure valve unit that controls transmission of the oil pressure generated by the master cylinder to the slave cylinder; a master-side connection pipe arrangement that connects the master cylinder to the oil pressure valve unit; and a slave-side connection pipe arrangement that connects the oil pressure valve unit to the slave cylinder, wherein the slave cylinder and the oil pressure valve unit are arranged on one side part in a vehicle width direction of the saddle-riding type vehicle, and the oil pressure actuator is arranged on another side part in the vehicle width direction of the saddle-riding type vehicle.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: February 13, 2024
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Akira Tokito, Kuniaki Wakamatsu, Eisuke Kajihara, Junya Ono, Go Morita
  • Patent number: 11898329
    Abstract: Disclosed embodiments of power machines, implements and hydraulic systems utilize a hydraulic flow control circuit and method to implement multiple modes of operation while optimizing hydraulic fluid flow to either or both of primary and secondary function actuators. In a first mode the hydraulic flow control circuit is configured to receive pressurized hydraulic fluid flow from a first conduit and to provide the pressurized hydraulic fluid to the primary and secondary function actuators. In the first mode, the circuit is configured to direct return flow from the primary and secondary function actuators through the second conduit for return to the power machine. In a second mode, the circuit receives flow from the second conduit, provides the flow only to the secondary function actuator, and directs the return flow to the power machine through the first conduit.
    Type: Grant
    Filed: June 30, 2023
    Date of Patent: February 13, 2024
    Assignee: DOOSAN BOBCAT NORTH AMERICA INC.
    Inventors: Ian Brown, Jason Legatt
  • Patent number: 11898325
    Abstract: The invention relates to a device (10) for conducting hydraulic fluid from a first connection (42, 44) to a second connection (38, 40) via at least one conduit (56, 58), having a housing comprising a first housing part (10a) having the first connection (42, 44) and a second housing part (10b) having the second connection (38, 40), which parts can be rotated relative to each other about an axis of rotation (10c) and have a hydraulic rotating union for transferring the hydraulic oil, and securing means (50, 52) are provided for securing the device (10) laterally to a torque motor (20), which comprises a first part (20a) and a second part (20b) that can be pivoted relative to the first part (20a), said first housing part (10a) having a central housing (66), said second housing part (10b) having a central body (68), and said central housing (66) and said central body (68) mutually engaging and being rotatably mounted relative to each other.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: February 13, 2024
    Assignee: HKS DREH-ANTRIEBE GMBH
    Inventors: Marcel Weisgerber, Markus Loehr, Heiko Kern
  • Patent number: 11891773
    Abstract: A rotary machine fixture couples a first rotary machine to a second rotary machine and fixes the first rotary machine and the second rotary machine to a work vehicle. A hydraulic pump drive assembly to supply hydraulic fluid for a work vehicle includes an electric machine configured to convert electrical energy from an electrical supply line to rotary motion, a hydraulic pump configured to circulate the hydraulic fluid through a hydraulic supply line from the rotary motion of the electric machine, a fixture having a first rotary machine interface configured to mount the electric machine to the fixture, a second rotary machine interface configured to mount the hydraulic pump to the fixture, and a work vehicle interface configured to mount the fixture to the work vehicle such that the hydraulic pump and the electric machine are fixed to the work vehicle through the fixture.
    Type: Grant
    Filed: October 26, 2020
    Date of Patent: February 6, 2024
    Assignee: DEERE & COMPANY
    Inventor: Matthew T. Hoover
  • Patent number: 11879532
    Abstract: A torque converter, including: a cover arranged to receive torque; an impeller including an impeller shell connected to the cover and at least one impeller blade; a turbine in fluid communication with the impeller and including a turbine shell and at least one turbine blade; and a stator assembly. The stator assembly includes: a stator including at least one stator blade axially disposed between the turbine and the impeller; a one-way clutch including an outer race non-rotatably connected to the stator and an inner race arranged to non-rotatably connect to a stator shaft; and a combination washer and seal including a first portion axially disposed between the turbine shell and the stator and a second portion extending radially inwardly from the first portion and arranged to at least partially seal against the stator shaft.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: January 23, 2024
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Victor Norwich
  • Patent number: 11879444
    Abstract: A positive displacement pump, including at least a cylinder, provided with at least an entrance aperture and at least an exit aperture for the liquid and a plunger, mobile inside the cylinder by means of a first actuator and configured to transfer the liquid from the entrance aperture to the exit aperture; the cylinder is provided with at least a first inactive position and at least a second working position between which it can be selectively positioned in an automatic and adjustable manner by at least one second actuator.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: January 23, 2024
    Assignee: I.M.A. INDUSTRIA MACCHINE AUTOMATICHE S.P.A.
    Inventors: Claudio Trebbi, Luca Stefanini
  • Patent number: 11866017
    Abstract: A brake actuator for a railway vehicle brake system has a thrust sleeve configured to provide braking force to the brake system, and a slide axially moveable in the thrust sleeve between a release position and a locking position. The actuator further has a piston biased by spring means and linked to an anchoring member. A plurality of balls are disposed in respective openings of the sleeve between the slide and the anchoring member. In the locking position, the balls are configured to move under the action of a profiled surface of the slide to axially couple the anchoring member with the sleeve. In the release position, the balls are configured to axially uncouple the anchoring member from the sleeve. The profiled slide surface has a locking groove configured to engagingly receive the balls when the slide is in the locking position.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: January 9, 2024
    Assignee: Wabtec Faiveley Nordic AB
    Inventors: Tobias Persson, Gustav Rehnborg
  • Patent number: 11866910
    Abstract: A drive assembly for a work vehicle has a drive housing, including a first housing element forming a reaction member, a drive shaft, a planetary gear set coupled to the drive shaft and configured to selectively rotate an output element. The planetary gear set has an input component, an output component and a reaction component. One or more input clutch arrangements at an input side of the drive assembly are configured to selectively interface with the planetary gear set to effect a rotation speed of the output element. A control clutch arrangement interfaces with the reaction member and the reaction component. The control clutch arrangement is configured to selectively couple and decouple the reaction member from the reaction component to damp a torque increase transmitted to the output element.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: January 9, 2024
    Assignee: DEERE & COMPANY
    Inventors: Steven R. Fliearman, Clayton G. Janasek
  • Patent number: 11858787
    Abstract: System and methods for a DC powered hydraulic system capable of providing control over pressurized hydraulic fluid delivered to directional valves without the need for a PTO and/or a proportional valve. The hydraulic system controls the output from a battery to a direct current hydraulic pump.
    Type: Grant
    Filed: November 22, 2021
    Date of Patent: January 2, 2024
    Assignee: Kar-Tech, Inc.
    Inventor: Hassan Karbassi
  • Patent number: 11859702
    Abstract: A flow channel structure forms a first flow channel which makes a first fluid chamber and a second fluid chamber communicate with each other therethrough. The flow channel structure includes first to third plates. The first plate includes a first through hole penetrating the first plate in a thickness direction to open to the first fluid chamber. The second plate includes a second through hole penetrating the second plate in the thickness direction to open to the second fluid chamber. The third plate includes a first connecting through hole penetrating the third plate in the thickness direction. The first connecting through hole is larger in flow channel area than each of the first and second through holes. The first and second through holes are disposed in different positions from each other as seen in the thickness direction. The first connecting through hole communicates with the first and second through holes.
    Type: Grant
    Filed: August 16, 2022
    Date of Patent: January 2, 2024
    Assignee: Exedy Corporation
    Inventor: Yusuke Tomita
  • Patent number: 11851846
    Abstract: An excavator including a lower traveling body; an upper turning body turnably mounted to the lower traveling body; a work attachment attached to the upper turning body; an imaging device mounted to the upper turning body; a hydraulic actuator; a hydraulic pump configured to supply hydraulic oil to the hydraulic actuator; an electric motor configured to drive the hydraulic pump; an operation device of an electric type configured to operate the hydraulic actuator; and a control device configured to control the electric motor, wherein in response to determining that the operation device is not operated, the control device causes the hydraulic pump to automatically stop, and subsequently, in response to determining that an operation with respect to the operation device is started, the control device causes the hydraulic pump to be automatically activated.
    Type: Grant
    Filed: September 27, 2021
    Date of Patent: December 26, 2023
    Assignee: SUMITOMO CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Jitsutaka Takeo, Manabu Ito
  • Patent number: 11851044
    Abstract: A pedal travel simulator for a hydraulic powered vehicle braking system. In order to realize a “jump-in,” a first piston spring is provided that, after a first displacement path, loads a simulator piston of the pedal travel simulator with a spring force that is higher by a multiple than that of a second piston spring that loads the simulator piston during the first displacement path.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: December 26, 2023
    Assignee: Robert Bosch GmbH
    Inventors: Andreas Weh, Martin Hagspiel, Harald Guggenmos
  • Patent number: 11851843
    Abstract: A hydraulic machine includes a tank; a working device including a boom; a boom cylinder which operates the boom and has a large chamber and a small chamber; a floating hydraulic circuit connected to the large chamber, the small chamber, and the tank so as to enable the large chamber, the small chamber, and the tank to communicate with each other; and an operator input device for receiving, from a driver, a request for turning on or turning off the floating hydraulic circuit. In the case of a boom down operation for lowering the boom, it is determined whether the working device floats in the air, and when it is determined that the working device floats in the air, the floating hydraulic circuit can be turned off, even if the request for turning on the floating hydraulic circuit is input to the operator input device.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: December 26, 2023
    Assignee: Volvo Construction Equipment AB
    Inventors: Taerang Jung, Sangmin Gwon, Sangki Bae
  • Patent number: 11846085
    Abstract: A hydraulic pump supplies hydraulic energy to a hydraulic system load. A vehicle controller establishes a commanded rotor speed for the motor or electric machine based on a target pump rotational speed of a pump rotor or pump shaft for operation of the hydraulic pump at a set point or within an operational region consistent with the hydraulic system load or estimated work task of the vehicle for one or more sampling intervals, where the set point or operational region is defined by a hydraulic pump flow rate versus head characterization curve and where the target pump rotational speed can be independent of a rotational speed of the engine shaft (e.g., in a first mode).
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: December 19, 2023
    Assignee: DEERE & COMPANY
    Inventors: Long Wu, Eric Vilar