Patents Examined by Huan Le
  • Patent number: 11993266
    Abstract: A transmission control system of an electric vehicle includes a motor configured to generate drive torque; a transmission configured to perform multi-stage shifting using a dog clutch in a restraint relationship with a one-way clutch configured to transmit forward power of the motor; a speed sensor configured to measure a rotation speed on an output side of the transmission; a motor control unit configured to control the drive torque from the motor according to a driver's accelerator position signal (APS) value; and a vehicle control unit configured to control the multi-stage shifting of the transmission according to a torque command based on the APS value, and to perform clutch alignment control by moving up a sleeve in a reverse direction to contact a hub through a reverse rotation operation of gear teeth by applying reverse rotation torque of predetermined drive force through the motor in a pre-engagement state of the dog clutch.
    Type: Grant
    Filed: August 29, 2023
    Date of Patent: May 28, 2024
    Inventors: Dongwon Jeoung, Sunghyun Cho, Sangmo Ha, Jongyun Park, Jungwoo Seo
  • Patent number: 11994197
    Abstract: A power transmission device having: a case formed by assembling a first case member and a second case member; and a shaft member supported by the case, the power transmission device comprising: a protrusion provided to the first case member and protruding in the axial direction along to the direction of assembling the case; and a recess provided to the second case member and recessed in the axial direction. The shaft member is supported by the protrusion in the recess.
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: May 28, 2024
    Inventors: Ryuzaburo Kobayashi, Kunihiko Fukanoki, Akira Kamiyama
  • Patent number: 11993343
    Abstract: A transmission structure of a hub motor has a hub shell, an axle, a motor unit, and a clutch assembly. The clutch assembly connects with the hub shell and the motor unit, and includes a driving ring, an output disc, a fixing base, a clutch disc, and a pressing ring. The motor unit drives the driving ring to rotate. The output disc is capable of driving the hub shell to rotate. The driving ring drives the clutch disc to rotate and further drives the pressing ring; the pressing ring then pushes the clutch disc to contact the output disc and further drives the output disc to rotate. The fixing base is magnetic and is disposed between the output disc and the motor unit. The clutch disc is magnetically attractable such that the clutch disc separates from the output disc when the motor unit stops working to prevent the motor unit from providing resistance.
    Type: Grant
    Filed: June 27, 2023
    Date of Patent: May 28, 2024
    Inventors: Hao-Lun Huang, Hsiao-Yu Wang
  • Patent number: 11982342
    Abstract: In a bevel gear pair, a first gear and a second gear are applied with tooth top modification, and a ratio of a distance from a pitch circle to a starting position of the tooth top modification to a distance from the pitch circle to a tooth top in the first gear is larger than a ratio of a distance from a pitch circle to a starting position of the tooth top modification to a distance from a pitch circle to a tooth top in the second gear. Thus, the bevel gear pair that can achieve smooth meshing is provided.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: May 14, 2024
    Assignee: Musashi Seimitsu Industry Co., Ltd.
    Inventor: Shuhei Nomura
  • Patent number: 11976696
    Abstract: A one-way clutch includes a C-shaped spring having one end thereof engaged by the inner ring and the other end abutting a roller at one end of a row of rollers that abut each other, thereby engaging the rollers with the outer ring and the inner ring. The inner ring has a radius at the engaging end of the cam surface opposed to the roller at the other end of the row of the rollers larger than its radii at the engaging ends of the cam surfaces opposed to the other rollers of the same row.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: May 7, 2024
    Inventor: Shoji Itomi
  • Patent number: 11976723
    Abstract: [PROBLEMS] To reduce a sense of discomfort given to a driver due to vehicle deceleration caused by a downshift that is not intended by the driver, which is caused by a failure of a rotation speed sensor or the like. [SOLUTIONS] An automatic transmission includes: a transmission mechanism configured to shift rotation of a driving source and transmit the rotation to a driving wheel; and a clutch configured to control transmission of a torque from the driving source to the driving wheel, wherein when a change rate of a rotation speed of the driving source is equal to or higher than a predetermined change rate, a torque transmission capacity of the clutch is reduced.
    Type: Grant
    Filed: January 11, 2022
    Date of Patent: May 7, 2024
    Inventor: Kazue Shimokawara
  • Patent number: 11965564
    Abstract: A clutch for a rotary shaft includes an annular pressure chamber with a sleeve surface engaging a surface to drivingly connect the shaft to the clutch, and further includes a trigger device and a channel system activatable by the trigger device upon a relative angular movement between the shaft and the chamber to release the shaft from the housing. The trigger device has a cam wheel having a constant first radius across a first angular interval and a second, smaller, radius across a second angular interval. The cam wheel is supported on an envelope surface within the first angular interval and rotating in relation to the envelope surface when the shaft rotates in relation to the housing. When a contact point reaches the second angular interval, the cam wheel is displaced to activate said channel system.
    Type: Grant
    Filed: August 30, 2023
    Date of Patent: April 23, 2024
    Inventor: Curt Falk
  • Patent number: 11965561
    Abstract: An inner drum that includes a coupling part having an external surface and an internal surface, wherein the internal surface contains splines. An annular trough is engaged to the exterior surface of the coupling part. A circular wall contains a plurality of appendages extending upward from the circular wall. At least one slot is disposed within the appendages for receiving a snap ring.
    Type: Grant
    Filed: December 2, 2022
    Date of Patent: April 23, 2024
    Assignee: RevMax Performance, LLC
    Inventor: Frank C. Kuperman
  • Patent number: 11965565
    Abstract: A system for controlling a clutch is provided with: a thrust member movable between a first position for disconnecting the clutch and a second position for connecting the clutch; a solenoid generating a magnetic flux in response to input of electric power; a movable element drivingly coupled with the thrust member and set into motion by the magnetic flux to drive the thrust member between the first position and the second position; an electric circuit configured to add alternating-current power to the electric power and apply the electric power with the alternating-current power to the solenoid; and a controller configured to detect a phase difference of an electric current relative to an electric voltage in the alternating-current power added to the electric power and compare the detected phase difference with a reference value to determine whether the thrust member is at the first position or at the second position.
    Type: Grant
    Filed: June 13, 2023
    Date of Patent: April 23, 2024
    Assignee: GKN Automotive Limited
    Inventor: Yuu Yaguchi
  • Patent number: 11959521
    Abstract: A clutch actuating device includes an actuating cylinder having a piston, a multiplier cylinder, and at least one rod extending from the multiplier cylinder to the piston of the actuating cylinder. The actuating cylinder has a rod-side chamber and a clutch actuation chamber with the piston extending therebetween. The rod-side chamber has a port for connection to a first pressure source, and the clutch actuation chamber has a port for connection to a slave cylinder of a hydraulic clutch. A passage interconnects the rod-side chamber with the clutch actuation chamber, and a check-valve is located in the passage. The check-valve only permits flow between the rod-side chamber and the clutch actuation chamber for purposes of compensating for changes of volume of fluid due to temperature change and only when the piston is retracted to an idle position.
    Type: Grant
    Filed: June 21, 2023
    Date of Patent: April 16, 2024
    Inventor: John R. Mickowski
  • Patent number: 11952749
    Abstract: A control device for a power machine includes a target circuit pressure specifying unit configured to specify a target circuit pressure of the hydrostatic continuously variable transmission, a measurement value acquisition unit configured to acquire an actual circuit pressure of the hydrostatic continuously variable transmission, a brake torque determination unit configured to determine a brake torque based on the target circuit pressure and the actual circuit pressure, and a pump control unit configured to control the hydraulic pump based on the brake torque. The brake torque is a torque consumed by the hydraulic pump.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: April 9, 2024
    Assignee: KOMATSU LTD.
    Inventors: Kenichi Yamada, Shogo Miyazaki, Akira Takeno, Shota Yamawaki
  • Patent number: 11946382
    Abstract: Gearboxes for aircraft gas turbine engines, in particular to arrangements for journal bearings such gearboxes, and to related methods of operating such gearboxes and gas turbine engines. Example embodiments include a gearbox for an aircraft gas turbine engine, the gearbox including: a sun gear; a plurality of planet gears surrounding and engaged with the sun gear; and a ring gear surrounding and engaged with the plurality of planet gears, each of the plurality of planet gears being rotatably mounted around a pin of a planet gear carrier with a journal bearing having an internal sliding surface on the planet gear and an external sliding surface on the pin.
    Type: Grant
    Filed: July 10, 2023
    Date of Patent: April 2, 2024
    Assignee: ROLLS-ROYCE PLC
    Inventor: Mark Spruce
  • Patent number: 11946512
    Abstract: A pulley unit has a hub configured to be connected to a crankshaft, a pulley coaxial to the hub and supported in a rotationally free manner with respect thereto, a clutch interposed between the hub and the pulley, and an actuator for controlling the clutch, The clutch has an inner disc rotationally coupled to the hub and an engagement portion housed inside the pulley, a mobile member axially movable between an engagement position in which the mobile member rotationally couples the pulley to the engagement portion of the inner disc and a disengagement position in which the pulley is rotationally free with respect to the inner disc, and an elastic element acting on the mobile member to push it towards the engagement position.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: April 2, 2024
    Assignee: DAYCO EUROPE S.R.L.
    Inventors: Federico Domenico Licata, Alessio Courtial, Gregorio Luciani, Walter Ventura
  • Patent number: 11940021
    Abstract: A roller freewheel includes a roll body cage, a plurality of roll bodies accommodated in the roll body cage, and a ramp ring having a ramp contour. The ramp contour blocks the roll bodies in a first direction of rotation and allows rotation of the roll bodies relative to the ramp ring in a second direction of rotation, opposite the first direction of rotation. The ramp contour is designed to accommodate a plurality of roll body rows. The roll body cage includes a plurality of separate partial cages, with each partial cage including at least one roll body row.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: March 26, 2024
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Alexander Reimchen, Frank Schoenstein
  • Patent number: 11940012
    Abstract: A normal-time drive cam groove extends from a drive cam specific point, which is defined as a specific point of the drive cam, toward one side in a circumferential direction of the drive cam. A groove bottom at the normal-time drive cam groove is sloped relative to one end surface of the drive cam such that a depth of the groove bottom continuously decreases from the drive cam specific point toward the one side in the circumferential direction of the drive cam. An emergency-time drive cam groove extends from the drive cam specific point toward another side in the circumferential direction of the drive cam.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: March 26, 2024
    Inventors: Akira Takagi, Ryo Ishibashi, Takumi Sugiura
  • Patent number: 11933373
    Abstract: A power tool including a housing and a motor housed in the housing. There is a spring engine housed in the housing and a driver blade driven by the spring engine. Additionally, the power tool holds a pipe clamp configured to be driven into a workpiece by the driver blade.
    Type: Grant
    Filed: September 12, 2022
    Date of Patent: March 19, 2024
    Assignee: Black & Decker, Inc.
    Inventors: Mike Schmittdiel, Patel Sandip, Dylan Parker, Michael Justis, Dustin L. Demarr, Kathleen Miller
  • Patent number: 11932349
    Abstract: A power unit for a pedal vehicle includes a pedal shaft, an output shaft arranged to transfer torque to a vehicle wheel, a main epicyclic gear set arranged to control transmission ratio between the pedal shaft and the output shaft, an assist motor connected to an assist gear of the main epicyclic gear set, and a control motor connected to a control gear of the main epicyclic gear set. The control motor and the control gear form a control assembly of the power unit. The power unit includes a one-way clutch provided to the control assembly of the power unit and arranged to transmit rotation in only a first rotation direction.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: March 19, 2024
    Inventor: Iiro Peltola
  • Patent number: 11920642
    Abstract: A roller freewheel unit for a vehicle includes an outer sleeve element, an inner ring element and a cage element for accommodating spring/roller elements. The inner ring element has at least one radially protruding sliding shoe element, which can be inserted into a corresponding receptacle of the cage element in the axial direction in order to interconnect the inner ring element and the cage element. The inner ring element may have multiple sliding shoe elements arranged on the circumference of the inner ring element, and the cage element may have correspondingly arranged receptacles. The outer sleeve element may be slid onto outer surfaces of the sliding shoe elements in such a manner that the outer sleeve element is centered and supported by the sliding shoe elements.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: March 5, 2024
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Alexander Reimchen
  • Patent number: 11920645
    Abstract: A method controls a hydraulic system for an actuation device and a cooling and/or lubricating device of a motor vehicle. The hydraulic system has a pump, multiple first actuation valves which are each arranged between a system rail connected to a pump outlet and a hydraulic consumer, as well as an additional valve which is arranged between the pump outlet and a coolant and/or lubricant supply line. The pump is switched between a normal operation and an enhanced operation according to an existing total energy demand of the hydraulic consumer. In normal operation, the pump is permanently driven and the additional valve is opened and closed to control pressure in the system rail. In enhanced operation, the pump is permanently driven, the additional valve is permanently closed and each of the actuation valves is operated according to an individual energy demand of the respective hydraulic consumer.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: March 5, 2024
    Assignee: Schaeffler Technologies AG &Co. KG
    Inventor: Yunfan Wei
  • Patent number: 11920678
    Abstract: A parking pawl assembly having a housing, a parking pawl having a pin bore, a support sleeve fitted in the pin bore, and a pivot pin inserted through the support sleeve. The pivot pin is attached to the housing, thus pivotally attaching the parking pawl to the housing. The parking pawl includes a first end and a second end spaced from the first end. The first end defines the pin bore having an interior bore surface. The support sleeve includes an exterior surface fitted to the interior bore surface of the parking pawl. The exterior surface of the support sleeve may include outer diameter rolled threads or other locking features. The interior bore surface of the parking pawl may include inner diameter rolled threads operable to receive the outer diameter rolled threads of the support sleeve.
    Type: Grant
    Filed: February 13, 2023
    Date of Patent: March 5, 2024
    Inventors: Lokesh Choudhary, Qigui Wang, Wenying Yang, Marcel Taran, Gregory Melekian, Alexey Rubin