Meshing Assisters Patents (Class 74/339)
  • Patent number: 11085494
    Abstract: A dog clutch of a vehicle power transmission device includes a sleeve, the dog clutch connecting/disconnecting a first rotating shaft to/from a first gear by moving the sleeve between a neutral position at which inner circumferential teeth formed on an inner circumferential side of the sleeve are not meshed with outer circumferential teeth on a side surface side of the first gear and an engagement position at which the inner circumferential teeth are meshed with the outer circumferential teeth, the inner circumferential teeth and the outer circumferential teeth having inclined surfaces tooth thicknesses of which become larger as the inner circumferential teeth and the outer circumferential teeth approach each other, and when the sleeve is moved to an engagement position by a shift fork, the sleeve being held in contact with a side surface of the first gear.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: August 10, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Toshio Suzuki, Takaaki Ito, Yoshisuke Kametani, Shinya Kuwabara
  • Patent number: 10933858
    Abstract: In a vehicle drive apparatus, a drive gear which engages with a gear provided on the counter shaft is provided on the input shaft relatively rotatably to the input shaft, and the vehicle drive apparatus comprises a switching mechanism including an actuator and a connection/disconnection sleeve which is driven by the actuator in a direction of the first rotation axis and which selectively switches between a first state in which the drive gear is connected to the input shaft and disconnected from a non-rotating member and a second state in which the drive gear is disconnected from the input shaft and connected to the non-rotating member.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: March 2, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yoshihiro Ikushima
  • Patent number: 10913344
    Abstract: A drivetrain for a powertrain system is arranged to transfer mechanical power between an internal combustion engine, an electric machine and a driveline. The drivetrain includes a gearbox including an input member disposed on a first end, an output member disposed on a second end and an auxiliary geartrain including a first mechanical drive mechanism, a second mechanical drive mechanism, and an auxiliary driveshaft. The auxiliary driveshaft rotatably couples the first mechanical drive mechanism and the second mechanical drive mechanism. The electric machine includes a stator attached to the second end of the gearbox and annular to the output member of the gearbox. The second mechanical drive mechanism is rotatably coupled to the rotor of the electric machine. The first mechanical drive mechanism is rotatably coupled to the input member of the gearbox. The internal combustion engine is also coupled to the input member of the gearbox.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: February 9, 2021
    Assignee: GM Global Technology Operations LLC
    Inventors: Farzad Samie, Derek F. Lahr, Joel R. Briggs
  • Patent number: 10859139
    Abstract: A vehicle transmission has a plurality of gear positions that are to be selectively established, and includes: an input shaft; a first shaft; a second shaft; an output shaft; at least one first drive gear disposed on the first shaft; at least one second drive gear disposed on the second shaft; at least one driven gear disposed on the output shaft; a dog clutch connecting and disconnecting between the input shaft and each of the first and second shafts; and a synchronous meshing apparatus. The synchronous meshing apparatus connects and disconnects between each of the first and second shafts and the output shaft, and, when connecting between each of the first and second shafts and the output shaft, establishes a power transmission path from each of the first and second shafts to the output shaft via a selected one of the at least one first or second drive gear.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: December 8, 2020
    Assignees: Toyota Jidosha Kabushiki Kaisha, Toyota Motorsport GmbH
    Inventors: Tomohiro Yoshimura, Shinichi Takeuchi, Akihiko Ichikawa, Jun Yabuta, Klemens Pollmeier, Lars Van Leeuwen, Andree Miller, Patrizio Agostinelli
  • Patent number: 10760651
    Abstract: Described is a device for synchronization of a reverse gear for a vehicle gearbox including: a support shaft fixed in rotation; an idle gear wheel for engagement with a first reverse gear wheel on a gearbox primary shaft and a second reverse gear wheel on a gearbox secondary shaft, said idle gear wheel mounted rotatable and axially slidable on said support shaft and having a hub including a first friction surface; and a synchronizer ring mounted mobile on said support shaft along an axial travel and countered axially by an elastic element along said axial travel, said synchronizer ring having a second friction surface for engagement with said first friction surface. Axial movement of the idle gear wheel towards an engagement position of the reverse gear causes drawing of the synchronizer ring implementing, prior to reverse gear engagement, braking of rotary movement of the idle gear wheel.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: September 1, 2020
    Assignee: FCA Italy S.p.A.
    Inventors: Alessandro Di Martino, Marco Consani
  • Patent number: 10677318
    Abstract: The invention relates to a manoeuvrable trailing dredging vessel comprising; a vessel propulsion member coupled with a propulsion shaft provided with a single gear for driving the propulsion member, a drive system having a central drive shaft coupled with the vessel propulsion member for providing power to the vessel propulsion member, a transmission device having at least a trailing transmission shaft provided with a trailing pinion and a sailing transmission shaft provided with a sailing pinion, wherein the central drive shaft is coupled with the single gear of the propulsion shaft through one of the trailing transmission shaft and the sailing transmission shaft.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: June 9, 2020
    Assignee: IHC Holland IE B.V.
    Inventors: Cornelis Pieter Raimond, Johannes Martijn Vreugdenhil, Leendert Johannes Adriaan den Boer, Arie de Jager
  • Patent number: 10428902
    Abstract: A synchronizer-mechanism-equipped transmission capable of moving tips of sleeve teeth and ring teeth away from butting each other by moving a synchronizer sleeve with biasing means even if the tips of the sleeve teeth and ring teeth are in contact when actuator driving stops. When sleeve teeth of a synchronizer sleeve that moves during gear shifting are located at a first synchronization position where the sleeve teeth begin to come into contact with ring teeth, a pressing member of a detent mechanism is in contact with a pre-gear-shifting detent recessed portion of a star cam.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: October 1, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yoshiaki Tsukada, Yoshihisa Kanno, Kazuhiko Nakamura, Hiroyuki Kojima, Takashi Ozeki, Hiroshi Takamoto
  • Patent number: 10400830
    Abstract: A synchronizer of a transmission may include a lower key disposed slidable in a radial direction of a hub; an upper key disposed at an external side of the lower key in the radial direction to be slidable in an axial direction of the hub; a sleeve disposed at an external side of the hub to slide the upper key in the axial direction while being slid in the axial direction thereof, pressing the upper key toward a synchronizer ring; a key spring disposed between the lower key and the hub to press the lower key and the upper key toward an internal surface of the sleeve; and a displacement converting device converting relative displacement generated in a circumferential direction of the hub between the upper key and the lower key into relative displacement of the upper key in axial direction toward the synchronizer ring with respect to the lower key.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: September 3, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Jae Young Choi, Jong Yun Park
  • Patent number: 10400892
    Abstract: A method for controlling a multi-clutch transmission of a vehicle includes activating the central synchronizer to the first active state, such that the speed of a first member of a tooth clutch, attempting to engage the tooth clutch to be engaged, and if the tooth clutch to be engaged is determined not to be fully engaged a predetermined period of time after an initiation of an engagement, the following steps are performed: activating the central synchronizer to the second active state such that the speeds of the two members of the tooth clutch to be engaged are slightly unsynchronized, and engaging the tooth clutch to be engaged.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: September 3, 2019
    Assignee: Volvo Truck Corporation
    Inventor: Fredrik Karpenman
  • Patent number: 10344808
    Abstract: A synchronizing device, for a vehicle gearbox, with a synchronizer body which can be mounted rotationally fixedly on an axial shaft, and a shift sleeve which is connected rotationally fixedly to the synchronizer body and can be moved axially along an outer periphery of the synchronizer body and which, to perform a synchronizing process, can be brought from a neutral position into rotationally fixed engagement in a first shift phase with an axially displaceable synchronizer ring and in a second shift phase with a clutch body adjacent to the synchronizer ring. During the first shift phase, the synchronizer ring can be moved in the direction of the adjacent clutch body by the shift sleeve using pressure pads arranged axially displaceably in the synchronizer body, and hence can be brought into frictional engagement with the adjacent clutch body for the purpose of pre-synchronization.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: July 9, 2019
    Assignee: DEERE & COMPANY
    Inventor: Frank Buhrke
  • Patent number: 10337611
    Abstract: A variable-speed drive device for a power unit to be used in a vehicle equipped with a stopper pin passed through an opening in a master arm for regulating the amount of rotary movement of the master arm. Shock-absorbing device is provided on the master arm or the stopper pin At least a part of the shock-absorbing device is formed to project into the path along which the stopper pin moves relative to the opening of the master arm, from a stopper pin outer surface or from edge portions of a defining edge of the opening in the master arm onto extension of the stopper pin path. As a result, even if the master arm and the stopper pin contact one another at high speed, it is possible to suppress the sound of contact and suppress an increase in the weight of a stopper pin fixing part.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: July 2, 2019
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yasushi Fujimoto, Hiroyuki Makita, Masashi Koyanagi, Yoshinobu Shiomi, Jun Adachi, Junya Ono
  • Patent number: 10047840
    Abstract: A fully power-shiftable double clutch transmission DCT of a drive train for a motor vehicle, in particular for a commercial vehicle having has a drive shaft on the drive side, an output shaft on the output side, and a double clutch which comprises at least two clutches with a main transmission assembly comprising at least two component transmissions. The clutches are connected in each case to an input shaft of a component transmission, the component transmissions, furthermore, preferably spur gears in four input gear planes and two output gear planes and a rear-mounted group. The double clutch transmission, furthermore, comprising a multiplicity of shifting elements, and the double clutch transmission and being of fully power-shiftable configuration with at least 12 gears by way of a suitable arrangement and configuration of the spur gear stages, consisting of movable gear and fixed gear, and the shifting elements.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: August 14, 2018
    Assignee: ENGINEERING CENTER STEYR GMBH & CO KG
    Inventors: Thomas Gumpoldsberger, Christian Langsenlehner, Markus Panhuber
  • Patent number: 10047838
    Abstract: A speed changer includes an inner ring, an outer ring, a plurality of first tapered rollers provided in an annular space between inner ring and outer ring on one side in an axial direction, annular first cage that holds the first tapered rollers, a plurality of second tapered rollers provided in the annular space on the other side in the axial direction, and an annular second cage that holds the second tapered rollers. The first cage is a fixed member that is not allowed to rotate around a center line of the annular space. The outer ring is an input member to which a rotation torque is input. The second cage is an output member that outputs rotation resulting from reduction in a speed of the input. A first rotating portion including the first tapered rollers is different in specifications from a second rotating portion including the second tapered rollers.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: August 14, 2018
    Assignee: JTEKT CORPORATION
    Inventor: Akiyuki Suzuki
  • Patent number: 9926934
    Abstract: An arrangement for liquefying natural gas is provided. The arrangement includes a gas turbine unit that includes a gas turbine compressor, a steam turbine unit, a first compressor unit, a shiftable clutch, a heated steam generator for supplying steam to the steam turbine unit, and a second compressor unit. The steam turbine unit and the first compressor unit have a common, rigidly connected first shaft assembly, while the gas turbine unit and the second compressor unit have a common, rigidly connected second shaft assembly. In order to increase economic efficiency, the first shaft assembly and the second shaft assembly are operable to be connected to and disconnected from each other using the clutch. A suitable method for starting said arrangement is also provided.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: March 27, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Hans-Gerd Kölscheid, Klaus Peters
  • Patent number: 9579966
    Abstract: A hybrid powertrain for a motor vehicle has an internal combustion engine and an electric machine that is connected to power electronics and to an electric energy storage device. The internal combustion engine is coupled to an internal combustion engine driveshaft and the rotor of the electric machine is coupled to an electric machine driveshaft that is connected to a planetary gear set with a sun gear, a planet carrier, and a ring gear, one element of which functions as an input element and another as an output element. The rotor of the electric machine can be selectively connected either to the input element or to the output element of the planetary gear set by way of a shiftable clutch).
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: February 28, 2017
    Assignee: Volkswagen Aktiengesellschaft
    Inventors: Georg-Friedrich Luehrs, Dirk Zeise
  • Patent number: 9550417
    Abstract: A saddle-riding type vehicle wherein an electric power transmission apparatus is rendered compact and a clearance is kept between a front wheel and a shift motor in a structure wherein a change mechanism and the shift motor are disposed in a forward direction of a power unit. A change mechanism for selectively establishing a gear stage of a transmission and a shift motor for supplying rotational power to the change mechanism are disposed in a forward direction of a power unit. A speed reducer gear mechanism for reducing the speed of the rotational power from the shift motor is disposed in a forward direction of a transmission compartment. The shift motor is disposed such that a main motor body thereof is positioned rearwardly of the speed reducer gear mechanism.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: January 24, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yasushi Fujimoto, Kinya Mizuno, Hiroyuki Sugiura
  • Patent number: 9541180
    Abstract: A hybrid drive for a motor vehicle comprising a first transmission input shaft for connecting to a first internal combustion engine, a second transmission input shaft, which is coaxial to the first transmission input shaft and connects to a first electric motor, a layshaft, a first gear shifting device connecting the first transmission input shaft and the second transmission input shaft in a first shifting setting and engaging a gear in a second shifting setting, and a transmission output shaft.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: January 10, 2017
    Assignee: ZF Friedrichshafen AG
    Inventor: Johannes Kaltenbach
  • Patent number: 9528571
    Abstract: If a sleeve of a double cone-type synchronizer is not smoothly engaged with a dog gear because of getting caught by the dog gear, the dog gear, as pressed by the sleeve, may lean with a spline-connecting part of the dog gear to a transmission gear as a fulcrum, so that an inner ring of a blocking ring may be damaged by being squeezed between the dog gear and a hub. However, the transmission gear includes: a tooth surface portion having tooth surfaces formed on one axial end side of the transmission gear; and a contact portion formed on the opposite axial end side, and abutting against the dog gear. The contact portion extends radially outward of a through-hole of the dog gear, thereby preventing the dog gear, as pressed by the sleeve, from leaning toward the transmission gear so as to prevent damage of the inner ring.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: December 27, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Nobuhiro Kumagai, Shunji Kamo, Kazuki Sakurai
  • Patent number: 9464714
    Abstract: A gear shifting device includes a shifting element that is axially shiftable into a shift position through the interaction of a shift pin with an associated groove-like shift gate that changes course in an axial direction. The shift element features, on an inner or outer diameter the shift gate, while the respective shift pin is arranged in a radially displaceable manner opposite the shift gate on a transmission component adjacent to the shift element.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: October 11, 2016
    Assignee: ZF Friedrichshafen AG
    Inventor: Bastian Volpert
  • Patent number: 9347549
    Abstract: A shifting assembly for a vehicular transmission includes a shift rail having a yoke coupled thereto. A lever may be provided having portions forming an L-shaped slot. The yoke may engage the lever through the slot. The shift rail may be configured to shift the transmission into a forward gear ratio and a reverse gear ratio. The shift rail may be configured to translate along a primary axis in a first direction and in an opposite second direction. A shift fork may be coupled to the shift rail, which is configured to cause the transmission to shift into a forward gear ratio when the shift rail is translated in the first direction to a forward gear engagement position. The yoke may be configured to cause the transmission to shift into a reverse gear ratio when the shift rail is translated in the second direction to a reverse gear engagement position.
    Type: Grant
    Filed: March 20, 2013
    Date of Patent: May 24, 2016
    Assignee: GM Global Technology Operations, LLC
    Inventor: Ganesha Neelappa
  • Patent number: 9278687
    Abstract: A control device of a hybrid vehicle including an engine; an automatic transmission placed on a power transmission path between the engine and wheels, having a first friction engagement element engaged in a forward range and a second engagement element engaged in a reverse range based on a hydraulic pressure generated while the engine is stopped; and a rotary electric machine capable of driving the wheels without using the power transmission path. The rotary electric machine is driven when a shift range is the forward range or the reverse range while the internal combustion engine is stopped, and the driving of the rotary electric machine is restrained for a set time after the shift range is changed from the forward range to the reverse range or vice versa while the engine is stopped.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: March 8, 2016
    Assignee: AISIN AW CO., LTD.
    Inventors: Kenta Kimata, Masahiro Asai, Kazuhiko Motodohi, Shinichiro Iga
  • Patent number: 9254737
    Abstract: A hybrid drive of a motor vehicle includes a combustion engine, an electric machine, a gear box, and a superimposed transmission. The gearbox includes an input shaft, and first and second output shafts, and the input shaft is connected to the first and second output shafts via switchable spur gear stages. The superimposed transmission is connected non-rotatably to a hollow shaft arranged coaxially with the second output shaft. The hollow shaft is connected non-rotatably to an idler of an axially adjacent switchable spur gear stage via a first coupling-switching element, and the hollow shaft is fixed at a housing via an interlock switching device. A bridging contact member connects the hollow shaft to the superimposed transmission, and the superimposed transmission is also permanently connected to a rotor of the electric machine.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: February 9, 2016
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Johannes Kaltenbach, Uwe Griesmeier, Daniel Ortner
  • Patent number: 9221337
    Abstract: A gearbox has a first shaft with at least two journalled gearwheels, a first gearwheel to drive the first shaft in a first direction and a second gearwheel to drive the first shaft in a second direction. Devices selectively lock the gearwheels situated on the first shaft for joint rotation. A second has at least two fixed gearwheels, one second gearwheel cooperates with the first gearwheel for operation in the first direction. A third shaft with a third gearwheel which selectively in or out of engagement with the first and second gearwheels for operation in the first direction. The first gearwheel intended for operation in the first direction is also in engagement with one or more further power-transmitting device used for connecting at least one form of extra equipment, e.g. a retarder or a power take-off.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: December 29, 2015
    Assignee: SCANIA CV AB
    Inventor: Dieter Slapak
  • Patent number: 9174522
    Abstract: A hybrid powertrain includes a hybrid transmission that has an input member operatively connectable to an engine crankshaft, at least one motor/generator, a gearing arrangement, and an output member operatively connectable to both the input member and said at least one motor/generator. An input brake has a first and a second brake shoe, a selectively energizable solenoid, and a mechanical biasing mechanism. The solenoid is operatively connected to the brake shoes via the mechanical biasing mechanism so that both brake shoes are operatively connected with the input member when the solenoid is energized. When the solenoid is deenergized, the first brake shoe remains operatively connected with and resists rotation of the input member when clockwise torque is applied to the input member and the second brake shoe remains operatively connected with and resists rotation of the input member when counterclockwise torque is applied to the input member.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: November 3, 2015
    Assignee: GM Global Technology Operations LLC
    Inventor: Joel M. Maguire
  • Patent number: 9057436
    Abstract: The present invention is a shift device for switching a dog clutch mechanism in a transmission, comprising: a shift shaft capable of moving in an axial direction; a shift member capable of moving in the axial direction within a predetermined waiting stroke range; an elastic member holder for a waiting mechanism; and an elastic member provided in outside of the shift shaft in a radial direction so as to be compressed and expanded between the elastic member holder and the shift member, wherein the elastic member biases the shift member toward one side in the axial direction.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: June 16, 2015
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Seiji Itoo, Ayumi Hamada, Taisuke Morita
  • Publication number: 20150143936
    Abstract: An automated manual transmission for a vehicle may include an input shaft (INPUT) configured to allow a rotational force to be transmitted from a power source, an output shaft configured to be disposed in parallel with the input shaft so as to draw out power, and a plurality of shifting gear pairs including driving gears and driven gears installed on the input shaft and the output shaft respectively so as to be circumscribed in pairs and provide different shifting stages for respective pairs, wherein at least two of the shifting gear pairs are respectively configured so that one of the driving gear and the driven gear is connected to the input shaft or the output shaft so as to control power by planetary gearsets, and the other is connected to the input shaft or the output shaft so as to control power by a synchronizer.
    Type: Application
    Filed: August 18, 2014
    Publication date: May 28, 2015
    Applicant: Hyundai Motor Company
    Inventors: Soon Ki EO, Chon Ok KIM
  • Patent number: 9038493
    Abstract: An automatic shift device for an automated transmission for a vehicle includes a rotation shaft, a clutch ring, a clutch hub, a sleeve, a dog clutch portion, a shaft moving apparatus, and a control portion. The control portion includes a push force reduction control portion performing a push force reduction control reducing a push force of the sleeve that the shaft moving apparatus applies on the clutch rear teeth in response to a back and forth movement of the sleeve after the sleeve reaches an end surface of the clutch rear tooth. The control portion includes a retry control portion performing a retry control that re-applies the push force of the sleeve in response to a predetermined retry condition after the push force reduction control is performed.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: May 26, 2015
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yasuhisa Iwasaki, Kyosuke Mori, Yusuke Yoshida, Keisuke Mishima, Masahiko Komura
  • Patent number: 9033851
    Abstract: A motor drive assembly can prevent a two-way roller clutch of the current speed ratio and a two-way roller clutch of the next speed ratio from engaging simultaneously, and includes a first-speed friction plate formed with engaging protrusions on the first-speed side, and a shift ring formed with engaging recesses. While the shift ring is in a first-speed shift position SP1f, the engaging protrusions are adapted to be engaged in the engaging recesses, thereby preventing rotation of the shift ring relative to the first-speed friction plate. The shift ring is provided with projections on its inner periphery. The drive assembly further includes an annular protrusion formed with cutouts. When the projections are axially and circumferentially displaced from the respective cutouts, the projections are adapted to interfere with the annular protrusion, thereby preventing axial movement of the shift ring between the first-speed shift position SP1f and a second-speed shift position SP2f.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: May 19, 2015
    Assignee: NTN Corporation
    Inventors: Yoshinori Itakura, Guodong Li
  • Publication number: 20150128738
    Abstract: Provided with a hollow piping member attached in a casing and a guide member integrally installed on an outer peripheral surface of the piping member. The guide member is structured by a plurality of surfaces including a first surface on which at least part of hydraulic fluid pumped up by a final gear is received and a second surface connected to one end of the first surface extending along a side of the final gear, and fastened to the casing by a fastener. The guide member receives hydraulic fluid pumped up by the final gear, restraining the fluid from reaching a breather mechanism and neighborhoods thereof.
    Type: Application
    Filed: October 16, 2014
    Publication date: May 14, 2015
    Applicant: HONDA MOTOR CO., LTD
    Inventors: Yuki Ono, Shinji Nagahama
  • Patent number: 9027426
    Abstract: A synchronization device for a transmission includes a sliding sleeve, a blocking synchronizer ring and a change wheel. In a force flow region between the blocking synchronizer ring and the change wheel, ramps for producing a servo force axial with respect to the shaft are provided on at least one component part.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: May 12, 2015
    Assignee: Ford Global Technologies, LLC
    Inventor: Hartmut Roper
  • Patent number: 9021909
    Abstract: A compound transmission shift mechanism is disclosed. The shift mechanism includes a plurality of gears configured on at least one transmission shaft with at least one synchronizer configured to engage at least two of the plurality of gears. The shift mechanism includes a control system configured to engage and position the synchronizer into alignment with the at least two of the plurality of gears. Additionally, the shift mechanism includes at least one damping assembly configured on the control system and operatively connected to the synchronizer.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: May 5, 2015
    Assignee: Eaton Corporation
    Inventor: Josevaldo Roberto Fernandez
  • Patent number: 9016156
    Abstract: A dog clutch control apparatus for an automated transmission includes a rotary shaft, a dog clutch transmission mechanism including a clutch ring, a clutch hub, a sleeve including a spline, an axial driving device, a dog clutch portion provided at the clutch ring, a rotation speed detection sensor, the spline including high teeth and a low tooth, clutch rear teeth and clutch front teeth formed at the dog clutch portion, and a control unit controlling an operation of the axial driving device based on a deceleration gradient of a rotation speed of either one of the sleeve and the clutch ring detected by the rotation speed detection sensor and controlling the axial driving device so that a decreased thrust load is applied to the clutch rear teeth from the sleeve in a case where the deceleration gradient is smaller than a first predetermined value.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: April 28, 2015
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Yasuhisa Iwasaki, Yusuke Yoshida
  • Patent number: 8983744
    Abstract: An automatic shift apparatus includes a rotation shaft, a dog clutch gear shift mechanism, and a control unit. The control unit controls first moving speed to be faster than second moving speed on moving a sleeve in an engaged state engaged with one of a first clutch ring and a second clutch ring to a neutral position defined at a position between the first clutch ring and the second clutch ring where the first moving speed is a speed of moving the sleeve in the engaged state to a target position defined between the neutral position and the mentioned one of the first clutch ring and the second clutch ring the sleeve is engaged with and where the second moving speed is a speed of moving the sleeve from the target position to the neutral position.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: March 17, 2015
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Masahiko Komura, Yuuki Ohta, Kyosuke Mori
  • Patent number: 8960032
    Abstract: A multi-clutch transmission for a motor vehicle is provided where a central synchronizing unit includes an axially movable synchronizing member that is arranged on and rotationally locked with a countershaft. In actuated states of the central synchronizing unit, the synchronizing member is displaced axially into engagement with mating portions of two gearwheels that are rotatably arranged on the countershaft. The synchronizing member includes an internal and an external cortical friction surface that axially overlap each other, and the mating portions on the two of the gearwheels are mating conical surfaces.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: February 24, 2015
    Assignee: Volvo Lastvagnar AB
    Inventors: Anders Hedman, Klas Bergström
  • Publication number: 20150027255
    Abstract: A shift device has thrust pieces to change force in a radial direction to thrust when they swing relative to and contact with a hub. The thrust pieces respectively are fixed with holders each containing a ball and a spring. The springs elastically press the balls outwardly in the radial direction against the groove of the shift sleeve, pressing the radially inner surfaces of the thrust pieces on the guide surfaces of the hub through the holders to be configured in such a way that a clearance between the radially outer surfaces of the thrust pieces and the inner surface of the shift sleeve is ensured and the thrust pieces can swing being guided along the guide surfaces.
    Type: Application
    Filed: July 7, 2014
    Publication date: January 29, 2015
    Inventor: Tatsuya KUME
  • Patent number: 8942901
    Abstract: A hydraulic control system for a dual clutch transmission includes a plurality of solenoids and valves in fluid communication with a plurality of clutch actuators and with a plurality of synchronizer actuators. The clutch actuators are operable to actuate a plurality of torque transmitting devices and the synchronizer actuators are operable to actuate a plurality of synchronizer assemblies. Selective activation of combinations of the solenoids allows for a pressurized fluid to activate at least one of the clutch actuators and synchronizer actuators in order to shift the transmission into a desired gear ratio.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: January 27, 2015
    Assignee: GM Global Technology Operations, LLC
    Inventors: Philip C. Lundberg, Bret M. Olson, Brian W. Whitmarsh, Wayne B. Vogel
  • Publication number: 20150013486
    Abstract: A transmission is structured to include a drive shaft, a counter shaft disposed in parallel with the drive shaft, a gear train bridged between each of a drive shaft input shaft and output shaft and the counter shaft, and a dog clutch mechanism selectively switching a high shift speed and a low shift speed in a transmission chamber. The transmission includes a drive device driving the dog clutch mechanism constituted of a hydraulic drive device driven by a hydraulic cylinder, the hydraulic cylinder being disposed in the transmission chamber.
    Type: Application
    Filed: July 9, 2014
    Publication date: January 15, 2015
    Applicant: SUZUKI MOTOR CORPORATION
    Inventors: Yoshiki KUBO, Keisuke DAIKOKU, Keiji IMANAGA
  • Patent number: 8925410
    Abstract: A synchronizer for a transmission includes a shift rail, a first sleeve, a second sleeve, and a stopper. The shift rail includes a first shift fork and a second shift fork that are provided integrally with each other. The first sleeve is movable in a first direction along an axial direction from a predetermined first standby position to synchronize a first gear with a rotating shaft. The second sleeve is movable in a second direction along the axial direction from a predetermined second standby position to synchronize a second gear with the rotating shaft. A distance between the second sleeve at the predetermined second standby position and the stopper in the axial direction is smaller than a distance between the first sleeve at the predetermined first standby position and the third gear in the axial direction.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: January 6, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hisayuki Asada, Yasuyuki Masaoka, Hiromichi Konishi
  • Patent number: 8915161
    Abstract: A fine motion control rod drive mechanism handling apparatus attaches a fine motion control rod drive mechanism having a control rod drive mechanism body, a spool piece, a motor bracket and a motor unit to a reactor pressure vessel, and detaches it from the reactor pressure vessel. The fine motion control rod drive mechanism handling apparatus is provided with a bolt wrench assembly, a motor unit attachment mounted to the bolt wrench assembly, for meshing a first gear of a first gear coupling on a spool piece side with a second gear of a second gear coupling on a motor unit side, and a rotation mechanism mounted to the bolt wrench assembly, for rotating the motor unit attachment.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: December 23, 2014
    Assignee: Hitachi-GE Nuclear Energy, Ltd.
    Inventors: Hirokazu Akatsuka, Toshihiro Kodama, Takeaki Suzuki
  • Publication number: 20140345403
    Abstract: A synchronization device for a transmission, includes a sliding sleeve a blocking synchronizer ring and a change wheel. In a force flow region between the blocking synchronizer ring and the change wheel, ramps for producing a servo force axial with respect to the shaft are provided on at least one component part.
    Type: Application
    Filed: September 26, 2012
    Publication date: November 27, 2014
    Inventor: Hartmut Roper
  • Patent number: 8892320
    Abstract: The noise caused by the coupling and decoupling of the gear generated when ignition on and off of a dual-clutch mounted vehicle in the P range are switched to each other, and the merchantability of the vehicle can be increased by improving the noise performance of the vehicle by preventing the noise generated by the coupling of the gear as possible from being remarkable in other shift ranges.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: November 18, 2014
    Assignee: Hyundai Motor Company
    Inventor: Young Min Yoon
  • Publication number: 20140331800
    Abstract: A manual transmission for vehicles minimizes rotational inertia and improves rattle as a consequence of preventing unnecessary idling of a first speed gear and a reverse speed gear by maintaining a first input gear to be a free gear state at all shift-speeds except a first forward speed and a reverse speed.
    Type: Application
    Filed: July 28, 2014
    Publication date: November 13, 2014
    Applicant: Hyundai Motor Company
    Inventors: Wan Soo OH, Jae Woong Hwang, Haeng Woo Park
  • Patent number: 8800401
    Abstract: A transmission (12) for a vehicle (10) includes a gear shaft (24) having an external periphery (57) and a hub (54). The hub (54) is rotatably secured and axially moveably connected to the external periphery (57) of the gear shaft (24) and has a plurality of external teeth (62). The transmission (12) also includes a gear (56) connected to the gear shaft (24). An external periphery (66) of the gear defines teeth (67). The transmission further includes a shift collar (44) having a bore (64) through the shift collar (44). The shift collar (44) has internal teeth (65) that engage the teeth (62) of the hub (54). The gear and the shift collar (44) have a first configuration where all of the teeth (65) of the shift collar (44) are spaced from all of the teeth (67) of the gear (56) and a second configuration (70) where at least some teeth (65) of the shift collar (44) engage teeth (67) of the gear (56). The shift collar (44) defines a feature (71) for limiting the axial motion of the shift collar (44).
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: August 12, 2014
    Assignee: Deere & Company
    Inventor: Jeremy J. Wagner
  • Patent number: 8794089
    Abstract: A transmission includes first and second rotating shafts arranged in parallel and multiple gear sets including gears fixed to the first rotating shaft and rotatable gears rotatably supported on the second rotating shaft. Each gear set includes first and second engagement units engaged with first and second engagement-target portions formed on end surfaces of each rotatable gear and transmitting torque in first and second rotational directions; and a shift mechanism axially and independently moving the first and second engagement units. Each one of the first and second engagement units has a slanted portion allowing the engagement unit to withdraw from the rotatable gear when the other one of the engagement units is disengaged and torque transmitted in a corresponding direction is input. Each one of the first and second engagement unit of each gear set moves integrally with the other one of the engagement units of an adjacent gear set.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: August 5, 2014
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventors: Hiroshi Ogawa, Yasuyuki Ukon, Ryota Takayanagi, Masaya Miyazaki
  • Patent number: 8776628
    Abstract: A motorcycle having a transmission which includes a counter shaft to which a rotation of a crankshaft disposed in an engine is transmitted and a drive shaft to which a rotation of the counter shaft is transmitted. A pair of drive gears mounted on the counter shaft so as to be rotated integrally with the counter shaft, and a pair of driven gears mounted on the drive shaft so as to be meshed with the pair of drive gears, respectively, to be rotatable therewith, and a friction ring is interposed between the pair of driven gears.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: July 15, 2014
    Assignee: Suzuki Motor Corporation
    Inventor: Masato Yamazaki
  • Patent number: 8733195
    Abstract: An actuating assembly for actuating synchronizing elements of a centrally synchronized dual-clutch transmission having at least a first part-transmission (6) and a second part-transmission (7) such that at least one synchronizing element is associated with each of the first and the second part-transmission (6, 7). A common actuator (1) is provided for actuating at least the synchronizing elements of the two part-transmissions.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: May 27, 2014
    Assignee: ZF Friedrichshafen AG
    Inventors: Ralf Dreibholz, Eckhardt Luebke, Matthias Reisch, Juergen Wafzig
  • Publication number: 20140130626
    Abstract: A reversing gear (13d) is disposed between a fifth fixed gear (13a) having a smallest outer diameter among respective gears provided in a first main shaft (4) and a second main shaft (5) and a sixth idling gear (13b) having a smallest outer diameter among respective gears provided in a first sub-shaft (6) to always mesh with the respective gears. A first synchronizing sleeve (21) is disposed to overlap a bearing (8a) of a third sub-shaft (8) in the axial direction of the second main shaft (5). A second synchronizing sleeve (22), a third synchronizing sleeve (23), and a fourth synchronizing sleeve (24) are disposed to overlap a bearing (8b) of the third sub-shaft (8) in the axial direction of the second main shaft (5).
    Type: Application
    Filed: May 29, 2012
    Publication date: May 15, 2014
    Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Yuichi Ushiroda, Takuya Yamamura
  • Patent number: 8725372
    Abstract: A method for adjusting the point of engagement of a friction clutch of a step-variable transmission for a motor vehicle, in particular a friction clutch of a dual clutch transmission. The friction clutch is controllably actuated by means of a clutch actuator and at least one synchronizer shifting clutch is controllably actuated by means of a shift actuator for the engagement and disengagement of a gear ratio of the spur-gear transmission. A set-point of the clutch actuator for the point of engagement of the friction clutch is adjusted as a function of a speed gradient value, which ensues from a transitional state with the friction clutch actuated and the shifting clutch actuated, once the shifting clutch is opened. The transitional state is established by setting the clutch actuator and the shift actuator to a respective transitional value substantially at the same time or, at least in sections, in parallel.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: May 13, 2014
    Assignees: GETRAG Getriebe-und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG, Bayerische Motoren Werke Aktiengesellschaft, Conti Temic microelectronic GmbH
    Inventors: Rainer Rinck, Markus Schuerlein, Tobias Soller
  • Patent number: 8718882
    Abstract: A method of controlling a transmission brake that is actuated by inlet and outlet valves. For determining when to transmit a disengagement signal for opening the outlet valve, the current input and output speeds are determined and the respective gradients of these speeds are calculated. Variation of the input speed, during the disengagement of the brake, is determined as a function of the input gradient, the optimum time for reaching the synchronous speed, during brake disengagement, is determined from the input speed variation as a function of the output gradient, and the time interval until transmission of the disengagement signal is determined as a function of the current input and output speeds and their gradients, by a back-calculation from the time when the synchronous speed is reached, taking a disengagement dead time of the brake, between transmitting the disengagement signal and start of disengagement, into account.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: May 6, 2014
    Assignee: ZF Friedrichshafen AG
    Inventor: Marcus Gansohr
  • Publication number: 20140109706
    Abstract: A shift device has lever members arranged between a sleeve, a hub, and synchronizer rings to amplify and transmit pressing force of the sleeve to one of the synchronizer ring. The lever members include first lever members for one of the synchronizer rings, and second lever members for the other of the synchronizers. The first lever members and the second lever members are alternately arranged at the both sides of the hub with a phase shift in a rotational direction.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 24, 2014
    Applicant: KYOWA METAL WORKS CO., LTD.
    Inventor: Kazuyoshi HIRAIWA