Interposed Friction Members Patents (Class 192/53.32)
  • Patent number: 10871206
    Abstract: The present invention relates to a torque transmission device (2) comprising a planetary gear train (22), which has a rotatable component (28), a stationary housing (18), and a clutch device (32) for selective coupling of the component (28) with the stationary housing (18). The clutch device (32) has a friction-locking first clutch (34) and a positive-locking second clutch (36), wherein the component (28) may be coupled to the stationary housing (18) via the first clutch (34) before a coupling by means of the second clutch (36).
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: December 22, 2020
    Assignee: Borg Warner Inc.
    Inventors: Stefan Pastoors, Matthias Gerhard Veit
  • Patent number: 10801557
    Abstract: A transmission gear synchronizer includes a sliding sleeve a hub and a blocker ring. The sliding sleeve has an inner surface defining a sleeve spline. The hub is received within the sliding sleeve. The hub has a plurality of gear teeth extending radially outward from a root diameter of the hub. The plurality of gear teeth are configured to engage the sleeve spine. A notch is disposed proximate the root diameter of the hub and spaced apart from the plurality of gear teeth. The blocker ring comprises a thermoplastic material. The blocker ring comprises a thermoplastic material. The blocker ring has a plurality of molded clutch teeth extending radially outward from a root diameter of the blocker ring. The plurality of molded clutch teeth are configured to engage the sleeve spline in response to the sliding sleeve engaging the blocker ring during a transmission shift event.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: October 13, 2020
    Assignee: Eaton Corporation
    Inventors: Josevaldo Roberto Fernandez, Thiago Fontoura de Andrade, Carlos Henrique Coronado Sena
  • Patent number: 10274022
    Abstract: A clutch structure of a transmission includes: a hub secured to a rotating shaft, a sleeve mounted on the hub so as to slide linearly, a clutch gear to rotate relative to the rotating shaft and integrally formed with a clutch cone, a first friction ring provided between the clutch gear and the hub to be pressed toward the clutch gear, a second friction ring having an inner surface to contact an outer surface of the clutch cone, and a middle cone having an inner surface to contact an outer surface of the second friction ring and an outer surface to contact an inner surface of the first friction ring. Each of the second friction ring and the middle cone is provided with a friction member on at least one of an inner diameter portion and an outer diameter portion each of the second friction ring and the middle cone.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: April 30, 2019
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Jong Yun Park, Kyung Song
  • Patent number: 10253824
    Abstract: Friction ring for a synchronization unit of a gear changing transmission. The friction ring, when in an uninstalled state, is circumferentially pre-loaded and includes an annular front side, an annular rear side, a conical inner friction surface, a conical outer installation surface, and a first separation surface facing and in contact with a second separation surface and defining a circumferential separation area in the friction ring. The friction ring is prevented from contracting radially and circumferentially by said contact and is capable of expanding radially and circumferentially while being circumferentially pre-loaded.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: April 9, 2019
    Assignee: OERLIKON FRICTION SYSTEMS (GERMANY) GMBH
    Inventors: Ulf Christoffer, Dietmar Koester, Marcus Spreckels
  • Patent number: 9878768
    Abstract: A marine transmission includes a synchronizer on a counter rotating shaft to shift into a high speed gear. The synchronizer includes friction surfaces on both sides of the gear body for the high speed gear. The high speed gear mesh is helical and generates axial force that enhances the torque carrying capacity of synchronizing friction surfaces, thereby enabling the shifting into the high speed gear without torque interrupt.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: January 30, 2018
    Assignee: Brunswick Corporation
    Inventors: Joseph S. VanSelous, Eric Sharkness, Jiri Jager
  • Patent number: 9863484
    Abstract: The invention relates to a friction ring (1) for a synchronizing unit (2) of a variable ratio gear transmission. The friction ring (1) comprises a conical friction body having an inner friction surface and an outer installation surface which each bound the friction ring body in a radial peripheral direction extending perpendicular to an axial friction ring axis (4). The friction ring body comprises a projection (9) for restraining a movement of the friction ring (1) relative to a synchronizer ring (7) substantially along the friction axis in operation in the synchronizing unit (2).
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: January 9, 2018
    Assignee: OERLIKON FRICTION SYSTEMS (GERMANY) GMBH
    Inventors: Gary I. Skipper, Marcus Spreckels, Ulf Christoffer
  • Patent number: 9829051
    Abstract: A gearbox (BV) comprises a secondary shaft (AS) provided with a synchromesh (SB) comprising a flange (FL) comprising a sub-hub (SM) fixedly secured to the secondary shaft (AS) and provided with external splines (CE3), a hub (MO) comprising internal splines (CI1) collaborating with the external splines (CE3) of the sub-hub (SM) to allow translational movement with respect to the latter (SM), and a sleeve (MA) that can undergo a translational movement with respect to the hub (MO) so that the internal splines (CI2) thereof are closely coupled to dogs (CR) of an idling pinion (PF1). This translational movement of the hub (MO) with respect to the sub-hub (SM) guarantees close coupling of the internal splines (CI2) of the sleeve (MA) with the dogs (CR) with a minimal margin for translation, irrespective of dimensional variations in the manufacture of the sleeve (MA) and idling pinion (PF1).
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: November 28, 2017
    Assignee: TECHNOBOOST
    Inventors: Michael Wascheul, Aurelien Renault, Marc Giannoni
  • Patent number: 9719565
    Abstract: A shift device includes an output shaft, a hub, a speed gear, a sleeve, a synchronizer ring, lever members, and a spring. The lever members have torque receiving portions contactable with projections of the synchronizer ring to receive friction torque from the projections. Contact positions of the torque receiving portions and the projections in a synchronization operation are set at a hub side of the lever members and an axial-directional distance between points of support and the contact positions is less than a thickness of the lever member.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: August 1, 2017
    Assignee: KYOWA METAL WORKS CO., LTD.
    Inventor: Kazuyoshi Hiraiwa
  • Patent number: 9156351
    Abstract: A power transfer device for a four-wheel drive vehicle includes a first shaft for transferring torque to a first driveline, a second shaft for transferring torque to a second driveline, and a transfer mechanism driving the second shaft. A mode clutch assembly drivingly connects the first shaft to the transfer mechanism and includes a clutch gear driven by the transfer mechanism and a mode sleeve. A sprocket hub associated with the transfer mechanism has external drive teeth meshed with internal drive teeth on the clutch gear with a predetermined amount of backlash therebetween. A ball cam mechanism centers the backlash and permits relative rotation between the transfer mechanism and the mode sleeve to circumvent a blocked mode shift.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: October 13, 2015
    Assignee: Magna Powertrain, Inc.
    Inventors: Wolfram E. Hasewend, Thomas E. Braford, Matthew Girlando
  • Patent number: 8950561
    Abstract: A clutch assembly is provided. The clutch assembly includes a basket member, an input member and an actuator that is disposed within the basket member. A hub member, having a hub spline and an inclined portion is disposed adjacent to the actuator. A cam member, having a cam spline and cam lobes is rotatably disposed on the input member. A shaft member, having a shaft spline and plurality of slots is rotatably disposed on the input member. The hub spline is engaged with the cam spline in a disengaged position of the actuator. The clutch assembly further includes a plurality of balls received within the corresponding slots of the shaft member. While moving towards an engaged position of the actuator, the cam spline aligns with the shaft spline thereby the hub spline engages with the shaft spline in the engaged position of the actuator.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: February 10, 2015
    Assignee: Caterpillar Inc.
    Inventors: Brian E. Lister, Gaurav Vasudeva
  • Patent number: 8662275
    Abstract: A synchronizing ring for a synchronizing device of a motor vehicle gearing with a ring body. The ring body has a plurality of recesses, and frictional elements are arranged in the recesses.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: March 4, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Thomas Karais, Josef Schwuger, Marcus Spoerl
  • Patent number: 8528435
    Abstract: A power assist element for arrangement in a synchronizer hub of a transmission synchronization device includes a base body, which has a height, a longitudinal extension and a lateral extension, and which in the direction of the longitudinal extension comprises includes two opposite, distal end sections. In at least one end section a functional surface is formed, which in the installed state cooperates with the synchronizer hub. On the base body between the two distal end sections a central elevation is formed for engagement in a sliding sleeve groove on a bottom of a sliding sleeve. The central elevation includes at least one additional functional surface which can be brought into active connection with the sliding sleeve. The functional surface in the distal end section(s) is at an acute angle to the greatest longitudinal extension of the base body and oriented at an angle to the longitudinal extension.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: September 10, 2013
    Assignees: Miba Sinter Austria GmbH, Hofer Forschungs- und Entwicklungs GmbH
    Inventors: Thomas Hackl, Johann Paul Hofer, Markus Hofer, Alexander Mueller, Helmut Pamminger
  • Patent number: 8448769
    Abstract: Drive engagement apparatus for engaging a driven gear with a shaft connected to a load by engaging an axially movable sleeve with a dog. One of the sleeve or dog is drivably connected to the gear and the other to the shaft. Compressed air acts to effect axial movement of the sleeve. Axial movement is delayed by a friction drive, which prevents engagement between the sleeve and dog until their rotational speeds equalise. The friction drive comprises a plurality of friction plates pushed together by the compressed air. The dog comprises an engagement unit that engages the sleeve and a base unit that is axially movable to activate and deactivate the friction drive. The base unit and engagement unit are rotatable relative to one another within a predetermined angle to adjust for misalignment between the sleeve and dog during engagement.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: May 28, 2013
    Inventor: Reginald Knowles
  • Patent number: 8342307
    Abstract: A synchronizing ring includes a conical ring body with an inner friction surface and an outer installation surface, which bound the ring body and extend conically. The ring body is bounded in the axial direction at a largest cone diameter by a gear wheel surface with a gear wheel extending substantially perpendicular to the synchronizing ring axis and is bounded at a smallest cone diameter by a surface. A recess is provided at the surface of the synchronizing ring for fixing the inner ring with a security against rotation of the inner ring. A raised or displaced portion is provided at the surface of the synchronizing ring and an undercut is provided at the inner ring, so that the displaced portion can engage in the undercut in such a way that an overall height of the synchronizing ring set is not enlarged by the displaced portion.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: January 1, 2013
    Assignee: Sulzer EUROFLAMM Germany GmbH
    Inventors: Ulf Christoffer, Marcus Spreckels
  • Publication number: 20110174586
    Abstract: A synchronizer assembly is provided for a gearbox of a power train of a vehicle. The synchronizer assembly includes, but is not limited to a synchronizer hub, one or more axially movable synchronizer rings, an axially movable synchronizer sleeve, and a synchronizer key. The synchronizer hub is intended for engaging with a shaft of the gearbox. The axially movable synchronizer rings include, but are not limited to synchronizer frictional surfaces for frictional engagement with gearwheel frictional surfaces of gearwheels of the gearbox. The axially movable synchronizer sleeve is intended for engaging with the synchronizer hub and with the synchronizer rings. The synchronizer key is arranged between the synchronizer hub and the synchronizer sleeve. The synchronizer key comprises one or more release members for engaging the synchronizer rings in an axial direction such that the synchronizer rings are movable away from the gearwheel frictional surfaces of the gearwheels of the gearbox.
    Type: Application
    Filed: January 19, 2011
    Publication date: July 21, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Mikael WESTERBERG
  • Publication number: 20100252386
    Abstract: A shift device includes a shaft, a hub, a sleeve, a pair of speed gears sandwiching the hub, a first synchronizer ring, a second synchronizer ring, a plurality of thrust pieces disposed in cut-off portions of the hub and a pair of springs pushing the thrust pieces outwardly in a radial direction toward the sleeve. The thrust pieces moves together with the sleeve when the sleeve is moved toward the one of the speed gears, while the thrust pieces moves inwardly in the radial direction against the first and second springs when the sleeve is moved halfway toward the other of the speed gears so that the thrust pieces move in an axial direction and swing to provide different self-servo functions according to the above shift directions when they contact with the hub.
    Type: Application
    Filed: March 29, 2010
    Publication date: October 7, 2010
    Inventor: Kazuyoshi HIRAIWA
  • Patent number: 7717247
    Abstract: A synchronization device is described for a change speed gear, comprising at least one cone clutch which comprises a double cone ring (10) which is freely rotatable relative to a hub (1) between an inner friction ring (8) and an outer synchronizing ring (9) which is axially displaceable relative to the friction ring (8) and which comprises a ring body (15) with a stop gearing (14) on the outer circumference and a friction surface (17) on the inner circumference as well as radially inwardly facing drivers (13) for the friction ring (8). In order to provide advantageous constructional conditions it is proposed that the drivers (13) are provided on a driver ring (16) made of at least one sheet-metal pre-cut part which is joined to the ring body (15) consisting of a sintered body.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: May 18, 2010
    Assignee: Miba Sinter Austria GmbH
    Inventors: Friedrich Stöckl, Karl Ammer, Günter Nelböck
  • Publication number: 20100012452
    Abstract: A synchronizing ring for a synchronizing device of a motor vehicle gearing, with a ring body. The ring body has a plurality of recesses, and frictional elements are arranged in the recesses.
    Type: Application
    Filed: December 6, 2007
    Publication date: January 21, 2010
    Applicant: SCHAEFFLER KG
    Inventors: Thomas Karais, Josef Schwuger, Marcus Spoerl
  • Patent number: 7559415
    Abstract: A synchronizer for first and second drives is provided which includes a first drive having a first fluid passage, a hub affixed with the first drive having a second fluid passage connected with the first fluid passage, a piston mounted on the hub forming a control volume between the piston and the hub, the control volume intersecting the second passage, the piston being responsive to fluid pressure within the control volume, a friction member rotated with the hub being moved by the piston and a friction surface rotating with the second drive member for engagement with the friction member to synchronize the first and second drives together, first teeth rotating with the hub being moved by the piston, and second teeth rotating with said second drive member.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: July 14, 2009
    Assignee: BorgWarner Inc.
    Inventor: Thomas E. Braford, Jr.
  • Patent number: 7497311
    Abstract: A drive arrangement (1) is disclosed where a driving gear (13) is engageable with a shaft (14) by engaging an axially movable sleeve (19) with a dog (23). One of the sleeve (19) or dog (23) is drivably connected to the gear (13) and the other to the shaft (14). A piston (21) is engaged via fork (22) with the sleeve (19); axial movement of the piston (21) causes axial movement of the sleeve (19). A delay device is included which prevent engagement between the sleeve (19) and dog (23) until the rotational speeds of those elements is equalized. The delay device include a friction plates (24) which create a friction drive between the driving force (e.g. gear (13)) and the element to be driven. The friction drive is actuated by actuator (25) under the same compressed air supply that acts on piston (21). Torque acting between the friction plates (24) and sleeve (19) prevent the sleeve (19) from moving into engagement with the dog (23) before the speeds of the sleeve (19) and dog (23) have equalized.
    Type: Grant
    Filed: June 11, 2004
    Date of Patent: March 3, 2009
    Inventor: Reginald Knowles
  • Patent number: 7431137
    Abstract: A synchronizer for a manual transmission with a first and second idler gears rotatably mounted on a transmission shaft with a synchronizer sleeve non-rotatably mounted on the transmission shaft such that it can shift axially. The sleeve can be coupled to the first or second idler gear and comprises a shifting flange with through openings arranged around its periphery. A first and second synchronizer ring are separated by way of locking pins around the periphery, which can be inserted through the openings. At least one of the two synchronizer rings has an outer cone and an inner cone (double cone), that the double cone can be placed in non-positive contact simultaneously with an outer coupling ring that has an inner cone and an inner coupling ring that has an outer cone, and that the two coupling rings can be positively connected to the adjacent idler gear and axially supported against it.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: October 7, 2008
    Assignee: ZF Friedrichshafen AG
    Inventor: Josef Bader
  • Patent number: 7384366
    Abstract: The transfer case reduction gearset is often never used for its original intended function, that is, to provide an additional speed reduction (torque amplification) ratio for the powertrain. This concept allows for the increased use of the transfer case gearset components to work in concert with the automatic transmission to increase its ratio spread. This increase in ratio spread will result in improved launch performance for the vehicle by steepening the effective first gear ratio of the automatic transmission. The increase in ratio spread may also provide for reductions in numerical axle ratio of the vehicle thereby improving the fuel economy during normal highway operation. The present invention focuses on a method of shifting the transmission of the vehicle in accordance with the invention which includes providing a transmission connected to a vehicle engine having a predetermined number of gear ratios which are selectable.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: June 10, 2008
    Assignee: BorgWarner Inc.
    Inventor: William R. Kelley, Jr.
  • Patent number: 7367437
    Abstract: In a shifting device, for a power transmission having a sliding sleeve which is arranged on a transmission shaft and which can be brought into operative engagement with at least one corresponding clutch member and which is limited in its sliding movement by at least one stop structure, the stop structure is formed by a component, in relation to which the sliding sleeve, in its striking position, has some freedom of movement to avoid contact between the sleeve and the stop structure.
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: May 6, 2008
    Assignee: DaimlerChrysler AG
    Inventors: Fritz Bühlmaier, Martin Schetter
  • Publication number: 20070246320
    Abstract: A synchronizing device of a manual transmission for synchronizing rotation speeds of a rotating shaft and a shift gear includes a gear clutch that rotates with the shift gear and a synchronizer assembly. The synchronizer assembly includes a synchronizer ring; at least one first ring, having a slanted surface, between the synchronizer ring and the gear clutch; and at least one second ring with a slanted surface that contacts the slanted surface of the first ring.
    Type: Application
    Filed: October 30, 2006
    Publication date: October 25, 2007
    Inventor: Young Chan Youk
  • Patent number: 6895832
    Abstract: A power transmission system is provided which can prevent a feeling of inertia travel due to torque transmission interruption occurring when a dog clutch is engaged to shift the speed position, without increasing the axial length of a transmission. An input shaft is connected to a prime mover via a main clutch. Gear pairs are formed by input and output gears arranged on the input shaft and output shafts, respectively. A dog clutch connects one of the gear pairs to the input or output shaft. An auxiliary shaft is connected to the prime mover. Transmission paths are formed on the auxiliary shaft for transmitting the driving force of the prime mover to the output shaft at different gear ratios. In shifting the speed position, an assist clutch supplies the driving force to the output shaft via the auxiliary shaft and a selected transmission path.
    Type: Grant
    Filed: April 23, 2003
    Date of Patent: May 24, 2005
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Sunao Ishihara, Kenji Matsuda, Toshiharu Kumagai, Isamu Sunaga
  • Patent number: 6848554
    Abstract: The synchronizer for a manual transmission ensures a spline-aligned during the coupling of the sleeve to the clutch gear. This prevents collision between the sleeve and the clutch gear and improves shifting motion.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: February 1, 2005
    Assignee: Hyundai Motor Company
    Inventor: Young-Chan Youk
  • Patent number: 6820514
    Abstract: A synchronizer body (1) of a synchronizing device for manual transmissions comprising a base body (2) made out of sheet metal by shaping, an inner toothing (11), and an outer toothing (10) and at least one reception (5) formed in the base body (2) for receiving a spring-loaded detent element (7) forms an assembled unit with the spring-loaded detent element (7).
    Type: Grant
    Filed: November 1, 2001
    Date of Patent: November 23, 2004
    Assignee: Ina Walzlager Schaeffler oHG
    Inventors: Josef Schwuger, Rudolf Sinner, Hartwig Waldert
  • Publication number: 20040198548
    Abstract: A synchronizer for motor vehicle driveline components such as transmissions and transfer cases includes a pair of ball ramp mechanisms which amplify synchronizing force and apply such force to one of a pair of friction clutch packs which achieves synchronization of diversely rotating elements. The synchronizer exhibits relatively low operating force. Each ball ramp mechanism includes a pair of ball ramp members having rotational travel limits which also limit their axial separation and an intermediate compression spring assembly. The spring assembly and the travel limits of the ball ramp members limit the force generated by the ball ramp mechanisms and applied to the friction clutch packs to prevent abrupt and uncontrolled actuation of the friction clutch packs and corresponding abrupt synchronization of the rotating elements.
    Type: Application
    Filed: April 4, 2003
    Publication date: October 7, 2004
    Inventors: Dan J. Showalter, Soundararajan Vijayanarayanasamy
  • Patent number: 6719111
    Abstract: Synchronizing device in a motor vehicle gearbox, comprising a synchronizer hub (1), an engaging sleeve (2) non-rotatably but axially displaceably mounted on the hub, an outer and an inner synchronizing ring (8a, 13) on one side of the hub and a single synchronizing ring (8b) on the other side of the hub. The engaging sleeve has first, and second groups of internal teeth (4a, 4b), each group being divided into three sets of teeth and each set in one group adjoining a set in the other group. The outer synchronizing ring has three sets of blocker teeth (9a) facing the engaging sleeve teeth (4a) of the sets of the first group and lacks teeth in intermediate areas (19a), while said single synchronizing ring (8b) has three sets of blocker teeth (9b) facing the engaging sleeve teeth (4b) of the sets of the second group and lack teeth in intermediate areas (19b).
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: April 13, 2004
    Assignee: Ford Global Technologies, LLC
    Inventors: Lars Bengtsson, Sr., Peter Wittke, Richard Torsein
  • Publication number: 20040055844
    Abstract: A transmission is described, in particular an automatic transmission for a vehicle, having at least one shift control element formed at least of a second shift control element half that can be brought into active frictional engagement with a first shift control element half. The shift control element halves can be connected to non-rotating and rotating transmission components, and a positive-locking coupling device is provided at least between the first shift control element half and the transmission components that can be connected thereto. The coupling device also comprises a synchromesh device. In addition, a method is described for controlling a transmission that has at least one shift control element and two shift control element halves which can be brought into active frictional engagement.
    Type: Application
    Filed: August 28, 2003
    Publication date: March 25, 2004
    Inventors: Michael Ebenhoch, Detlef Baasch, Ralf Dreibholz
  • Patent number: 6588563
    Abstract: An arrangement of non-machined sheet metal synchronizer rings (1, 6, 10, 18, 19, 21) is provided, the outer synchronizer rings (1, 6, 10, 19) of which are provided a radial, outwardly projecting gear ring and a radial, outwardly directed flange (3).
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: July 8, 2003
    Assignee: INA-Schaeffler KG
    Inventors: Roland Sarrach, Reiner Martin, Josef Schwuger, Rudolf Sinner
  • Patent number: 6588562
    Abstract: A baulkring-type synchronizer (18) includes multiple cone friction surfaces (28a, 36a 32a 36b and 30a, 38a, 34a, 38b) and jaw clutch spline teeth (26a, 20a, 22a) for frictionally synchronizing and positive connecting gears (14,16) to a shaft (12). Inner rings 32, 34 respectively define the friction surfaces (32a, 34a) and ramp surfaces (32b, 34b) that move a boost member 42 radially outward to engage self-energizing surfaces (44c, 26g and 44d, 26f) to provide additive self-energizing forces in response to limited rotation of the inner rings by synchronizing torque.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: July 8, 2003
    Assignee: Eaton Corporation
    Inventor: Josevaldo Roberto Fernandez
  • Patent number: 6543594
    Abstract: The invention relates to a synchronization device (2) for torque-transmitting components (4, 6, 8) of a transmission comprising a disk set (40) which has several disks (82) and a synchronizer sleeve (30) connected to a shifting device (64). The synchronizer system (2) has mechanisms (82, 84, 86, 88, 90, 92, 94) that divide the torque among the torque transmitting components (4, 6, 8) into an initial lower torque and a subsequent larger synchronizing torque. This is preferably achieved by a gradation of the disk (82) that enables a successive engagement of the disks on the torque transmission.
    Type: Grant
    Filed: January 9, 2001
    Date of Patent: April 8, 2003
    Assignee: ZF Friedrichshafen AG
    Inventor: Gerhard Führer
  • Patent number: 6536572
    Abstract: There are provided a synchronizing system which synchronizes two relatively rotating rotary bodies with each other by frictional forces generated between friction discs, such that a larger torque can be transmitted between the rotary bodies as an input torque becomes larger, and a transmission torque control device for the synchronizing system. In order to transmit torque between an input shaft and a gear member, the synchronizing system which connects the input shaft and the gear member with each other while synchronizing them urges a blocking ring toward the gear member by using a synchronizing spring, when a sleeve is caused to slide toward the blocking ring by an actuator.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: March 25, 2003
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hirokatsu Amanuma, Naoki Uchiyama, Hidenori Okamura, Kenji Honda
  • Patent number: 6533091
    Abstract: Spline teeth 66 formed in the inner periphery of a sleeve 45 slidably supported on a hub 63 fixed to a rotation shaft each comprise a projecting portion 66a constituted by a first inclined surface &agr;, a flat surface &ggr; and a second inclined surface &bgr;, and these projecting portions 66a bias a blocking ring via a synchro-spring 71 in an axial direction to thereby generte a synchronizing load between the sleeve 45 and a gear 37. Immediately before the projecting portions 66a of the spline teeth 66 of the sleeve 45 moving rightward mesh with dog teeth 37a of the gear 37, the second inclined surfaces &bgr; of the projecting portions 66a move and ride on the synchro-spring 71 so as to gradually reduce a pressing force axially applied to the blocking ring 67, thereby making it possible to provide a smooth mesh engagement between the spline teeth 66 of the sleeve 45 and the dog teeth 37a of the gear 37.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: March 18, 2003
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Tadashi Kawada, Makoto Katagiri, Susumu Saito, Hiroyuki Makino
  • Patent number: 6427818
    Abstract: Synchronizing device in a gearbox with double synchronization. The torque is transmitted between the inner and the outer synchronizing ring (11 and 12, respectively) by means of a driver disc (20), which is made with radial driver fingers (22, 23), which engage in notches in the respective synchronizing ring. The driver fingers (22) for the outer synchronizing ring (12) are axially bent out and are received in notches (26) in a guide sleeve in order to save axial space.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: August 6, 2002
    Assignee: Volvo Lastvagnar AB
    Inventor: Anders Borg
  • Publication number: 20020079184
    Abstract: A baulkring-type synchronizer (18) includes multiple cone friction surfaces (28a, 36a 32a 36b and 30a, 38a, 34a, 38b) and jaw clutch spline teeth (26a, 20a, 22a) for frictionally synchronizing and positive connecting gears (14,16) to a shaft (12). Inner rings 32, 34 respectively define the friction surfaces (32a, 34a) and ramp surfaces (32b, 34b) that move a boost member 42 radially outward to engage self-energizing surfaces (44c, 26g and 44d, 26f) to provide additive self-energizing forces in response to limited rotation of the inner rings by synchronizing torque.
    Type: Application
    Filed: November 6, 2001
    Publication date: June 27, 2002
    Inventor: Josevaldo Roberto Fernandez
  • Publication number: 20020036128
    Abstract: There are provided a synchronizing system which synchronizes two relatively rotating rotary bodies with each other by frictional forces generated between friction discs, such that a larger torque can be transmitted between the rotary bodies as an input torque becomes larger, and a transmission torque control device for the synchronizing system. In order to transmit torque between an input shaft and a gear member, the synchronizing system which connects the input shaft and the gear member with each other while synchronizing them urges a blocking ring toward the gear member by using a synchronizing spring, when a sleeve is caused to slide toward the blocking ring by an actuator.
    Type: Application
    Filed: September 21, 2001
    Publication date: March 28, 2002
    Applicant: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hirokatsu Amanuma, Naoki Uchiyama, Hidenori Okamura, Kenji Honda
  • Patent number: 6324930
    Abstract: A gear assembly having a body member with an end wall interconnecting a cylindrical inner wall and a cylindrical outer wall so as to define an annular cavity. The gear assembly also includes a gear ring having a hub segment mounted on and fixed to the outer wall of the body member, and a gear segment having external gear teeth. The gear assembly also includes a clutch ring that is secured to the inner and outer walls of the body member for enclosing the cavity. The clutch ring has clutch teeth adapted for engagement with a shift sleeve associated with a gearshift system.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: December 4, 2001
    Assignee: New Venture Gear, Inc.
    Inventor: John R. Forsyth
  • Patent number: 6244404
    Abstract: A synchronizer for a manual transmission comprises a clutch hub rotated along with an input shaft, a clutch sleeve assembled for performing rotation with the clutch hub to move toward the input shaft and a synchronizer ring formed for meshing with the clutch sleeve when the clutch sleeve moves to be synchronized with driving gears by friction, synchro-lever formed with an upper portion thereof closely attached to a groove of the clutch sleeve and a lower portion thereof positioned at the lateral surface of the clutch hub when its portion is accommodated into a key slot of the clutch hub to thereby occur a synchronizing operation with the driving gear by pushing the synchronizing ring positioned at one side thereof when tilted clockwise or counter-clockwise by being caught on the clutch hub in moving toward the input shaft, and an accommodating part formed as a space among the clutch hub, the synchronizer ring and the driving gear for letting the synchro-lever rotate at a predetermined angle to get a portion t
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: June 12, 2001
    Assignee: Hyundai Motor Company
    Inventor: Myung-Hun Kim
  • Patent number: 6186301
    Abstract: A synchronizer element for use in a synchronizing device of a manual transmission, includes a hub secured in fixed rotative engagement on a gearshaft, and a guide member fixedly secured to the hub and having a splined outer circumference formed with at least one pocket for receiving a loading member and in mesh with a shift sleeve moveable between axially spaced pinion gears rotatably supported on the shaft. The synchronizer element is made of two separate parts which are so joined together as to form pockets for thrust members which are held captive and guided in the pockets.
    Type: Grant
    Filed: July 14, 1999
    Date of Patent: February 13, 2001
    Assignee: INA Wälzlager Schaeffler oHG
    Inventors: Josef Schwuger, Reinhart Malik, Reiner Martin