Spline Connection For Multiple Clutch-elements Patents (Class 192/70.2)
  • Patent number: 7562756
    Abstract: A clutch drum for a multi-plate clutch in an automatic transmission is provided at an inner periphery thereof with splines by which friction plates are engaged. Each of the splines has a tooth tip having two circumferential ends. Only one of the circumferential ends of the tooth tip has a curved surface. The splines of the clutch drum may be formed by form rolling using a tooth forming tool including a tooth root. The tooth root may have a circumferentially leading end and a circumferentially trailing end in a rotational direction, with only the circumferentially leading end having a curved surface.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: July 21, 2009
    Assignee: NSK-Warner K.K.
    Inventor: Hirofumi Nakagomi
  • Patent number: 7556131
    Abstract: A transmission housing for an automatic transmission that includes a first and second plurality of circumferentially spaced inwardly extending sets of protrusions connected to an inner surface of the transmission housing configured to engage clutch assemblies of a planetary transmission. The sets of protrusions are offset from each other.
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: July 7, 2009
    Assignee: Caterpillar Inc.
    Inventor: John M. Seipold
  • Patent number: 7549523
    Abstract: A second clutch piston formed of a plurality of members including a cylindrical cylinder member, a disc-shaped bottom plate member that fits in one end portion of that cylinder member, and a snap ring, has a plurality of long positioning protrusions provided on an inner peripheral surface of the cylinder member. By abutting the disc-shaped bottom plate member against end surfaces of these positioning protrusions, the bottom plate member can be fit into the one end portion of the cylinder member without having to provide notches therein, which enables durability against a pulling force generated in the cylinder member when the friction apply device is applied to be maintained.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: June 23, 2009
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shintaro Goto, Naoki Kato
  • Patent number: 7540212
    Abstract: A method of manufacturing a clutch housing which accommodates therein a plurality of clutch plates adapted to be engaged together so as to transmit a torque, wherein a drum portion and a boss portion can be integrally formed from a plate material so as to form a thick portion having a thickness of not less than approximately 1.3 times as large as that of the plate material and a thin portion having a thickness of not greater than approximately ½ of that of the plate material.
    Type: Grant
    Filed: August 29, 2005
    Date of Patent: June 2, 2009
    Assignee: NSK Warner K.K.
    Inventors: Hideki Oki, Shouji Yatsuyanagi, Tomoyuki Miyazaki, Kiyokazu Ichikawa
  • Publication number: 20090127052
    Abstract: A coupling assembly includes an annular housing, an inner member and a coupling pack including first and second sets of discs that alternate with each other and respectively have connections to the annular housing and the inner member. An actuator compresses the coupling pack to rotationally couple the annular housing and the inner member to each other about a central axis. One or more springs is received within the second set of discs between the actuator and the inner member for decompressing the coupling pack to rotationally decouple the annular housing and the inner member from each other about the central axis. A set of retainers in the form of retaining tabs hold the coupling pack, the actuator, the spring(s) and the inner member within the housing.
    Type: Application
    Filed: November 20, 2007
    Publication date: May 21, 2009
    Inventors: Mark A. Willett, Terry O. Hendrick, Jeffrey C. Hoppe
  • Publication number: 20090127053
    Abstract: A coupling assembly including an annular housing, an inner member and a plurality of coupling components is provided. The coupling components include a coupling pack, an actuator and springs between the actuator and the inner member. A set of retainers in the form of retaining tabs hold the coupling components as well as the inner member within the housing.
    Type: Application
    Filed: November 20, 2007
    Publication date: May 21, 2009
    Inventors: Brian M. Nosakowski, Terry O. Hendrick, Jeffrey C. Hoppe
  • Patent number: 7530284
    Abstract: A multiplate clutch outer part is formed by pressing a steel plate. The multiplate clutch outer part includes: an end wall portion; and a cylindrical portion having its one end formed continuously with the outer peripheral end of the end wall portion, and opened at the other end. A bottom face of each of outer grooves is formed to be an inclined face which is getting far away from an axis of the cylindrical portion toward the open end of the cylindrical portion. Arc faces formed at inner corners of each of the outer grooves has an increasing radius of curvature toward the open end of the cylindrical portion. Thus, there is provided a multiplate clutch outer part for which press working capable of minimizing ironing resistance can be performed to reduce defective forming rate.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: May 12, 2009
    Assignee: Kabushiki Kaisha F.C.C.
    Inventors: Hiroshi Sano, Takahiro Ito
  • Patent number: 7503441
    Abstract: In one embodiment, a torque converter includes a two-piece cover, an impeller, a turbine, and a lockup clutch. The two-piece cover includes a base plate that is configured for attachment to a drive member. The base plate has a plurality of lugs around the periphery thereof, and at least some of the lugs have straight flanks. The two-piece cover also includes a cylindrical wall piece that is fixed to the base plate. The impeller is fixed to the cylindrical wall piece. The turbine is rotationally mounted between the impeller and the cover and is configured for attachment to a driven member. The lockup clutch is configured to lock the impeller and cover to the turbine when a fluid pressure applied to the lockup clutch increases above a torque converter lockup pressure.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: March 17, 2009
    Inventors: Clint D. Cannon, Raymond Lewis Elder, II
  • Patent number: 7434672
    Abstract: A hub for a clutch disk arrangement having a friction lining unit with a radially inner set of teeth, the hub including a hub element which can be connected non-rotatably to a shaft; a torque-transmitting arrangement connected to the hub element and having a radially outer set of teeth; and a ring-shaped connecting element made of sheet metal and having a plurality of axially extending tabs and a plurality of openings between the tabs. The outer teeth of the torque transmitting arrangement and the inner teeth of the friction lining unit engage in the openings so that torque can be transmitted from the friction lining element to the hub. The connecting element is preferably fixed to the torsional vibration damper and the inner teeth are preferably axially moveable in the openings so that the friction lining unit can move axially with respect to other friction lining units in a multi-disk clutch.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: October 14, 2008
    Assignee: ZF Friedrichshafen AG
    Inventor: Gerald Buer
  • Patent number: 7416067
    Abstract: The invention relates to a power transmission unit, in particular a multiple disk clutch or friction brake, in which a disk carrier that has at least one disk, which has external teeth and is fastened to it in a non-rotating fashion, which disk carrier, in a cylinder section and oriented toward the disk, has axial grooves and axial ribs distributed over the circumference in alternating fashion and is connected to a hub on one side by means of a drive plate spaced axially apart from the disks; a non-rotatable connection between the drive plate and the disk carrier is produced by means of plug-in teeth in order to transmit a torque. The object of the invention is to propose a power transmission unit (1) in which the axial space is reduced.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: August 26, 2008
    Assignee: BorgWarner Inc.
    Inventors: Johannes Heinrich, Hans Juergen Hauck
  • Patent number: 7399249
    Abstract: In a multi-disk clutch comprising a rotary body having splines formed thereon so as to extend helically along the surface thereof, with a number of disks having central openings with inwardly projecting teeth via which the discs are in rotationally positively locking engagement with the rotary body, the teeth are twisted so as to extend in a plane normal to the surface of the helically extending splines of the rotary body so that the end face areas of the teeth are in planar contact with the spline surfaces of the rotary body for the transmission of torque between the rotary body and the disks.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: July 15, 2008
    Assignee: Daimler AG
    Inventors: Philip Gansloser, Tobias Haerter, Werner Klein, Hartmut Nied, Rolf Schroeder, Petra Tennert
  • Patent number: 7387193
    Abstract: A drum assembly for use with a coupling arrangement includes an outer member and an inner member that is mountable on the outer member. The outer member includes first and second annular portions and an intermediate portion extending between the annular portions. The first annular portion has a first mating surface that defines a first opening having a first diameter, the second annular portion defines a second opening having a second diameter that is smaller than the first diameter, and the intermediate portion defines a shoulder. The inner member includes a generally radially extending portion having a generally axially facing surface and a second mating surface that is engageable with the first mating surface to interlock the inner and outer members together. When the inner member is mounted on the outer member, the radially extending portion extends into the first opening, and the generally axially facing surface engages the shoulder.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: June 17, 2008
    Assignee: Means Industries, Inc.
    Inventors: Michael T. Doherty, Thomas Meier
  • Patent number: 7383932
    Abstract: A clutch hub provided with a side wall at an end of a cylindrical portion. The cylindrical portion is formed to have convexed and concaved portions to serve as a spline and an oil passage is formed on a tooth of the spline. An oil dam is formed by plastic deformation on the inner peripheral surface of the tooth of the spline with the oil passage formed thereon at a position separated from an open end by a predetermined distance, concaved grooves are formed on the outer peripheral surface of the spline with the oil dam formed thereon.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: June 10, 2008
    Assignee: NSK-Warner K.K.
    Inventors: Tomoyuki Miyazaki, Kiyokazu Ichikawa, Yosuke Ikeda
  • Publication number: 20080128236
    Abstract: Three external tooth wet friction materials are each composed of an external tooth plate and a lining adhered to one surface thereof along an entire circumference. Three internal tooth wet friction materials are each composed of an internal tooth plate and a lining adhered to one surface thereof along an entire circumference. Then, the three external tooth wet friction materials and the three internal tooth wet friction materials are disposed side by side so as to constitute a multi-plate frictional engagement apparatus. A thickness of the internal tooth plate is made thinner in view of its good heat discharge capability, and the thickness of the external tooth plate is made thicker by that much.
    Type: Application
    Filed: December 4, 2007
    Publication date: June 5, 2008
    Applicants: AISIN KAKO KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masato SUZUKI, Takuya Muranaka, Hirofumi Onishi
  • Patent number: 7350631
    Abstract: An automatic transmission includes a clutch drum formed, by press forming, with splines including recessed portions and raised portions, and engaging with clutch plates; and a rotational speed measuring device configured to measure a rotational speed of the clutch drum, and including a surface sensing device disposed outside an outer surface of the clutch drum, and configured to sense movement of the recessed portions and the raised portions of the splines. The clutch drum includes first openings each formed in one of the recessed portions recessed radially inwards, and each confronting the clutch plates radially.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: April 1, 2008
    Assignee: Jatco Ltd
    Inventor: Jun Furuichi
  • Publication number: 20080073169
    Abstract: An indexing drive device for periodic stopping and starting of a rotating output is provided, which includes: (a) a driven cog, wherein the driven cog comprises: (i) a plurality of outer surfaces equally spaced around a periphery of the driven cog; and (ii) a plurality of driven lobes equally spaced around the driven cog; (b) a driving cog adapted to be cooperatively positioned to engage with the driven cog, wherein the driving cog comprises: (i) at least two driving lobes, whereby the driving lobes on the driving cog engage the driven lobes of the driven cog during a turning cycle of the driven cog; and (ii) a semi-circular disc that mates with one of the outer surfaces during a dwell cycle of the driven cog that holds the driven cog in a fixed position during the dwell cycle, wherein the disc has a blank section in the region of the driving lobes to allow the driven cog to turn during a turning cycle of the driven cog.
    Type: Application
    Filed: September 27, 2007
    Publication date: March 27, 2008
    Inventor: Michael C. Walters
  • Patent number: 7311463
    Abstract: An arrangement for axially supporting two jointly rotating components (2, 3) by way of a snap ring (6) having two displaceable impacting ends (6a, 6b), which are separated from each other by a peripheral gap (7), and which can move in the region of a radial spring path. The snap ring (6) is inserted into an annular groove of the supporting component (2). The supporting component (3) comprises one ramp (8, 9) in the region of the radial spring path of the impacting ends (6a, 6b) of the snap ring (6).
    Type: Grant
    Filed: January 16, 2004
    Date of Patent: December 25, 2007
    Assignee: ZF Friedrichshafen AG
    Inventor: Josef Haupt
  • Publication number: 20070284212
    Abstract: A multiplate clutch outer part is formed by pressing a steel plate. The multiplate clutch outer part includes: an end wall portion; and a cylindrical portion having its one end formed continuously with the outer peripheral end of the end wall portion, and opened at the other end. A bottom face of each of outer grooves is formed to be an inclined face which is getting far away from an axis of the cylindrical portion toward the open end of the cylindrical portion. Arc faces formed at inner corners of each of the outer grooves has an increasing radius of curvature toward the open end of the cylindrical portion. Thus, there is provided a multiplate clutch outer part for which press working capable of minimizing ironing resistance can be performed to reduce defective forming rate.
    Type: Application
    Filed: June 8, 2006
    Publication date: December 13, 2007
    Inventors: Hiroshi Sano, Takahiro Ito
  • Patent number: 7278523
    Abstract: A dual clutch transmission with an axially parallel clutches that includes a disc support having a first circumferential groove, a backing plate having a corresponding second circumferential groove, and an annular spring element adapted to concurrently fit within the first circumferential groove and the second circumferential groove to cause the backing plate to be axially immobilized with respect to the disc support.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: October 9, 2007
    Assignee: BorgWarner Inc.
    Inventor: Johannes Heinrich
  • Patent number: 7278525
    Abstract: A transmission assembly in accordance with the invention includes a plurality of torque-transmitting mechanisms. A hub member of the assembly includes a radially extending wall, and a circumferentially extending wall formed integrally with the radially extending wall. The circumferentially extending wall includes a first plurality of internal splines, a second plurality of external splines spaced with the internal splines, and a cylindrical end portion at a distal end of the hub and terminating both the internal splines and the external splines to prevent failure in high speed operations. A plurality of clutch plates associated with one of the plurality of torque-transmitting mechanisms are splined to the external splines of the hub member, and a plurality of clutch plates associated with another one of the plurality of torque-transmitting mechanisms are splined to the internal splines of the hub member.
    Type: Grant
    Filed: February 3, 2005
    Date of Patent: October 9, 2007
    Assignee: General Motors Corporation
    Inventors: Patrick S. Portell, Teodor Mostior
  • Patent number: 7258218
    Abstract: The present invention provides a multi-plate clutch comprising drive plates which are coaxially disposed within a clutch housing and to which friction materials are fixed, driven plates which are alternately arranged with the drive plates and a piston having an urging surface for providing an axial load to engage the drive plates and the driven plates with each other and wherein a plurality of urging portions protruding toward the driven plate are formed on the urging surface of the piston and the urging portions are provided in correspondence to an arrangement of spline projections provided on an outer periphery of the driven plate un-equidistantly along a circumferential direction.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: August 21, 2007
    Assignee: NSK-Warner K.K.
    Inventor: Hiroyuki Kinpara
  • Publication number: 20070175725
    Abstract: A multiplate wet clutch has a first clutch portion comprising at least a first engaging element and a first engaged element, which are alternately arranged, a second clutch portion comprising at least a second engaging element and a second engaged element and a piston which fastens and releases engagements between the first and second engaging elements and the first and second engaged elements. The piston presses the first and the second clutch portions.
    Type: Application
    Filed: January 31, 2007
    Publication date: August 2, 2007
    Applicant: NSK-WARNER KABUSHIKI KAISHA
    Inventor: Manabu Sawayanagi
  • Patent number: 7246693
    Abstract: A piston support housing for a transmission assembly includes a plurality of axially-extending finger portions engaging a plurality of spline portions formed in a corresponding transmission case, and a plurality of friction plates are assembled adjacent the piston support housing such that the finger portions extend circumjacent peripheral edges of the friction plates. The friction plates include a plurality of torque-transmitting spline portions disposed circumferentially intermediate the finger portions. The friction plates also include a plurality of recesses disposed with one adjacent each of the finger portions to preclude contact between the finger portions and the friction plates thereby preventing torque-transmission through the finger portions to the transmission case.
    Type: Grant
    Filed: February 3, 2005
    Date of Patent: July 24, 2007
    Assignee: General Motors Corporation
    Inventors: Patrick S. Portell, Teodor Mostior
  • Patent number: 7243770
    Abstract: A clutch housing assembly for use in vehicle drivelines includes at least one strengthening member at an open end of the housing. The strengthening member preferably is formed by cutting away portions of the housing near the open end and then deforming the remaining portions. The deformed portions preferably are folded over and against a surface of the housing near the open end. The strengthening members provide additional strength to the housing at the open end to resist deformations that may otherwise occur because of forces incident on the assembly during operation of the vehicle driveline.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: July 17, 2007
    Assignee: Koppy Corporation
    Inventor: Ronald E. Prater
  • Patent number: 7237664
    Abstract: A power transmitting apparatus, which can simultaneously achieve radial size reduction and improve strength of the driving clutch plate, has a clutch housing (2) and a plurality of driving clutch plates (6) each having projections (6a) projecting radially outward from the periphery of the driving clutch plate (6). The projections (6a) engages the clutch housing (2) to rotate with it. A clutch member (4) has a plurality of driven clutch plates (7) alternately arranged between the driving clutch plates (6). A pressure plate (5) is provided to carry out the pressure-contact or release of the driving clutch plates (6) relative to the driven clutch plates (7). Each of the driving clutch plates (6) has a peripheral surface (?), a projected wall surface (?), of the projections (6a), and a connecting surface (?). Each connecting surface (?) connects the projected wall surfaces (?) and the peripheral surface (?).
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: July 3, 2007
    Assignee: Kabushiki Kaisha, F.C.C.
    Inventors: Norihiro Sugita, Makoto Kataoka, Tomokatsu Kosuga, Ryo Egawa
  • Patent number: 7204357
    Abstract: A high performance clutch pack for use in the high gear clutch of a POWERGLIDE transmission is disclosed. The present clutch pack is disposed in a modified clutch drum including fluid exhaust vents to reduce piston drag and weight reduction features for accommodating up to ten friction disks and eleven steel disks representing a 150 percent increase in holding force in comparison to the stock POWERGLIDE clutch pack, which typically provides only four friction disks and five steel disks. In one embodiment the steel disks include elliptically shaped holes at predetermined locations for imparting turbulence to the flow of transmission fluid within the clutch pack and also feature anti-drag spacers for reducing parasitic drag during freewheeling. The clutch pack is actuated by a modified clutch piston having an increased stroke correlated to the increased number of friction disks delivering maximum holding force with minimal increase in rotating mass.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: April 17, 2007
    Assignee: Sonnax Industries, Inc.
    Inventor: Andrew D. Dumas
  • Patent number: 7150347
    Abstract: A drum assembly for use with a coupling arrangement includes an outer member and an inner member that is mountable on the outer member. The outer member includes first and second annular portions connected together. The first annular portion has a first mating surface that defines a first opening having a first diameter, and the second annular portion defining a second opening having a second diameter that is smaller than the first diameter. The inner member includes a generally radially extending portion and a flange portion extending generally axially from the radially extending portion. The radially extending portion includes a second mating surface that is engageable with the first mating surface to interlock the inner and outer members together. When the inner member is mounted on the outer member, the radially extending portion extends into the first opening, and the flange portion extends into the second opening.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: December 19, 2006
    Assignee: Means Industries, Inc.
    Inventors: Michael T. Doherty, Thomas Meier
  • Patent number: 7124869
    Abstract: A multi-plate clutch, particularly for a dual clutch transmission, has at least one clutch housing alternately holds externally and internally toothed plate disks, a hub arranged at the end face on the clutch housing. The hub has a central opening for receiving a gear shaft and openings disposed to reduce weight. Additional openings are provided in the lateral surface of the clutch basket, with at least a portion of the openings distributed over at least a section of the configured as triangular recesses.
    Type: Grant
    Filed: August 12, 2005
    Date of Patent: October 24, 2006
    Assignee: Dr. Ing. h.c.F. Porsche Aktiengesellschaft
    Inventors: Peter Hoebel, Michael Sternberg
  • Patent number: 7114605
    Abstract: A multiple disk clutch device for arrangement in a drivetrain of a motor vehicle between a drive unit and a transmission, includes at least an inner and an outer disk clutch arrangement that are radially staggered and associated with a transmission input shaft of the transmission. Each of the plural clutch disk arrangements includes a set of disks, the set of disks have an outer disk associated with an outer disk carrier and an inner disk associated with an inner disk carrier. The outer disks are operable to mutually engage the inner disks in a driving arrangement. Each of the plural disk sets includes at least one disk having a lining and at least one disk being unlined where one of the inner and outer disks of the inner and the outer disk clutch arrangements of the plural disk clutch arrangements is the lined disk.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: October 3, 2006
    Assignee: ZF Sachs AG
    Inventors: Wolfgang Grosspietsch, Wolfgang Kundermann, Volker Stampf, Angelika Ebert, Wolfgang Reisser
  • Patent number: 7100464
    Abstract: A splined connection comprises a shaft with longitudinal radially outwardly protruding ridges and intermediate grooves, a hub provided with correspondingly shaped ridges and intermediate grooves and is adapted to being fitted in engagement with the shaft ridges and grooves to provide between the shaft and the hub a connection region causing the shaft and hub to rotate together. A sealing arrangement adapted to close off the connection region. The sealing arrangement comprises two annular sealing elements applied at an axial distance from one another and adjacent to the connection region so that the sealing elements are each in continuous contact with a surface of the shaft around the whole of their inner radial surface and in continuous contact with a surface of the hub around the whole of their outer radial surface.
    Type: Grant
    Filed: May 17, 2004
    Date of Patent: September 5, 2006
    Assignee: Scania CV AB (publ)
    Inventor: Michael Gardin
  • Patent number: 7090061
    Abstract: A snap ring having improved retention characteristics is configured for use inside a cylindrical cavity. The cavity includes a retention device having a retention surface forming an obtuse angle with the cavity wall. As an axial load is applied to the snap ring, it moves along the retention surface, thereby experiencing a reduction in diameter. The snap ring includes a circumferential discontinuity defined by two generally radial planar surfaces, or ring ends. The discontinuity is configured such that the ring ends will abut one another before the snap ring diameter is reduced beyond the retaining diameter.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: August 15, 2006
    Assignee: Ford Global Technologies, LLC
    Inventors: Nelson David Bove, Jeffrey Alan Miller, Larry Francis Traficant, Jay Robert Deller, Thomas Frederick McGill
  • Patent number: 7070036
    Abstract: A power takeoff having an output shaft, an output gear and a connect-disconnect clutch mechanism for connecting the output gear to the output shaft, the clutch mechanism, including a clutch hub, a disc stack slidably mounted between the output gear and the clutch hub and a piston for compressing the disc stack-thereby to bring the output shaft into rotatable engagement with the transmission of an engine; in which the clutch hub is normally biased by a spring away from the piston but is confined by snap rings to limit the hub's movement along the output shaft in such a manner so that substantially no operational force is placed on the snap rings during compression of the disc stack.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: July 4, 2006
    Assignee: Muncie Power Products, Inc.
    Inventor: Rickey Joe Fernandez
  • Patent number: 7059459
    Abstract: A multiple disc clutch apparatus, comprises a plurality of externally splined annular friction plates, to one side surface only of each externally splined annular friction plate being fixed a friction material, and each externally splined annular friction plate being formed with engagement teeth at an outer periphery, a plurality of internally splined annular friction plates, to one side surface only of each internally splined annular friction plate being fixed a friction material, and each internally splined annular friction plate being formed with engagement teeth at an inner periphery. The externally splined friction plate and the internally splined friction plate are alternately arranged in a direction in which the frictional materials are not overlapped each other.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: June 13, 2006
    Assignee: NSK-Warner K.K.
    Inventor: Tatsuro Miyoshi
  • Patent number: 7059461
    Abstract: A torque-transmitting mechanism has a plurality of friction plates, which are forced into engagement by a fluid-operated piston and reacted in engagement by a backing plate. The backing plate is assembled on a rotatable shaft to be aligned with splines on the shaft to prevent axial removal of the backing plate without rotation thereof which is restricted due to a spline engagement between the backing plate and the shaft.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: June 13, 2006
    Assignee: General Motors Corporation
    Inventor: James A. Raszkowski
  • Patent number: 7044283
    Abstract: A dry multiple-disk clutch for transmitting power from the crankshaft of a motorcycle to a transmission input shaft and cutting off power transmission includes an outer clutch member interlocked with the crankshaft so as to be driven for rotation, a plurality of driving friction disks interlocked with the outer clutch member, a plurality of driven friction disks alternated with the driving friction disks and interlocked with the transmission input shaft, and a pressure member disposed opposite to the outer clutch member with the driving and the driven friction disks arranged alternately between the outer clutch member and the pressure member, and capable of moving in opposite axial direction to compress the driving and the driven friction disks together and to disengage the driven friction disks from the driving friction disks.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: May 16, 2006
    Assignees: Honda Motor Co., Ltd., Kabushiki Kaisha F.C.C.
    Inventors: Yoshitsugu Gokan, Hideaki Segami, Norihiro Sugita
  • Patent number: 7024751
    Abstract: A housing for a vehicle component and a method for making the same. The housing comprises a housing body having an interior surface and an exterior surface. The outer wall of the housing is formed with a plurality of longitudinal splines and a plurality of longitudinal troughs located between confronting splines. A spiral groove is cut into the interior surface of the outer wall so as to remove material sufficient to engage at least one of the troughs thereby forming a plurality of apertures having a closed periphery and extending longitudinally along the outer wall.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: April 11, 2006
    Assignee: Metaldyne Company LLC
    Inventors: Michael C. Sefcik, Robert F. Veldman
  • Patent number: 7011199
    Abstract: A friction disc in a tandem frictional engagement device, that is spline-fitted to a first coupling members is pressed by a first piston in a first direction, wherein the friction disc and another friction disc on the side of a first coupled member are clamped between the first piston and a first stopper member. A friction disc that is spline-fitted to a second coupling member is pressed by a second piston in an opposite direction, wherein the friction disc and another friction disc on the side of a second coupled member are clamped between the second piston and a second stopper member. A leading end of a first fitting portion of the first coupling member to which the friction disc is spline-fitted is the second stopper member and substantially abuts a second fitting portion of the second coupling member to which the friction disc is spline-fitted.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: March 14, 2006
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hirofumi Onishi, Yuji Yasuda, Toshiki Kanada
  • Patent number: 7007783
    Abstract: A disk carrier assembly for a multi-disk clutch includes a drive plate having a plurality of radially extending load teeth and a plurality of radially extending bearing teeth alternately disposed about the circumference of the drive plate. A disk carrier is included that has an axially cylinder segment with a plurality of axial protrusions that extend radially inward and are alternately disposed about the segment with plurality of axial grooves that extend radially outward. The axial grooves are adapted to radially retain a plurality of clutch disks while allowing operative axial movement. The plurality of axial protrusions further include a plurality of axial load protrusions alternately disposed between a plurality of axial bearing protrusions, each of the axial load protrusion have a load tooth cutout formed on its axial end and each of the axial bearing protrusion have an elongated area with an annular retaining groove.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: March 7, 2006
    Assignee: BorgWarner Inc.
    Inventors: Rainer Gerathewohl, Volker Becker, Ingo Steinberg, Andreas Schmidt
  • Patent number: 6988603
    Abstract: A disk-packet unit comprising a pre-tensioned disk packet for mounting on guide elements in a transmission component. The packet comprises at least two adjacent elements that form frictional surfaces, which can be intercoupled in a frictional engagement by means of an intermediate element that forms a frictional surface and comprises an auxiliary mounting device. At least one spring device is located between at least two adjacent elements that form frictional surfaces. The auxiliary mounting device comprises a sleeve element and a tensioning device. The elements that form frictional surfaces are carried on the sleeve element and the latter comprises a stop. The tensioning device can be detachably connected to the sleeve element and produces a force for pre-tensioning the disk packet.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: January 24, 2006
    Assignees: Voith Turbo GmbH & Co. KG, Miba Frictec GmbH
    Inventors: Alfred Hörtenhuber, Gerhard Meier-Burkamp, Alexander Küruer
  • Patent number: 6938747
    Abstract: A transmission includes a clutch basket and a driving disc each having teeth and tooth spaces which correspond to one another. A plug-in intermeshing connection between the driving disc and the clutch basket is provided such that there is no torsional backlash and such that no rattling noises are produced. To this end, at least one of the teeth of the driving disc and/or at least one of the teeth of the clutch basked has a slot. The tooth thickness of at least one of the teeth of the driving disc is greater than at least one of the tooth space widths of the clutch basket. In order to avoid rattling noises, it is also suggested that at least one pair formed of a tooth and a corresponding opposite tooth space may be configured such that the tooth is displaced with respect to the corresponding tooth space.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: September 6, 2005
    Assignee: Volkswagen AG
    Inventors: Wolfgang Schreiber, Ingo Steinberg
  • Patent number: 6920970
    Abstract: A high performance clutch pack assembly for use in the high gear clutch of a Powerglide transmission is disclosed. The present clutch assembly is disposed in a modified clutch drum having weight reduction features for receiving a modified clutch pack comprising up to ten friction disks and eleven steel disks, which represents a 150 per cent increase in surface contact area and holding force in comparison to the original equipment Powerglide clutch pack having only four friction disks and five steel disks. The present clutch pack assembly is actuated by a modified clutch piston having an increased stroke correlated to the increased number of friction disks providing maximum holding force for the present clutch pack assembly with minimal increase in rotating mass.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: July 26, 2005
    Assignee: Sonnax Industries, Inc.
    Inventor: Andrew D. Dumas
  • Patent number: 6915892
    Abstract: A driving plate for a multi-plate clutch system includes a plurality of external teeth adapted to be matingly engaged within corresponding internal teeth of a housing of the clutch system. The external teeth are disposed substantially equidistantly along the circumference of the driving plate. At least one tooth of the external teeth is disposed offset in the circumferential direction from adjacent external teeth.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: July 12, 2005
    Assignee: BorgWarner Inc.
    Inventors: Karl-Heinz Bauer, Frank Guenter, Johannes Heinrich, Robert Weiss
  • Patent number: 6883656
    Abstract: A driver unit for multi-disk clutch systems includes a driver disk having a plurality of external teeth and a clutch hub into which the driver disk is adapted to be inserted. The clutch hub also includes a casing and a plurality of internal teeth disposed on the casing and adapted to be cooperatively received in meshing engagement with the external teeth.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: April 26, 2005
    Assignee: BorgWarner, Inc.
    Inventors: Thomas Schmidt, Frank Guenter, Robert Weiss
  • Patent number: 6874610
    Abstract: A compact dry power takeoff clutch unit is adapted for interconnection with a flywheel of an engine. A housing is adapted for attachment to the engine and has a plurality of interleaved friction and separator disks maintained therein. A drive ring is connected to the friction disks and to the flywheel for driving the friction disks by the engine. An output shaft is interconnected with the separator disks. A pair of anti-friction bearings are received by the housing and provide the sole support for the output shaft. A pressure plate is configured to be nestingly received by a cup-shaped flywheel in order to maintain certain standardized dimensional constraints. Actuation of the clutch is achieved by a rotary union interposed between the pair of support bearings. A quiescent position for the separator disks is achieved by the mounting of the separator disks between the head and spring of shoulder bolts secured to an output hub mounted upon the output shaft.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: April 5, 2005
    Assignee: Power Transmission Technology, Inc.
    Inventors: David C. Heidenreich, Robert E. Herchick
  • Patent number: 6871733
    Abstract: A torque converter is provided with an impeller and a cover, fixed to one another and configured for attachment to a drive member. A turbine is rotationally mounted between the impeller and the cover and is configured for attachment to a driven member. A lockup clutch is provided to lock the impeller and cover to the turbine when a fluid pressure applied to the lockup clutch increases above a torque converter lockup pressure. The lockup clutch may include a clutch-pack having rings that are splined to the piston or to the cover via tabs. The flanks of the tabs and their corresponding lugs may be substantially radial, or the flanks of the tabs or lugs may be parallel to one another. The cover may be formed from a base plate and a cylindrical wall piece. A plurality of lugs may be formed around the periphery of the base plate, and ones of the tabs may be splined thereto.
    Type: Grant
    Filed: May 2, 2003
    Date of Patent: March 29, 2005
    Assignee: Automotive Transmission Specialists, Inc.
    Inventors: Clint D. Cannon, Raymond Lewis Elder, II
  • Patent number: 6868950
    Abstract: A splined annular member has spline teeth formed in its cylindrical wall. The teeth are formed as an arrangement of alternating ridges which protrude inwardly and troughs formed between the ridges. Each ridge has a transverse (circumferential) groove that extends outwardly. The groove is defined by two side walls that face each other and a bottom portion extending between the side walls. The side walls are substantially parallel to each other, and at least one of the junctions between the bottom portion and the side walls is formed by half blanking. The spline grooves increase the overall rigidity of the annular member without increase in weight or size. Thus, the present invention provides a light-weight and small-size splined annular member having high rigidity and an automatic transmission incorporating the splined annular member.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: March 22, 2005
    Assignee: Aisin AW Co., Ltd.
    Inventor: Kenji Masegi
  • Publication number: 20040195067
    Abstract: A friction clutch includes a housing arrangement connectable to a drive element for rotation in common about an axis of rotation, a plurality of first friction disks connected to the housing arrangement such that the first friction disks are fixed with respect to rotation and axially movable relative to the housing arrangement, a hub rotatable about the axis of rotation relative to the housing arrangement and having a plurality of radially outward-projecting connection arms, a plurality of second friction disks defining engagement opening therein being closed on radial inner sides thereof, wherein the connection arms of the hub engage the engagement openings of the second friction disks such that the second friction disks are fixed with respect to rotation and axially movable relative to the hub, and a force-exerting arrangement exerting a force for urging the first friction elements and the second friction elements into contact with each other
    Type: Application
    Filed: February 20, 2004
    Publication date: October 7, 2004
    Applicant: Sachs Race Engineering GmbH
    Inventors: Horst Friedrich, Werner Selzam, Klaus-Peter Oberle, Michael Istschenko
  • Patent number: 6793058
    Abstract: A clutch disk arrangement for a multi-disk clutch includes a hub element connectable to a shaft for rotation with the shaft about an axis of rotation. A carrier arrangement has a first carrier element and a second carrier element. The first carrier element is connected to the hub so that the first carrier element rotates with the hub. The second carrier element is connected to the first carrier element such that it is foxed with respect to rotation and axially movable relative to the first carrier element. The clutch disk arrangement further comprises at least two friction lining units. On of the friction lining units is firmly connected to the first carrier element and a second one of the friction elements is firmly connected to the second carrier element. Accordingly, the friction lining units are fixed with respect to rotation and axially movable relative to the hub element via the carrier arrangement.
    Type: Grant
    Filed: October 21, 2002
    Date of Patent: September 21, 2004
    Assignee: Mannesmann Sachs AG
    Inventor: Andreas Orlamünder
  • Patent number: 6776274
    Abstract: An assembly for use in a vehicle driveline comprises a housing with an inner surface and an outer surface for a vehicle driveline component, a retention element disposed in the housing, and at least one deformation formed on the inner surface operatively in contact with the retention element to retain the vehicle driveline component in the housing. This design and method of manufacture eliminates the need for differently sized spacers because the location of the deformations and the retention element can be tailored relative to the actual location of the components to ensure proper distance between components and the retention element. Moreover, because the spacer may be used as the retention element, the need for a snap ring is eliminated.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: August 17, 2004
    Assignee: Koppy Corporation
    Inventor: Ronald E. Prater
  • Publication number: 20040134741
    Abstract: A separator plate useful in a wet-type multiplate clutch is provided on a friction surface thereof with elongated asperities extending with regularity in a predetermined direction. Peak portions of the elongated asperities, said peak portions being to project toward a counterpart member when the separator plate is assembled in the wet-type multiplate clutch, have been removed to form elongated plateaus. The separator plate can be manufactured by fixedly mounting a blank for the separator plate on a work support, forming elongated asperities with regularity in a predetermined direction on one of opposite surfaces of the blank by a grinding wheel, and then removing peak portions of the elongated asperities, said peak portions being to project toward a counterpart member when the separator plate is assembled in the wet-type multiplate clutch, to form elongated plateaus.
    Type: Application
    Filed: December 29, 2003
    Publication date: July 15, 2004
    Applicant: NSK-Warner K.K.
    Inventors: Hiroyuki Kinpara, Masaki Sakabe