In Series Plural Interchangeably Locked Nonplanetary Units Patents (Class 74/745)
  • Patent number: 9382975
    Abstract: A transmission has a three input torque-transmitting mechanism, such as friction clutches, to achieve torque flow through a countershaft gearing arrangement. The transmission includes an input member, an output member, an input clutch assembly having three input clutches and a countershaft gearing arrangement. The countershaft gearing arrangement is operatively connected with the input clutch assembly and includes: co-planar intermeshing gear sets, first and second countershafts, first, second and third intermediate input shafts.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: July 5, 2016
    Assignee: GM Global Technology Operations, LLC
    Inventor: Darrell Lee Robinette
  • Patent number: 9157444
    Abstract: A supercharger transmission includes a first chamber having timing gears operatively disposed therein. A second chamber has transmission gears operatively disposed therein. An oil fill level is defined in the second chamber. A bearing retention wall is disposed between the first chamber and the second chamber. The bearing retention wall includes a return port to allow fluid communication between the first chamber and the second chamber. The return port is an aperture defined in the bearing retention wall below the oil fill level. The bearing retention wall also includes a crosstalk port to allow fluid communication between the first chamber and the second chamber. The crosstalk port is an aperture defined in the bearing retention wall above the oil fill level.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: October 13, 2015
    Assignee: Eaton Corporation
    Inventor: Jon P. Trudeau
  • Patent number: 9121473
    Abstract: A gear box includes an output shaft defining multiple output drivers and includes a plurality of gear sets having the same diametral pitch. A common input shaft is operatively attached to each of the plurality of gear sets such that the gear sets rotate continuously and concurrently with rotation of the input shaft. Each of the output drivers is operatively attached to the output shaft and rotatably driven by a respective one of the plurality of gear sets. The multiple output drivers share a common axis of rotation with the output shaft. The output speed of the gear box may be changed by disconnecting one of the output drivers from a driven device and reconnecting another one of the output drivers to the driven device. The output speed of the gear box may be changed without having to disengage and/or change out any of the gears in the gear box.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: September 1, 2015
    Assignee: Morrison Container Handling Solutions, Inc.
    Inventors: Nick Wilson, Cezary Mroz
  • Patent number: 9097312
    Abstract: A multi-clutch transmission for a motor vehicle with a prime mover has a main transmission, a range section and an output shaft, the main transmission including one input shaft, a main shaft and a main countershaft, the main shaft being rotationally fixed with a range input shaft of the range section, the range section including a range main shaft that is rotationally fixed with the output shaft, a range countershaft, range gearwheels that can selectively transfer power from the range input member to the range countershaft and on to the range main shaft, and range clutches, the multi-clutch transmission including a by-passing torque path in which power can be transferred when the range section is shifted, and where the by-passing torque path includes a by-passing clutch that selectively can rotationally lock the main countershaft to the range countershaft.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: August 4, 2015
    Assignee: Volvo Lastvagnar AB
    Inventors: Anders Hedman, Daniel Stålberg
  • Publication number: 20150068360
    Abstract: The invention relates to a gear motor series having two pinions with different numbers of teeth (z1a, z1b), and several toothed wheels with different numbers of teeth (z2a, z3a, z4a), the pinions and the toothed wheels being designed such that each pinion, in several predetermined axial distances (a), can be paired with one of the toothed wheels in order to form a first gear stage. According to the invention, one individual toothed wheel is provided for each predetermined axial distance (a), which is embodied such that it can be optionally paired with the one pinion or with the other pinion to form a first gear stage.
    Type: Application
    Filed: April 17, 2013
    Publication date: March 12, 2015
    Applicant: SIEMENS AG
    Inventor: Jens Kunert
  • Patent number: 8910546
    Abstract: A motorcycle transmission assembly including a transmission housing having a hollow interior. The assembly includes a gear train having gears mounted in the hollow interior of the housing. The train includes an input operatively connectable to a motor of the motorcycle and an output operatively connectable to a drive wheel of the motorcycle. The transmission assembly includes a brake rotor having opposite faces operatively connected to the output of the gear train via at least one gear. The transmission assembly includes a brake caliper fixedly mounted with respect to the transmission housing having opposing brake pads. Each of the pads is positioned on one of the brake rotor faces. The pads are moveable between a running position in which the pads are spaced from the faces and a braking position in which the pads engage the faces to resist rotation of the gear and thereby the output.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: December 16, 2014
    Inventor: Jason L. Hicks
  • Patent number: 8869642
    Abstract: A method of shifting at least one of a speed increasing stage (H) and/or a speed reductions stage (L) in a claw shifted transfer gear box (VG) in a drive train of a vehicle having a drive engine and a load shiftable shift transmission (SG). The transfer gearbox (VG) is shifted into the neutral position (N) and, after the synchronization, is shifted into the speed increasing stage (H) or the speed reductions stage (L). During synchronization, the shift transmission (SG) is decelerated or accelerated, by activating at least an additional shift element, so that the output rotational speed (n_SG) of the shift transmission (SG) is matched to the output rotational speed (n_VG) of the transfer gearbox (VG), multiplied by the target gear ratio in the transfer gear box (VG).
    Type: Grant
    Filed: May 4, 2011
    Date of Patent: October 28, 2014
    Assignee: ZF Friedrichshafen AG
    Inventor: Markus Maurer
  • Patent number: 8584543
    Abstract: In a drive train of a motor vehicle having an engine and a dual-clutch gearbox for transmitting engine power to driven wheels of the motor vehicle, an additional gearbox having at least two shift positions with different transmission ratios is arranged between the engine (5) and the driven vehicle wheels in series with the dual clutch gearbox.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: November 19, 2013
    Assignee: Daimler AG
    Inventor: Carsten Gitt
  • Publication number: 20130087018
    Abstract: A method of shifting at least one of a speed increasing stage (H) and/or a speed reductions stage (L) in a claw shifted transfer gear box (VG) in a drive train of a vehicle having a drive engine and a load shiftable shift transmission (SG). The transfer gearbox (VG) is shifted into the neutral position (N) and, after the synchronization, is shifted into the speed increasing stage (H) or the speed reductions stage (L). During synchronization, the shift transmission (SG) is decelerated or accelerated, by activating at least an additional shift element, so that the output rotational speed (n_SG) of the shift transmission (SG) is matched to the output rotational speed (n_VG) of the transfer gearbox (VG), multiplied by the target gear ratio in the transfer gear box (VG).
    Type: Application
    Filed: May 4, 2011
    Publication date: April 11, 2013
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventor: Markus Maurer
  • Patent number: 8359940
    Abstract: In a twin-clutch transmission, when a third shift valve (for example) goes out of order and the shift change accordingly becomes incapable of being carried out, the hydraulic pressure outputted from the third shift valve is controlled by a fourth shift valve operated by a first shift solenoid for a first shift valve. Accordingly, the hydraulic pressure outputted by a second linear solenoid is supplied to one of second hydraulic actuators, thereby enabling one of second predetermined transmission gear stages to be pre-shifted by use of a second power transmission path. When the first shift valve is used as a fail-safe, it is possible for the vehicle to make a minimum necessary run by setting up one of the second predetermined transmission gear stages. Furthermore, the fourth shift valve is driven by use of the existing first shift solenoid, thus minimizing the number of parts and cost.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: January 29, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventor: Takao Sato
  • Patent number: 8225695
    Abstract: An arrangement for inhibiting axial movement of a range clutch in a transmission includes a driver adapted to move the range clutch axially on an output shaft between a high range position and a low range position, a sensor arrangement adapted to sense at least one of reverse rotational direction and potential reverse rotational direction of at least one of a main shaft and the output shaft and to generate an inhibit range shift signal upon sensing at least one of reverse rotational direction and potential reverse rotational direction, and a controller adapted to inhibit operation of the driver upon receipt of the inhibit range shift signal from the sensor arrangement. A transmission and a vehicle including such an arrangement are also disclosed. A method for inhibiting axial movement of a range clutch in a transmission, and a method of retrofitting a transmission with an arrangement for inhibiting axial movement of a range clutch are also disclosed.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: July 24, 2012
    Assignee: Mack Trucks, Inc.
    Inventor: Timothy G. Hayes
  • Patent number: 8100034
    Abstract: In a group transmission having a number of countershafts, wherein three input constants are provided on a transmission input shaft for driving a countershaft such that the group transmission is of very short construction, the transmission input shaft is connectable to an intermediate shaft for direct power transmission, with the countershaft being disconnectable in the direct gear in order to avoid drag losses.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: January 24, 2012
    Assignee: Daimler AG
    Inventor: Carsten Gitt
  • Publication number: 20120000303
    Abstract: Electromotive auxiliary drive, particularly a wiper drive, with an electric motor and a downstream gear forming an output shaft of the auxiliary drive, presenting at least two gear stages arranged in series in a drive train between the electric motor and the output shaft, of which one first gear stage is designed in the manner of a worm gear consisting of a worm and of a gearwheel or worm wheel interacting with this worm.
    Type: Application
    Filed: March 22, 2010
    Publication date: January 5, 2012
    Applicant: VALEO SYSTEMES D'ESSUYAGE
    Inventor: Siegfried Stefani
  • Publication number: 20110259147
    Abstract: The invention relates to an automated multi-group transmission of a motor vehicle and a method for its operation, with at least two gearing groups successively disposed in the power flow of the drive train, with a clutch assembly having at least one start-up clutch, by means of which a connection can be established between a drive shaft of a drive motor and a transmission input shaft associated with a first gearing group, with a shifting device, by means of which a connection can be established between the transmission input shaft and a transmission main shaft associated with a second gearing group, whereby the transmission main shaft is designed as a transmission output shaft or is at least functionally connected to a transmission output shaft, and with a means by which the tractive force gear shifting can be carried out.
    Type: Application
    Filed: October 15, 2009
    Publication date: October 27, 2011
    Inventor: Rayk Hoffmann
  • Patent number: 8011274
    Abstract: A motorized machine with a “mutually definite units of energy for forced energy economy” (MDUFEE) gearbox family with a simplified shifting pattern of shifting mechanisms to cause a real gear dependence on mechanical inertia created by the weight of a load and a fast changeable resistant force in response to the movement. Each gearbox includes a sufficient number of gearsets with gear ratios selected from a faltering geometric sequence and arranged to provide a sufficient number of torques and overdrive speeds to the output shaft to satisfactorily operate the machine over a conventional range of machine speeds and at least limit the use of the acceleration system in the motor to reduce the heat and power generated from a the motor to less than 50 percent that used to generate a similar conventional range of machine speeds using a motor with a conventional gear box.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: September 6, 2011
    Inventor: Vladimir Abramov
  • Patent number: 7914412
    Abstract: In a load shift transmission for a utility vehicle having a transmission input shaft, a split group, a main group and a range group, a dual clutch with two input shafts, a main shaft and a countershaft with input constants including loose gear wheels, one loose gear wheel of an input constant is selectively rotationally fixedly connectable by means of shift elements to either one of the input shafts which can in each case be coupled by means of clutches (K1,K2) to the main transmission input shaft, the countershaft can be driven by one of three input constants with power being transmitted via the countershaft in all forward gears with the exception of a direct gear. The arrangement provides, with a simple design, for the possibility to carry out sequential shifts and multiple up-shifts and multiple down-shifts without an interruption in traction force.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: March 29, 2011
    Assignee: Daimler AG
    Inventor: Carsten Gitt
  • Patent number: 7866232
    Abstract: In a commercial vehicle transmission with a main group and a downstream group including a downstream group countershaft, the downstream group includes means for decoupling the downstream group countershaft in direct through drive so that in direct through-drive the countershaft does not run in an oil sump and no churning losses occur thereby increasing vehicle transmission efficiency.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: January 11, 2011
    Assignee: Daimler AG
    Inventors: Carsten Gitt, Detlef Schnitzer
  • Publication number: 20110000334
    Abstract: A multi-stage transmission has driving gears m and driven gears n supported on a hollow driven gear shaft 12. The driven gears n are individually engageable with and disengageable from the hollow driven gear shaft 12. The driving and driven gears m, n mesh constantly. The multi-stage transmission is intended to reduce friction loss between the hollow driven gear shaft 12 and cam rods 21,22 provided within the driven gear shaft 12 for engagement and disengagement between the driven gears n and the driven gear shaft 12. There are provided swing pawl members 24, 25 for controlling engagement and disengagement between each of the driven gears n and the driven gear shaft 12, and cam rods 21, 22 inserted in the driven gear shaft 12 to slide relative to the internal surface of the shaft 12 to operate the swing pawl members 24, 25.
    Type: Application
    Filed: February 23, 2009
    Publication date: January 6, 2011
    Inventor: Shinya Matsumoto
  • Publication number: 20110000333
    Abstract: Disclosed is a multi-stage transmission which ensures that gear shifts are efficiently performed with a small number of component parts, smooth operations are performed with small forces, there are no loss of changeover time during gear shifts and no loss of the driving force, and the shift shock is small. The transmission has a driven gear shaft 12, in which are provided a first swing pawl member 25 engageable in a rotational direction with a first gear n1, a second swing pawl member 25 engageable in the rotational direction with a second gear n2 which is one step lower in reduction ratio, a third swing pawl member 24 engageable in the opposite rotational direction with the first gear n1, and a fourth swing pawl member 24 engageable in the opposite rotational direction with the second gear n2. A first cam rod 21 and a second cam rod 22 are provided which are slidable axially on and along the surface of an internal hole of the driven gear shaft 12.
    Type: Application
    Filed: February 23, 2009
    Publication date: January 6, 2011
    Inventor: Shinya Matsumoto
  • Patent number: 7730807
    Abstract: A transmission for a tractor has a forward/reverse transmission unit for selectively changing a rotational direction of power of a first shaft connected with an engine and transmitting the power to a second shaft connected with an axle shaft, a main transmission unit installed between the second shaft and the axle shaft and having a plurality of gears to speed-change the power transmitted from the second shaft in four-speed, and a sub-transmission unit installed between the main transmission unit and the axle shaft and having a plurality of gears to speed-change again the power transmitted from the main transmission unit in four-speed. The transmission realizes forward/reverse 16-speed while having a compact structure.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: June 8, 2010
    Assignee: LS Mtron Ltd
    Inventors: Hyo-jung Kim, Chul-hwan Choi, Hyung-tai Kim, Jung-min Kim
  • Patent number: 7721701
    Abstract: A rotary machine is provided having rotating forward and rearward work members having cyclic non-constant angle motion there between, the machine includes a rotating shaft and a first gear eccentrically mounted with the rotating shaft. A reaction gear in mesh with the first gear causes the first gear to rotate with respect to the rotating shaft. First and second connecting rods are pivotally connected with the first gear. First and second crank arms are pivotally connected with the respective first and second connecting rods. First and second coaxial shafts are connected with the respective first and second first crank arms. The first shaft is connected with at least one forward work member. The second shaft is connected with at least one rearward work member.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: May 25, 2010
    Inventor: Andrzej Dec
  • Publication number: 20100107812
    Abstract: The invention relates to a transmission (10) for transmitting a torque generated by a drive engine (74) to at least one drive axle (76, 78) of a vehicle (72). The vehicle (72) is in particular an agricultural or industrial utility vehicle. The transmission (10) comprises at least one main transmission unit (12) which can function independently. The main transmission unit (12) has a gear transmission and/or an auxiliary-range transmission. It is possible for an option transmission module (14) to be adapted onto the main transmission unit (12). It is possible by means of the option transmission module (14) to expand the functionality of the transmission (10). It is intended to specify and further develop a transmission (10) with which it is possible to provide, in particular from an economical aspect, a diverse range of transmissions for vehicles (72) of a series, and in which the installation space between the drive engine (74) and the main transmission unit (12) can be better utilized.
    Type: Application
    Filed: January 17, 2008
    Publication date: May 6, 2010
    Inventors: Ulrich Otten, Frank Buhrke, Hannes Fischer
  • Patent number: 7703353
    Abstract: A drive unit located in a power path between a transmission output and the wheels of a vehicle for reversing the direction of the transmission output includes a gear set including an input driveably connected to the transmission output, and a gearset output alternately rotating in a forward rotary direction and an underdriven reverse rotary direction relative to the speed and direction of the transmission output. A drive mechanism transmits power between the gearset output and the wheels.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: April 27, 2010
    Assignee: Ford Global Technologies, LLC
    Inventor: David A. Janson
  • Publication number: 20090305833
    Abstract: A multi-group transmission of a vehicle is arranged in a drivetrain and includes traction force support during gearshift operations. A clutch mechanism, including a frictional clutch and two shifting clutches is arranged between a drive motor with a driveshaft and a transmission input shaft, such that the driveshaft can be connected to the transmission input shaft by one shifting clutch in a first shift position in combination with the frictional clutch or in a second shift position with bridging of the frictional clutch, such that the driveshaft can be directly connected to a main transmission shaft by the other shifting clutch in a shift position in active combination with the frictional clutch. In a method for operating the transmission, the frictional clutch is controlled and operated in combination with the first shifting clutch as a starting clutch and with the second shifting clutch as an intermediate-gear clutch.
    Type: Application
    Filed: June 3, 2009
    Publication date: December 10, 2009
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Alan DITTRICH, Rayk HOFFMANN
  • Patent number: 7625306
    Abstract: A transmission including a primary shaft rotatably supported, a drive pulley mounted on the primary shaft, a secondary shaft rotatably supported, a driven pulley mounted on the secondary shaft, a belt wrapped between the drive pulley and the driven pulley, a first output shaft rotatably supported, a second output shaft rotatably supported, a low/reverse drive gear provided on the primary shaft, a low driven gear provided on the second output shaft and meshing with the low/reverse drive gear, and a reverse driven gear provided on the first output shaft and meshing with the low driven gear.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: December 1, 2009
    Assignee: Honda Motor Co., Ltd.
    Inventor: Takao Sato
  • Publication number: 20090272211
    Abstract: A multi-group transmission of a motor vehicle which includes at least two transmission groups arranged in a drivetrain and a way for supporting traction force during gearshifts such that traction-force gearshifts are maintained with improved shifting comfort at comparatively low cost, little design effort and compact installation space demands. At least one electromagnetic clutch is a change-under-load unit by which, bypassing the force flow of at least one main group made as a gear-change transmission, an active connection can be formed between a driveshaft and a main transmission shaft or a transmission output shaft. During a gearshift operation, an active connection is temporarily made between a driveshaft and a main transmission shaft or a transmission output shaft by way of at least one electromagnetic clutch designed as a change-under-load unit.
    Type: Application
    Filed: May 1, 2009
    Publication date: November 5, 2009
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Rayk HOFFMANN, Alan DITTRICH
  • Publication number: 20090133533
    Abstract: This invention relates to a main-box-and-auxiliary-box-structural twin-countershaft twelve-speed transmission, with a main box and an auxiliary box mainly. Said main box has an input shaft (1), a main shaft (10) and two countershafts (14) arranged symmetrically at the two sides of the main shaft, there being provided corresponding gear drive between the main shaft and the countershafts, there being provided six gears positioned independently and three synchronizers (4) on the main shaft, shift forks (5) for the synchronizers are connected to a shift lever via shift fork shafts (16) and via an operation mechanism.
    Type: Application
    Filed: October 25, 2006
    Publication date: May 28, 2009
    Inventors: Lin Yang, Shunli Wang, Zhijin Sun
  • Publication number: 20090107289
    Abstract: An automated multi-group standard transmission, for a utility vehicle, and a process for changing gears in the multi-group transmission. The multi-group transmission includes at least two multi-speed transmission groups arranged one after the other, such that a multitude of gears can be shifted. A transmission input shaft that can be connected to an engine, via a startup element, is associated with a first transmission group and a second transmission main shaft is associated with a second transmission group. Load shifting mechanisms produce a temporary direct connection between the transmission input shaft and the transmission main shaft such that an intermediate gear can be shifted during a gear change from an original gear into a target gear. The load shifting mechanism enables gear changes that are virtually free of interruptions in load transfer during a gear change from a lower to a higher gear, thus increasing a high operational comfort.
    Type: Application
    Filed: April 25, 2007
    Publication date: April 30, 2009
    Applicant: ZF Friedrichshafen AG
    Inventor: Kai Borntrager
  • Patent number: 7509885
    Abstract: An embodiment provides a shift inhibitor apparatus. At least a portion of the range actuating assembly is moveable between a range first ratio and a range second ratio. The portion of the range actuating assembly is moveable, at least in part, in response to a fluid pressure. The range chamber is selectively in fluid communication with a vent. The shift inhibitor includes a main section neutral interlock having an interlock chamber. At least a portion of the main section neutral interlock is moveable between a first condition and a second condition. The interlock chamber is selectively in fluid communication with the vent. The range chamber can be exhausted such that the range section is selectively switched from the first ratio to the second ratio. The interlock chamber can be exhausted such that the main section neutral interlock is selectively switched from the first condition to the second condition.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: March 31, 2009
    Assignee: Eaton Corporation
    Inventors: Kurt Gerlofs, Dave Stevens, Mark Hirsch, Charles Bradley, Michael J. Huggins, Gerard F. Smith, Michael E. Lemon
  • Publication number: 20080314196
    Abstract: A light and small-sized gear type multi-stage automatic transmission capable of eliminating the power loss in comparison with a current automatic transmission and usable also for a large-sized vehicle by diversifying gears, wherein backward position, and a neutral position and several gear blocks for changing the shift between HIGH and LOW are combined to operate the transmission with the microcomputer operation. Since the gear for changing the shift between HIGH and LOW can provide the number of speed change by the number of grade of the number of the gears to be combined, the gear for changing the shift between HIGH and LOW can improve the fuel consumption and can cope with an engine brake by utilizing the combination of an electronic parking brake with the selection of the gear. In addition, since the same gear block is used, the manufacturing cost is remarkably reduced.
    Type: Application
    Filed: November 12, 2003
    Publication date: December 25, 2008
    Inventors: Toshihiro Fukumoto, Keiko Ebato
  • Publication number: 20080134834
    Abstract: In an automatic load shift transmission including a transmission output shaft arranged coaxially with respect to a twin clutch disposed at the transmission input side, a countershaft is provided comprising only fixed gears and all the freely movable gears and the shift elements are arranged on the shafts extending along the axis of the twin clutches and the input and output shafts.
    Type: Application
    Filed: January 14, 2008
    Publication date: June 12, 2008
    Inventors: Carsten Gitt, Detlef Schnitzer
  • Patent number: 7281603
    Abstract: An engine for an offroad vehicle including a crankcase, a transversely extending crankshaft, and a transmission connected to the crankshaft. The transmission includes a drive pulley, a driven pulley, and a drive belt connecting the drive pulley and the driven pulley. The driven pulley includes a fixed half and a movable half. A spring is adapted to bias the movable half toward the fixed half. A transmission primary shaft is connected to the drive pulley and is coaxial to the crankshaft. A transmission main shaft is connected to the driven pulley. A transmission case is connected to the crankcase. The crankcase includes a cavity and the transmission case includes an opening that corresponds with the cavity such that the main shaft extends through the cavity and the opening. The spring is at least partially positioned within the cavity.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: October 16, 2007
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Kazutaka Fukuda
  • Patent number: 7278950
    Abstract: A stage-geared gearbox for motor vehicles, includes an unsynchronized basic gearbox, at least one synchronized auxiliary gear and at least one control unit for controlling engagement and disengagement of the gears of the gearbox and also neutral position. In the gearbox, the control unit is arranged so as, when input signals indicating that neutral position is selected are received, to put the synchronized auxiliary gear in neutral position.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: October 9, 2007
    Assignee: Volvo Lastvagnar AB
    Inventors: Marcus Steen, Lars Karlsson
  • Patent number: 7243575
    Abstract: An indexing and braking mechanism for a manual transmission having a shifting mechanism and at least one rotatable drive shaft is disclosed. The mechanism includes an indexing mechanism for controlling movement of the shifting mechanism between at least a first position and a neutral position. The indexing mechanism has a plate having a plurality of notches formed thereon, wherein one notch corresponds to the first position and another notch corresponds to the neutral position. A locking mechanism is provided for selectively limiting movement of one of the at least one rotatable drive shaft. The locking mechanism is adapted to selectively engage the plurality of notches to selectively maintain the indexing mechanism in one of the first position and the neutral position. The locking mechanism includes an indexing lever having a contact surface for contacting the rotatable drive shaft.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: July 17, 2007
    Assignee: BRP-Rotax GmbH & Co. KG
    Inventor: Gerhard Niederwimmer
  • Patent number: 7219782
    Abstract: A gear position in an automotive gearbox is detected on the basis of measuring a value indicative of the speed of a rotating shaft between an engine and the gearbox, and a value indicative of the speed of an output shaft from the gearbox, and calculating a quotient of these two speeds. If for a predetermined period of time the quotient is between upper and lower limits about a quotient value pertaining to the respective gear position, it is decided that a gear position obtains. Through information about a selected split position of a split gear it is as possible gear position rule out all gear positions which do not correspond to the selected split position, thereby enabling said upper and lower limits to be raised and lowered respectively for the remaining gear positions which correspond to the selected split position.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: May 22, 2007
    Assignee: Scania CV AB (publ)
    Inventors: Magnus Pettersson, Matts Jargenstedt
  • Patent number: 7207240
    Abstract: A command assembly for controlling a splitter in a transmission allows shifting between first and reverse-low gears while the splitter is engaged without requiring the splitter to cycle during the shift. The command assembly creates a signal path for a split enable signal that keeps the transmission in the split mode as long as the transmission engages a low rail of a main drive box. By creating a separate signal path for the split enable signal when the transmission is operating in split mode, the splitter does not need to be cycled when the driver shifts between first and reverse-low gears.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: April 24, 2007
    Assignee: ArvinMeritor Technology, LLC
    Inventors: Patrick Chaney, Ernest R. Thompson
  • Patent number: 7070534
    Abstract: A power transmission includes a plurality of ratio gear members, a planetary splitter, and a plurality of splitter control gear members. The ratio gear members are divided between two countershafts and two input clutches such that two power paths are provided from the transmission input. The splitter control gear members are disposed on the output of each of the ratio gears to establish input power paths to the planetary splitter, which delivers power to the transmission output shaft. By providing selective engagement of two selectively operable input clutches, a plurality of mechanical clutches and the planetary splitter gearset eight forward speed ratios are provided. A ninth forward ratio is provide by a mechanical clutch directly interconnecting one of the input clutches with the transmission output shaft in bypassing relation to the planetary splitter.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: July 4, 2006
    Assignee: General Motors Corporation
    Inventor: Robert J. Pelouch
  • Patent number: 7021170
    Abstract: In an automated multi-group transmission consisting of one front-mounted group, one main group and one range group and in which the front-mounted group transmission and the range group transmission comprise a first shifting position for a low-speed total transmission ratio, a second shifting position for a high-speed total transmission ratio and a third shifting position as neutral position for interrupting the torque transmission, in a gear-shifting method for gear change, the range group transmission and the front-mounted group transmission are simultaneously brought to their respective neutral shifting position, which makes it possible to shift a deceleration of the main transmission. With the start of the gear-shifting process in the neutral positions, there also begins the control of the engine rotational speed to the total ratio of the target gear.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: April 4, 2006
    Assignee: ZF Friedrichshafen AG
    Inventor: Bernd Döbele
  • Patent number: 7013756
    Abstract: A low speed splitter transmission assembly includes a main gearbox and an auxiliary gearbox. The transmission assembly provides a relatively small numerical gear ratio step from the highest numerical gear ratio to the second highest gear ratio. The relatively small step between the highest and the second highest numerical gear ratios allows shifting from the highest numerical gear ratio during movement of the vehicle.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: March 21, 2006
    Assignee: ZF Meritor, LLC
    Inventor: Landon Ball
  • Patent number: 6988426
    Abstract: A countershaft transmission includes an input member drivingly connected to a power source and at least one directional clutch assembly structured and arranged to be selectively engageable with the input member. At least one speed clutch assembly is structured and arranged to be selectively engageable with the at least one directional clutch assembly. A dual range assembly is structured and arranged to be selectively engageable with the at least one speed clutch assembly. An output member is selectively engageable with the dual range assembly wherein a rotational speed of the input member is transformed to one of a high range speed or a low range speed of the output member through the dual range assembly.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: January 24, 2006
    Assignee: Caterpillar Inc.
    Inventor: Glen P. Calvert
  • Patent number: 6973854
    Abstract: An auxiliary gear box for a transmission is provided including a piston housing having a first and second bore. First and second pistons are respectively arranged within the first and second bores and separate each of the first and second bores into two chambers. First and second shift shafts respectively extends from the first and second pistons and are each connected to shift forks. The exposed surface area of the piston in the chamber having the shift shaft is less than the exposed surface area of the piston on the chamber opposite the shift shaft. As a result, if both chambers of a bore are pressurized, the piston will move in the direction of the chamber having the shift shaft since a greater force will be generated on the piston in the chamber without the shift shaft. A three actuator arrangement is used to selectively actuate the pistons.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: December 13, 2005
    Assignee: ZF Meritor, LLC.
    Inventors: Thomas M. Balamucki, Landon Ball
  • Patent number: 6968756
    Abstract: A multi-speed ratio apparatus to control output for use, but not limited to, either as a module connected to a transmission or as a stand alone transmission. The multi-speed ratio apparatus is connected to a driving member (such as, for example, an engine, motor, or transmission) and a driven member (such as a shaft, differential, or axle). The apparatus having at least one rotary speed converter, the rotary speed converter having a conjugate pair of cam parts and a reaction disk interconnected between the conjugate pair of cam parts. The reaction disk is capable of operably coupling the conjugate pair of cam parts. Further the apparatus includes a grounding member.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: November 29, 2005
    Assignee: Synkinetics, Inc.
    Inventors: Frank A. Folino, John M. McClelland
  • Patent number: 6902502
    Abstract: A continuously variable transmission including a driving pulley, a driven pulley, an endless dry-type belt wound around both pulleys, a tension-adjusting device for pressing the slack side of the belt to generate belt tension, stroke mechanisms provided on both pulleys for axially shifting the movable sheaves, a ratio-changing motor, and a gear mechanism for transmitting the rotational force generated by the motor to both stroke mechanisms in such a way that the movable sheaves of both pulleys can be shifted synchronously and axially oppositely in relation to the fixed sheaves. With this arrangement, the belt is prevented from slipping, the transmission ratio can be controlled precisely and stably, and the shift-response of this transmission can be improved. The motor can be reduced both in its size and its consumption of electric power.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: June 7, 2005
    Assignee: Daihatsu Motor Co., Ltd.
    Inventors: Hisayasu Murakami, Yasuyuki Temma, Masahiro Tanaka
  • Patent number: 6715379
    Abstract: An all terrain vehicle comprising a V-belt continuously variable transmission and a gear-type transmission, being capable of transmitting drive torque from an engine with controlled engine braking but without loss of the torque, thereby giving a rider an improved driving feel. The V-belt continuously variable transmission and the gear-type transmission are placed in this order from upstream in a power transmission path from the engine to wheels. A one-way clutch for transmitting only the drive torque from the engine to the wheel and a torque limiter for transmitting the torque less than a predetermined value are arranged in parallel, between, e.g., a countershaft and forward intermediate gears fitted onto the countershaft.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: April 6, 2004
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Akio Miguchi, Yasutaka Kobayashi
  • Patent number: 6585618
    Abstract: A remote control toy car control system is constructed to include a dual-gearshift transmission mechanism coupled to the engine of the remote control toy car for transmission output power of the engine between a high torque position and a low torque position, a forward backward transmission control mechanism coupled to the output end of the dual-gearshift transmission mechanism for controlling forward/backward movement of the toy car, and a differential assembly coupled to the forward backward transmission control mechanism for enabling the rear wheels of the toy car to turn at different speeds when going round corners.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: July 1, 2003
    Inventor: Ke-Way Lu
  • Publication number: 20020152838
    Abstract: Disclosed is an all terrain vehicle comprising a V-belt continuously variable transmission and a gear-type transmission, and capable of transmitting drive torque from an engine with controlled engine braking but without loss of the torque, thereby giving a rider an improved driving feel. The V-belt continuously variable transmission and the gear-type transmission are placed in this order from upstream in a power transmission path from the engine to wheels. A one-way clutch for transmitting only the drive torque from the engine to the wheel and a torque limiter for transmitting the torque less than a predetermined value are arranged in parallel, between, e.g., a countershaft and forward intermediate gears fitted onto the countershaft.
    Type: Application
    Filed: April 18, 2002
    Publication date: October 24, 2002
    Inventors: Akio Miguchi, Yasutaka Kobayashi
  • Patent number: 6446521
    Abstract: A tractor transmission includes a change speed mechanism, a shift lever (30) for shifting the change speed mechanism, a super-reduction mechanism (16) for decelerating and outputting power inputted thereto, the super-reduction mechanism having a larger reduction ratio than the change speed mechanism, and an overdrive mechanism (45) for accelerating and outputting power inputted thereto. A single switching device (29) is provided for operating both the super-reduction mechanism and overdrive mechanism. The switching device is shiftable, when the super-reduction mechanism is in neutral, from a state of operating the super-reduction mechanism to a state of operating the overdrive mechanism.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: September 10, 2002
    Assignee: Kubota Corporation
    Inventors: Masaaki Hama, Kenji Kato, Isamu Yamanishi, Masao Takagi
  • Patent number: 6439082
    Abstract: A multi-stage transmission (3) of which gears do not rattle when an engine (1) is idling. The multi-stage transmission (3) is equipped with a splitter (17) that has a neutral position (N). The splitter (17) is located between a clutch (2) and a main transmission (18). A drive power from the engine (1) is not transmitted to the main transmission when the splitter (17) is in the neutral position. Thus, a counter shaft (32) in the transmission (3) does not rotate, and the gears in the transmission (3) do not rattle. The splitter (17) is shifted to a high or low gear (H or L) after a predetermined interval (tint) so that the gears rotate and lubrication oil is caused to splash. When the splitter (17) is in the neutral position, the lubrication oil is not fed to shaft supports (bearings) in the transmission (3). The interval period is determined from temperature of the lubrication oil.
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: August 27, 2002
    Assignee: Isuzu Motors Limited
    Inventor: Shigemori Onuki
  • Patent number: 6370980
    Abstract: A vehicle gearbox includes a basic gearbox with a main shaft that is an input shaft to a high-low range gearset joined to the basic gearbox. The basic gearbox has a control shaft, which, rotated in either direction from a neutral position, engages a selected gear. The control shaft is coordinated with a lock-out device which is controlled by a first sensor, which senses the speed of the output shaft from the range gearbox, and a second sensor which senses the engaged range in the range gearbox. An operating device holds the lock-out device in a lock-out position which prevents rotation of the control shaft towards the position for the lowest synchronized gear in the basic box, when the vehicle speed exceeds a predetermined speed in the low range of the gearbox.
    Type: Grant
    Filed: August 8, 2000
    Date of Patent: April 16, 2002
    Assignee: Volvo Lastvagnar AB
    Inventors: Ronald Olsson, Sverker Alfredsson, Stig-Erik Johannesson
  • Patent number: 6354166
    Abstract: A heavy vehicle transmission auxiliary gear box has a piston housing defining internal fluid chambers. A piston shaft is further included to achieve the gear shifts in the auxiliary gear box. A yoke element is coupled to the shaft for engaging the multi-speed transmission. A piston is disposed on the shaft in the internal fluid chambers to move the shaft and the yoke element between first and second positions. Shoulder elements on the shaft prevent direct contact between the piston and the piston housing when the shaft and the yoke element are actuated between the first and second positions.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: March 12, 2002
    Assignee: ZF Meritor, LLC
    Inventors: Tom Balamucki, Landon Ball, Peggy Marie Garrett