Manually Operated Type Of Lockout Means Patents (Class 180/250)
  • Patent number: 10328796
    Abstract: A transmission to transfer case adaptor kit, having a transfer case to convert a two-wheel drive production truck to four-wheel drive enabling a drivetrain that allows all four wheels of the truck to receive torque from an engine of the truck, whereby the truck has a transmission system and is retrofitted with a front axle adaptor kit, and a transfer case parking brake system adaptor kit and support mount.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: June 25, 2019
    Inventor: Rolando Farradas
  • Patent number: 10308069
    Abstract: A front axle adaptor kit, having a front differential assembly, first and second shock absorber brackets, a spring support bracket, a track-bar bracket, and a dampener bracket to convert a two-wheel drive production truck to four-wheel drive enabling a drivetrain that allows all four wheels of the truck to receive torque from an engine of the truck. The truck has a transmission system and is retrofitted with a transmission to transfer case adaptor kit, and a transfer case parking brake system adaptor kit and support mount.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: June 4, 2019
    Assignee: The Rolando Farradas Living Trust
    Inventor: Rolando Farradas
  • Patent number: 10245948
    Abstract: An axle drive mechanism includes a driving toothed wheel, a drive mechanism housing, a differential cage, a differential gear, a first and a second output shaft, and at least one shiftable torque transmission device. The at least one shiftable torque transmission is disposed between the driving toothed wheel and the first output shaft and includes a torque transmission region. The torque transmission region is at least partially disposed between said differential cage bearings in the axial direction.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: April 2, 2019
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Gero Bansemir, Hans Rastel, Dirk Stammann
  • Patent number: 10155443
    Abstract: A transfer case parking brake system adaptor kit and support mount to convert a two-wheel drive production truck to four-wheel drive enabling a drivetrain that allows all four wheels of the truck to receive torque from an engine of the truck, whereby the truck has a transmission system and is retrofitted with a front axle adaptor kit, and a transmission to transfer case adaptor kit.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: December 18, 2018
    Inventor: Rolando Farradas
  • Patent number: 9453570
    Abstract: A differential lock mechanism includes a shift member and a shift collar that is moveable by the shift member between an engaged position with a differential assembly and a disengaged position. A pneumatic control provides a first pneumatic signal to move the shift collar into the engaged position and provides a second pneumatic signal to return the shift collar to the disengaged position.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: September 27, 2016
    Assignee: ArvinMeritor Technology, LLC
    Inventor: Robert J. Martin, III
  • Patent number: 9435413
    Abstract: A transmission power switch device assembled with rotary shaft has a simplified structure and provides power transmission and switching effect. The transmission power switch device includes a rotary shaft connected with a power source. On the rotary shaft are disposed a first drive mechanism, a second drive mechanism and a brake device rotatable with the rotary shaft. The brake device is movable on the rotary shaft to selectively brake the first drive mechanism or the second drive mechanism so as to transmit power to an output shaft.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: September 6, 2016
    Inventor: Sheng-Tsai Tseng
  • Publication number: 20150096822
    Abstract: A differential mechanism regulating device which is mechanically connected to two manipulators is miniaturized. When a first cable and a second cable are pulled, a collecting member moves its position. As a result of this movement, the collecting member tilts a portion of an arm by way of a rod. As a result, a differential lock is released. The operation of the first cable and the operation of the second cable can be merged by the collecting member, and it is sufficient to connect only a collecting transmission member to the arm. The connection between the arm and the collecting transmission member can be simplified thus realizing the miniaturization of the differential mechanism.
    Type: Application
    Filed: October 2, 2014
    Publication date: April 9, 2015
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Koji Sato, Koshi Hayakawa
  • Patent number: 8827025
    Abstract: A vehicle is described having plural modes of operation for the front and rear differential and whereupon start-up of the vehicle, the front and rear differentials are opened to their most open position.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: September 9, 2014
    Assignee: Polaris Industries Inc.
    Inventor: Roger J. Hapka
  • Patent number: 8725376
    Abstract: A vehicle can be operated in a first drive mode in which a front differential is set to a non-driven state and a rear differential is set to a differential state, a second drive mode in which the front differential is set to a non-driven state and the rear differential is set to a differential locked state, a third drive mode in which the front differential is set to a differential state and the rear differential is set to a differential locked state, and a fourth drive mode in which the front differential is set to a differential locked state and the rear differential is set to a differential locked state. Transition is allowed only between adjacent drive modes.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: May 13, 2014
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Naoki Murota, Hiroyuki Fujimoto, Hiroshi Kawamura
  • Patent number: 8246096
    Abstract: A differential action railroad car wheelset axle has two individual stub axles, each having one or more annular rings or grooves on the interior ends, with the interior ends of the individual stub axles being rotatably mounted within a multi-piece sleeve assembly. The axle assembly has provision for safety pins to prevent independent rotation during installation in the railcar truck frame and also a device to permit relocking or unlocking the independent axle rotation after the original safety pins have been removed. Dry lubricant coatings eliminate the need for periodic liquid lubrication or maintenance. The differential action of the wheelset reduces the horsepower requirement by approximately 30 percent while also reducing the maintenance requirements for both wheels and track in locations where horizontal curves are predominant.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: August 21, 2012
    Inventors: Thomas W. Blasingame, Robert E. Hord
  • Patent number: 8152672
    Abstract: A differential assembly includes an axle, a differential, a differential lock, a blocking member, and a pump. The differential is coupled with the axle and configured to facilitate operation of the axle at an axle speed. The differential lock is associated with the differential and movable between a locked position and an unlocked position. The blocking member is associated with the differential lock and is movable between a blocking position and a non-blocking position. When the blocking member is in the blocking position, the differential lock is inhibited from moving to the locked position. The pump includes an outlet in fluid communication with the blocking member. The pump is operably coupled with the axle and is configured to facilitate movement of the blocking member into the blocking position when the axle speed is above a threshold speed. Vehicles including a differential assembly are also provided.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: April 10, 2012
    Assignee: Honda Motor Company, Ltd.
    Inventors: Darin D. King, Daniel T. Sellars, Ryan J. Holoweiko, Jason W. Grundey
  • Patent number: 7650956
    Abstract: A vehicle drive control for a wheeled vehicle including a first motor generator, and a second motor generator. A planetary gear set includes a first rotating element connected to the first motor generator, a second rotating element connected to the second motor generator, and a third rotating element connected to a drive wheel. A rotation control mechanism selectively restricts rotation of one of the first and second rotating elements of the planetary gear set to establish a fixed speed ratio mode, and releases the one of the first and second rotating elements to establish a variable speed ratio mode. A control unit is configured to control each operating state of the rotation control mechanism, the first motor generator, and the second motor generator, and configured to establish the variable speed ratio mode when a slip state of the drive wheel is detected in the fixed speed ratio mode.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: January 26, 2010
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Takeshi Hirata, Tsuyoshi Yamanaka
  • Publication number: 20090253547
    Abstract: A device and a method for engaging and disengaging a longitudinal differential (10) disposed between a forward wheelshaft (4) and a rear wheelshaft (5) of an articulated vehicle (1) which has a front element (2) and a rear element (3) pivotable about a steering linkage (6) disposed between them and which comprises a distribution box (9) which supplies power from an engine (7) to the forward wheelshaft (4) in the front element (2) via a first shaft (11) and to the near wheelshaft (5) in the rear element (3) via a second shaft (12), wherein the longitudinal differential (10) is disposed between the first shaft (11) and the second shaft (12), whereby a steering angle v formed between the front element (2) and the rear element (3) is detected by a detection means (25a) so arranged that the detection means (25a) causes a differential brake (20) for the longitudinal differential (10) to be kept locked, or braked, when the detection means (25a) detects a steering angle v which is smaller than a predetermined steerin
    Type: Application
    Filed: May 30, 2007
    Publication date: October 8, 2009
    Inventor: Karl-Erik Niva
  • Patent number: 7493982
    Abstract: A control device for a four-wheel drive vehicle, including: a yaw moment control unit for selecting and applying to a wheel based on a driving state a braking force to generate vehicular yaw moment; a driving force control unit for identifying and reducing excess driving force based on the driving state; a limited slip differential control unit for limiting a front wheel differential; a front/rear driving force distribution control unit for controlling engagement torque of a clutch unit which varies front/rear torque distribution via a center differential; and a switch unit for selecting an operation/non-operation of the driving force control unit, wherein the front/rear driving force distribution control unit sets the engagement torque at a greater value when the yaw moment control unit operates while the driving force control unit is non-operating, than when the yaw moment control operates while the driving force control unit is operating.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: February 24, 2009
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventors: Junichi Kurosawa, Kouichi Inoue, Yoshiyuki Tanaka
  • Patent number: 7458437
    Abstract: In a four-wheel drive motor vehicle with a primary drive axle and a secondary drive axle, at least one secondary drive axle coupling of the limited slip type is provided in the powertrain between the engine of the vehicle and the secondary drive axle. A primary drive axle coupling of the limited slip type is provided for the primary drive axle.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: December 2, 2008
    Assignee: Haldex Traction AB
    Inventor: Per-Olof Davidsson
  • Publication number: 20080210483
    Abstract: A drive switching lever device for a vehicle for a vehicle in which a single control lever can operate both two-wheel-drive/four-wheel drive switching means and a differential lock on/off switching mechanism includes a bell crank swingably supported by a vehicle body side. A pull rod adapted to operate a switching lever of a two-wheel-drive/four-wheel-drive switching means is connected to a lever bracket and a control cable adapted to operate a switching lever of a differential lock on/off switching mechanism is connected to the bell crank. When a control lever is swung independently of the lever bracket, the bell crank is swung in engagement with the shaft portion of the control lever. The resulting configuration provides flexibility for the layout of the linkage between the control lever and the operating portion of each switching mechanism.
    Type: Application
    Filed: October 29, 2007
    Publication date: September 4, 2008
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Kosaku Takahashi, Masao Takeshima
  • Patent number: 7399250
    Abstract: In an all-wheel drive train for a motor vehicle wherein the drive torque of the engine of the motor vehicle is transmitted from the transmission output shaft partially to the rear axle and partially to the front axle via an offset transmission structure and a laterally arranged drive shaft extending from the offset transmission structure past the transmission to the front axle of the motor vehicle extends from the offset transmission forwardly at a certain opening angle in close proximity to the transmission structure which narrows down toward the rear so that the rear end of the lateral drive shaft is relatively close to the center axis of the transmission.
    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: 7384357
    Abstract: An electric drive unit for a vehicle includes an electric motor, two output shafts, a first speed reduction planetary gearset driven by the motor, a second speed reduction gearset driven by an output of the first gearset, and a compound planetary differential gearset including an input driveably connected to the output of the second gearset, a first differential output driveably connected to the first output shaft, and a second differential output driveably connected to the second output shaft.
    Type: Grant
    Filed: May 5, 2006
    Date of Patent: June 10, 2008
    Assignee: Ford Global Technologies, LLC
    Inventors: Steven G. Thomas, David A. Janson, Matthew D. Hammond
  • Patent number: 7147076
    Abstract: An off-road vehicle has front and rear wheels. An engine unit powers the wheels. The engine unit has an output shaft. A front differential is coupled with the front wheels. The front differential has a front input shaft. A front drive connects the output shaft and the front input shaft with each other. The front differential can operate in one of three modes: an unlocked mode, a locked mode and a disabled mode. A rear differential is coupled with the rear wheels. The rear differential mechanism has a rear input shaft. A rear drive connects the output shaft and the rear input shaft. The rear differential can operated in at least two modes: an unlocked mode and a locked mode. In one embodiment, the front differential is allowed to be locked only when the rear differential is locked.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: December 12, 2006
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Kazuhiko Izumi
  • Patent number: 6887177
    Abstract: A transfer arrangement for a four-wheel drive vehicle having an input shaft, a transmission, and a center differential. The transmission includes a first gear attached to the input shaft, a first counter gear attached to a countershaft in parallel with the input shaft to receive the rotation of the first gear, a second counter gear fixed to the countershaft and rotating therewith, and a second gear aligned with the input shaft and rotatably supported along the input shaft to receive the rotation of the second counter gear. High speed-side and low speed-side output parts are attached to the first and second gears respectively. The center differential is disposed between the high speed-side and low speed-side output parts. An engaging device disposed adjacent the center differential selectively engages with the high speed-side and low speed-side output parts.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: May 3, 2005
    Assignee: Suzuki Motor Corporation
    Inventor: Hiroaki Yamada
  • Patent number: 6619418
    Abstract: A dry friction device, in particular a clutch friction wheel or a brake disc for a motor vehicle, includes at least one friction liner made of a dry friction material containing reinforcing fibers. Such a friction material comprises a mat of fibers impregnated with a thermosetting resin, the fibers having a length of at least 40 mm. Glass fibers are preferably incorporated into the mat.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: September 16, 2003
    Assignee: Valeo
    Inventors: Richard Guerin, Gérard Jacq
  • Patent number: 6450915
    Abstract: A driving force transmitting device for a vehicle includes a drive mode-shifting mechanism which is disposed in the final drive gear-set of a vehicle. The drive mode-shifting mechanism includes a first rotating member, a second rotating member, a third rotating member, and a movable member. The movable member is movable between a first position in which the first and second rotating members are disconnected to effect the two-wheel-drive mode, a second position in which the first and second rotating members are connected to effect differential-free four-wheel-drive mode, and a third position in which the second and third rotating members are connected to effect the differential-lock four-wheel-drive mode.
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: September 17, 2002
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Masumi Kazaoka, Toru Kagata
  • Patent number: 6427797
    Abstract: A transmission structure of a gearbox of an electrically actuated car includes two front wheels, two rear wheels, and two gearboxes, wherein one gearbox is mounted between the two front wheels, and the other gearbox is mounted between the rear wheels. The transmission structure also includes a motor mounted between the two gearboxes. The motor has a power shaft having two distal ends each connected to a differential gear of each of the two gearboxes by means of a coupler, so as to form a four-wheel transmission mechanism.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: August 6, 2002
    Inventor: Hui-Lung Chang
  • Publication number: 20020070067
    Abstract: A differential limiting mechanism produces a changeable differential limiting torque. A differential limiting mechanism operating lever is disposed so as to be operated and turned by a hand gripping a handgrip attached to a handlebar. The operating lever is interlocked with the differential limiting mechanism so that the differential limiting torque varies according to an angle through which the operating lever is turned. A lever stopping mechanism stops the operating lever at an angular position for producing a predetermined maximum differential limiting torque.
    Type: Application
    Filed: December 6, 2001
    Publication date: June 13, 2002
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventor: Yuichi Kawamoto
  • Publication number: 20020066612
    Abstract: A wheel driving system is capable of varying differential limiting torque applied to a differential included in an all-terrain vehicle according to the difference between loads respectively applied to the right and the left wheel of the vehicle, which varies depending on the traveling condition or turning condition of the vehicle. Right and left wheels are connected through a differential gear mechanism (30) having a differential case (46) and held in a reduction gear case (13), an input pinion (22) and a drive shaft to an engine. The differential case (46) and a differential gear shaft (36) connected to the wheel are interlocked by a wet multiple-disk differential limiting mechanism (31) having a friction clutch mechanism immersed in oil. The multiple-disk differential limiting mechanism (31) is operated by a multiple-disk differential limiting mechanism operating mechanism to vary differential limiting torque.
    Type: Application
    Filed: December 4, 2001
    Publication date: June 6, 2002
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Yuichi Kawamoto, Haruo Kitai, Izumi Takagi, Hiroyuki Fujimoto
  • Publication number: 20020033293
    Abstract: A forward and aft torque distribution system and a method of controlling forward and aft torque distribution for a four-wheel vehicle having an electronically controlled clutch to control split of drive torque to be transferred to front and rear wheels are disclosed. A 4WD controller is responsive to mode selection signals from a mode changeover switch and a vehicle speed signal delivered from a vehicle speed sensor, and has control modes involving at least a LOCK mode and an AUTO mode. When the vehicle speed becomes less than a vehicle's halt discriminative vehicle speed indicative of a vehicle's halt state during the LOCK mode, the controller allows the electronically controlled clutch to be released.
    Type: Application
    Filed: August 21, 2001
    Publication date: March 21, 2002
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Yoshiyuki Fukuda, Norio Iida
  • Patent number: 6206128
    Abstract: In a working vehicle such as an agricultural tractor, a front wheel change speed device for transmitting drive to front wheels includes an equal speed clutch for driving the front wheels substantially at the same speed as rear wheels, and an accelerating clutch for driving the front wheels substantially at a higher speed than the rear wheels. In the front wheel change speed device of this invention, the equal speed clutch and accelerating clutch are arranged coaxially. The front wheel change speed device further includes a shift member axially shiftable for selectively operating the equal speed clutch and accelerating clutch, and an actuator for axially shifting the shift member.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: March 27, 2001
    Assignee: Kubota Corporation
    Inventors: Akio Hattori, Hidetaka Yoshioka, Satoshi Machida
  • Patent number: 6094132
    Abstract: A system for monitoring spinout conditions in a heavy vehicle driveline provides the ability to monitor the manner in which a driver operates a vehicle. For example, spin out conditions that occur with greater frequency than is normally expected indicates an inappropriate manner of operating the vehicle. Similarly, spinouts that have relatively excessive duration indicate inappropriate vehicle operation. The system includes a sensor device for detecting a spinout condition and a detector for detecting whether a differential lock has been engaged by the vehicle operator. An electronic controller gathers information from the sensor device and the detector and records information regarding each spinout including the frequency and duration. This information is then later provided to a service technician to determine whether the vehicle warranty provisions have been violated.
    Type: Grant
    Filed: January 6, 1999
    Date of Patent: July 25, 2000
    Assignee: Meritor Heavy Vehicle Systems, LLC
    Inventor: Dennis A. Kramer
  • Patent number: 6076623
    Abstract: A first power train (T1) for driving a pair of front drive wheels (Wf1, Wf2) comprises a transmission (4) connected to an engine (2) and a front drive train (41f) connected to the drive wheels, the front drive train including a final reduction gear (43), and a second power train (T2) for driving a pair of rear drive wheels (Wr1, Wr2) comprises a rear transfer train (11) branched from the first power train, between the transmission and the front drive train, and a rear drive train (41r) connected to the rear drive wheels.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: June 20, 2000
    Assignee: Tochigi Fuji Sangyo Kabushiki Kaisha
    Inventors: Masao Teraoka, Yasuhiko Ishikawa, Hiroyuki Tanaka
  • Patent number: 6070685
    Abstract: In a four wheel drive system for an automotive vehicle, a detected value .DELTA.V.sub.W of difference of rotating speed between the front and rear wheels is compared with a threshold .DELTA.V.sub.W0 determined in accordance with a pseudo vehicle speed V.sub.FF (S116, S213). As a result of this, when a determination is made that the pseudo vehicle speed V.sub.FF is in a directly connecting four wheel drive condition inhibiting range, a directly connecting four wheel drive condition inhibiting signal S.sub.N is sent out (S121), so that a front wheel side torque distribution instruction value T.sub.2 is determined as a value preventing the directly connecting four wheel drive condition. Thereby, in case of using of the different diameter wheel, a deterioration of stability and an increase of load of power train system caused by the directly connecting four wheel drive condition can be prevented.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: June 6, 2000
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Toshiharu Takasaki, Tomoyuki Hara
  • Patent number: 5902205
    Abstract: A transfer case for a four-wheel drive vehicle having a planetary gear assembly which integrates a gear reduction unit and an interaxle differential into a common assembly. A synchronized range clutch is operably associated with the input to the planetary gear assembly and can be selectively shifted on-the-fly for establishing high-range and low-range speed ratios. A biasing clutch is operably associated with the output of the planetary gear assembly to automatically limit speed differentiation and bias the torque distribution between the outputs of the planetary gear assembly in response to excessive wheel slip.
    Type: Grant
    Filed: December 15, 1997
    Date of Patent: May 11, 1999
    Assignee: New Venture Gear, Inc.
    Inventor: Randolph C. Williams
  • Patent number: 5813490
    Abstract: In a four wheel drive system for an automotive vehicle, a detected value .DELTA.V.sub.W of difference of rotating speed between the front and rear wheels is compared with a threshold .DELTA.V.sub.W0 determined in accordance with a pseudo vehicle speed V.sub.FF (S16, S213). As a result of this, when a determination is made that the pseudo vehicle speed V.sub.FF is in a directly connecting four wheel drive condition inhibiting range, a directly connecting four wheel drive condition inhibiting signal 8.sub.N is sent out (S121), so that a front wheel side torque distribution instruction value T.sub.2 is determined as a value preventing the directly connecting four wheel drive condition. Thereby, in a case where different diameter wheels are used, a deterioration of stability and an increase of load of power train system caused by the directly connecting four wheel drive condition can be prevented.
    Type: Grant
    Filed: September 21, 1995
    Date of Patent: September 29, 1998
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Toshiharu Takasaki, Tomoyuki Hara
  • Patent number: 5609540
    Abstract: A power transfer system for a four-wheel drive vehicle having a full-time transfer case with its input angled relative to its outputs by means of a constant velocity (CV) universal joint. More specifically, the transfer case input includes a first rotary member adapted to be rotatably driven about the rotary axis of the transmission output shaft, a second rotary member supported for rotation about a second rotary axis that is angled relative to the first rotary axis, and a CV joint interconnecting the first and second rotary members. The transfer case outputs include a pair of rotary output members supported for relative rotation about a common third rotary axis that is offset from the second rotary axis. A torque transfer arrangement is provided for transferring torque from the transfer case input to its outputs. The CV joint allows the transfer case to be angulated so that reduced departure angles are achieved with respect to the prop shaft connections.
    Type: Grant
    Filed: August 17, 1995
    Date of Patent: March 11, 1997
    Assignee: New Venture Gear, Inc.
    Inventors: James S. Brissenden, John D. Zalewski
  • Patent number: 5597369
    Abstract: A transfer case for a four-wheel drive vehicle adapted to provide two- to four-wheel drive on-demand in the high range or four-wheel drive in the low range. The transfer case includes an input shaft coupled to the sun gear of a planetary gear set, a main drive shaft, a first output and a second output. Provided in fixed association with the main drive shaft is a viscous fluid coupling chamber, and associated with the chamber is a drive sprocket. A range clutch sleeve and locking clutch assembly is slidably disposed on the main drive shaft between the planetary gear set and the rotary member for selectively providing two- to four-wheel on-demand high range power, neutral, and four-wheel drive low range power. Inner and outer relatively rotational drum housings surround the aft end of the main drive shaft for defining an annular viscous fluid coupling chamber therebetween.
    Type: Grant
    Filed: September 12, 1994
    Date of Patent: January 28, 1997
    Assignee: New Venture Gear, Inc.
    Inventors: James S. Brissenden, Robert J. Wilson, Sanjeev K. Varma
  • Patent number: 5366041
    Abstract: A four-wheel drive vehicle control system has a differential mode control device which operates in at least a first mode, in which differential action of a differential is variably restricted between an unlocked state and a locked state according to driving conditions, and a second mode, in which the differential is forcibly locked. The first and second modes are manually selected by the driver.
    Type: Grant
    Filed: June 29, 1992
    Date of Patent: November 22, 1994
    Assignee: Mazda Motor Corporation
    Inventors: Masaru Shiraishi, Yuji Tashiro
  • Patent number: 5271478
    Abstract: A power transmitting system for a vehicle includes a rotatable input shaft for introducing driving power into the system, a rotatable first output shaft for transmitting the driving power from the system, and a rotatable second output shaft for also transmitting the driving power from the system. A transmitting member is rotatably mounted on the first output shaft and for rotating the second output shaft, a clutch mechanism is disposed adjacent to the transmitting member and mounted on the first output shaft for engaging the transmitting member with the first output shaft. An actuator is provided for actuating the clutch mechanism. A compact power transmitting system can be obtained.
    Type: Grant
    Filed: February 25, 1991
    Date of Patent: December 21, 1993
    Assignees: Mazda Motor Corporation, Tochigi Fuji Sangyo Kabushiki Kaisha
    Inventors: Osamu Kameda, Hideo Toyota
  • Patent number: 5183132
    Abstract: A power transfer device having a center differential gear unit for use in a four-wheel drive vehicle of part time four-wheel drive type of the present invention comprises: an intermediate shaft which is rotatably provided around a rotary shaft, which rotary shaft is driven to transmit the driving power of an engine and connected with one of the output elements of the center differential gear unit, and which is detechably connected with the rotary shaft through the first clutch mechanism; and an output shaft which is rotatably provided around the intermediate shaft and detachably connected with the intermediate shaft through the second clutch mechanism having a synchro-mesh unit, wherein the transmission can be optionally changed over among the two-wheel drive state in which the center differential gear unit is locked, the four-wheel drive state in which the center differential gear unit is locked, and the four-wheel drive state in which the center differential gear is released, by moving the sleeve in the fir
    Type: Grant
    Filed: November 6, 1990
    Date of Patent: February 2, 1993
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventor: Mutsumi Fujisawa
  • Patent number: 5105900
    Abstract: The present invention provides a motor vehicle cold shift assist system for selectively and automatically connecting the non-driven wheels to its associated axle drive mechanism under certain operational and temperature conditions for counteracting the inertial loading acting on the transfer case synchronizer clutch mechanism. The present invention substantially reduces the shift resistance encountered upon the vehicle operator subsequently shifting into the four-wheel drive mode during cold weather conditions.
    Type: Grant
    Filed: December 7, 1990
    Date of Patent: April 21, 1992
    Assignee: New Venture Gear, Inc.
    Inventors: Randy W. Adler, David Sperduti
  • Patent number: 5105902
    Abstract: The present invention provides a motor vehicle cold shift assist system for selectively actuating an axle connecting mechanism to automatically connect the non-driven wheels to its associated axle drive mechanism immediately following synchronization for counteracting the inertial loading acting on the transfer case synchronizer clutch mechanism. The axle connecting mechanism is actuated prior to the transfer case being locked in the four-wheel drive mode. As such, the present invention substantially reduces the shift resistance and gear clash encountered upon the vehicle operator shifting into the four-wheel drive mode during cold weather conditions.
    Type: Grant
    Filed: December 7, 1990
    Date of Patent: April 21, 1992
    Assignee: New Venture Gear, Inc.
    Inventors: Robert J. Wilson, Randolph C. Williams
  • Patent number: 5086867
    Abstract: To simplify propeller shaft supporting structure and to reduce propeller shaft vibration when a viscous coupling and a clutch mechanism are both provided on a propeller shaft of a 4WD vehicle, the power transmission apparatus comprises a housing rotatably supported to receive power; a differential gear disposed on one side of and within the housing; a viscous coupling disposed on the other side of and within the housing; and a clutch for transmitting power from the housing to the differential gear via the viscous coupling when engaged, and transmitting no power from the housing to the differential gear when disengaged.
    Type: Grant
    Filed: July 6, 1989
    Date of Patent: February 11, 1992
    Assignee: Tochigifujisangyo Kabushiki Kaisha
    Inventors: Isao Hirota, Masao Teraoka, Sakuo Kurihara, Mitsuru Hasegawa
  • Patent number: 5083478
    Abstract: A four-wheel vehicle drive system, comprising an engine having an output shaft in a lateral direction of the vehicle, a power transmission gear unit including transmission input and output shafts having axes of rotation parallel with the engine output shaft, a final reduction gear rotatable about an axis parallel with the transmission input and output shafts, the transmission output shaft being in driving engagement with the final reduction gear, a gear housing rotatable with the final reduction gear, a main transaxle casing having enclosed therein the transmission gear unit, final reduction gear and gear housing, an auxiliary transaxle casing secured to the main transaxle casing, a first wheel drive gear unit to split driving power from the final reduction gear into two components and including a differential gear assembly enclosed in the auxiliary transaxle casing and operative to transmit one of the power components to a pair of road wheels, a second wheel drive gear unit enclosed in the auxiliary transaxl
    Type: Grant
    Filed: July 21, 1982
    Date of Patent: January 28, 1992
    Assignee: Nissan Motor Company, Limited
    Inventor: Kazuyoshi Hiraiwa
  • Patent number: 5078660
    Abstract: A transfer case for a four wheel drive vehicle providing a central shaft defining a first output concentrically surrounded by a forward high/low drive range gear set and an aft dual planetary inter-axle differential gear set. A range clutch collar is disposed between the gear sets for selectively providing four wheel drive low range, neutral, and full-time four wheel drive high range. Likewise, a mode sleeve is disposed between the gear sets for selectively locking the differential gear set when the vehicle is shifted into its four wheel low range. Inner and outer relatively rotational drum housings surrounded the aft dual planetary differential gear set for defining an annular viscous fluid coupling chamber therebetween.
    Type: Grant
    Filed: April 23, 1991
    Date of Patent: January 7, 1992
    Assignee: New Venture Gear, Inc.
    Inventors: Randolph C. Williams, Richard E. Eastman, S. K. Varma
  • Patent number: 5046576
    Abstract: A control system for a four-wheel drive vehicle with a continuously variable transmission having a drive pulley having a hydraulically shiftable disc and a hydraulic cylinder for operating the disc, a driven pulley having a hydraulically shiftable disc and a hydraulic cylinder, and a pressure regulator valve for regulating pressure of oil supplied to the hydraulic cylinders. A hydraulic actuator is provided for engaging a transfer clutch for establishing four-wheel driving. The pressure regulator valve has a pressure level changing port to increase the pressure of oil supplied to the cylinders. A solenoid operated valve is provided for supplying the oil regulated by the pressure regulator valve to the hydraulic actuator and to the pressure level changing port or for draining the actuator and the port. An orifice is provided in an inlet side of the solenoid operated valve.
    Type: Grant
    Filed: October 11, 1989
    Date of Patent: September 10, 1991
    Assignee: Fuji Juokogyo Kabushiki Kaisha
    Inventor: Motohisa Miyawaki
  • Patent number: 5005663
    Abstract: A vehicle equipped with four-wheel drive has a transfer case including a center-differential which delivers driving power to both front and rear axle assemblies when needed and is shiftable between a two-wheel and a four-wheel drive mode of operation and between a differential-locked and a differential-unlocked drive mode of operation. A free wheeling drive mechanism with a clutch member is incorporated in an output shaft of an axle differential in association with wheels non-driven in the two-wheel drive mode of operation and is adapted to disconnect when the vehicle is in the two-wheel drive mode of operation. A controller causes a forced drive mode shift of the center-differential from the four-wheel differential-underlined drive mode of operation either to the four-wheel differential-locked or to the two-wheel drive mode of operation when the disconnection of the free-wheeling drive mechanism is detected while the vehicle is in the four-wheel differential-unlocked drive mode of operation.
    Type: Grant
    Filed: October 27, 1988
    Date of Patent: April 9, 1991
    Assignee: Mazda Motor Corporation
    Inventors: Kazuo Niide, Hideki Yamada, Haruki Higashi, Noboru Nakamura
  • Patent number: 4915191
    Abstract: A transfer device for a four-wheel drive vehicle has a transfer shaft rotatably mounted by first and second bearings and a transfer gear rotatably mounted on the transfer shaft between the bearings. A coupling device is provided outside the first bearing for engaging the transfer gear with the transfer shaft, and a bevel gear is secured to the transfer shaft at a portion outside of the second bearing.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: April 10, 1990
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventor: Takao Kotajima
  • Patent number: 4909345
    Abstract: A power transmission device for four wheel drive vehicle includes a differential motion limiting device, for limiting differential motion of a center differential device, which is made up by a wet-type frictional clutch and a hydraulic actuator. Under running condition, the frictional clutch is engaged by certain engaging force, and considering frictional coefficient of roads, the clutch is engaged with some slips so that torque distribution to front and rear wheels becomes even (50:50), then torque is distributed from the center differential device to front and rear wheels. The line pressure is applied to the hydraulic actuator through a regulator valve. In normal running condition, the regulator valve reduces the line pressure pre certain ratio, the reduced pressure is applied to the hydraulic actuator. In the case the manual valve being shifted to R range or low speed position, the regulator valve is switched to apply the line pressure directly to the hydraulic actuator.
    Type: Grant
    Filed: September 28, 1988
    Date of Patent: March 20, 1990
    Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Tatsuya Iwatsuki, Takenori Kano, Fumitomo Yokoyama, Yasunari Nakamura, Isamu Minemoto, Teruo Akashi, Masaharu Tanaka, Seitoku Kubo
  • Patent number: 4907473
    Abstract: A differential mechanism of a four-wheel driving apparatus for vehicles has a planetary gear and transmits the driving torque from an input shaft to a front wheel driving shaft and a rear wheel driving shaft in a distributing manner. The differential mechanism includes a first spline rotated by the driving torque from the input shaft, a second spline connected so as to the integrally rotated with a sun gear of the differential planteary gear, a third spline connected so as to be integrally rotated with a carrier, fourth spline formed on an outer circumferential surface of the ring gear, and a differential change sleeve mounted in an outward radial direction from the first spline to the fourth spline for axially sliding between two positions, one position for connecting first and fourth splines, and the other position for connecting first, second and third splines.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: March 13, 1990
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Yuuki Fujitani, Kouji Kawakami
  • Patent number: 4898259
    Abstract: A full-time four-wheel drive apparatus for an automotive vehicle includes a planetary gear unit for shifting purposes, a shift changeover unit, a differential unit and a transfer unit for transferring rotating power from the rear-wheel side to the front-wheel side or vice versa. The shift changeover unit is arranged on the side of said planetary gear unit directed to the input shaft of the four-wheel drive apparatus, the carrier of the planetary gear unit is connected to the output shaft of the four-wheel drive apparatus, the differential unit is arranged between the planetary gear unit and the transfer unit, and a rotating force outputted by the planetary gear unit is transferred to the rear-wheel side and front-wheel side. Fluxure force exerted on a main shaft caused by the transfer unit based on a chain is eliminated and axial length of the apparatus is reduced.
    Type: Grant
    Filed: March 29, 1988
    Date of Patent: February 6, 1990
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Yuuki Fujitani, Kouji Kawakami
  • Patent number: 4878399
    Abstract: A planetary sub-transmission for a vehicle has a planetary gear unit with a carrier member fixedly mounted on an output shaft, a sun gear mounted on the output shaft for rotation, and a ring gear fixedly supported by the sub-transmission case. A remotely operable shift member supported by an input shaft for axial movement selectively couples the input shaft to the output shaft, either directly or through the sun gear of the planetary unit, to shift the sub-transmission between high speed and low speed drive ranges.
    Type: Grant
    Filed: September 29, 1987
    Date of Patent: November 7, 1989
    Assignee: Mazda Motor Corporation
    Inventor: Osamu Kameda
  • Patent number: 4876919
    Abstract: In combination with a power transfer device, a power transmission includes a first shaft rotatably mounted within a housing and having an input end for connection to an output shaft of the transmission and an output end for drive connection to a pair of rear road wheels, a second shaft rotatably mounted within the housing in parallel with the first shaft for drive connection to a pair of rear road wheels, a drive member rotatable on the first shaft, a driven member mounted on the second shaft for rotation therewith and being drivingly connected to the drive member, a limited-clip differential in the form of viscous clutch coupling having an outer casing mounted on the first shaft for rotation therewith and coupled in a liquid-tight manner with an inner sleeve rotatably on the first shaft for defining a viscous fluid chamber and for relative rotation thereto, and a clutch sleeve axially movably mounted on a hub portion of the drive member for rotation therewith and shiftable between a first position where it i
    Type: Grant
    Filed: July 25, 1988
    Date of Patent: October 31, 1989
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shuji Nagano, Masaki Inui