Torque Responsive Patents (Class 74/337)
  • Patent number: 10059200
    Abstract: A magnetically stabilized propshaft bearing system includes a bracket having a bearing receiving zone, an isolator arranged in the bearing receiving zone, and a propshaft bearing arranged in the bearing receiving zone and supported by the isolator. The propshaft bearing is receptive to rotatably support a propshaft for a vehicle. An electromagnet is mounted in the bracket surrounding a portion of the bearing. The electromagnet is selectively activated to shift the propshaft bearing within the bearing receiving zone.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: August 28, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Glenn Meinhardt
  • Patent number: 9657835
    Abstract: A gear moving assembly includes: a tubular shaft having a hollow portion formed therein; a sliding unit including: a base disposed in the hollow portion of the shaft, and a plurality of sliders including respective rods that are disposed in the respective sliding channels to be slidable relative to the shaft in the longitudinal direction; a plurality of movable gears disposed around a circumferential surface of the shaft to be movable relative to the shaft in the longitudinal direction, and provided to correspond to the respective sliders; and a plurality of interlocking units configured to connect the sliders to the corresponding movable gears so that sliding of each of the sliders is independently interlocked with movement of the corresponding movable gear. A transmission includes the gear moving assembly.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: May 23, 2017
    Inventor: Eun-Su Han
  • Patent number: 8984977
    Abstract: A transmission generally includes a shaft member having a cylindrical outer surface in which longitudinal grooves are formed. Rolling members are disposed in the longitudinal grooves. A gear member having lobes the lobes is disposed between the rolling members and over the shaft member. A clutch spring that at least partially encircles the rolling members and the lobes is also disposed. The clutch spring includes a reduced torque condition that at least defines the clutch spring stretching to accommodate the rolling members leaving the longitudinal grooves and moving to the outer cylindrical surface such that the clutch spring forms a generally elliptical shape in the reduced torque condition.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: March 24, 2015
    Assignee: Black & Decker Inc.
    Inventors: Thomas J. Bodine, Barry E. Plato, Kevin S. Agan, Joao Norona
  • Patent number: 8826759
    Abstract: An actuating apparatus for actuating a shifting mechanism in a transmission to shift a gear wheel on a hollow shaft with an actuator module that is at least partially positioned within the hollow shaft and which comprises an actuator which can be connected with a coupling element of the shift mechanism which radially, inwardly extends into the inner diameter of the hollow shaft. The enclosure of the actuator module has at least an axially extending assembly passageway which guides the coupling element, during axial insertion of the actuator module into the hollow shaft. A method for the assembly and disassembly of an actuator module, with at least one actuator of an actuating apparatus for inside actuation of a shift mechanism on the hollow shaft. The actuator module is axially inserted into the hollow shaft and rotated via an assembly guide.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: September 9, 2014
    Assignee: ZF Friedrichshafen AG
    Inventors: Matthias Reisch, Gerhard Gumpoltsberger
  • Patent number: 8789435
    Abstract: A cam self-adaptive automatic speed shift hub comprises a left hub frame (7), a right hub frame (18), a case body (4), a power input device, a drive shaft (1), a wheel (14) and a brake device (20). The hub further includes a low-gear drive shaft (12), a low-gear transmission mechanism positioned on the low-gear drive shaft (12), and a cone-disc clutch cam self-adaptive speed shift assembly positioned on the drive shaft (1), in which the low-gear drive shaft (12) positioned in the case body (4) is in rotation fit with the case body (4) and in parallel with the drive shaft (1). Such a cam self-adaptive automatic speed shift hub can allow the motor/engine output power and vehicle running condition always in an optimal matching state, to achieve balance control between the vehicle driving torque and the comprehensive driving resistance.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: July 29, 2014
    Assignee: Southwest University
    Inventors: Rongsheng Xue, Yupei Lin, Yunzhi Hao
  • Publication number: 20130228027
    Abstract: The present invention is capable of suppressing gear shift shocks or delays in acceleration with no interruption of driving force and reducing the weight. Disclosed is a transmission which is provided, with multiple stage shift gears so arranged to shift a number of dog clutches to shift a gear to the upper stage of the multiple stage shift gears, and is characterized in that a guide part is provided to a shift operation section and the dog clutches on each of the sages so as to move the lower dog clutch in a neutral direction by a coasting torque acting on the lower stage by a shift rotation of the upper stage to release a meshing engagement when meshing engagements of the lower and upper dog clutches are simultaneously performed by an operation of the shift operation section.
    Type: Application
    Filed: November 4, 2011
    Publication date: September 5, 2013
    Applicant: IKEYA FORMULA CO., LTD.
    Inventors: Shinji Ikeya, Masao Teraoka
  • Patent number: 8347750
    Abstract: A transmission generally includes a shaft member having a continuous cylindrical surface portion longitudinally disposed next to a cylindrical outer surface portion interrupted by longitudinal grooves. A first gear assembly has a first clutch spring that holds a first set of rolling members between lobes that extend from a first output gear. A second gear assembly has a second clutch spring that holds a second set of rolling members between lobes that extend from a second output gear. The first gear assembly and the second gear assembly are configured to move longitudinally along the shaft member to a position where at least one of the first gear assembly and the second gear assembly is engaged for rotation with the shaft member when a value of torque at the shaft member is below a torque threshold value.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: January 8, 2013
    Assignee: Black & Decker Inc.
    Inventors: Thomas J. Bodine, Barry E. Plato, Kevin S. Agan, Joao Norona
  • Patent number: 8281680
    Abstract: A power-augmenting gear structure for an electric car includes a low-speed and power-augmenting transmitting route additionally installed in a gear case, with an output shaft of an electric motor extending in the gear case. The gear case has transmission gears forming conventional normal speed transmitting routes with normal speed reducing ratio for running on common flat roads, and a low-speed and power-augmenting transmitting route to be used in case of moving up an upward slope or coping with a condition needing a large torque. Then the electric motor may be reduced in its size, weight and cost, without necessity of enlarging it to have a large power.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: October 9, 2012
    Assignee: Aeon Motor Co., Ltd.
    Inventors: Hui-Hui Huang, Alex Lin, Jeff Wang, Weily Chen
  • Patent number: 8167774
    Abstract: A process for controlling a twin clutch transmission with two partial drive trains with respectively a friction clutch interposed between an internal combustion engine and the partial drive train is provided. If the transmission capacity of a friction clutch falls below the engine torque, engine intervention takes place. If the clutch temperature rises further above a default value, an emergency operation is initiated, in which the affected partial drive train is deactivated by opening the affected friction clutch, a preselection strategy used in the other partial drive train is changed and the other partial drive train is activated.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: May 1, 2012
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Gerd Jaeggle, Juergen Eich
  • Patent number: 7963183
    Abstract: An apparatus for controlling a sequential transmission of a vehicle is provided comprising a control motor that drives a selector drum for shifting gears wherein the apparatus measures torque applied to or position of the selector drum and controls the control motor to engage the gears, to accommodate for wear and transient gear interference or jamming.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: June 21, 2011
    Inventors: Dean Pick, Thomas Dowad
  • Patent number: 7853413
    Abstract: A method for determining at least one characteristic value, especially of a suspended driven axis of a machine, is provided, the axis being driven by a rotating drive unit and/or by a linear drive unit. A torque or a force corresponding to the torque acting on the drive unit is measured along a predetermined movement path of the axis. The torque or the force is measured in the forward direction and reverse direction. Energy-conserving moments or energy-conserving forces on the one hand and/or friction-dependent moments or friction-dependent forces on the other hand are determined by computational overlaying of associated torque or force values as the at least one direction-independent characteristic value.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: December 14, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventors: Christian Haberl, Ewald Lehmann, Joachim Ullrich
  • Patent number: 7806013
    Abstract: The invention relates to a regulating mechanism for operating an actuator or connecting element (11, 12) of an automatic transmission. The regulating mechanism has an actuator (3), a regulating mechanism (4), a transmission element (6), and an output element (8, 9). According to the present invention, the actuator (3) is configured as a three phase motor, advantageously as an asynchronous motor. The torque (M) of the actuator (3) is converted into an actuating force (S) in the transmission element (6), which is then applied to a regulated and or connecting element (11, 12).
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: October 5, 2010
    Assignee: ZF Friedrichshafen AG
    Inventors: Bernd Schepperle, Eckhardt Lübke, Karl-Hermann Ketteler, Andreas Fuessl
  • Patent number: 7801657
    Abstract: A control system for a vehicle having first and second wheels is provided that includes a differential apparatus adapted to distribute torque between the first and second wheels and a traction controller for controlling operation of the differential apparatus from vehicle launch up to a predetermined vehicle speed. The traction controller is configured to engage the differential apparatus in a first operating state according to at least one vehicle operating parameter indicative of a low traction operating condition and to further control engagement of the differential apparatus in a second vehicle operating state during the low traction operating condition according to a difference between an actual vehicle yaw rate and a predetermined target vehicle yaw rate. The control system also includes a stability controller for controlling engagement of the differential apparatus at or above the predetermined vehicle speed.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: September 21, 2010
    Assignee: Eaton Corporation
    Inventors: Damrongrit Piyabongkarn, Jae Y. Lew, John A. Grogg, Robert J. Kyle
  • Patent number: 7793560
    Abstract: A transmission generally includes a shaft member having a continuous cylindrical surface portion longitudinally disposed next to a cylindrical outer surface portion interrupted by longitudinal grooves. A first gear assembly has a first clutch spring that holds a first set of rolling members between lobes that extend from a first output gear. A second gear assembly has a second clutch spring that holds a second set of rolling members between lobes that extend from a second output gear. The first gear assembly and the second gear assembly are configured to move longitudinally along the shaft member to a position where at least one of the first gear assembly and the second gear assembly is engaged for rotation with the shaft member when a value of torque at the shaft member is below a torque threshold value.
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: September 14, 2010
    Assignee: Black & Decker Inc.
    Inventors: Thomas J. Bodine, Barry E. Plato, Kevin S. Agan, Joao Norona
  • Patent number: 7698041
    Abstract: A drive unit includes an engine and a transmission having a variable transmission ratio. An instantaneous setpoint power output quantity of the drive unit is determined from an intended power output. The setpoint power output quantity is a function of the instantaneous transmission ratio of the transmission at least for a given intended power output.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: April 13, 2010
    Assignee: Robert Bosch GmbH
    Inventor: Martin Streib
  • Patent number: 7669496
    Abstract: A driving force transmission apparatus has a driving gear; a driven gear; a toothed clutch transferring the driving force from driving gear to driven gear and which includes driving-side and driven-side ratchets that are movable in the axial direction of the clutch; and a compression spring biasing driven-side ratchet toward driving-side ratchet. When the tip end of the pawl of the driven-side ratchet is at the same position as the tip end of the pawl of the driving-side ratchet in the axial direction of the toothed clutch, the compression spring biasing force acts on the driven-side ratchet. And when the driven-side ratchet fully engages the driving-side ratchet, the biasing force does not act on the driven side ratchet.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: March 2, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoshikazu Takahashi
  • Publication number: 20090071671
    Abstract: A power tool comprising a housing, a motor, an output shaft, a gear transmission mechanism and a control system. The gear transmission mechanism is connected between the motor and the output shaft to transmit the rotary power of the motor to the output shaft. The gear transmission mechanism has a high speed position and a low speed position. The control system is coupled to the gear transmission mechanism for detecting an operating characteristic of the power tool to actuate a ring gear to automatically move from the high speed position to the low speed position and to reduce the rotational speed of the ring gear when the operating characteristic exceeding a predetermined value.
    Type: Application
    Filed: August 26, 2008
    Publication date: March 19, 2009
    Applicant: Positec Power Tools (Suzhou) Co., Ltd.
    Inventors: Hongfeng Zhong, Gianni Borinato, Shisong Zhang, Chengzhong Chen, Paolo Andriolo, Fangshi Liu, Kelvin Wong, Warren Brown
  • Publication number: 20090038425
    Abstract: An automated shift control device suppresses overload of the shift motor and reduces the time from beginning to completion of a gear shifting operation. A transmission has a plurality of pairs of speed change gears and a gear selecting mechanism. A shift motor drives the gear selecting mechanism. A shift power transmission mechanism transmits power from the shift motor to the gear selecting mechanism. A torque limiter has a third reduction gear and a third shaft forming a part of the shift power transmission mechanism. The torque limiter transmits power from the shift motor as torque. When the transmitted torque is not more than a predetermined limit torque, the third reduction gear co-rotates with the third shaft. When the transmitted torque exceeds the predetermined limit torque, the third reduction gear rotates relative to the third shaft to limit the transmitted torque to the predetermined limit torque or less.
    Type: Application
    Filed: July 23, 2008
    Publication date: February 12, 2009
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Yoshihiko Takeuchi
  • Patent number: 7412316
    Abstract: In a method for setting the clutch torque of a clutch, especially a clutch disposed in a drive train of a motor vehicle, the clutch is adjusted using a clutch actuator. This clutch actuator has at least two actuator parts that may be positioned relative to each other at raster values of a position raster. A position setpoint corresponding to a clutch torque and disposed between the raster values of the position raster is calculated, and the actuator parts are positioned relative to each other at a raster value of the position raster that is adjacent to the position setpoint. In addition to the first position raster value, a second position raster value is calculated in such a manner that the position setpoint is disposed between the first position raster value and the second position raster value.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: August 12, 2008
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Juergen Gerhart, Olaf Werner, Georg Goeppert
  • Patent number: 7140551
    Abstract: An HVAC controller with a simplified and/or lower cost user interface. In one illustrative embodiment, the HVAC controller includes two switches, a movable member, and a plurality of detents. The detents are configured to cause the two switches to be switched in a sequence when the movable member is moved. In some cases, a controller is coupled to the two switches, and may change an HVAC control parameter based on the switch sequence.
    Type: Grant
    Filed: March 1, 2004
    Date of Patent: November 28, 2006
    Assignee: Honeywell International Inc.
    Inventors: Jurianus de Pauw, Joseph E. Oberdorf, Antonius A. M. Smets, Mark W. Peterson
  • Patent number: 7086301
    Abstract: A vehicle transmission has a first torque transmission path for transmitting a torque from the engine to an output shaft of the transmission through a first input shaft of the transmission, a first pair of gears and a first mesh type clutch. A second torque transmission path transmits a torque from the engine to the output shaft through the first input shaft, a second pair of gears and a second mesh type clutch. A third torque transmission path transmits a torque from the engine to the output shaft through a second input shaft of the transmission, a friction clutch disposed between the second input shaft and the engine, a third pair of gears and a third mesh type clutch. The torque transmission path from the engine to the output shaft shifts in order of the first torque transmission path, the third torque transmission path, and the second torque transmission path. When the torque is transmitted through the third torque transmission path, a torque at the first input shaft is controlled.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: August 8, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Sakamoto, Toshimichi Minowa, Takashi Okada, Mitsuo Kayano, Tatsuya Ochi
  • Patent number: 7080569
    Abstract: A powershift transmission is proposed using two transmission paths, a friction clutch being assigned to each transmission path and the transmission paths being coupleable to an output shaft for torque transmission. The transmission has a device that detects the clutch torque transmitted by the friction clutch of the active transmission path, which is coupled to the output shaft, and, when the clutch torque falls below threshold value, initiates a disengagement of the active gear ratio.
    Type: Grant
    Filed: May 21, 2004
    Date of Patent: July 25, 2006
    Assignee: Luk Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Marian Preisner, Jürgen Benz, Reinhard Berger, Dietmar Lang, Alexander Schweizer, Olaf Werner
  • Patent number: 6881169
    Abstract: A transmission with an automatic clutch is arranged to execute a shift operation by disconnecting a transmission input shaft from an output shaft of a power source and operating one of coupling sleeves so as to establish a desired transmission ratio. The transmission is comprised of a bypass driveline. During this shift operation, the bypass driveline becomes operative and transmits a power of the power source to a transmission input shaft while bypassing the automatic clutch.
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: April 19, 2005
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Takeji Katakura
  • Patent number: 6846260
    Abstract: In an automatic transmission having a torque converter with a pump impeller, a turbine runner, and a stator, a stator shaft is provided to support the stator on its outer periphery and to rotatably support a transmission input shaft on its inner periphery. A magnetostrictive torque sensor is provided to detect the magnitude of input torque transmitted to the transmission input shaft. The magnetostrictive torque sensor includes a magnetic material having a magnetostrictive property and attached onto the outer periphery of the transmission input shaft, and a cylindrical magnetic-property detector mounted on the inner periphery of the stator shaft and arranged to be opposite to the magnetic material to detect a change in a magnetic property of the magnetic material, occurring owing to the input torque applied to the transmission input shaft.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: January 25, 2005
    Assignee: JATCO Ltd
    Inventor: Tomofusa Horiuchi
  • Patent number: 6729198
    Abstract: There is provided a method of controlling the operation of a multispeed gearbox which is associated with a start-up clutch, at least one power shift clutch, shift clutches for shifting into various speeds of the gearbox and with a control unit for controlling the actuation of at least one of the clutches. The method comprises the step of controlling the coefficient of friction of the at least one clutch during operation of the gearbox.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: May 4, 2004
    Assignee: Luk Lamellen und Kupplungsbau GmbH
    Inventor: Martin Brandt
  • Patent number: 6711964
    Abstract: A control device for an automatic transmission has a torque transmission provided between an input shaft and an output shaft of a gear-type transmission The torque transmission in at least one change gear stage is a friction clutch. When performing a change gear from one change gear stage to another change gear stage, the friction clutch is controlled. A transfer torque capacity detector detects or computes transfer torque of the friction clutch when performing a change gear to a predetermined change gear stage, and a clutch release timing determining apparatus determines a timing when releasing the claw-type clutch into a neutral state based on the value detected or computed by the torque capacity detector.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: March 30, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuya Ochi, Toshimichi Minowa, Takashi Okada, Mitsuo Kayano, Hiroshi Sakamoto
  • Patent number: 6619151
    Abstract: A transmission comprising: an input shaft, to which a power is transmitted from a prime mover; an output shaft for outputting the power to drive wheels; and a plurality of transmission mechanisms of different gear ratios for transmitting the power between the input shaft and the output shaft. A two-way clutch capable of switching a torque transmitting direction into a forward direction and a backward direction is interposed between at least any of the transmission mechanisms and the input shaft or the output shaft, and a select mechanism is provided for selecting the torque transmitting direction of the two-way clutch.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: September 16, 2003
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hiroyuki Shioiri
  • Patent number: 6588291
    Abstract: A control current is converted into an activation pressure for a transmission actuator by a pressure regulating valve. Both a control current at a given time and the activation pressure at the given time are fed back to a regulator. A setpoint value for the activation pressure in a partial range of a torque to be transmitted is converted by the regulator into the control current in dependence on the control current at the given time and otherwise as a function of the activation pressure at a given time. The current measuring device for determining the control current at the given time is adjusted here in such a way that a high resolution is obtained in the partial range.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: July 8, 2003
    Assignee: Siemens Aktiengesellschaft
    Inventor: Bernd Last
  • Patent number: 6581488
    Abstract: A control device for a actuator applied in a transmission includes a maximum electric current value detecting device that detects a maximum electric current value supplied to the actuator. The maximum electric current value detecting device includes a determining unit, an electric current supplying unit, a detecting unit, and a setting unit. The determining unit determines a target electric current value supplied to the actuator, the electric current supplying unit supplies electric current to the actuator on the basis of the target electric current value determined by the determining unit, the detecting unit detects the maximum electric current value actually supplied to the actuator independently of the target electric current value determined by the determining unit, and the setting unit sets the maximum electric current value supplied to the actuator on the basis of the maximum electric current value detected by the detecting unit.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: June 24, 2003
    Assignee: Aisin AI Co., Ltd.
    Inventors: Takeshige Miyazaki, Ryuji Choshi, Yoshiyuki Aoyama, Mitsutoshi Kamiya, Yoshihiro Ichikawa
  • Patent number: 6547012
    Abstract: A tractor/implement combination is controlled through the use of real-time data on the true draft force generated by engagement of an implement with the ground. A method of controlling a tractor/implement combination includes obtaining and storing calibration data on the torque generated at the tractor flywheel, while the implement is disengaged from the ground, including such data the rolling resistance and frictional/parasitic losses between the flywheel and driven wheel axle of the tractor. During subsequent operation of the tractor/implement combination, the calibration data is subtracted from instantaneous data to generate a signal indicative of the implement draft force. The draft force signal may be factored to take account of the tractor power train ratio and the rolling radius of the tractor tires. The method allows generation of accurate draft force data, regardless of the nature and mounting location of the implement.
    Type: Grant
    Filed: June 20, 2001
    Date of Patent: April 15, 2003
    Assignee: New Holland North America, Inc.
    Inventors: Andrew James Scarlett, John Charles Lowe, Tessa Frances MacKenzie
  • Patent number: 6536296
    Abstract: An apparatus and a method of controlling a vehicle is provided for correcting a lowered value of the torque of an output shaft in the gear shifting and suppressing a revolution speed of an input shaft on the basis of the lowered torque correction. The torque of the input shaft is adjusted at the termination of the gear shifting on the basis of the lowered torque correction.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: March 25, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Sakamoto, Toshimichi Minowa, Takashi Okada, Mitsuo Kayano, Tatsuya Ochi
  • Patent number: 6514173
    Abstract: An automatic transmission system has a switching mechanism for switching a plurality of shift gears and a sub-clutch by which transfer torque is controlled while being transferred from an input shaft to an output shaft. An actual deceleration speed is calculated based on an engine speed. Calculated next, based on an engine torque, is a target deceleration speed at which an output torque generated during upshifting is almost equal to an output torque generated after the upshifting. The transfer torque is controlled by feedback control so that the actual deceleration speed reaches the target deceleration speed.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: February 4, 2003
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventor: Hosei Suzuki
  • Patent number: 6502474
    Abstract: A control apparatus and method of a vehicle is provided for correcting a lowered value of the output shaft torque in the gear shifting and suppressing a input shaft speed on the basis of the lowered torque correction. The input shaft torque is adjusted at the termination of the gear shifting on the basis of the lowered torque correction.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: January 7, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Sakamoto, Toshimichi Minowa, Takashi Okada, Mitsuo Kayano, Tatsuya Ochi
  • Patent number: 6487925
    Abstract: An arrangement with a torque-controlled gearbox, for which the torque present on the transmission driving shaft is measured with a non-contacting torque sensor and the torque sensor supplies a measuring signal, which is fed to the gear control unit as a variable for the correct shifting moment. With a motor vehicle having an internal combustion engine, the drive output of the combustion engine is transmitted to the crankshaft, and the torque present at the crankshaft is transmitted via a clutch and an intermediate gear to the transmission drive shaft, from there to an output drive shaft, and finally via a differential gear to the drive wheels of the motor vehicle. The torque sensor detects the torque actually present at the transmission drive shaft and feeds the measuring signal proportional to this torque to a gear control unit. The arrangement advantageously permits a torque-free shifting of gears in the gearbox, which can thus be carried out comfortably.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: December 3, 2002
    Assignee: DaimlerChrysler AG
    Inventors: Roland Fischer, Reinhard Seyer, Werner Hillenbrand, Klaus Hoffman, Xiaoyi Liu, Hilmar Schmalz
  • Patent number: 6404332
    Abstract: Disclosed herein is a shift position indicating device for indicating a recommended shift position to a driver of a hybrid vehicle having an engine for driving a drive shaft of the vehicle, a motor for assisting a drive force applied to the drive shaft by electrical energy, and a battery for supplying power to the motor and storing electrical energy output from the motor. The motor having a regenerative function of converting kinetic energy of the drive shaft into electrical energy. According to the shift position indicating device, it is determined whether or not the vehicle is in a high-load running condition, and when the vehicle is in the high-load running condition, the shift-down is recommended.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: June 11, 2002
    Assignee: Honda Giken-Kogyo Kabushiki Kaisha
    Inventors: Teruo Wakashiro, Shinichi Kitajima, Hideyuki Takahashi, Asao Ukai, Hironao Fukuchi
  • Patent number: 6050152
    Abstract: Motor vehicle gearbox with two concentrically mounted input shafts (6, 9) each driving an individual lay shaft (12, 15), said lay shafts being located at different radial distances (S.sub.1, S.sub.2) from an output shaft. Opposite gears (16, 17, 18, 19) meshing in pairs with a common gear (21, 22) on the output shaft (20) have different numbers of teeth, due to the teeth of one gear being addendum modified in relation to the teeth of the other gear.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: April 18, 2000
    Assignee: AB Volvo
    Inventor: Sverker Alfredsson
  • Patent number: 5943917
    Abstract: A thermostat employing a lever for selecting the temperature setting has a detent mechanism for creating individual detent positions associated with temperature setting values. In a preferred embodiment the detent mechanism comprises ridges and valleys in the surface of the baseplate on which the thermostat elements are mounted. A projection on the setting lever engages the individual valleys to create the detent effect, and a edge of the cover cooperates with resiliency of the lever to deflect the lever so as to cause the projection on the lever to continually engage the ridges and valleys. Another embodiment has ridges and valleys on the edge of the cover which engage a first projection on the lever. A second projection slides along the baseplate surface and cooperates with resiliency of the lever to deflect the lever creating force urging the first projection into continual engagement with the ridges and valleys.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: August 31, 1999
    Assignee: Honeywell Inc.
    Inventors: Kenny Truong, Edward L. Schwarz
  • Patent number: 5741202
    Abstract: A shift by wire transmission system enables a driver to manually select a next desired gear and the system completes the shift automatically without requiring the driver to operate the clutch. The system includes an electronic transmission control unit that communicates with an electronic engine control unit to control engine speed during a shift in order to synchronize the speed of an engine shaft and the transmission shaft. The driver manually chooses a gear shift by moving a shift lever to thereby produce electrical signals indicative of the desired change in gears. Multiple or skip shifting is possible along with a method of automatically choosing a default gear in the event that the vehicle transmission is placed in neutral while the vehicle is in motion.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: April 21, 1998
    Assignee: Meritor Heavy Vehicle Systems, LLC
    Inventor: Jon M. Huber
  • Patent number: 5681235
    Abstract: A continuously variable traction transmission uses a pair of rotatable, substantially cone shaped members, one cone being connected to a power input shaft and the other cone being connected to the load output shaft. The small diameter of one cone is oriented adjacent the large diameter end of the other cone. The cone surfaces are configured such that the cones may make contact at a point or small area, for example, as seen longitudinally, the surface of one cone may be slightly convex and the surface of the other cone may be straight. The shafts on which the cones rotate are angularly adjustable with respect to each other such that the point of contact, and therefore the ratio of diameters of the cones, may be varied from one end of the cones to the other to continuously vary the input/output ratio of speed and torque transmitted through the transmission.
    Type: Grant
    Filed: April 19, 1996
    Date of Patent: October 28, 1997
    Assignee: Transmission Technologies, Inc.
    Inventor: George Ketcham
  • Patent number: 5626055
    Abstract: An electrically-driven thrust generator is provided, which can contribute energy saving, and has properties (thrust controllability, swift action etc.) equivalent to hydraulic cylinders and contributes to solve problems (leakage etc.) associated with oil pipings. The electrically-driven thrust generator comprises a motor 3, a variable reduction ratio speed reducers 5, a rotary motion to linear motion converting mechanism 7, a thrust rod 121 linearly driven by this rotary motion to linear motion converting mechanism 7. The present invention is characterized in that the rotary motion to linear motion converting mechanism 7 comprises an oscillating crank plate driven rack mechanism, which provides a compact and powerful electrically-driven thrust generator equivalent to hydraulic thrust generator.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: May 6, 1997
    Assignee: Teijin Seiki Co., Ltd.
    Inventor: Kiyozumi Fukui
  • Patent number: 5546822
    Abstract: An automatic transmission incorporating a means for varying the ratio of input rotational velocity to output rotational velocity. A cylinder cam is mounted on a cam driver having a helical gear tooth thereon engaging corresponding helical internal gear teeth within the cylinder cam. The cylinder cam incorporates a continuously varying cam angle and is axially translatable along the cam driver; the cam is positioned on the cam driver automatically in accordance with torque requirements by the forces transmitted to the cam through the helical gears of the cam driver. Spherical cam followers mounted in a sphere cluster engage the cylinder cam; the clusters are mounted for rotation about an axis perpendicular to the axis of rotation of the cam.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: August 20, 1996
    Inventor: John E. Fowler
  • Patent number: 5537887
    Abstract: A hydraulic control system for 4-speed automatic transmission which is controlled by torque control hydraulic pressure in regular succession and can provide a skip shift comprises a fluid pump (32), a pressure regulator valve (34) for regulating the line pressure generated at the fluid pump (32), a plurality of frictional elements (108, 62, 120, 84, 94, 100, 126) actuated by drive hydraulic pressure or reverse hydraulic pressure in accordance with the position of a valve spool of a manual valve (58), a first transmission control portion (D) having at least two valves (78, 86, 98) for supplying hydraulic pressure to at least one of the frictional elements, and a second transmission control portion (E) for selecting at least one of the frictional elements.
    Type: Grant
    Filed: February 13, 1995
    Date of Patent: July 23, 1996
    Assignee: Hyundai Motor Company
    Inventors: Jaeduk Jang, Kibeen Lim, Doki Lim
  • Patent number: 5507198
    Abstract: A mechanical transmission (10) includes a first gear (13), a second gear (15), a slip clutch (14), an input shaft (11), a fourth gear (20), a one-way bearing (21), a third gear (18) and an output shaft (12). The first gear (13) and the slip clutch (14) are mounted on the input shaft (11). The first gear (13) is meshed with the second gear (15) which is mounted on the output shaft (12). The one-way bearing (21) and the fourth gear (20) are mounted on the output shaft (12); the latter (20) is meshed with the third gear (18) which is mounted on the input shaft (11) to constitute a step-down gearing (22). When the load upon the output shaft (12) increases so that the torque imposed upon the slip clutch (14) is higher than predetermined, the slip clutch (14) releases, and the increased torque generated by the step-down gear set (18, 20) drives the increased load upon the output shaft (12). Two additional embodiments (10', 10") are disclosed.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: April 16, 1996
    Inventor: Tai-Her Yang
  • Patent number: 5487004
    Abstract: A control system (104)/method for a vehicular automated mechanical transmission is provided, which will compare input signals indicative of input shaft speed (IS) to the product of input signals indicative of output shaft speed multiplied by engaged gear ratio (OS*GR) to develop control parameters indicative of drivetrain torque magnitude and/or phase requiring a driveline torque transducer.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: January 23, 1996
    Assignee: Eaton Corporation
    Inventor: Marcel Amsallen
  • Patent number: 5390562
    Abstract: A transmission control in a multi-speed transmission gear arrangement is responsive to thrust forces generated at the gear member controlled by an on-coming friction device during a ratio interchange to generate a control signal. The control signal is used to begin the disengagement process of the off-going friction device.
    Type: Grant
    Filed: June 4, 1993
    Date of Patent: February 21, 1995
    Assignee: General Motors Corporation
    Inventor: James F. Sherman
  • Patent number: 5368279
    Abstract: An automatic load responsive winch is disclosed and includes a base, a winch drum rotatable mounted on the base, and a rotatable drive shaft for driving the winch drum. At least two gear trains are mounted between the drive shaft and the drum for rotating the drum in response to rotation of the drive shaft. One of the two gear trains produces a different drum speed than the other gear train. In one embodiment, when a variable torque load is applied to the winch, a mechanism is vertically displaceable. The mechanism engages one of the gear trains at a first vertical position of the mechanism and disengages the one gear train at a second vertical position to isolate the one gear train and provide for rotation of the winch drum by the other gear train. In another embodiment, when a variable torque load is applied to the winch, a mechanism is angularly displaceable.
    Type: Grant
    Filed: August 10, 1992
    Date of Patent: November 29, 1994
    Assignee: IMI Barient, Inc.
    Inventors: William Ottemann, Bruno Resch, Guillermo Ferramola
  • Patent number: 5297982
    Abstract: A toy vehicle includes a toy vehicle body, a plurality of drive wheels coupled to the body, a motor having an output shaft, a gear drive coupled to the output shaft and a transmission having a changeable gear ratio coupling the gear drive to at least one of the wheels responsive to the load imposed upon the transmission and changing the gear ratio in response thereto.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: March 29, 1994
    Assignee: Mattel, Inc.
    Inventor: Miva A. Filoseta
  • Patent number: 5281190
    Abstract: Multi-mode friction clutch having a plurality of interleaved clutch plates operable for establishing gear ratios in planetary and countershaft type automatic transmissions and operative to provide smooth and self-synchronized shifting without the use of one-way roller or sprag clutches. Gear thrust forces from associated helical gearing and opposing hydraulic pressure forces are used to regulate the hydraulic pressure of a piston chamber by shifting an annular control sleeve which controls fluid exhaust from the chamber to maintain a direct relationship between the torque capacity of the clutch and the variable torque it actually carries. Consequently, the clutch is automatically released when the transmitted torque diminishes to zero or reverses. The clutch is applied in a normal lock mode for predetermined gear ratios, set in one-way mode for shifting and totally released when the shift is completed.
    Type: Grant
    Filed: August 12, 1992
    Date of Patent: January 25, 1994
    Inventor: Erkki Koivunen
  • Patent number: 5263906
    Abstract: A multi-speed mechanical automatic transmission has two planetary gear trains, each including a sun gear, planet gears mounted in a planet carrier, and a ring gear. The first planetary gear train provides low gear and direct drive; the second train modifies low gear operation of the first train to provide an intermediate gear operation. The first sun gear is fixed to an input shaft, and the first planet carrier drives an output shaft. The second planet carrier is coupled to rotate the first ring gear in one direction, and free wheels or selectively actuated friction brakes prevent rotation of the first and second ring gears in the opposite direction. The first planetary train has helical gears, and a direct drive clutch selectively couples the first ring gear to the first planet carrier.
    Type: Grant
    Filed: October 18, 1991
    Date of Patent: November 23, 1993
    Assignee: Antonov Automotive North America B.V.
    Inventor: Roumen Antonov
  • Patent number: 5135428
    Abstract: An automatic transmission for a toy vehicle includes a pinion having a driving side and a driven side and being fixedly coupled to a shaft, a high speed gear coupled to the pinion through a first clutch, and a low speed gear coupled to the pinion through a second, uni-directional clutch, wherein the second clutch slips in response to the first clutch being engaged to rotate the pinion at a relatively high speed, and wherein the first clutch slips when a predetermined force is applied to the driven side of the pinion, whereby the second clutch is engaged to rotate the pinion at a relatively low speed.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: August 4, 1992
    Assignee: Tomy Company, Ltd.
    Inventors: Kiyoshi Shibayama, Katsumi Kakizaki