With Brake Means For Gearing Patents (Class 74/411.5)
  • Publication number: 20100058884
    Abstract: The present invention pertains generally to a self-locking gear that includes an input shaft, a collar, a locking mechanism, and an output member. The collar is positioned eccentrically about the input shaft, and the locking mechanism prevents the collar from rotating. As a result, rotation of the input shaft causes the collar to gyrate about the input shaft, and the gyrating collar engages with the output member to turn the output member in the same direction as the input shaft. Torque applied to the output member with cause the output member to attempt to rotate the collar. However, the locking mechanism prevents the collar from rotating, thus locking the output member from rotation.
    Type: Application
    Filed: September 8, 2008
    Publication date: March 11, 2010
    Inventor: Stanley Ackerman
  • Publication number: 20100038478
    Abstract: An actuator comprising: two motors; an output member; and a harmonic gear comprising: an elliptical wave generator component; a flexible spline component which is coupled to the wave generator by a bearing and flexes to conform to the elliptical shape of the wave generator; and a circular spline component which surrounds and meshes with the flexible spline component. One of the harmonic gear components is coupled to the output member, and each of the other harmonic gear components is coupled to a respective one of the motors.
    Type: Application
    Filed: September 11, 2007
    Publication date: February 18, 2010
    Inventor: Matthew John Knight
  • Publication number: 20100018736
    Abstract: The invention relates to a gearing, in particular for portable electric power tools, preferably for angle grinders, comprising an automatic locking device (6, 15). According to the invention, provision is made for damping elements (20) to be integrated in the locking device module.
    Type: Application
    Filed: November 22, 2006
    Publication date: January 28, 2010
    Inventor: Juergen Wiker
  • Publication number: 20100011894
    Abstract: A vehicle drive device includes a main shaft operatively coupled to a motor of the vehicle, where the main shaft has a drive gear, and a countershaft having a drive gear and a driven gear. The drive gear of the main shaft is configured to engage the driven gear of the countershaft. Also included is a differential having a driven gear and a half axle gear, where the drive gear of the countershaft is configured to engage the driven gear of the differential, and the half axle gear of the differential is configured to drive a wheel of the vehicle. A parking mechanism is connected with the countershaft and is configured to lock the countershaft in a parking mode.
    Type: Application
    Filed: July 17, 2009
    Publication date: January 21, 2010
    Applicant: BYD Company Limited
    Inventors: Chuanfu WANG, Hongbin Luo, Ruzhong Luo, Yi Ren, Guangquan Chen, Kaizhao Li, Yu Yan
  • Publication number: 20100004823
    Abstract: A vehicle steering control system includes a variable transmission ratio device that rotates an output shaft relative to an input shaft so as to change the transmission ratio, and a locking device that is switched between a lock-on state in which the transmission ratio between the input shaft and the output shaft is inhibited from being changed and a lock-off state in which the transmission ratio between the input shaft and the output shaft is allowed to be changed. The variable transmission ratio device includes an electric motor and a speed reduction mechanism. The locking device inhibits the input shaft and a rotor of the electric motor from rotating relative to each other when placed in the lock-on state, and allows the input shaft and the rotor to rotate relative to each other when placed in the lock-off state.
    Type: Application
    Filed: April 9, 2008
    Publication date: January 7, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Masatoshi Nakatsu
  • Patent number: 7631742
    Abstract: A parking lock device for an automatic transmission includes: a parking gear externally fixed to the output shaft; a parking lock pole displaced between a lock position, where the parking lock pole latches onto the parking gear to disable rotation of the parking gear, and an unlock position, where the parking lock disengages from the parking gear to enable rotation of the parking gear; a parking rod for displacing the parking lock pole toward and away from the parking gear; a drive lever that moves the parking rod; and a booster mechanism interposed between the parking rod and the drive lever that increases the driving force of the drive lever. Thus, the parking lock device makes the driving force applied by the drive lever when unlocking as small as possible and prevents inadvertent unlocking when in a locked state, thereby achieving smooth operation and enhanced reliability.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: December 15, 2009
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Naoki Nishimura
  • Patent number: 7621387
    Abstract: A parking brake and shift mechanism for vehicles comprises a transmission shaft, a parking shift gear wheel, a stopper, and a dog clutch. The parking shift gear wheel is provided with at least one tooth to move in conjunction with the axis of the transmission shaft. The stopper is provided with at least one groove which contains the tooth. The dog clutch is fixed on the transmission shaft and provided with at least one concavity for accommodating the tooth.
    Type: Grant
    Filed: December 4, 2006
    Date of Patent: November 24, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Yeu-Jou Lin, Li-Yu Chen
  • Patent number: 7611003
    Abstract: An apparatus for braking a counter shaft of a transmission, where the apparatus can cut off power delivery to the transmission and simultaneously reduce a rotation speed of the counter shaft for an easier gear shift. The apparatus includes: a transmission case; a counter shaft in the transmission case; a counter shaft brake that is engaged with the counter shaft and variably stops the counter shaft; and a counter shaft brake operating fork for operating the counter shaft brake.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: November 3, 2009
    Assignee: Hyundai Motor Company
    Inventor: Chi Hwan Choi
  • Publication number: 20090247345
    Abstract: A drive for a working machine, in particular a press drive, includes an electric motor, a transmission, and a brake. The brake is disposed between the transmission and the electric motor. A forming device, such as a forming press, includes a press housing, a press shaft, and a drive for the press shaft. The drive is configured as outline above.
    Type: Application
    Filed: March 26, 2009
    Publication date: October 1, 2009
    Applicant: DESCH ANTRIEBSTECHNIK GMBH & CO. KG
    Inventors: Alexander P. Desch, Bernhard Plattfaut, Uwe Geilker
  • Patent number: 7581461
    Abstract: A transmission for vehicles is composed of an input shaft provided with a plurality of drive gears and connected to a drive shaft of an engine, an output shaft disposed parallel to the input shaft, driven gears which mesh with the drive gears, individually, and are rotatably disposed on the output shaft, a synchromesh mechanism which includes a sleeve axially movable relative to the output shaft and engages with a side of the driven gears, thereby connecting the driven gears to the output shaft, and a parking gear formed integrally on a hub of the synchromesh mechanism, the parking gear radially overlapping a bearing from outside. Thus, there may be provided a transmission for vehicles that requires less component parts and has a small transverse dimension.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: September 1, 2009
    Assignees: Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Mitsubishi Jidosha Engineering Kabushiki Kaisha
    Inventor: Masahiro Matsushita
  • Publication number: 20090194387
    Abstract: A self service terminal having a slot; at least one shutter for selectively opening and closing the slot and a gear drive for moving the shutter between open and closed positions, the gear drive having a first gear that interacts with a second gear, at least one of the first and second gears defining a stop that is engagable with the other of the first and second gears to stop or prevent non-gear driven movement of the shutter.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 6, 2009
    Inventors: Stewart J. Herd, Alexander S. MacDonald
  • Patent number: 7556135
    Abstract: A parking mechanism of a transmission includes a parking sprocket plug having a pawl portion to be engaged with a parking gear, a parking rod which has a bulge portion and causes the parking sprocket plug to operate, and a bracket which has a rod support member supporting the parking rod. The parking sprocket plug also has a support piece. When the bulge portion is disengaged from a projection, the support piece is hooked on the bulge portion, and the parking sprocket plug is supported in a position where the pawl portion is disengaged from the parking gear. Thereby, a parking mechanism which incurs no malfunction and requires small force for operation is provided.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: July 7, 2009
    Assignees: Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Mitsubishi Jidosha Engineering Kabushiki Kaisha
    Inventor: Koji Kasuya
  • Publication number: 20090120224
    Abstract: An apparatus for driving a roller of a printing press includes a main motor configured to drive the roller through a first gear wheel and a first freewheel, and an auxiliary motor configured to drive the roller through a second gear wheel and a second freewheel. A brake that is different from the main motor, for example a band brake, is configured to brake the roller during overrunning of the roller following a machine stop signal. A printing press having the apparatus is also provided.
    Type: Application
    Filed: September 11, 2008
    Publication date: May 14, 2009
    Applicant: HEIDELBERGER DRUCKMASCHINEN AG
    Inventors: Stephan Balleis, Rainer Hofmann, Patrick Roth, Bernd Sitzmann, Markus Uihlein
  • Patent number: 7530439
    Abstract: A drive device includes a first shaft, a second shaft disposed at a position deviated from a shaft line of the first shaft, a drive source that drives the first shaft to rotate, and a drive force transmitting unit connecting the first shaft to the second shaft via the drive force transmitting unit to transmit a drive force of the drive source from the first shaft to the second shaft. The drive force transmitting unit includes a reverse preventing mechanism that prevents the first shaft from being rotated in a reverse direction. The reverse preventing mechanism includes a one-way clutch, and the drive force transmitting unit further includes a reduction mechanism that reduces a rotational speed of the one-way clutch to be lower than a rotational speed of the first shaft.
    Type: Grant
    Filed: March 17, 2005
    Date of Patent: May 12, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Mitsuru Yamada, Yutaka Fukuchi, Yuji Arai
  • Patent number: 7506560
    Abstract: An actuator, preferably a linear actuator, a reversible motor which drives an adjustment element via a transmission. To increase the self-clocking ability of the actuator, the actuator is equipped with a coil spring which has its one end secured to a rotating element in the actuator so that the spring is carried along in the rotation on the cylindrical part, which is static in relation thereto. When the motor is turned off, and the load on the actuator tries to displace the adjustment element, the movement of the coil spring is blocked, and the coil spring is tightened around the cylindrical part.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: March 24, 2009
    Assignee: Linak A/S
    Inventor: Norbert Klinke
  • Patent number: 7493999
    Abstract: This invention relates to the housing of a hybrid electro-mechanical transmission consisting of park pawl system located in the end cover portion of the transmission housing. The end cover portion is configured to cover the park pawl system and allow access to the components of the park pawl system for assembly or service even as the end cover portion remains attached to the main housing of the transmission. Beyond providing coverage to the park pawl system, the end cover portion also provides structural support to a main housing portion during operation of the transmission. A method of assembling a park pawl system between main and end cover portions of a transmission housing is also provided.
    Type: Grant
    Filed: January 21, 2005
    Date of Patent: February 24, 2009
    Assignee: General Motors Corporation
    Inventors: William S. Reed, James A. Raszkowski, Joel E. Mowatt, Bert D. Love, Rick K. Daugherty
  • Publication number: 20090038424
    Abstract: Method for shifting a neutral state of an automatic multi-stage transmission of a motor vehicle, where, to engage and to disengage gear stages of the transmission, shift couplings, at least one of which is equipped with a synchronizing device, can be actuated by a transmission actuator.
    Type: Application
    Filed: May 9, 2008
    Publication date: February 12, 2009
    Applicant: ZF Friedrichshafen AG
    Inventors: Hans-Jurgen Schneider, Thomas John, Mario Buhner
  • Publication number: 20090007709
    Abstract: A brake system that includes a friction plate composed of inner friction plates and outer friction plates that are arranged alternately in an axial direction; a cylinder portion that is open toward the friction plate in the axial direction; a piston member that slidably fits into an opening portion of the cylinder portion, thereby forming a working oil chamber, and that is pressed and driven away from the cylinder portion in the axial direction by oil pressure supplied to the working oil chamber, thereby pressing the friction plate; a return spring that biases the piston member toward the cylinder portion in the axial direction; and a drum member integrally provided with a drum portion that is in spline engagement with the friction plate, a pressure-receiving portion that is formed in a vertical direction to the axial direction and receives a reaction force of the return spring, and a fixed portion.
    Type: Application
    Filed: July 7, 2008
    Publication date: January 8, 2009
    Applicant: AISIN AW CO., LTD.
    Inventors: Kazuhiko Sugita, Naoji Katou
  • Publication number: 20080319265
    Abstract: A gear apparatus includes a spur gear including teeth and to be rotated around a rotation axis, a rotation mechanism to rotate the spur gear, a limitation member including tooth to be engaged with the teeth of the spur gear, the limitation member to limit the rotation of the spur gear, a movement mechanism to move the limitation member in the radial direction of the rotation axis such that the tooth of the limitation member is engaged with the teeth of the spur gear, an input mechanism to input power to actuate the movement mechanism, a transmission mechanism to transmit the power input by the input mechanism to the movement mechanism, and an accumulation mechanism provided in the transmission mechanism and to accumulate the power input by the input mechanism when a tip of the tooth of the limitation member contacts a tip of the tooth of the spur gear.
    Type: Application
    Filed: June 12, 2008
    Publication date: December 25, 2008
    Inventor: Yutaka Masaki
  • Publication number: 20080282824
    Abstract: A drive has a drive source connected with an automatic manual gearbox. A friction clutch is positioned between the drive source and the gearbox. The drive also has a differential, which with a gear wheel engages a first gear wheel on the gearbox output shaft, as well as a gear module to change the transmission in the gear without interrupting the drive. The gear module has a brake and a bypass transmission with three rotation bodies of which a first rotation body is connected to the first clutch part, a second rotation body is connected to a connecting gear wheel, which engages the first gear wheel, and the third rotation body is connected to the brake. The connections of the rotation bodies to the parts stated and respectively of the drive are made in this as splines.
    Type: Application
    Filed: July 18, 2006
    Publication date: November 20, 2008
    Inventors: Marie Roell Van Druten, Bas Gerard Vroemen, Alexander Franciscus Anita Serrarens
  • Publication number: 20080245624
    Abstract: A latching device including a reversibly rotatable drive gear, a reversibly rotatable driven gear meshing with the drive gear, and a cantilever including a latching gear meshing with one of either the drive gear or the driven gear. The cantilever includes an electrically distortable polymeric material configured to distort in response to an applied current to position the latching gear in an intermeshing relationship with both the drive gear and the driven gear, such that the drive gear, driven gear, and latching gear selectively prevent rotational motion of the gear assembly in a predetermined direction. Also, an electromechanical brake assembly including a rotary motor and the latching device, where the gear assembly selectively prevents rotational motion of the rotary motor in a brake-disengaging direction.
    Type: Application
    Filed: April 5, 2007
    Publication date: October 9, 2008
    Inventors: Schuyler S. Shaw, Paul Rymoff
  • Patent number: 7331894
    Abstract: A hydraulically-actuatable clutch and method is operable as an overdrive clutch in a transmission system having a transmission main shaft portion. The clutch is engageable between a transmission housing and a sun gear and rotor hub to provide for grounding of the sun gear and rotor hub to the transmission housing. The clutch may either be engaged or disengaged from the transmission housing. The clutch does not allow the rotor and sun gear to rotatably slip with respect to the transmission housing when the clutch is engaged to ground the rotor and sun gear to the transmission housing. When the clutch is disengaged, the rotor and sun gear may rotate with the transmission main shaft portion.
    Type: Grant
    Filed: May 18, 2005
    Date of Patent: February 19, 2008
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Henryk Sowul, Michael H. Pohl
  • Publication number: 20080011576
    Abstract: A parking brake and shift mechanism for vehicles comprises a transmission shaft, a parking shift gear wheel, a stopper, and a dog clutch. The parking shift gear wheel is provided with at least one tooth to move in conjunction with the axis of the transmission shaft. The stopper is provided with at least one groove which contains the tooth. The dog clutch is fixed on the transmission shaft and provided with at least one concavity for accommodating the tooth.
    Type: Application
    Filed: December 4, 2006
    Publication date: January 17, 2008
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yeu-Jou Lin, Li-Yu Chen
  • Patent number: 7303057
    Abstract: A parking device for vehicles in which when an engine is brought into a halt, a clutch is disconnected and the revolution of an input shaft of a transmission cannot be controlled by frictional force of the engine, the parking device includes a parking gear provided on the input shaft, a parking lock mechanism which selectively engages with the parking gear, a change lever which instructs a gear position of the transmission and is mechanically coupled to the parking lock mechanism, a speed-change actuator for shifting the transmission to each gear position, a neutral position detection unit of the change lever, a parking operation detection unit, a vehicle speed sensor, a control unit, wherein the control unit sends a control signal to the speed-change actuator to bring the transmission into engagement with a gear position that corresponds to the traveling speed of the vehicle.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: December 4, 2007
    Assignee: Isuzu Motors Limited
    Inventor: Yasushi Yamamoto
  • Patent number: 7155992
    Abstract: A driving force transmission mechanism having a following rotation preventing mechanism that prevents a follower wheel from rotating together with a driving wheel in a play section is provided. Also, a damper apparatus that can drive two open-close plates independently from each other through the driving force transmission mechanism are provided. The following rotation preventing mechanism includes a cam member that rotates together with the follower wheel, and an elastic member that elastically presses a cam surface of the cam member. The cam surface has an arcuate section that slides against the elastic member in a linked movement section in which the follower wheel follows rotations of the driving wheel, small diameter sections on both sides of the arcuate section, and ridge sections that continuously connects the small diameter sections and the arcuate section without forming step differences.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: January 2, 2007
    Assignee: Nidec Sankyo Corporation
    Inventor: Seiichiro Noritake
  • Patent number: 7156218
    Abstract: A parking device for vehicles in which when an engine is brought into a halt, a clutch is disconnected and the revolution of an input shaft of a transmission cannot be controlled by frictional force of the engine, the parking device comprising a parking gear provided on the input shaft, a parking lock mechanism which selectively engages with the parking gear, a parking actuator for actuating the parking lock mechanism, a parking instruction device for instructing the parking, a speed-change actuator for shifting the transmission to each gear, and a control device. The control operates the speed-change actuator based on a signal from the parking instruction device to bring the transmission into engagement with a predetermined gear position and, thereafter, operates the parking actuator to bring the parking lock mechanism into engagement with the parking gear.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: January 2, 2007
    Assignee: Isuzu Motors Limited
    Inventor: Yasushi Yamamoto
  • Patent number: 7152724
    Abstract: This invention relates to the housing of a hybrid electro-mechanical transmission consisting of park pawl system located in the end cover portion of the transmission housing. The end cover portion is configured to cover the park pawl system and allow access to the components of the park pawl system for assembly or service even as the end cover portion remains attached to the main housing of the transmission. An access cover and seal for the access opening in the end cover portion is also provided. The access opening is designed to be small enough so that the end cover portion can also provides structural support to a main housing portion during operation of the transmission. A method of selectively providing access to a park pawl system located in the end cover portion of a transmission housing is also provided.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: December 26, 2006
    Assignee: General Motors Corporation
    Inventors: William S. Reed, James A. Raszkowski, Joel E. Mowatt, Bert D. Love, Rick K. Daugherty
  • Patent number: 7152723
    Abstract: A parking device for vehicles in which the rotation of an input shaft of a transmission is not limited by the frictional force of an engine when the engine is brought into a halt, the parking device comprising a parking gear provided on the input shaft, a parking lock mechanism which selectively engages with the parking gear, a change lever mechanically coupled to the parking lock mechanism, a speed-change actuator for shifting the transmission to each gear, a parking operation detection device arranged in an operation passage of the change lever from the neutral position to a parking position, and a control device. When the operation of the change lever has been confirmed by the parking operation detection device at the time when the change lever is operated from the neutral position to the parking position, the control device operates the speed-change actuator to bring the transmission into engagement with a predetermined gear.
    Type: Grant
    Filed: April 19, 2004
    Date of Patent: December 26, 2006
    Assignee: Isuzu Motors Limited
    Inventor: Yasushi Yamamoto
  • Patent number: 7134356
    Abstract: The invention relates to a gear for conveyors which has a drive shaft to which a drive motor is to be fastened as well as an output shaft with which the gear is connected to the conveyor. However, at least one gear step is provided within the gear. Moreover, the gear is provided with a freewheel locking in one direction of rotation. A second gear step is provided in this case between the freewheel and the elements transmitting torque between drive and output shaft during normal operation, so that the freewheel should be operated at a higher speed and must only provide a low holding moment in the event of a stoppage.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: November 14, 2006
    Assignee: PIV Drives GmbH
    Inventors: Gert Schönnenbeck, Peter Faust, Marcel Offermann, Peter Janssen
  • Patent number: 7100465
    Abstract: An actuator includes an inner tube, an outer tube disposed over the inner tube in a manner such that the tubes reciprocate with respect to one another. A removably operably disposed ball screw having a ball nut thereon extends through the tubes, the ball screw having an outer diameter which is less than an inner diameter of the tubes such that an annular space exists between the screw and the tubes. A brake assembly is operably disposed within outer tube and at least a part of said brake assembly, and said ball screw and said ball nut are removable from the tubes without causing damage thereto.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: September 5, 2006
    Inventors: Russell E. Hollis, Paul R. Hollis, Douglas W. Olson
  • Patent number: 7025188
    Abstract: A parking lock for an automated transmission of a motor vehicle includes a first spring-type actuator for engaging the parking lock, a transmission actuator, a release device operable using the transmission actuator for disengaging the parking lock, and a retaining device. The retaining device is configured to counteract at least one of the spring-type actuator and a second spring-type actuator so as to hold the parking lock in a disengaged state.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: April 11, 2006
    Assignee: LUK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Christoph Lindenschmidt, Reinhard Berger
  • Patent number: 6886678
    Abstract: A clutch assembly 10 is provided for a motor having a shaft 36, a worm 40 associated with the shaft and an output gear 42 engaged by the worm. The clutch assembly includes a clutch body 12 having a plurality of pockets 22 in a surface thereof. Each pocket has a cam surface 24 defined by a depth of the pocket that gradually increases from a deep end to a shallow end. A ball bearing 18 is disposed in each of the pockets 22. Spring structure 16 maintains the ball bearings in the pockets. A pressure plate 14 is operatively associated with the clutch body and is constructed and arranged to be coupled with the shaft 36 of the motor. Under certain conditions, the ball bearings wedge between the pressure plate and surfaces defining the associated pocket, thereby preventing rotation of the shaft when coupled with the pressure.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: May 3, 2005
    Assignee: Siemens VDO Automotive Corporation
    Inventor: Luis E. Acosta
  • Patent number: 6868952
    Abstract: To provide an inexpensive parking lock mechanism for a countershaft transmissions, the transmission shaft is locked relative to a bearing outer race of a tapered roller bearing. This bearing outer race is rotationally fixed relative to the transmission housing and one of two tapered roller bearings which are mutually arranged in an X and support the transmission shaft.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: March 22, 2005
    Assignee: DaimlerChrysler AG
    Inventor: Hans Bürger
  • Patent number: 6848531
    Abstract: A small vehicle features a drive system that directs power from an engine unit to at least one driven wheel. The driven wheel is connected to a half shaft. The half shaft is driven by a ring gear. The ring gear is driven by a pinion gear. The pinion gear is connected to a longitudinally extending drive shaft. The pinion gear is axially adjustable along the rotational axis of the drive shaft relative to the ring gear. The pinion gear is not substantially axially adjustable relative to a cover member the partially defines a gear housing. The cover member is adjustably secured to the balance of the gear housing through a shim. The shim can be exchanged for varied shim sizes to effect proper meshing between the pinion gear and the ring gear.
    Type: Grant
    Filed: April 9, 2002
    Date of Patent: February 1, 2005
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Kazuhiko Izumi, Hitoshi Takeuchi
  • Patent number: 6845857
    Abstract: A parallel shaft reduction gear with a backstop mechanism superior in replacement and maintenance operations is provided. The parallel shaft reduction gear that is used in combination with a motor and equipped in a gear case with primary-stage shafts which are disposed axially parallel to an output shaft. The output shaft and the primary-stage shaft are rotatably supported by bearings on the motor side and on the opposite side of the motor side with respect to the gear case, respectively. The backstop mechanism that prevents reverse rotation of the output shaft is installed in any one of the output shaft and the primary-stage shaft on the axially outside of the corresponding opposite motor side bearing (lower side in the figure).
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: January 25, 2005
    Assignee: Sumitomo Heavy Industries, Ltd.
    Inventors: Naoki Matsuo, Kazunari Saiki
  • Publication number: 20040221670
    Abstract: The invention relates to a step down gear train for an adjusting device of an automotive vehicle seat, said step down gear train having an input shaft and an output shaft that is connected to a pinion. In the path between input shaft and output shaft there is at least one first cogwheel and one second cogwheel. The invention explains that there is provided a follower wheel that engages the first cogwheel and that is not located in the path between the input shaft and the output shaft. A pusher wheel is further provided, which is not located in the path between input shaft and output shaft. Said pusher wheel engages both the follower wheel and the second cogwheel and is carried so as to be longitudinally slidable.
    Type: Application
    Filed: April 29, 2004
    Publication date: November 11, 2004
    Applicant: C. Rob. Hammerstein GmbH & Co. KG
    Inventors: Burckhard Becker, Wilfried Beneker, Van-Toan Ho
  • Patent number: 6814209
    Abstract: A clutch mechanism 20 is provided for a motor 10. The motor has a shaft 12, a worm 14 associated with the shaft, a gear 16 engaged by the worm, and a friction surface 27. The clutch mechanism 20 includes a pressure plate 22 mounted for movement with respect to the shaft toward and away from the friction surface 27. A spring 26 is constructed and arranged to bias the pressure plate towards the friction surface. A stop 30 is constructed and arranged to limit movement of the pressure plate in a direction away from the friction surface. Whereby, under a back drive condition of the motor when the motor is not energized and the gear is moved by an externally applied torque causing an axial force to be exerted on the worm inducing an axial and an angular movement to the shaft, the pressure plate is constructed and arranged to move towards and engage the friction surface thereby impeding rotation of the shaft.
    Type: Grant
    Filed: July 9, 2003
    Date of Patent: November 9, 2004
    Assignee: Siemens VDO Automotive Corporation
    Inventor: Luis E. Acosta
  • Publication number: 20040187620
    Abstract: A smart actuator and method includes an actuating device adapted to deliver a selected driving torque to a geartrain that is coupled to an output shaft and adapted to selectively convey the driving torque from the actuating device to the output shaft to achieve a selected shaft position. At least one logic and control device operates the various aspects of the smart actuator. The geartrain includes at least one locking gear including locking features defining a plurality of gear positions. A position lock solenoid is adapted to engage the locking gear at a selected gear position once the geartrain has achieved the selected shaft position on the output shaft. The position lock solenoid then holds the gear at the selected gear position. The actuating device is shut off after the position lock solenoid has engaged the locking gear thereby achieving and holding a high torque without driving a lot of current.
    Type: Application
    Filed: March 25, 2003
    Publication date: September 30, 2004
    Inventors: Thomas Wayne Newman, Thomas E. Gyoergy, Jeffrey Jean Stege, Chris D. Robinson, Lawrence Dean Hazelton
  • Publication number: 20040134297
    Abstract: A self-locking device for a gear set is configured to permit forward-driving an input in either of first and second rotational directions and for substantially preventing an output from being back-driven in either of the rotational directions. The device includes a gear disposed to rotate with a drive shaft. The device further includes first and second releasable couplings coupled to the gear and, respectively, to first and second ratchets. The first ratchet is disposed to prevent rotation in a first direction and to permit rotation in a second direction. The second ratchet is disposed to prevent rotation in the second direction and permit rotation in the first direction. The device may be useful, for example, in a valve gearbox. A gearbox and a method of fabricating a gearbox are also disclosed.
    Type: Application
    Filed: January 10, 2003
    Publication date: July 15, 2004
    Inventors: Thomas C. West, Patrick S. West
  • Patent number: 6729443
    Abstract: A transaxle for a small utility vehicle or implement, including a casing, at least one rotatable shaft disposed in and extending from the casing, at least one brake disc rotatably fixed to the rotatable shaft for rotation therewith, and at least one braking mechanism with at least a portion of the braking mechanism being externally mounted on the casing proximate the rotatable shaft. The braking mechanism includes at least one friction puck disposed proximate the brake disc, and a brake shaft including a cam surface having a longitudinal edge, wherein the brake shaft has an engaged position in which the longitudinal edge is in operative engagement with the friction puck and the friction puck is in pressing engagement with the brake disc and a disengaged position in which the longitudinal edge is out of operative engagement with the friction puck.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: May 4, 2004
    Assignee: Tecumseh Products Company
    Inventors: Richard T. Ruebusch, Kevin L. Johnson, Douglas G. Williams, Phillip G. Ross
  • Patent number: 6695117
    Abstract: A motor vehicle transmission with a frictional parking lock mechanism is particularly suitable for shift-by-wire applications. The frictional parking lock mechanism makes it possible to have convenient controllability, as compared with positive parking lock mechanisms.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: February 24, 2004
    Assignee: DaimlerChrysler AG
    Inventors: Carsten Haertel, Simon Jenko, Michael Jud
  • Publication number: 20040020319
    Abstract: An opening and closing device for moving a movable member which includes a drive gear connected to a power source, a driven gear geared with the drive gear, an immovable portion supporting the drive gear and the driven gear, and a dynamic transmission mechanism connected to the driven gear so that the driven gear and the dynamic transmission mechanism rotate together as a unit. The dynamic transmission mechanism transmits a drive force of the power source from the driven gear to the movable member. A direction of a rotational force affecting the driven gear via the dynamic transmission mechanism in accordance with a state of the movable member fluctuates. The opening and closing device further includes a friction member located at least at one position between relatively movable facing surfaces of the immovable portion, the drive gear, the driven gear, and the dynamic power transmission mechanism.
    Type: Application
    Filed: April 24, 2003
    Publication date: February 5, 2004
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yasuhisa Inaba, Katsuaki Kadoike, Masumi Nishikawa, Satoshi Isobe, Hideyuki Nagai, Masahiro Kojima
  • Patent number: 6647814
    Abstract: A selective drive mechanism comprises a driven drive shaft (2), a drive nut (4), locking means (6) and an operable control arm (10). The drive nut (4) is disposed about the drive shaft (2) and is adapted to be selectively driven by the drive shaft (2). The locking means (6) is associated with the drive nut (4) and drive shaft (2) and comprises a helical coil spring mounted about said drive shaft (2). The operable control arm (10) is arranged to selectively engage with and operate the locking means (6). The mechanism (3) is arranged such that with the control arm (10) in a first position the locking means (6) is arranged to lock the drive nut (4) to the drive shaft (2) so that the relative positions of the drive nut (4) and drive shaft (2) are fixed. With the control arm (10) however in a second position the locking means (6), drive nut (4) and drive shaft (2) are arranged so that the drive nut (4) can move relative to the drive shaft (2).
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: November 18, 2003
    Assignee: Lear Corporation
    Inventor: Hugh Christopher
  • Patent number: 6619460
    Abstract: A brake arrangement for a machine that includes a locking element adapted to engage with an output shaft from a gearbox. The gearbox comprising at least two gearwheels utilized to obtain different gears. A gear clutch is provided for each gearwheel and is adapted to engage and disengage a respective gearwheel depending on the operating conditions of the machine. A control unit is arranged to control the gear clutches so that the gear clutches simultaneously engage at least two of the gearwheels thus to braking the output shaft. The control unit is adapted to control the locking element so that the locking element engages with the output shaft when the output shaft is at a standstill thereby causing the output shaft to be prevented from rotating when the locking element engages with the output shaft.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: September 16, 2003
    Assignee: Volvo Wheel Loaders AB
    Inventors: Sven-Åke Carlsson, Bo Vigholm
  • Patent number: 6471027
    Abstract: Parking brake, notably for automatic transmissions of motor vehicles, which is released via hydraulic pressure acting on a spring accumulator (3) and which is additionally held in the released state by a locking system (13) is actuated by a magnet (5) through which a current flows. The locking system (13) is kept activated and thus the parking brake released until the magnet (5) in the position in which the locking system (13) is actuated, has a power consumption lower than necessary for loading the locking system (13).
    Type: Grant
    Filed: January 25, 2001
    Date of Patent: October 29, 2002
    Assignee: ZF Friedrichshafen AG
    Inventors: Georg Gierer, Uwe Rühringer, Jürgen Mittelberger
  • Publication number: 20020144876
    Abstract: A torque limiting device for limiting torque applied to a shaft comprises an input shaft, an output shaft, and a clutch arrangement having input and output clutch elements coupled to the input and output shafts respectively. One of the clutch elements is axially moveable with respect to the other clutch element in response to a torque being applied to the output shaft which is in excess of a predetermined torque limit. An indicator arrangement is arranged to provide an indication that the torque applied to the output shaft exceeds the predetermined torque limit and to provide a further indication of the direction of rotation of the input shaft when the predetermined torque limit is exceeded.
    Type: Application
    Filed: March 1, 2002
    Publication date: October 10, 2002
    Inventor: John Herbert Harvey
  • Patent number: 6431525
    Abstract: A winch mechanism that is capable of sustained, heavy load operation comprises a frame, a ratchet, and a pawl for cooperative engagement with a pinion and a drum gear. The frame includes a plurality of apertures positioned proximate to the pawl axle, one aperture for each mode of operation of the winch mechanism. Pawl position relative to the pinion is defined by the position of a ratchet plug and the apertures in the frame. The winch mechanism includes a forward-engaged mode, a reverse-engaged mode, and a free-spooling mode. A wave washer urges the ratchet plug into one of the apertures once the ratchet mode is determined.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: August 13, 2002
    Assignee: Fulton Performance Products, Inc.
    Inventor: Michael J. Roll
  • Patent number: 6415675
    Abstract: A gear driven slide-out system has a radially fixed gear rack which can be slid axially into or out of engagement with a gear in a manual gearbox which is in driving engagement with the drive shaft. The fixed gear rack is biased into engagement so as to lock the drive shaft and is disengaged by a hand operated rotary cam.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: July 9, 2002
    Assignee: Actuant Corporation
    Inventors: Robert H. Schneider, Jeffrey N. Ashbeck
  • Publication number: 20020079190
    Abstract: To provide an inexpensive parking lock mechanism for a countershaft transmissions, the transmission shaft is locked relative to a bearing outer race of a tapered roller bearing. This bearing outer race is rotationally fixed relative to the transmission housing and one of two tapered roller bearings which are mutually arranged in an X and support the transmission shaft.
    Type: Application
    Filed: November 30, 2001
    Publication date: June 27, 2002
    Inventor: Hans Burger
  • Patent number: 6332523
    Abstract: A brake mechanism for braking an axle shaft rotatably supported within an axle housing. A pair of arcuate brake pads are pivotally pinned within the axle housing such that each of the arcuate brake pads can pivot from an brake position engaging the axle shaft and a free position allowing the axle shaft to rotate freely. The arcuate brake pads are spring biased to the free position allowing axle rotation. A simply pulley system is arranged within the axle housing to allow remote actuation of the arcuate brake pads forcing the brake pads into the brake position to frictionally engage the axle shaft thereby providing a braking force. The axle shaft may be splined to engage a corresponding reverse spline profile formed on the inner surface of the arcuate brake pads to provide a positive braking force to lock the shaft preventing rotation. The brake arrangement is preferably employed to brake an input shaft in a differential assembly or in any drive shaft of a transfer case.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: December 25, 2001
    Assignee: Spicer Technologies, Inc.
    Inventors: Paul D. Elwood, Eric W. Swardson