Toothed Planet Pinion Has Smooth Bearing Surface Engaging Raceway On Sun Or Orbit Gear Patents (Class 475/335)
  • Patent number: 10107384
    Abstract: A Ravigneaux planetary carrier assembly is provided for accommodating pinion gears of an automatic transmission. The carrier assembly comprises a powder metal carrier member including a carrier plate having a plurality of integral carrier legs extending therefrom, and a powder metal cover member including a cover plate having a plurality of integral cover legs extending therefrom. The carrier assembly is arranged such that respective ends of the carrier legs and ends of the cover legs are aligned with and brazed to one another, defining an interior of the carrier assembly configured to house the pinion gears.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: October 23, 2018
    Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., AISIN AW Co., Ltd.
    Inventors: Shail N. Shah, Nicholas S. Vernon, Shinji Oita
  • Patent number: 9523411
    Abstract: Disclosed is a planetary gear reducer for a vehicular steering apparatus. The planetary gear reducer includes: a sun gear, to which a steering shaft is joined; a planetary gear circumscribing the sun gear; a carrier, to which a rotary shaft of the planetary gear is joined; a ring gear, in which the planetary gear is inscribed; and backlash compensation members. The backlash compensation members are coupled to one or more of the sun gear, the planetary gear, and the ring gear such that the backlash compensation members are rotated in a state where they are in close contact with each other.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: December 20, 2016
    Assignee: MANDO CORPORATION
    Inventors: Kyung Sub Shin, Jung Sik Park, Han Sang Chae
  • Patent number: 8483918
    Abstract: A method of operating a transmission (1) with at least one interlocking shift element (F) having at least two shift element halves that can be brought into interlocked engagement with one another. When a command is received to close the interlocking shift element (F), a current rotational speed difference between the shift element halves of the interlocking shift element (F) and the current positions of the shift element halves are determined. If the rotational speed difference is smaller than a first speed difference threshold value and if a tooth-on-tooth position has occurred at the interlocking shift element (F), then to release the tooth-on-tooth position, the actuation force is changed to a release level at which a rotational speed difference above a second speed difference threshold value is produced between the shift element halves.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: July 9, 2013
    Assignee: ZF Friedrichshafen AG
    Inventors: Jorg Arnold, Valentine Herbeth, Georg Mihatsch
  • Publication number: 20110286846
    Abstract: A sun-and-planet speed-up gear includes a low-speed-stage sun-and-planet gearing and a high-speed-stage sun-and-planet gearing, in which an input shaft is connected to a low-speed-stage ring gear, the position of a shaft of a low-speed-stage planet gear is secured, a shaft of a low-speed-stage sun gear is connected to a high-speed-stage carrier, and an output shaft is connected to a high-speed-stage sun gear. In order to automatically center the low-speed-stage sun gear to prevent damage to gears and a bearing, a flange formed at a tip of the shaft of the low-speed-stage sun gear and a flange formed at a tip of a coupling that is directly attached to the high-speed-stage carrier or that is formed on the high-speed-stage carrier are coupled via a sleeve.
    Type: Application
    Filed: January 29, 2010
    Publication date: November 24, 2011
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Katsuhiko Shoda, Kenji Sakai, Kazutaka Suzuki
  • Patent number: 7601091
    Abstract: A gearing system using modular gear bearing components. Each component is composed of a core, one or more modules attached to the core and two or more fastening modules rigidly attaching the modules to the core. The modules, which are attached to the core, may consist of gears, rollers or gear bearing components. The core orientation affects the orientation of the modules attached to the core. This is achieved via the keying arrangement of the core and the component modules that attach to the core. Such an arrangement will also facilitate the phase tuning of gear modules with respect to the core and other gear modules attached to the core.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: October 13, 2009
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: John M. Vranish
  • Patent number: 7594872
    Abstract: An automatic shift manual transmission equipped with a forward shifter for forward stage shifting, a reverse shifter for reverse stage shifting, an actuator rod carrying the forward shifter and the reverse shifter , and an actuator to operate the actuator rod according to shift operations of a shift lever, wherein a shifter length of the reverse shifter is substantially the same as the that of the forward shifter, and a reverse stage shift stroke is greater than a forward stage shift stroke by the difference in an operating measurement of the actuator rod.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: September 29, 2009
    Assignee: Aichi Machine Industry Co., Ltd.
    Inventor: Yusuke Kasuya
  • Patent number: 7544146
    Abstract: A gear bearing having a first gear and a second gear, each having a plurality of teeth. Each gear operates on two non-parallel surfaces of the opposing gear teeth to perform both gear and bearing functions simultaneously. The gears are moving at substantially the same speed at their contact points. The gears may be roller gear bearings or phase-shifted gear bearings, and may be arranged in a planet/sun system or used as a transmission. One preferred embodiment discloses and describes an anti-backlash feature to counter “dead zones” in the gear bearing movement.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: June 9, 2009
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: John M. Vranish
  • Patent number: 7537541
    Abstract: The disclosed gear bearing systems generally include first and second gear bearings having gear teeth, wherein the gear bearings are coupled together axially and the alignment and position of the gear bearings may be set substantially independently of the alignment and position of their gear teeth.
    Type: Grant
    Filed: April 11, 2006
    Date of Patent: May 26, 2009
    Assignee: Raytheon Company
    Inventors: Christopher Owan, Charles De Lair
  • Patent number: 7331895
    Abstract: A composite planetary speed reduction device (1), wherein gears (11), (12), and (13) and rollers (21), (22), and (23) forming a planetary gear speed reduction mechanism (10) and a planetary roller speed reduction mechanism (20) are integrally rotated around a common rotating center axis, respectively. The radius of the sun roller (21) is larger by ?r1 than the radius r1 of the working pitch circle of the sun gear (11), the radius r21 of the working pitch circle of the planetary gear (12) meshing with the sun gear (11) and the radius r23 of the working pitch circle of the planetary gear (12) meshing with an internal gear (13) are different from each other, and the radius of the planetary roller (22) is smaller by ?r1 than the radius r21 of the working pitch circle of the planetary gear (12).
    Type: Grant
    Filed: December 13, 2004
    Date of Patent: February 19, 2008
    Assignee: Harmonic Drive Systems Inc.
    Inventor: Kohei Hori
  • Patent number: 7325638
    Abstract: A motor vehicle having a primary internal combustion engine is equipped with a secondary engine and an electric motor to supplement the power produced by the primary engine. The primary engine provides power for acceleration and hill climbing. When in a cruising mode of travel, the primary engine is deactivated, and the secondary engine, which is smaller and more fuel-efficient than the primary engine, provides the driving power. The electric motor adjustably augments the power provided by the secondary engine.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: February 5, 2008
    Inventor: Gregorio M. Belloso
  • Patent number: 7244214
    Abstract: A speed change device has an input member rotatable in opposite directions to transmit higher torque as its rotation angle becomes larger, and a variable angle-ratio change mechanism including rollers and teethed wheels that are arranged in parallel to each other. The rollers and teethed wheels are respectively connected to rotate together with each other. The teeth of the wheels have a clearance on a pitch circle between their adjacent teeth so that the clearance is larger than a slip amount of the rollers in a low torque range where the rollers transmit low torque with bypassing the wheels in a normal operation. The wheels are engaged with each other to transmit high torque in a high torque range where the high torque is applied in an exceptional operation and the rollers slip larger than the slip amount in the low torque range.
    Type: Grant
    Filed: February 3, 2005
    Date of Patent: July 17, 2007
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Osamu Shimoyama, Jun Sugihara, Tsuyoshi Sakuma
  • Patent number: 7070402
    Abstract: An integrated speed reducer and gerotor pump is disclosed. The device comprises a motor, a speed reducer, and a gerotor pump. The motor provides torque at an elevated speed. The speed reducer is coupled with the motor and converts the torque at an elevated speed into torque at a reduced speed. The gerotor pump is coupled with the speed reducer and uses the torque at the reduced speed for pumping fluids.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: July 4, 2006
    Assignee: The Timken Company
    Inventors: Xiaolan Ai, Geoffrey Bishop
  • Patent number: 6994651
    Abstract: An epicyclic gear system has a sun gear, a ring gear, and planet gears between the sun and ring gears. In addition, it has a carrier including a carrier flange offset axially from the planet gears and carrier pins that project from the flange into the planet gears, each with a shank anchored to the flange, a head remote from the flange, and a groove between the shank and head. Between the planet gears and the carrier pins are bearings, each including an inner race and rollers between the inner race and planet gear. Whereas the carrier pins are cantilevered from the carrier flange, the inner races are cantilevered from the heads of the carrier pins. The grooves in the pins enhance pin deflection, so that the axes about which the planet gears rotate remain parallel to the central axis of the system.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: February 7, 2006
    Assignee: The Timken Company
    Inventors: Gerald P. Fox, Eric Jallat
  • Patent number: 6981930
    Abstract: An integrated electric motor and traction drive is disclosed. The device comprises an electric motor and a traction drive. The electric motor provides power at a high angular velocity to a sun roller. The sun roller transfers the power to the traction drive which reduces the power to a lower angular velocity and delivers it via an output shaft.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: January 3, 2006
    Assignee: The Timken Company
    Inventors: Xiaolan Ai, Geoffrey Bishop
  • Patent number: 6960147
    Abstract: A planetary gear comprising a central, rotatable input/output shaft (1a), an elastic outer ring (4) which when being elastically deformed encloses and presses at least three planet wheels (6, 12) in the form of rollers radially against a centrally mounted sun shaft (2), which extends axially in alignment with the input/output shaft (1a). The planet wheels (6, 12) have central holes and are rotatably mounted on stays (7, 13), the centre lines of the stays (7, 13) being parallel with the sun shaft (2). At least two (12) of the planet wheels have substantially coinciding centres with the stays (13) associated with the planet wheels (12), while the planet wheel or other planet wheels (6) as well as the associated stay or stays (7) is/are constructed such that the centre lines of the stays are positioned a given distance closer to the sun wheel (2) than the axes of the planet wheels (6) when the planet wheels (6) engage the sun shaft (2).
    Type: Grant
    Filed: January 21, 2002
    Date of Patent: November 1, 2005
    Assignee: Roulunds Rotrex A/S
    Inventor: Anders Peter Kolstrup
  • Publication number: 20040082432
    Abstract: A carrier C is integrally formed of a pair of flanges opposed to each other and designed to rotatably support rotating bodies therebetween and a plurality of joints for connecting the flanges. A groove is formed on the border between the flanges and the joints, and openings are made among the joints. Engagement holes for rotatably supporting rotational shafts of rotating bodies are made in the flanges.
    Type: Application
    Filed: October 22, 2003
    Publication date: April 29, 2004
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, MEG INC.
    Inventors: Takashi Suzumura, Keiichi Matsunaga
  • Patent number: 6458058
    Abstract: A speed reducer in a portable electric tool is specifically referred to a powered tool for automotive repair with lighter weight and 12V direct current motor. The speed reducer comprises a casing to be attached by the 12V direct current motor, an end planetary gear set driven by the motor, and an output shaft rotary attached to the casing and driven by the planetary gear set. The speed reducer is characterized in that the output shaft at an end thereof provides an internal gear disk with internal circular teeth to mesh with two oppositely parallel positioned over pins provided on each gear of end planetary gear set. Hence, the output shaft can be driven to rotate by the planetary gear set instead of gears of the planetary gear set directly meshing with the output shaft. In this way, the disadvantage of loosening apart easily resided in the prior art can be corrected and the torque of output shaft can be increased greatly for saving the effort of user.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: October 1, 2002
    Inventor: Chun-Fa Fu
  • Patent number: 6344009
    Abstract: The gear consists of a housing (12) to which a drive motor (10) is flanged. Its shaft (1) carries a sun wheel (2) on which multiple planets (3) roll off. The planets (3) are positioned on a planetary carrier (6) which is rigidly connected to the output shaft (9). The shaft (9) is supported in the housing (12) coaxial to the shaft (1). Mounted to the housing (12) is a flange (17) of a cup-shaped annular wheel (8). Its lower rim (16) has a running surface (7) inside, on which the planets (3) roll off. The diameter of the running surface (7) is smaller than the sum of the diameter of the sun wheel (2) and twice the diameter of the planets (3), so that the rim (16) is elastically deformed. The planets (3) are supported rigidly in the circumferential direction and flexibly in the radial direction on the planetary carrier (6). Through this implementation, a backlash-free, rotationally very rigid gear is obtained with which high torques can be transferred in smooth operation.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: February 5, 2002
    Assignee: Reishauer AG
    Inventor: Walter Wirz
  • Patent number: 6338691
    Abstract: A planetary gear transmission has two or more planetary gear sets in the gear train. Each planetary gear set comprises a sun gear mounted on a sun shaft with the sun gear engaging a plurality of planet gears mounted on a planet gear carrier with the plurality of planet gears engaging a ring gear mounted on the transmission housing. Each gear of the planetary gear transmission is a helical cut gear. Sun gears and/or ring gears are mounted for axial movement with respect to the transmission. Thrust imbalances on the sun gears and/or ring gears resulting from uneven loading and the helical cut result in sun gears and/or ring gears moving in the axial direction to eliminate the thrust imbalances and thereby resulting in equal loading or power sharing amongst the planetary gear sets.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: January 15, 2002
    Assignee: Harrier Technologies, Inc.
    Inventor: William Bruce Morrow
  • Patent number: 6132330
    Abstract: This includes a first rotatable gear (such as a sun gear) and a second rotatable gear (such as a ring gear) spaced from the first rotatable gear. A rotatable inner gear is positioned between and meshes with both the first rotatable and the second rotatable gear. A force is selectively applied between the inner gear and the first gear as a second force is applied between the inner gear and the second gear. By properly selecting the magnitude of the first and second forces one can obtain a greater rotational movement of either the first gear or the second gear.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: October 17, 2000
    Inventor: Aaron D. Leggett
  • Patent number: 5941810
    Abstract: Centrifugal separator comprising a drum (8) driven in rotation by a main electric motor (1), via a machine pulley (5), a first drive shaft (6) and a reducer (7), a screw (17), surrounded by the drum and driven in rotation by a secondary electric motor (9), via a second and third drive shaft (10, 16), coaxial with the first shaft (6), wherein a module is mounted between the secondary electric motor (9) and the reducer (7) comprising a casing (11), a sleeve (13) and a planetary hub (15), the hub passing through the casing and comprising a first planetary gear (25) rigidly attached in rotation to the hub, the sleeve (13) being disposed around a part of the hub (15) and comprising, rigidly attached in rotation, a second planetary gear (26), at least one axle (27) being mounted parallel to the hub (15) and comprising two satellite gears (29,30,31,32), rigidly attached in rotation to the axle, which engage with the first planetary gear (25) and the secondary planetary gear (26) respectively, at least one of the sai
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: August 24, 1999
    Assignee: Guinard Centrifugation
    Inventor: Daniel Gay
  • Patent number: 5170674
    Abstract: An improved power take-off arrangement for a transfer case which is readily incorporated into a planetary gear reduction assembly without necessitating excessive redesign of the transfer case. The power take-off arrangement includes utilization of a bearing support member for eliminating excessive eccentric loading during power take-off operation while providing improved centering and piloting capabilities.
    Type: Grant
    Filed: January 15, 1992
    Date of Patent: December 15, 1992
    Assignee: New Venture Gear, Inc.
    Inventors: Randolph C. Williams, Robert J. Wilson
  • Patent number: 5099704
    Abstract: An improved power take-off arrangement for a transfer case which is readily incorporated into a planetary gear reduction assembly without necessitating excessive redesign of the transfer case. The power take-off arrangement includes utilization of a bearing support member for eliminating excessive eccentric loading during power take-off operation while providing improved centering and piloting capabilities.
    Type: Grant
    Filed: April 19, 1991
    Date of Patent: March 31, 1992
    Assignee: New Venture Gear, Inc.
    Inventors: Randolph C. Williams, Robert J. Wilson
  • Patent number: 5098358
    Abstract: A planetary gear includes a middle planetary gear part, a disc part on one side of the planetary gear part having a radius smaller than a radius of the tooth root circle of the planetary gear part and another disc part on another side of the planetary gear part having a radius bigger than a radius of a tooth edge circle of the planetary gear part. An internal gear includes a middle internal gear part, an inner cylindrical part on one side of the internal gear having a radius smaller than a radius of a tooth edge circle of the internal gear part and another inner cylindrical part on another side of the internal gear having a radius bigger than a radius of a tooth root circle of the internal gear part. The planetary smaller disc parts can rollingly engage the smaller inner cylindrical part of the internal gear. The planetary bigger disc parts can rollingly engage the bigger inner cylindrical part of the internal gear. The planetary gear part and two disc parts are unified in a body.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: March 24, 1992
    Assignee: Matex Co., Ltd.
    Inventor: Shoji Igaku
  • Patent number: 5074832
    Abstract: A modified planetary gear assembly includes a sun gear, planetary gears, an internally-toothed ring gear and a carrier, and can either transmit or not transmit torque from the sun gear to the carrier. The internally-toothed ring gear has outer peripheries on both sides suitable for being supported by a bearing device and a middle groove on the outer surface having timing teeth shaped around the groove. The peripheries are supported by a bearing device. A stopper device which is movable in a radial direction is mounted at a point around the middle groove. When the stopper device is moved forward to engage with the timing tooth, the internally-toothed ring gear is fixed and torque is transmitted from the sun gear to the carrier. When the stopper device is retracted, the internally-toothed ring gear freely rotates and no torque is transmitted. Thus, there are two states of torque transmission.
    Type: Grant
    Filed: June 1, 1990
    Date of Patent: December 24, 1991
    Assignee: Matex Co., Ltd.
    Inventor: Shoji Igaku