Planet Pinion Supported By Roller Bearings Patents (Class 475/348)
  • Patent number: 11022210
    Abstract: A planet wheel shaft includes a bearing portion for acting as a slide-bearing in cooperation with a planet wheel of a planetary gear. On at least one axial region of the bearing portion, a cross-sectional shape deviates from a circular shape so that the bearing portion is thicker in a first direction than in a second direction perpendicular to the first direction. The deviation from the circular shape widens a wedge-shaped gap that is between the bearing portion and the planet wheel when there is load in the first direction. This facilitates oil supply to an area where hydrodynamic oil pressure is formed for carrying load in the first direction because the widening the wedge-shaped gap compensates for narrowing the gap due to ovalization of the planet wheel caused by load in the second direction.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: June 1, 2021
    Assignee: MOVENTAS GEARS OY
    Inventor: Tuomo Kontinen
  • Patent number: 10955045
    Abstract: A planet carrier for an epicyclic gearbox, the planet carrier comprising: a single piece carrier body arranged to support a plurality of gears of the epicyclic gearbox; and an opening in a wall of the carrier body; wherein: in a cross-section of the carrier body in a plane that is orthogonal to the longitudinal axis of the carrier body and at a longitudinal position along the carrier body that does not comprise the opening, the carrier body is substantially annular; and the opening is arranged such that the gears that the carrier body is arranged to support can be passed entirely through the opening.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: March 23, 2021
    Assignee: ROLLS-ROYCE PLC
    Inventor: Giles E Harvey
  • Patent number: 10920869
    Abstract: A system, a differential, and method for maintaining temperature of a fluid circulating in a housing enclosing a gear system, contains a first heat exchanger positioned interior the housing. A first insulation layer is coupled to the housing and having a face in complete contact with the housing. A second fluid passageway formed between the outer surface of the gear and the primary heat transfer surface for the flow of the fluid circulating within the housing therethrough, wherein the fluid is brought into heat transfer relationship with the first heat exchange fluid flowing through said heat exchanger by means of rotation of the gear system.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: February 16, 2021
    Inventors: Ihab Edward Gerges, Dario Bettio, Michael J. R. Bardeleben
  • Patent number: 10816087
    Abstract: A planetary gearing includes a sun gear; a plurality of planet gears, a ring gear; and a plurality of planet pins, wherein respectively one planet pin is arranged inside a planet gear, and the planet pin and the planet gear form a lubricated journal bearing. The planet pin includes an axial bore and an inner surface that comprises an axially forward end and an axially rearward end. The inner diameter of the axial bore of the planet pin varies between the axially forward end and the axially rearward end of the inner surface and has a maximum at least at one axial end. The planet pins respectively form a crowning at their abutment surface such that their outer diameter decreases from a maximum outer diameter towards at least an axial end of the abutment surface, and has a minimum at the axial end.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: October 27, 2020
    Assignees: ROLLS-ROYCE DEUTSCHLAND LTD & CO KG, ROLLS-ROYCE PLC
    Inventors: Michael Nique, Christopher Campbell, Mark Spruce
  • Patent number: 10766611
    Abstract: A helicopter rotor transmission in which the average lubricant monitoring and replenishment intervals are to be significantly increased. The helicopter rotor transmission has a central cavity, in which runs a bearing mast that is fixed in a locationally and rotationally manner, which is held passing through the gear housing at least partially in the direction of the central axis. An internally toothed gear ring of a rotatable rotor mast can be rotated about the central axis, with fixed rotation of the planetary gears about their planetary gear axes, such that the rotor mast can be set in rotation by means of a gear ring driver attached to the gear ring.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: September 8, 2020
    Assignee: KOPTER GROUP AG
    Inventors: Roman Köstli, Martin Stucki
  • Patent number: 10760678
    Abstract: A mechanical transmission device having a planet carrier and at least two planets mounted on the planet carrier by means of respective rotation shafts. The device includes a stop for stopping movement of the various rotation shafts in axial translation.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: September 1, 2020
    Assignee: SAFRAN ELECTRONICS & DEFENSE
    Inventors: Bertrand Sevagen, Nicolas Ravoux, Etienne Merlet, Zakaraya Imounssi
  • Patent number: 10704390
    Abstract: Disclosed herein is a revised version of housing wheel engine with method of hypotrochoid that patented U.S. Pat. No. 7,730,869. It keeps the main functions and also provides not only cases Rr?3 but also cases Rr2 and Rr1, which means it has been able to develop engines as well as four pistons and two pistons, which the previous version cannot do.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: July 7, 2020
    Inventor: Lance Yan Lee
  • Patent number: 10683927
    Abstract: A planetary transmission having a planet carrier with a carrier body and a plurality of carrier pins. The carrier body includes a pair of carrier plates, each of which having pin bosses that extend outwardly from a remaining portion of the carrier plate. The pin bosses on at least one of the carrier plates define an exterior surface with at least one step so that portions of the exterior surface of the pin bosses are spaced apart in an axial direction. The carrier pins have an axial ends with recesses formed therein such that each axial end of each carrier pin terminates in a thin wall section. The carrier pins are received through the carrier plates and the thin wall sections are deformed against the exterior surfaces of the pin bosses to retain the carrier pins to the carrier body.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: June 16, 2020
    Assignee: American Axle & Manufacturing, Inc.
    Inventor: Paul J. Valente
  • Patent number: 10683801
    Abstract: A system includes a gas turbine system having a turbine combustor, a turbine driven by combustion products from the turbine combustor, and an exhaust gas compressor driven by the turbine. The exhaust gas compressor is configured to compress and supply an exhaust gas to the turbine combustor. The gas turbine system also has an exhaust gas recirculation (EGR) system. The EGR system is configured to recirculate the exhaust gas along an exhaust recirculation path from the turbine to the exhaust gas compressor. The system further includes a main oxidant compression system having one or more oxidant compressors. The one or more oxidant compressors are separate from the exhaust gas compressor, and the one or more oxidant compressors are configured to supply all compressed oxidant utilized by the turbine combustor in generating the combustion products.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: June 16, 2020
    Assignees: General Electric Company, ExxonMobil Upstream Research Company
    Inventors: Richard A. Huntington, Franklin F. Mittricker, Loren K. Starcher, Sulabh K. Dhanuka, Dennis M. O'Dea, Samuel D. Draper, Christian M. Hansen, Todd Denman, James A. West
  • Patent number: 10508731
    Abstract: A planet gear includes a pin and an annular planet gear rim. The pin has a pin radius. The pin includes a pin outer surface. The annular planet gear rim has an inner radius and an outer radius. The annular planet gear rim includes an inner surface and an outer surface. The inner surface and the pin outer surface define a clearance therebetween. The clearance is greater than 0 when a radial force is applied to the planet gear.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: December 17, 2019
    Assignee: General Electric Company
    Inventors: Darren Lee Hallman, Donald Albert Bradley, Changjie Sun, Bugra Han Ertas
  • Patent number: 10408304
    Abstract: A gear having an axis of rotation includes a gear rim, with at least a portion of the gear rim configured to receive a load and define a loaded gear rim arc corresponding to the portion of the gear rim. A bearing pin extends axially through the gear rim, the gear rim and the bearing pin defining a roller element gap therebetween. The gear rim is configured to define a loaded roller element gap arc substantially concentric with the loaded gear rim arc, the loaded element gap arc having a loaded roller element gap arc length. The gear rim is further configured to retain a loaded bearing portion of the bearing within the portion of the roller element gap such that a loaded bearing portion length is in a range from and including about 75% to and including about 125% of the loaded roller element gap arc length.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: September 10, 2019
    Assignee: General Electric Company
    Inventor: Darren Lee Hallman
  • Patent number: 10253817
    Abstract: A plain bearing assembly of a rotational element on a bearing bolt includes a bearing bolt, a bearing sleeve, which is non-rotatably mounted on said bolt and which comprises a first radial bearing surface formed on its outer periphery, and a rotational element which is rotatably mounted on the bearing sleeve and which is mounted on the first radial bearing surface via a second radial bearing surface in such a way that it can slide. Axial bearing washers, which project radially beyond the bearing sleeve, are secured to both end faces of the rotational elements. The washers run against axial bearing surfaces of the bearing sleeve, and axial flanks of the bearing sleeve form axial bearing surfaces for the axial bearing washers.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: April 9, 2019
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Michael Plogmann, Sebastian Pachner, Sven Claus, Markus Soyka
  • Patent number: 10215259
    Abstract: A planetary reduction gear device has first and second planetary gears meshed with a sun gear and an internal at different locations in a direction of an axis line; and a carrier assembly for supporting the first and second planetary gears. The carrier assembly has a first planetary carrier for supporting the first planetary gears and a second planetary carrier for supporting the second planetary gears. The first and second planetary carriers are fixed coaxially with each other in the direction of the axis line so as to rotate integrally. A planetary reduction gear device having a large torque capacity can be obtained.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: February 26, 2019
    Assignee: HARMONIC DRIVE SYSTEMS INC.
    Inventor: Norio Shirokoshi
  • Patent number: 9897195
    Abstract: A planetary gear drive has needle roller bearings of full roller type as planetary gear bearings for planetary gears. The needle roller bearings have lubrication mechanisms, respectively. Each lubrication mechanism has an annular grease retaining groove. The grease retaining groove is formed on an inner peripheral surface (an outer-race-side raceway surface) of the shaft hole of each planetary gear. Poor lubrication can be prevented from occurring when needle roller bearings of full roller type are employed as the planetary gear bearings.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: February 20, 2018
    Assignee: HARMONIC DRIVE SYSTEMS INC.
    Inventor: Norio Shirokoshi
  • Patent number: 9297364
    Abstract: Bogie plate (10) integrated or fastened to the planetary carrier (9) of a planetary gearbox (4) for a wind turbine (1), which, using a locking element (12) prevents faults in the gearbox (4), at moments of low torque, in which there is a grinding of the housing (13) of the planetary shaft (11) around a shaft perpendicular to the bogie plate (10).
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: March 29, 2016
    Assignee: GAMESA INNOVATION & TECHNOLOGY, S.L.
    Inventors: Patrick Saenz De Ugarte Sevilla, Jose M. Zabala Zabala
  • Patent number: 9249876
    Abstract: Provided is a planetary gear train for transmission of e-bike motor, including: a carrier protrusively formed in a center with a stator axis insertion boss provided with a stator axis insertion groove in a shape corresponding to that of the stator axis for insertion of the stator axis, and mounted with a plurality of gear installation units; a plurality of planetary gears interposed rotatably mounted at an upper surface of the gear installation unit of the carrier; and a fixing pin rotatably mounting the plurality of planetary gears on the gear installation units, wherein the fixing pin includes a pin head inhibiting the planetary gears from deviating.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: February 2, 2016
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Hongshik Yun
  • Patent number: 9188183
    Abstract: An electric linear motion actuator includes planetary rollers mounted between the radially inner surface of an outer ring member and the radially outer surface of a rotary shaft, and a carrier rotatable about the rotary shaft and including radially movable roller shafts rotatably supporting the respective planetary rollers. Elastic rings each having circumferentially separate ends are each wrapped around the roller shafts to radially inwardly bias the roller shafts, thereby bringing the respective planetary rollers into elastic contact with the radially outer surface of the rotary shaft. Each elastic ring is prevented from rotating relative to the roller shafts, thereby preventing one of the roller shafts from being axially aligned with the gap between the circumferential separate ends, causing the elastic ring to be radially compressed and thus making it impossible for the elastic rings to radially bias the roller shafts.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: November 17, 2015
    Assignee: NTN CORPORATION
    Inventors: Makoto Yasui, Makoto Muramatsu, Masaaki Eguchi, Tatsuya Yamasaki, Tomomi Goto
  • Patent number: 9017203
    Abstract: A gear-train for transferring torque from multiple power sources includes first, second, and third input members, and an output member. The first and second input members rotate about a first axis, the third input member rotates about a second axis, and the output member rotates about a third axis. The gear-train additionally includes a first gear-set connected to the first input member. The gear-train also includes a second gear-set connected to the second input member. The gear-train additionally includes an intermediate shaft that rotates about a fourth axis. Furthermore, the gear-train includes a third gear-set connected to the intermediate shaft. In the third gear-set, first member is connected to the intermediate shaft and to the third input member, second and third members are set coaxially relative to the intermediate shaft and configured for asynchronous rotation with each other, and the third member is also connected to the output member.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: April 28, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Goro Tamai, Shawn H. Swales, Norman Schoenek
  • Patent number: 8986146
    Abstract: A reduction gear with epicyclic gear train including an annulus gear, and at least one planet gear rolling on the annulus gear and able to rotate about a planet spindle borne by a planet carrier is provided. The planet spindle is mounted such that it can itself rotate about its axis relative to the planet carrier. The reduction gear is suitable for mounting in a high bypass ratio jet engine for driving the fan thereof.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: March 24, 2015
    Assignee: SNECMA
    Inventor: Francois Gallet
  • Patent number: 8920284
    Abstract: An epicyclic gear system (A) includes a sun gear (2), a ring gear (4) located around the sun gear (2) and planet pinions (6) located between the sun and ring gears (2,4). The planet pinions (6) rotate on a carrier (8) that includes flexpins (20) that are cantilevered from a wall (12) of the carrier (8) and sleeves (22) that are attached to the remote ends of the flexpins (20) and extend back over the flexpins (20) to create a double cantilever. Bearings (24) support the planet pinions (6) on the sleeves (22) so that the planet pinions (6) rotate about the flexpins (20). The double cantilever enables the flexpins (2) to flex such that the axes (Y) of the planet pinions (6) remain parallel to the common axis (X) of the sun and ring gears (2, 4). Each sleeve (22) h an integrated bearing race (44) and a bearing seat (42) that carries a separate bearing race (60).
    Type: Grant
    Filed: April 21, 2010
    Date of Patent: December 30, 2014
    Assignee: The Timken Company
    Inventor: Gerald P. Fox
  • Patent number: 8900092
    Abstract: A planetary gear mechanism converts rotational movement of a drive shaft into rotational movement of an output shaft. The mechanism includes a planetary gear carrier, a planetary gear, and a bearing arrangement. The bearing arrangement includes roller bearings spaced apart between the planetary gear and planetary gear carrier. Each roller bearing has an inner ring and outer ring. The bearing arrangement includes a ring to position the roller bearings on the planetary gear carrier and a collar to secure the planetary gear. The ring is on an outer face of the planetary gear carrier between the inner rings. The collar is on an inner face of the planetary gear between the outer rings. An intermediate ring on the inner face of the planetary gear positions the roller bearings. The intermediate ring has a cutout directed to the collar which corresponds to an axial length of the collar.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: December 2, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Dietmar Weist
  • Patent number: 8894537
    Abstract: A bushing for use in a planetary gear system has a cylindrical body portion defining a bore extending along a central axis to be received on a planetary gear shaft. A tab extends axially beyond a nominal body portion of the bushing and is received in a notch in a thrust washer adjacent to the bushing to prevent rotation of the thrust washer. A gear cage and an air turbine starter incorporating the bushing, along with a method of installing the bushing are also disclosed.
    Type: Grant
    Filed: January 3, 2011
    Date of Patent: November 25, 2014
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Dean A. Norem, Tye L. Klipp, Jeff A. Brown, Bradley A. Delmore, William C. Trommer
  • Patent number: 8882631
    Abstract: A gearbox for a wind turbine has a bearing arrangement positioned on the downwind side of a first stage planet carrier at a single locus. The planet carrier has a portion extending radially inwards and axially downwind from the planet gears. Thus, the weight of the gearbox is supported between the two theoretical support points of the pair of back to back tapered roller bearings at the downwind side of the first stage planet carrier. A member of unitary construction comprising gearbox flange, input shaft and first stage planet carrier, which can be cast as one piece, reduces the weight of this part compared to previous designs having separate components.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: November 11, 2014
    Assignee: Romax Technology Limited
    Inventors: Christopher James Blockley, David John Scott, Paul James Gibbs, Siu Yun Poon, Ketan Chandrakant Paua
  • Patent number: 8840512
    Abstract: A backlash-free planetary transmission device includes an outer ring of an eccentric sleeve rotatably fitted with a dual outer gear. One outer gear of the dual outer gear is meshed with a fixed pin gear with small teeth number difference, and the other outer gear is meshed with a power output pin gear with small teeth number difference. Each of the fixed pin gear and power output pin gear includes a roller. Profiles of teeth of the outer gears are respectively enveloped by profiles of the fixed pin gear and power output pin gear meshed therewith. The outer gears and rollers are in rolling mesh, to avoid sliding friction between meshed gear teeth. The dual outer gear contacts with the fixed pin gear and power output pin gear, with zero transmission error and zero backlash. The transmission device has high accuracy, low noise, high transmission efficiency, and long service life.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: September 23, 2014
    Assignee: University of Chongqing
    Inventors: Bingkui Chen, Wencui Yi, Chaoyang Li
  • Patent number: 8814746
    Abstract: A planetary gear system (P) includes a sun gear (2), a ring gear (4) a carrier (6) located between the sun and ring gears (2, 4), and planet pinions (8, 10) organized in two arrays and supported on flexpin assemblies (32, 34) in the carrier (6). All of the gearing is helical, with the sun and ring gears (2, 4) having their teeth arranged in at double helix angles (herringbone) and the planet gears (8, 10) at single helix angles. The pinions (8) of the one array engage the teeth of one angle on the sun and ring gears (2, 4) and the pinions (10) of the other array engage the teeth of the other angle on the sun and ring gears (2, 4). Torque transfers through the carrier (6) through two torque paths (a, b)—one to the flexpin assemblies (32) for one array and the other to the flexpin assemblies (34) of the other array—and the paths (a) is stiffer than the path (b). Owing to the helical cut of the teeth the planet pinions (8, 10) of the two arrays exert oppositely directed axial forces (A) on the sun gear (2).
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: August 26, 2014
    Assignee: The Timken Company
    Inventor: Gerald P. Fox
  • Publication number: 20140221150
    Abstract: Surface indentation and oil film shortage on rollers is prevented and longer service life of a roller bearing is achieved, by preventing wear debris from being caught and accumulated in pockets of a holder of the roller bearing. Positions and dimensional relations of the diameters of inner and outer ring raceways, the inner and outer diameters of the holder, and inner and outer protrusions which are provided to pillar parts of the holder to prevent the rollers from coming off are defined such that the inner and outer protrusions of the pillar parts always do not come into contact with the outer circumferential surfaces of the rollers in the state where the rollers and the holder are incorporated between inner and outer members. As a result, lubricant oil is smoothly circulated in gaps formed between the outer circumferential surfaces of the rollers and the pillar parts of the holder.
    Type: Application
    Filed: August 30, 2012
    Publication date: August 7, 2014
    Inventors: Tsutomu Nakagawa, Masashi Nishimura, Shinji Oishi
  • Patent number: 8747278
    Abstract: Planet carrier of an epicyclic gear system with planetary shafts which are connected fixedly to the planet carrier, onto which planet wheels are mounted rotatably using planetary bearings, the teeth of the planetary wheels being helical or chevron teeth, the planet carrier being of the cage type, and where at least two separate planetary wheels are mounted on each planetary shaft, each wheel of which being supported by at least one double-row tapered roller bearing, the outermost bearing ring of each double-row tapered roller bearing being integrated into the planetary wheel concerned.
    Type: Grant
    Filed: November 20, 2008
    Date of Patent: June 10, 2014
    Assignee: Hansen Transmissions International NV
    Inventor: Warren Gregory Smook
  • Publication number: 20140141931
    Abstract: A wheel drive unit comprises: a planetary gear mechanism including a planetary gear and an internally-toothed gear; a casing integrated with the internally-toothed gear, a wheel being attached to the casing, and the casing transmitting rotation of the internally-toothed gear to the wheel; a bearing fitted to an inner circumferential surface of the casing at a position more toward an interior of a vehicle than the planetary gear and rotatably supporting the casing. An inner diameter of an outer race of the bearing is larger than an outer diameter of the planetary gear.
    Type: Application
    Filed: November 14, 2013
    Publication date: May 22, 2014
    Applicant: Sumitomo Heavy Industries, Ltd.
    Inventor: Masayuki Ishizuka
  • Patent number: 8702558
    Abstract: A planetary gear transmission unit (10) includes a ring gear (17), a sun gear (18) and a planet carrier (19) driving a plurality of planet shafts (12) onto which planet gears (11) are rotatably mounted by way of planet bearings (13). The planet shafts are flexpin shafts (12) and each flexpin shaft (12) includes a pair of planet gears (11), each planet gear (11) of the pair being of the single helical type having a helix angle opposite to that of the other planet gear (11) of the pair. A gearbox (20) including a planetary gear transmission unit (10) according to embodiments of the invention and a wind turbine including such a gearbox (20) are also described.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: April 22, 2014
    Assignee: Hansen Transmissions International N.V.
    Inventor: Warren Smook
  • Publication number: 20140066245
    Abstract: A planetary transmission of a wind turbine includes a ring gear which has an internal toothing and at least one planetary gear which has an external toothing that meshes with the internal toothing of the ring gear. The planetary gear is rotatably supported on an axle by a bearing assembly. The bearing assembly includes at least one outer ring having a radially-outwardly-protruding radial projection and at least one set of rolling elements that roll on the outer ring. The planetary gear has a bore and a recess in the region of an axial end, which recess widens the bore. The outer ring is disposed in the bore of the planetary gear such that the radial projection of the outer ring engages into the recess of the planetary gear.
    Type: Application
    Filed: March 6, 2012
    Publication date: March 6, 2014
    Inventors: Frank Steinhaus, Stephan Buch
  • Patent number: 8647229
    Abstract: A method and apparatus for a transmission system selectively positioning sets of planet gear support bearings (50, 55, 80, 90) to achieve an optimized load distribution among a set of drive planet pinions (22) and a set of idler planet pinions (70) disposed in engagement between two reaction gears (30, 40) in the transmission system (A, A1), for splitting an applied load between at least two pathways between an input and an output.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: February 11, 2014
    Assignee: The Timken Company
    Inventors: Xiaolan Ai, Curt Orkin, Randy P. Kruse, Ryan Forbes, Matthew Wilmer, Bradley Smith, Neil Chiavaroli
  • Patent number: 8641569
    Abstract: A planetary gear reduction mechanism is provided in a housing for making up a revolving apparatus, and the planetary gear reduction mechanism is constituted by a sun gear, a plurality of planetary gears, and a carrier. Lubricating oil for lubricating the planetary gear reduction mechanism is stored in the housing. A doughnut-shaped guide member for covering meshing portions of the sun gear and the planetary gears and for receiving the lubricating oil scattered from the meshing portions and guiding it to planetary gear bearings is provided at an upper position of the planetary gear reduction mechanism. Hence, the lubricating oil which is scattered from the meshing portions of the sun gear and the planetary gears can be efficiently guided to the planetary gear bearings through the doughnut-shaped guide member.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: February 4, 2014
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Tomoharu Morita, Nobuo Uzawa, Takeshi Kurihara
  • Patent number: 8628449
    Abstract: A low mass, two piece planetary gear carrier having an integrated clutch housing comprises a first carrier flange and clutch housing and a second carrier flange which are secured together by a plurality of threaded fasteners extending through hollow dowels. A plurality of planet gears receive needle bearing assemblies which are, in turn, supported on pins or stub shafts. The stub shafts are retained in the carrier by transverse retaining pins received in the second carrier flange and extending into the shafts. Unitized washers are disposed between both faces of the planet gears and the flanges. The method of assembly is also a feature of the present invention.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: January 14, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Boris Burgman, David M. Zini, Derrick R. Black
  • Publication number: 20130324354
    Abstract: A gearbox includes a shaft input spherical bearing and a shaft output spherical bearing enabling the ring gear to float within the housing and not engage the housing. The shaft output spherical bearing permits angular displacement of the output shaft with respect to the longitudinal axis of said output shaft. A spline connection enables the ring gear to pivot with respect to the cover. Loads transmitted to the housing of the gearbox are not transferred to the gear systems and the gear systems self-align within the housing.
    Type: Application
    Filed: May 30, 2012
    Publication date: December 5, 2013
    Applicant: FAIRFIELD MANUFACTURING COMPANY, INC.
    Inventors: DAN E. PHEBUS, KENNETH E. CARLTON
  • Publication number: 20130237370
    Abstract: A gear arrangement for a planetary gearbox includes a planet carrier, a planet pin, a planet gear, bearing means located between the planet pin and the planet gear, the bearing means including a bearing ring, a retainer secured to the planet carrier by one or more bolts, and one or more shims located between the retainer and the planet pin. The planet pin is hollow and is in fluid communication with an inside surface of the bearing ring and with an inlet. This means that a fluid forced via the inlet and the hollow planet pin applies a radial force to the bearing ring, reducing the contact friction between the bearing ring and the planet pin and allowing an axial position of the planet pin to be adjusted to provide a correct preloading to the bearing means. This means that the bearing can be pre-set, in-situ using hydraulic actuator and oil injection.
    Type: Application
    Filed: March 11, 2013
    Publication date: September 12, 2013
    Applicant: ROMAX TECHNOLOGY LIMITED
    Inventor: Richard Smith
  • Patent number: 8523733
    Abstract: The present disclosure relates to a vehicle driveline differential with improved efficiency during vehicle cold starts, the differential includes: a pinion; and a pinion bearing journaled onto a shaft of the pinion. The pinion bearing includes a thermal-insulation sleeve.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: September 3, 2013
    Assignee: Ford Global Technologies, LLC
    Inventor: Robert Scott Lippert
  • Publication number: 20130157802
    Abstract: A planetary gear unit (21) of a gearbox of a wind turbine comprising a sun gear (27), planet gears (25, 25?), a ring gear (24), a planet carrier (29) and an outer casing (31); the ring gear (24) being mounted on the outer casing (31) ; the planet carrier (29) comprising a bogie plate (35) where planet gears (25, 25?) are rotatably mounted on planet shafts (41); the planet carrier (29) comprising a main body (51) and a backplate (53) which can be joined/disjoined to the main body (51) for facilitating the assembly/disassembly of the planetary gear unit (21); the planet carrier (29) being rotatably mounted on said outer casing (31) by means of a first bearing (72) in contact with said main body (51) at the rotor side and by means of a second bearing (73) in contact with said backplate (53) at the generator side.
    Type: Application
    Filed: December 12, 2012
    Publication date: June 20, 2013
    Applicant: GAMESA INNOVATION & TECHNOLOGY, S.L.
    Inventor: GAMESA INNOVATION & TECHNOLOGY, S.L.
  • Publication number: 20130116083
    Abstract: A planet carrier 100 has a member 110 which is resistant to buckling caused by torsional stress and which increases a torsional stiffness of the planet carrier 100, so that a torsion load is transmitted evenly from the input member 120 into the planet pins 104 without twisting the planet carrier 100.
    Type: Application
    Filed: November 6, 2012
    Publication date: May 9, 2013
    Applicant: ROMAX TECHNOLOGY LIMITED
    Inventor: ROMAX TECHNOLOGY LIMITED
  • Patent number: 8425374
    Abstract: A planetary gear unit includes a planet carrier having a backplate and being provided with planet shafts distributed uniformly around the planet carrier's axis and extending through bores in the backplate, each planet shaft rotatably supporting a pair of planet gears by planet bearings, the planet gears being mounted between a ring gear and a sun gear for mutual interaction. The planetary gear unit further includes a key provided in a keyway of the planet shaft and extending to the backplate for preventing the at least one planet shaft from rotating around its own axis. The key and keyway are provided at a location positioned between 45° and 270° in a clockwise direction around the circumference of the planet shaft, with 0° being defined as a point at the planet shaft circumference corresponding with the largest distance from the centre of the back plate seen from the rotor side onwards.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: April 23, 2013
    Assignee: Hansen Transmissions International N.V.
    Inventor: Warren Smook
  • Patent number: 8414448
    Abstract: A gear system, such as for use in a wind turbine, is disclosed. The gear system includes a carrier, a gear defining a central axis, and a pin extending along the central axis and coupling the gear to the carrier. The gear system further includes a roller bearing surrounding the pin, the roller bearing comprising a plurality of roller elements, and a journal bearing surrounding the pin.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: April 9, 2013
    Assignee: General Electric Company
    Inventors: James Henry Madge, Adam Daniel Minadeo, Priyangu Chunilal Patel
  • Publication number: 20130059694
    Abstract: A supporting structure for a planetary gear mechanism includes a planetary carrier, a first bearing, and a second bearing. The planetary carrier includes a rotation shaft and an arm portion. The rotation shaft extends in an axis direction to support a planetary gear of the planetary gear mechanism to be rotatable about a rotational axis along the axis direction. The rotation shaft includes a first end and a second end opposite to the first end along the rotational axis. The first and second bearings are disposed on a first side of the planetary gear in the axis direction. The planetary carrier is radially supported by the first and second bearings without a bearing which radially supports the planetary carrier in the casing and which is provided on a second side of the planetary gear in the axis direction.
    Type: Application
    Filed: September 3, 2012
    Publication date: March 7, 2013
    Applicant: HONDA MOTOR CO., LTD
    Inventors: Keiichi OOISO, Jun Aoki, Yoshio Akiba
  • Publication number: 20130052017
    Abstract: A gear system, such as for use in a wind turbine, is disclosed. The gear system includes a carrier, a gear defining a central axis, and a pin extending along the central axis and coupling the gear to the carrier. The gear system further includes a roller bearing surrounding the pin, the roller bearing comprising a plurality of roller elements, and a journal bearing surrounding the pin.
    Type: Application
    Filed: August 31, 2011
    Publication date: February 28, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: James Henry Madge, Adam Daniel Minadeo, Priyangu Chunilal Patel
  • Patent number: 8357070
    Abstract: A method of compensating for load-induced twisting of a gear assembly under load that includes a gear on a gear shaft, bearings on each side of the gear that support the gear shaft and a carrier fastened to a stationary support surface that mounts a proximal one of the bearings near the stationary support surface and mounts a distal one of the bearings away from the stationary support surface. The method includes the steps of determining the twisting deflection of a distal bearing axis of rotation for the distal bearing relative to a proximal bearing axis of rotation for the proximal bearing and offsetting the position of the distal bearing axis of rotation relative to the proximal bearing axis of rotation in the carrier opposite the determined deflection under no gear loading.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: January 22, 2013
    Assignee: Pratt & Whitney
    Inventor: Loc Quang Duong
  • Publication number: 20130005528
    Abstract: A method for use with a transmission system (A, A1, B) incorporating a split gear assembly (20, 120, 220) for splitting an applied input load between two or more reaction gears (30, 40, 130, 140, 230, 240) or pathways to selectively positioning a support bearing (50, 150, 250) to achieve an optimized load distribution (LRT) among a set of drive planet pinions (22, 122, 222) and idler planet pinions (70, 170, 270) in the transmission system.
    Type: Application
    Filed: March 11, 2011
    Publication date: January 3, 2013
    Applicant: THE TIMKEN COMPANY
    Inventors: Xiaolan Ai, Curt Orkin, Randy P. Kruse, Ryan Forbes, Matthew Wilmer, Neil Chiavaroli
  • Patent number: 8298115
    Abstract: A transmission assembly included in a power generation system of a wind turbine, the wind turbine having one or more wind driven rotor blades. The transmission assembly includes a transmission including an input carrier and a gear-train rotatably coupling the input carrier to a transmission output, the input carrier configured to transfer a rotational input from the rotor blades to the gear-train and a removable input bearing cartridge coupled to a periphery of the input carrier, exterior to the gear-train, the removable bearing cartridge in axial alignment with the input carrier.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: October 30, 2012
    Assignee: General Electric Company
    Inventors: Robert John Ciszak, Keith Marsden, Timothy Kuzma
  • Patent number: 8287423
    Abstract: A planetary gear system is disclosed. The planetary gear system includes a carrier, a planet gear defining a central planet axis, and a pin coupling the planet gear to the carrier. The planetary gear system additionally includes a bearing disposed between the planet gear and the pin. The bearing includes a plurality of rolling elements. Each of the rolling elements is in contact with an inner race and an outer race. The planetary gear system further includes a resilient member. The resilient member is disposed between one of the inner race and the pin or the outer race and the planet gear.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: October 16, 2012
    Assignee: General Electric Company
    Inventors: Fulton Jose Lopez, Darren Lee Hallman, Bugra Han Ertas, Robert Michael Zirin
  • Patent number: 8282523
    Abstract: The planetary roller reducer, which is directly coupled to a motor, is provided with a casing (6), an input shaft (3) accommodated inside the casing and directly coupled to an output shaft (2) of the motor (1), an input shaft bearing (20) set between the casing and the input shaft to support the input shaft so as to rotate with respect to the casing, a sun shaft (4) installed on the input shaft, a carrier (8) accommodated in the casing, a plurality of planetary rollers (13) supported on the carrier so as to rotate and in external contact with the sun shaft, an elastic ring (5) accommodated in the casing and in internal contact with a plurality of the planetary rollers, and a first elastic member (25a) installed between the input shaft bearing and the input shaft to elastically support the input shaft.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: October 9, 2012
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Fumio Inayoshi
  • Patent number: 8272990
    Abstract: The invention relates to a revolving gear mechanism with at least two gear wheels which mesh mutually, forming an engagement space, of which one is a revolving gear wheel which is mounted rotatably by means of a bearing on a bolt, and a lateral surface of the bolt forms a bearing surface. According to the invention, at least one axial longitudinal groove is arranged on the lateral surface of the bolt.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: September 25, 2012
    Assignee: IMS Gear GmbH
    Inventors: Heinz Gert Hagedorn, Erkan Poyraz, Thomas Riester
  • Patent number: 8262535
    Abstract: A planetary gear train is described which includes a sun gear, three or more planet gears, an annulus as well as a planet gear carrier, whereby the input is provided via the sun gear and the output is provided via the annulus or via the planet gear carrier, whereby each planet gear is mounted on both sides in a roller bearing, and whereby the planet gear carrier includes two axially spaced bearing washers as well as at least three webs that connect the bearing washers. Each roller bearing is configured as a single-row or multi-row cylindrical roller bearing, each planet gear has a flexurally elastic axis projecting axially on both sides beyond the gear body of the planet gear, and the connection between each roller bearing and the appertaining axis is configured to be spherically moveable.
    Type: Grant
    Filed: November 4, 2006
    Date of Patent: September 11, 2012
    Assignee: MTU Aero Engines GmbH
    Inventor: Hermann Klingels
  • Patent number: 8251862
    Abstract: A shaft retainer for a planet gear carrier of a planetary gear assembly both retains the pinion shafts within the carrier and maintains their angular orientation to achieve improved oil flow to the pinion bearings. Each of the pinion shafts includes an opening and an axial passageway that communicates with a radial passageway at the middle of the shaft. At the end of the pinion shaft opposite the axial passageway opening is a flat extending across the shaft. The flat is normal to the axis of the radial passageway. The pinion shafts are slip fit into suitable bores in the planetary gear carrier and support a needle bearing and planet or pinion gear. At one end of the carrier, the flats are engaged by a circular retainer so that the radial passageways of each of the pinion shafts are oriented radially outwardly. The circular retainer may either be a flat circular plate or have an L-shaped cross-section.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: August 28, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Boris Burgman, John A. Diemer