Having Nonmetallic Component Patents (Class 474/161)
  • Patent number: 10253865
    Abstract: The invention relates to a damping device on a multi-gear cassette for a rear wheel of a bicycle, wherein percussive forces produced by the chain members running from the slack span of the chain onto the sprocket are damped. This is achieved by damping the chain in the region of the chain run-in on the sprocket where no loads are borne. In one embodiment, a damping ring is provided for the purpose of supporting the chain link plates, and the tooth contour of the tooth flank which does not transmit load force is set back, and the tooth root space according to the invention is recessed toward the hub center. As such, when the chain is fed in to the sprocket, the chain link plate contacts the damping ring rather than the chain roller impacting the tooth flank or the tooth base.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: April 9, 2019
    Assignee: SRAM DEUTSCHLAND GMBH
    Inventor: Henrik Braedt
  • Patent number: 10060513
    Abstract: A pulley assembly for an automobile auxiliary apparatus, such as an alternator, that dampens torsional impacts and reduces the stress on the auxiliary apparatus, the belt drive system and other apparatuses, by use of both a torsion spring and a one-way overrunning clutch mechanism allowing for the free run of the pulley shaft.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: August 28, 2018
    Assignee: MOTORCAR PARTS OF AMERICA, INC.
    Inventors: John G. Agnitch, Nelson Meza
  • Patent number: 9982751
    Abstract: A silent chain includes a first link, a second link, and coupling pins. The first link is configured from one or more first link plates that include a pair of first pin holes. The second link is configured from one or more second link plates that include a pair of second pin holes. The coupling pins are inserted through the respective first pin holes of the first link plate and the respective second pin holes of the second link plate. The coupling pins alternately couple the first link and the second link together along a chain drive direction so as to enable the first link and the second link to flex. Abrasive particles are embedded in inner peripheral faces at the pin holes of the first link plate and the second link plate.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: May 29, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Akira Fujiwara, Takeo Kobayashi
  • Patent number: 9957852
    Abstract: A sprocket assembly which is either driven by a drive chain or which drives the drive chain includes a hub centered about a sprocket axis and defining a hub radially outer surface; a plurality of sprocket teeth extending radially outward from the hub; and a cushion ring assembly adjacent to the plurality of sprocket teeth and circumferentially surrounding the hub radially outer surface. The cushion ring assembly includes a cushion ring adjacent to the plurality of sprocket teeth and circumferentially surrounding the hub radially outer surface; the cushion ring being resilient and compliant. The cushion ring assembly also each includes a retention ring which is partially embedded within the cushion ring and which engages the hub radially outer surface in an interference fit, the retention ring providing axial and radial retention of the cushion ring to the hub.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: May 1, 2018
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventors: Leonel A. Barrera, Cesar C. Chavez
  • Patent number: 9933063
    Abstract: A silenced sprocket comprises, adjacent to the base of its teeth, a circular channel, or bilateral channel, on the metal body of the sprocket itself. The bilateral channel has a minimal radial extension, a silencing rubber element (106?), and a bilateral channel. The bilateral channel creates its own housing and has a minimal radial extension compared to the sprocket radius. The silenced sprocket is made by a molding technique that uses special molding components, adapted to apply the rubber silencing element on the sprocket metal body. These components are of annular circular shape, U cross section and a width essentially corresponding to the channel width, rendering the mold independent from the specific shape of the sprocket metal body.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: April 3, 2018
    Assignee: Ognibene S.P.A.
    Inventor: Franco Ognibene
  • Patent number: 9850615
    Abstract: A pulley has a plastic body having a peripheral seat and a central hub defining a through opening, with teeth extending from the central hub into the through opening. A metal insert is located within the hub and has at least a portion circumscribing the through opening.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: December 26, 2017
    Assignee: Whirlpool Corporation
    Inventors: Thomas D. Kleinmanns, Kurt Werner
  • Patent number: 9751029
    Abstract: Disclosed are apparatus and methods for treating wastewater. In one example there is provided a wastewater treatment system. The wastewater treatment system comprises a settling basin having a first sidewall and a second sidewall, a first headshaft mount disposed on the first sidewall, a second headshaft mount disposed on the second sidewall, a headshaft comprising a shaft extending between and engaging the first headshaft mount and the second headshaft mount and including a bull sprocket and a collector headshaft sprocket.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 5, 2017
    Assignee: Evoqua Water Technologies LLC
    Inventor: William H. Selle
  • Patent number: 9599200
    Abstract: A pulley assembly for an automobile auxiliary apparatus, such as an alternator, that dampens torsional impacts and reduces the stress on the auxiliary apparatus, the belt drive system and other apparatuses, by use of both a torsion spring and a one-way overrunning clutch mechanism allowing for the free run of the pulley shaft.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: March 21, 2017
    Assignee: MOTOCAR PARTS OF AMERICA, INC.
    Inventors: John G. Agnitch, Nelson Meza
  • Patent number: 9593742
    Abstract: A silent chain is provided, which can avoid impinging contact between guide plates and sprocket teeth and prevent wear loss and noise. A guide plate includes a main guide part formed on a side that engages with a sprocket, and an additional guide part formed on at least one of front and rear edges in the longitudinal direction of the chain. The additional guide part protrudes more in the longitudinal direction of the chain than an outer flank of a middle plate arranged in the same guide row and has a size that allows the additional guide part to overlap a sprocket tooth in the chain width direction when engaged with the sprocket S.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: March 14, 2017
    Assignee: TSUBAKIMOTO CHAIN CO.
    Inventors: Yuta Kurono, Shota Miyanaga
  • Patent number: 9555855
    Abstract: A bicycle sprocket includes a sprocket body and a plurality of sprocket teeth. The sprocket teeth extend radially outwardly from an outer periphery of the sprocket body. The sprocket body includes a first layered member, a second layered member and a third layered member. The first layered member has a first axial surface and a second axial surface. The second layered member is attached to the first axial surface such that the first and second layered members overlap each other in an axial direction as viewed parallel to a rotational axis. The third layered member is attached to the second axial surface such that the first and third layered members overlap each other in the axial direction as viewed parallel to the rotational axis. At least one of the second and third layered members has at least one concavo-convex portion.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: January 31, 2017
    Assignee: Shimano Inc.
    Inventors: Toru Iwai, Toyoshi Yoshida
  • Patent number: 9513102
    Abstract: An angle sensor for determining a rotation angle of a rotatable body, such as a steering column in a motor vehicle, includes a gear wheel. The orientation of a magnetic field generated by the gearwheel is configured to be detected by a magnetic field sensor. The gear wheel is comprised of a magnetisable material, such as hard ferrite, into which a magnetization is introduced. The gear wheel is stronger in a central region than in an edge region in which the teeth are arranged. In order to weakly magnetize the edge region, which minimizes a negative influence of the teeth on the homogeneity of the generated magnetic field, the front face of the gear wheel is configured to be magnetized. The magnetization process advantageously takes place at the same time as an injection moulding process to form the gearwheel. A method is implemented to produce the gear wheel.
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: December 6, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Alexander Braun, Wolfgang Welsch, Matthias Waibler, Klaus Burkhardt, Mathias Kimmerle
  • Patent number: 9328814
    Abstract: A bicycle chainring, including a generally annular body formed of at least an inner material, the inner material including a first side and a second side opposite the first side and a plurality of teeth disposed about a periphery of the body. At least some of the plurality of teeth are formed of both the inner material and an outer material, the outer material disposed on one or both of the first and second sides, the outer material having a greater wear resistance relative to the inner material and a thickness greater than 0.1 millimeter.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: May 3, 2016
    Assignee: SRAM, LLC
    Inventors: Kevin Wesling, Anthony Medaglia
  • Patent number: 9194446
    Abstract: A crank set for a bicycle includes a free-wheeling device having holes for attaching chain rings. The holes include two separate circular bolt hole patterns L1 and L2.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: November 24, 2015
    Assignee: EGO SPORTS GMBH
    Inventors: Daniel Preining, Matthias Eitschberger
  • Patent number: 9188173
    Abstract: A rotation transmission device with a built-in one-way clutch having an inside rotational member, an outside rotational member disposed concentrically with the inside rotational member is proposed. The device includes a one-way clutch that is radially disposed in an annular space defined between the inside rotational member and the outside rotational member, and at least one bearing disposed in the said annular space. The outside rotational member is made in a plastic material and is overmolded onto at least one stiffening insert.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: November 17, 2015
    Assignee: AKTIEBOLAGET SKF
    Inventors: Charles Chambonneau, Fran├žois Champalou, Richard Corbett, Jeremy Detraigne
  • Patent number: 9145965
    Abstract: A rubber-coated chain sprocket, may include a body into which a rotation shaft is inserted, a teeth bottom portion having a wave shape along the outer edge of the body, wherein the teeth bottom portion receives a chain bush therein, a shoulder portion projecting in both side directions along the inner edge of the teeth bottom, and a rubber coating portion formed of rubber material and covering the edge of the shoulder portion, wherein the rubber coating portion has projections along the outer edge at a regular interval, such that a chain plate presses and makes close contact with one of the projections.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: September 29, 2015
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Hee Do Kwon, Kye Oong Song
  • Publication number: 20150045165
    Abstract: A rubber-coated chain sprocket, may include a body into which a rotation shaft is inserted, a teeth bottom portion having a wave shape along the outer edge of the body, wherein the teeth bottom portion receives a chain bush therein, a shoulder portion projecting in both side directions along the inner edge of the teeth bottom, and a rubber coating portion formed of rubber material and covering the edge of the shoulder portion, wherein the rubber coating portion has projections along the outer edge at a regular interval, such that a chain plate presses and makes close contact with one of the projections.
    Type: Application
    Filed: December 17, 2013
    Publication date: February 12, 2015
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Hee Do Kwon, Kye Oong Song
  • Publication number: 20140335987
    Abstract: A bicycle sprocket includes a sprocket body, and a plurality of sprocket teeth. At least one of the sprocket teeth includes a first layered member, a second layered member and a third layered member. The first layered member has a first axial surface and a second axial surface. The second layered member is attached to the first axial surface such that the first and second layered members overlap each other in an axial direction as viewed parallel to a rotational axis of the sprocket body. The third layered member is attached to the second axial surface such that the first and third layered members overlap each other in the axial direction as viewed parallel to the rotational axis of the sprocket body. The first layered member has a specific gravity that is less than those of the second layered member and the third layered member.
    Type: Application
    Filed: December 26, 2013
    Publication date: November 13, 2014
    Applicant: Shimano Inc.
    Inventors: Toru IWAI, Makoto SOUWA, Tetsu NONOSHITA, Toyoshi YOSHIDA
  • Publication number: 20140315674
    Abstract: The invention relates to a pocket-type chain wheel (1) for link chains (22), in particular round or profile steel chains. A circumferential surface (2) of said pocket-type chain wheel is provided with pockets (3, 4) having alternately different shapes in the circumferential direction (U) and extending radially into the pocket-type chain wheel. In order to diminish noise generation in operation, reduce vibrations generated during operation and simultaneously cut production costs, the present invention discloses that the pocket-type chain wheel (1) is produced in one piece from a fiber-reinforced plastic by means of an injection molding process. Preferably, a main fiber direction (30) extends in a central area between the pockets (3, 4) and a hub (8) in the radial direction.
    Type: Application
    Filed: October 16, 2012
    Publication date: October 23, 2014
    Applicant: RUD KETTEN RIEGER & DIETZ GMBH U. CO. K.G.
    Inventors: Heribert Herzog, Achim Frick, Timo Dolde, Ralph Straberger
  • Publication number: 20140206486
    Abstract: A radially, axially, and torsionally compliant sprocket includes a rim including teeth thereon, a hub within the rim including a central bore, and a compliant open cell structure extending between the hub and the rim.
    Type: Application
    Filed: January 24, 2013
    Publication date: July 24, 2014
    Applicant: QinetiQ North America, Inc.
    Inventors: Robert Fuchs, William Crowley, Edward Mutschler
  • Publication number: 20140100070
    Abstract: Provided is a pulley structure of a belt type electric power steering (EPS) gear, and more particularly, a pulley structure of a belt type EPS gear capable of providing good assemblability using an engineering plastic and a specific structure. The pulley structure of the belt type EPS gear includes an insert ring section coupled to a ball nut, a support section configured to support the insert ring section, a first flange section configured to prevent separation of a belt, a pulley having a driving section configured to receive a driving force of the belt, a support frame disposed at one side surface of the driving section and having a bent shape to have an internal space when coupled to the ball nut, and a second flange section disposed at one side surface of the support frame and configured to prevent separation of the belt.
    Type: Application
    Filed: October 4, 2013
    Publication date: April 10, 2014
    Applicant: MANDO Corporation
    Inventor: Dae-Hee Jung
  • Publication number: 20130143704
    Abstract: The invention relates to a multipart sprocket (1), in which an inner ring (2) for fixing the multipart sprocket (1) to a wheel hub comprises through-holes (5) which are located on a common hole circle, wherein the inner ring (2) on the periphery thereof comprises radially outwardly directed inner ring lugs (2A) for receiving a gear rim (8), and the gear rim (8) comprises radially inwardly directed gear rim lugs (11) which are spatially associated with the radially outwardly directed inner ring lugs (2A), and means (12, 13, 14) are present, which connect the inner ring (2) and the gear rim (8) axially and radially.
    Type: Application
    Filed: June 15, 2011
    Publication date: June 6, 2013
    Inventors: Stefan Blank, Thomas Bauer
  • Publication number: 20130091968
    Abstract: A tension device for a corded-loop drive system has a base with a sprocket on the base such that the cord loop travels over the sprocket. At least one resilient finger has a first end attached to the base and a free end. Each finger is sized and positioned to engage the cord loop when the tension device is not properly mounted to a wall or window frame and prevent movement of the cord loop around the sprocket. There is a hole in the finger through which a screw passes. When the base is placed on a mounting surface and the screw is driven into the mounting surface, the free end of the finger will have moved from the first position to a second position away from the cord so that the cord loop may move around the sprocket and the window covering can be fully raised and fully lowered.
    Type: Application
    Filed: October 14, 2011
    Publication date: April 18, 2013
    Applicant: WHOLE SPACE INDUSTRIES LTD
    Inventor: Tzong-Fu Lin
  • Patent number: 8202185
    Abstract: A sprocket includes a plurality of teeth spaced about its periphery, roots located between pairs of adjacent teeth, and a cushion ring contacted by a chain engaging the sprocket teeth. The roots have root radii defined as the distance between the center of sprocket and the point along the root closest to the sprocket center in the radial direction. In some embodiments, the roots have three distinct radii. The cushioning material of the cushion ring receives the impact while engaging the chain. In some embodiments, the cushion ring has a contour substantially following the contours of the sprocket teeth geometry. In some embodiments, the cushion ring has a randomized contour to provide predetermined cushioning that varies from tooth to tooth around the sprocket.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: June 19, 2012
    Assignee: BorgWarner Inc.
    Inventor: J. Christian Haesloop
  • Patent number: 8083624
    Abstract: A cushion ring sprocket assembly and chain drive system are designed to prevent roller-to-root radial contact. Hard contact between the chain link plates and the cushion rings, and corresponding hard contact between the cushion rings and the sprocket hubs limit radial inward movement of the chain rollers/bushings, while the root surfaces of the tooth spaces are undercut so that the rollers cannot contact the root surfaces.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: December 27, 2011
    Assignee: Cloyes Gear and Products, Inc.
    Inventor: James D. Young
  • Publication number: 20110300977
    Abstract: In a sprocket comprising a sprocket hub, sprocket teeth and a cushion plate for contacting link plates of a transmission chain, the cushion plate is formed with concave portions at angular positions corresponding to the angular positions of the tips of the sprocket teeth, thereby avoiding contact, or reducing contact pressure, between the cushion plate and the middle parts of link plates of the chain.
    Type: Application
    Filed: May 26, 2011
    Publication date: December 8, 2011
    Applicant: TSUBAKIMOTO CHAIN CO.,
    Inventors: Atsushi Hayami, Kaori Mori, Masahiko Konno, Yuji Kurematsu
  • Patent number: 8070632
    Abstract: A torsional compensator having an inner hub, an outer sprocket, left and right grippers, and a resilient torsion sleeve. The torsion sleeve occupies a generally annular cavity between the inner hub and outer sprocket and each end of the sleeve is coupled to a gripper. One gripper is coupled to the inside of the outer sprocket and the other gripper is coupled to the outside of the inner hub and they are axially spaced apart. The inner hub supports the outer sprocket for coaxial rotation thereon.
    Type: Grant
    Filed: May 30, 2009
    Date of Patent: December 6, 2011
    Assignee: The Gates Corporation
    Inventor: Jing Yuan
  • Patent number: 7998008
    Abstract: The invention relates to a power transmission pulley comprising a pulley element having a ribbed outer outline that is adapted to receive a ribbed belt, and a resilient element interposed between the pulley element and a receiver device for coupling to a member driven by the belt. The pulley includes a freewheel device disposed in series with the resilient element between the pulley element and said receiver element.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: August 16, 2011
    Assignee: Hutchinson
    Inventors: Henri Kamdem, Claude Rointru
  • Patent number: 7993228
    Abstract: A power transmission device includes a pulley 1 and a hub 2 having an inner hub 21, a rubber damper 22 and an outer hub 23. A hub side engagement portion 24 formed of an elastic material and arranged either one, or both, of inner peripheral surface and outer peripheral surface of the outer hub engages with a pulley side engagement portion 12, arranged at a position corresponding to the outer hub, of the pulley in concavo-convex fitting to thereby constitute a torque transmission structure between the hub and the pulley. The hub side engagement portion and the pulley side engagement portion have a concavo-convex outer shape and mesh with each other.
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: August 9, 2011
    Assignee: DENSO CORPORATION
    Inventors: Michiyasu Nosaka, Yasuo Tabuchi, Motohiko Ueda, Yoshiki Tada, Hiroshi Nagae, Masahiro Yamashita, Kouji Kida, Mitsuhiro Tanabe
  • Patent number: 7967709
    Abstract: A bicycle sprocket is provided with a metallic sprocket ring part and a non-metallic inner ring part. The metallic sprocket ring part has a crank facing surface, an opposing surface, an inner periphery and an outer periphery with a plurality of sprocket teeth arranged thereon. The sprocket ring part includes at least one connecting portion integrally formed with the sprocket ring part as a one-piece, unitary member. The non-metallic inner ring part at least partially overlaps the inner periphery of the metallic sprocket ring part to at least partially non-movably couple the non-metallic inner ring part to the metallic sprocket ring part with at least one selected portion being absent of the non-metallic inner ring part to allow relative elastic deformation between the metallic sprocket ring part and the non-metallic inner ring in an axial direction.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: June 28, 2011
    Assignee: Shimano Inc.
    Inventors: Atsuhiro Emura, Tetsu Nonoshita
  • Patent number: 7947149
    Abstract: A web of a first sheet material and a web of a second sheet material are laminated together by a process wherein the sheet materials are wound, in an interleaved relationship, upon a roller having a radially displaceable outer surface. The roller and webs and then subjected to heating and/or a low-pressure environment so as to complete the lamination. A body of adhesive material, such as a hot melt adhesive, may be interposed between the webs and the heating or low pressure environment can activate this adhesive. Further disposed are particular configurations of rollers with radially displaceable surfaces.
    Type: Grant
    Filed: January 21, 2008
    Date of Patent: May 24, 2011
    Assignee: United Solar Ovonic LLC
    Inventors: Arthur Myatt, Gregory Demaggio, Kevin Beernink, Kermit Jones, Kenneth Lord
  • Patent number: 7883437
    Abstract: A sprocket for transferring a force between a chain and a drive element that includes a plurality of teeth and a plurality of openings proximate the teeth. Each tooth has a load-bearing flank and a non-load-bearing flank. One of the plurality of openings are arranged relative to one of the plurality of teeth, in one-to-one correspondence therebetween, such that the opening is asymmetrically divided by a radial centerline of the tooth, a first load strip is formed between the opening and the load-bearing flank of the tooth, and a second load strip is formed between the opening and the non-load-bearing flank of the tooth.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: February 8, 2011
    Assignee: SRAM Deutschland GmbH
    Inventor: Henrik Braedt
  • Patent number: 7850564
    Abstract: A bicycle sprocket is provided that has a synthetic resin fastening part, to facilitate weight saving and prevent the reduction of fastening power (strength) due to deterioration or deformation of the synthetic resin. The sprocket includes a sprocket ring part and a synthetic resin fastening part. The sprocket ring part includes an inner periphery and an outer periphery with a plurality of sprocket teeth arranged on the outer periphery. The sprocket ring part extends around a central rotation axis. The fastening part is non-movably coupled to the sprocket ring part at a location radially inwardly of the sprocket teeth relative to the rotation axis. The fastening part includes at least one through hole with a metallic tubular member mounted therein and configured to be fixedly coupled to a rotational drive unit of a bicycle. The tubular member has a first fastener contact surface configured to receive a fastening force.
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: December 14, 2010
    Assignee: Shimano Inc.
    Inventor: Tetsu Nonoshita
  • Patent number: 7850558
    Abstract: A power transmission apparatus for a compressor used in an air conditioner for a vehicle including a damper mounted to one side of a pulley rotated by a driving power transmitted from an engine wherein the damper and an elastic portion is formed between an outer ring and an inner ring, and wherein a mounting flange of the outer ring is coupled to the pulley and a mounting flange of the inner ring is coupled to a limiter. The limiter has a plate shape and comprises: a middle portion in a ring shape, an outside portion in a ring shape around the edge of the middle portion, and a neck portion connecting the middle portion and the outside portion, whereby upon overload, the neck portion is broken. The middle portion of the limiter is coupled to a hub, and the hub penetrates the center of the inner ring and is coupled to the limiter between the damper and the pulley.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: December 14, 2010
    Assignee: Halla Climate Control Corp.
    Inventor: Seong Taek Oh
  • Publication number: 20100304907
    Abstract: A torsional compensator having an inner hub, an outer sprocket, left and right grippers, and a resilient torsion sleeve. The torsion sleeve occupies a generally annular cavity between the inner hub and outer sprocket and each end of the sleeve is coupled to a gripper. One gripper is coupled to the inside of the outer sprocket and the other gripper is coupled to the outside of the inner hub and they are axially spaced apart. The inner hub supports the outer sprocket for coaxial rotation thereon.
    Type: Application
    Filed: May 30, 2009
    Publication date: December 2, 2010
    Applicant: THE GATES CORPORATION
    Inventor: Jing Yuan
  • Patent number: 7824287
    Abstract: A bicycle sprocket is provided that has a sprocket ring part, a synthetic resin fastening part and at least one attachment part. The synthetic resin fastening part is non-movably coupled to the sprocket ring part at a location radially inwardly of the sprocket teeth relative to the rotation axis. The least one attachment part is at least partially embedded within the synthetic resin fastening part. The attachment part includes a connecting portion and a radial projecting portion extending outwardly from the connecting portion to space the connecting portion radially inward of the sprocket ring part. The attachment part is formed as a separate member from the sprocket ring part and the synthetic resin fastening part. The synthetic resin fastening part facilitates weight saving, while the attachment part prevents the reduction of fastening power (strength) due to deterioration or deformation of the synthetic resin.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: November 2, 2010
    Assignee: Shimano Inc.
    Inventors: Tetsu Nonoshita, Hideya Inoue, Atsuhiro Emura
  • Patent number: 7713156
    Abstract: In a chain transmission having a sprocket with an elastic ring sandwiched between a central hub and an annular toothed outer member, the tooth form is such that the root diameter, that is, the diameter of the tooth gap bottom circle, is greater than the root diameter in a sprocket having a standard ISO tooth form.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: May 11, 2010
    Assignee: Tsubakimoto Chain Co.
    Inventors: Shunji Sakura, Akira Hirai
  • Patent number: 7699733
    Abstract: In a chain transmission, vibration reduction is improved by an elastic member, sandwiched between an inner hub of a sprocket and a toothed outer circumferential member, in combination with a sprocket tooth configuration in which two or three different tooth form pitch angles are arranged irregularly along the sprocket's pitch circle.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: April 20, 2010
    Assignee: Tsubakimoto Chain Co.
    Inventors: Shunji Sakura, Akira Hirai
  • Patent number: 7645204
    Abstract: A method for maintaining constant position of a bearing outer race relative to an axial bore of a pulley comprising providing a pulley having a central axial hub exhibiting a concentric axial bore therethrough, the concentric axial bore having an axial bore surface; providing a bearing having an outer axial race, an inner axial race, and a plurality of bearing elements rotatably positioned between the outer axial race and the inner axial race; applying at least one drop or bead of a fastening element onto an outer surface of the outer race, wherein the fastening element acts to maintain constant position of the bearing relative to the pulley; and coupling the bearing to the pulley, and a pulley having a bearing integral therewith which exhibit the characteristic of maintaining constant position of the bearing relative to the pulley are disclosed.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: January 12, 2010
    Assignee: Dayco Products, LLC
    Inventors: Jeffrey A. Swane, Daniel A. Pelton
  • Publication number: 20090264234
    Abstract: An AC generator for vehicles as an electric rotary machine, a pulley is fixed to a rotating shaft, and a belt transmits a driving force from outside to the rotating shaft via the pulley.
    Type: Application
    Filed: April 17, 2009
    Publication date: October 22, 2009
    Applicant: DENSO CORPORATION
    Inventor: Tooru OOIWA
  • Publication number: 20090191996
    Abstract: A bicycle hub assembly comprises a shaft, a first load bearing adjacent said shaft, a hub main body surrounding said shaft, and a cogset. The cogset can define an inner surface, and the inner surface can define a seat configured to receive the first load bearing. Further, the inner surface can define an opening of variable size. The cogset can also define an inner end and an outer end, and the opening can generally increase in size from the outer end to the inner end.
    Type: Application
    Filed: January 24, 2008
    Publication date: July 30, 2009
    Inventor: Christopher P. D'Aluisio
  • Publication number: 20090118047
    Abstract: A sprocket includes a plurality of teeth spaced about its periphery, roots located between pairs of adjacent teeth, and a cushion ring contacted by a chain engaging the sprocket teeth. The roots have root radii defined as the distance between the center of sprocket and the point along the root closest to the sprocket center in the radial direction. In some embodiments, the roots have three distinct radii. The cushioning material of the cushion ring receives the impact while engaging the chain. In some embodiments, the cushion ring has a contour substantially following the contours of the sprocket teeth geometry. In some embodiments, the cushion ring has a randomized contour to provide predetermined cushioning that varies from tooth to tooth around the sprocket.
    Type: Application
    Filed: January 9, 2009
    Publication date: May 7, 2009
    Applicant: BorgWarner Inc.
    Inventor: J. Christian Haesloop
  • Publication number: 20090093329
    Abstract: A cushion ring (102) is received in a concentric groove in a sprocket (112) with teeth and a hub. More specifically, the groove is defined between an annular portion of the hub and the teeth. The cushion ring has an inner ring (106) and an outer ring (104). The outer ring is made of an incompressible material that has a load bearing area for receiving load from the links of the chain. The load and engagement noise energy of the chain links are combined and distributed over a large area of the outer ring. The inner ring receives this distributed load and noise energy from the outer ring and absorbs most of such energy. This improved distribution decreases wear and increases life of the resilient material while also providing for a reduced level of chain engagement noise.
    Type: Application
    Filed: March 7, 2007
    Publication date: April 9, 2009
    Applicant: BORGWARNER INC
    Inventors: George L. Markley, Timothy J. Maxson, Jason W. Chekansky
  • Publication number: 20080312018
    Abstract: In a power transmission 1 in which a pulley 2 and a hub 5 are engaged with each other, in protrusions 51 of the hub 5 side and in protrusions 22 of the pulley 2 side located on an outer circumferential side with respect to an outer hub 53, an annular dust flange 51d is provided which protrudes and expands to the outside in the radial direction from a front side portion which adjoins protrusions 51c of an elastic portion 52. When an outer circumferential end of this dust flange 51d is elastically, tightly contacted with a sealing portion 23 of the pulley 2, a front face of the protrusions 22 can be completely covered.
    Type: Application
    Filed: June 10, 2008
    Publication date: December 18, 2008
    Applicant: DENSO CORPORATION
    Inventors: Yoshihiro Nakata, Yasuo Tabuchi, Keiji Ishikawa, Takayuki Suzuki, Michiyasu Nosaka, Yoshiki Tada
  • Publication number: 20080132367
    Abstract: A sprocket for transferring a force between a chain and a drive element that includes a plurality of teeth and a plurality of openings proximate the teeth. Each tooth has a load-bearing flank and a non-load-bearing flank. One of the plurality of openings are arranged relative to one of the plurality of teeth, in one-to-one correspondence therebetween, such that the opening is asymmetrically divided by a radial centerline of the tooth, a first load strip is formed between the opening and the load-bearing flank of the tooth, and a second load strip is formed between the opening and the non-load-bearing flank of the tooth.
    Type: Application
    Filed: December 3, 2007
    Publication date: June 5, 2008
    Applicant: SRAM Deutschland GmbH
    Inventor: Henrik Braedt
  • Patent number: 7371200
    Abstract: A sprocket includes a hub and a plurality of teeth projecting radially outwardly from the hub. At least one cushion ring is located adjacent the teeth, and the cushion ring defines a plurality of compression pads separated from each other by transverse grooves. Each of the compression pads is defined symmetrically about a circumferential mid-point. When part of a sprocket with symmetric tooth spaces, the cushion ring is being operable identically in first and second opposite rotational directions. In one arrangement, the compression pads each include a planar outer surface having a leading and a trailing end, wherein the leading end and trailing end are located a common radial distance from a center of the hub about which the sprocket rotates. The tooth spaces of the sprocket can be symmetric, asymmetric and the root surface can be relieved. The sprocket can include multiple tooth profiles distributed randomly about the hub.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: May 13, 2008
    Assignee: Cloyes Gear and Products, Inc.
    Inventor: James D. Young
  • Patent number: 7297081
    Abstract: An idler pulley with an integral bearing carrier insert comprising: a pulley body having a peripheral surface for accepting and retaining an endless belt; and a tubular bearing carrier insert forming a central hub along a perpendicular axis of the idler pulley body, the hub having an inner circumferential surface and an outer circumferential surface.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: November 20, 2007
    Assignee: Dayco Products, LLC
    Inventor: Steven J. Eck
  • Patent number: 7232392
    Abstract: A method for installing a cushion ring on a sprocket body to construct a sprocket assembly includes applying a deforming force to a cushion ring so that an opening therein is deformed to a shape that accommodate passage of a non-circular flange of a sprocket body therethrough. When the cushion ring is deformed, the non-circular flange of the sprocket body is inserted through the opening of the cushion ring. The deforming force is then released from the cushion ring so that the cushion ring is trapped between the flange and another portion of the sprocket body. The sprocket assembly includes at least one and typically two cushion rings trapped by respective non-circular flanges.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: June 19, 2007
    Assignee: Cloyes Gear and Products, Inc.
    Inventor: Jeffrey R. Hamilton
  • Patent number: 7179341
    Abstract: An integrated sprocket and housing used in a variable valve timing mechanism. The integrated sprocket and housing includes: a sprocket portion which is formed in a substantially annular shape, and which has teeth on the outer circumference thereof; and a housing portion which is disposed inside the sprocket portion, which has recesses in the inside thereof, and which is formed integrally with the sprocket portion as a sintered body made of a ferrous powder material, wherein the entire surface of the sprocket portion and the housing portion is covered with a steam oxidized layer which is formed by a steam treatment, and a nitrided layer which is formed by a gas soft nitriding treatment subsequent to the steam treatment.
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: February 20, 2007
    Assignee: Mitsubishi Materials Corporation
    Inventor: Toshiro Harakawa
  • Patent number: 7094170
    Abstract: A sprocket for an inverted tooth chain includes at least one and typically first and second resilient cushion rings for adapted to be engaged by the guide links of an associated inverted tooth chain. The sprocket is usable with conventional inverted tooth chains and/or with a new inverted tooth chain that includes guide links for each row of the chain.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: August 22, 2006
    Assignee: Cloyes Gear and Products, Inc.
    Inventor: James D. Young
  • Patent number: 7074147
    Abstract: A sprocket includes a hub and a plurality of teeth projecting radially outwardly from the hub. At least one cushion ring is located adjacent the teeth, and the cushion ring defines a plurality of compression pads separated from each other by transverse grooves. Each of the compression pads is defined symmetrically about a circumferential mid-point. When part of a sprocket with symmetric tooth spaces, the cushion ring is being operable identically in first and second opposite rotational directions. In one arrangement, the compression pads each include a planar outer surface having a leading and a trailing end, wherein the leading end and trailing end are located a common radial distance from a center of the hub about which the sprocket rotates. The tooth spaces of the sprocket can be symmetric, asymmetric and the root surface can be relieved. The sprocket can include multiple tooth profiles distributed randomly about the hub.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: July 11, 2006
    Assignee: Cloyes Gear and Products, Inc.
    Inventor: James D. Young