Positive Drive Belt Patents (Class 474/202)
  • Patent number: 11499620
    Abstract: To provide a sprocket that reduces the influence of tension fluctuations concurrent with load torque variations to suppress noise and vibration, and that prevents an increase in tension fluctuations, noise, and vibration even when the chain tension is low and the load torque is small, and in regions where engagement between the chain and sprocket is free of the influence of tension. The sprocket has a plurality of seating points for the chain when the chain sits under no load set between adjacent pairs of the teeth such that their radial positions change in a circumferentially continuous manner. The radial positions of the seating points under no load have a variation pattern in which the radial positions increase and decrease depending on circumferential positions of the seating points.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: November 15, 2022
    Assignee: TSUBAKIMOTO CHAIN CO.
    Inventors: Yuji Kurematsu, Yudai Takagi, Yuki Mizuno
  • Patent number: 9631699
    Abstract: A drive system with a drive chain which is guided over a sprocket (10), said sprocket having a sequence of teeth (11) arranged on its circumference, and which is composed of a succession of chain links (14), wherein each chain link (14) is composed of at least two link plates (15) which are arranged parallel to one another and which are connected to one another by means of link pins (16), is characterized in that the individual chain links (14) are coupled to one another by means of at least one connecting plate (18) which is arranged between said chain links and which permits a parallel displacement of the chain links (14) relative to one another, wherein each connecting plate (18) has at least one projection (19), and projections (19) and teeth (11) have in each case an angular form with rectilinearly running tooth flanks (13) and engagement flanks (20), and in that, in the case of a load-induced elongation of the connecting plates (18), the engagement flanks (20), starting with the final connecting plate (
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: April 25, 2017
    Assignee: SIMERTIS GMBH
    Inventors: Michael Dietrich, Holger Haut
  • Patent number: 9341234
    Abstract: A vehicle periphery monitoring system is provided, in which by matching a behavior of a semitransparent tire image with an operation from a driver's viewpoint, a feeling of strangeness is reduced, an intuitive space perception is assisted and also a moving direction and a behavior of a vehicle can be easily perceived. In a side-view monitor system an image processing controller converts a real camera image including a blind spot into an image to be viewed from a driver's viewpoint to generate a blind spot image, and superimposes a semitransparent vehicle image which is obtained by making a vehicle viewed from the driver's viewpoint semitransparent and a semitransparent tire image which is obtained by making a tire semitransparent and displaying a behavior following a handle operation viewed from the driver's viewpoint on the blind spot image.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: May 17, 2016
    Assignee: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventor: Hiroyuki Shiriike
  • Patent number: 9243686
    Abstract: Chain detachment and chain entry are avoided, and a process for setting the length of a meshing chain is avoided, while the chain feed length can also be freely changed. A meshing chain stopper (190L) comprises a meshing chain stopper attachment part (191) and a contact-stop protrusion (192). The contact-stop protrusion (192) is contact-stopped at a contact-stop point (173A) provided on the periphery of a chain locus (L) when a pair of meshing chains (150, 150) are being driven.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: January 26, 2016
    Assignee: TSUBAKIMOTO CHAIN CO.
    Inventor: Tomoyuki Saji
  • Publication number: 20150093595
    Abstract: A slide member is provided with a base material and a slide layer. The slide layer is disposed on at least a portion of the base material. The slide layer contains a solid lubricant and a plurality of hard particles, the hard particles being harder than the solid lubricant.
    Type: Application
    Filed: July 23, 2014
    Publication date: April 2, 2015
    Inventor: Takamoto ASAKAWA
  • Patent number: 8932165
    Abstract: A toothed belt includes a body, at least one tooth formed of the body, a jacket disposed along a peripheral surface of the at least one tooth and having a compressed thickness in the range from 0.5 mm to about 0.8 mm, and at least one cord embedded in the body and having a diameter. The at least one cord and said jacket have a ratio of said cord diameter to said jacket thickness of less than 1.8, and said cord diameter and said jacket thickness describe an optical belt PLD of about 1.2 mm or less.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: January 13, 2015
    Assignee: The Gates Corporation
    Inventor: John Graeme Knox
  • Patent number: 8747264
    Abstract: An energy harvesting system includes a heat engine and a component. The heat engine includes a belt, a first member, and a second member. The belt includes a strip of material and at least one wire at least partially embedded longitudinally in the strip of material. The wire includes a shape memory alloy material. A localized region of the at least one wire is configured to change crystallographic phase between martensite and austenite and either contract or expand longitudinally in response to exposure to a first temperature or a second temperature such that the strip of material corresponding to the localized region also contracts or expands. The first member is operatively connected to the belt and moves with the belt in response to the expansion or contraction of the belt. The component is operatively connected to the first member such that movement of the first member drives the component.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: June 10, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Paul W. Alexander, Alan L. Browne, Nancy L. Johnson, Nilesh D. Mankame, Xiujie Gao, Geoffrey P. McKnight, Andrew C. Keefe, Peter Maxwell Sarosi, Christopher P. Henry, Patrick B. Usoro
  • Publication number: 20140106918
    Abstract: A belt (1) comprises a tension layer (4), a first end portion (2) at a first longitudinal end, a second end portion (3) at a second longitudinal end, and an end connection for connecting the two end portions (2, 3). Here, the end connection comprises a first connection element (21), which is fastened to the first end portion (2), and a second connection element (31), which is fastened to the second end portion (3), wherein the first connection element (21) and the second connection element (31) are releasably interconnectable and are formed from an elongation-resistant material. The first connection element (21) and the second connection element (31) are each formed in one piece and, together with the tension layer (4), form a single neutral bending plane.
    Type: Application
    Filed: May 15, 2012
    Publication date: April 17, 2014
    Applicant: HABASIT AG
    Inventors: Thomas Richter, Heiko Lang
  • Patent number: 8632432
    Abstract: A supporting and drive belt including a belt body or sheathing which encloses tensile carriers. The running surface of the belt can be flat and parallel to the belt back or have trapezium-shaped or semicircular ribs and grooves, wherein the profile of a drive pulley or of a deflecting pulley is approximately complementary to the running surface of the belt. One or more tensile carriers are provided for each rib, wherein the tensile carriers are laid or stranded alternately in the “Z” direction and the “S” direction.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: January 21, 2014
    Assignee: Inventio AG
    Inventors: Adolf Bissig, Alessandro D'Apice, Herbert Bachmann, Manfred Wirth, Roland Lorenz, Tobias Noseda, Florian Dold, Claudio De Angelis
  • Patent number: 8490266
    Abstract: A manufacturing method of a driving belt, which can measure and adjust an endplay of the driving belt including a ring and elements to improve productivity of the driving belt, the method including: obtaining a correlation among a circumferential length of the ring, a total weight of the elements fastened by the ring, and a range of a movement of the fastened elements in the length direction of the ring; determining a range of a required element weight as a total weight of the elements to be fastened by the ring, on the basis of the obtained correlation, a desired moving range of the element, and the length of the ring; feeding the elements in the amount within the range of the required element weight while measuring a total weight of the element being fed; and fastening the element fed at the element feeding by the ring.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: July 23, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Daisuke Kobayashi
  • Publication number: 20130143705
    Abstract: A belt clamping system including an open-ended, flat belt with an end portion having a number of teeth projecting therefrom and a clamping plate with matching tooth profile for use in connecting the belt end to another structure. The flat belt may be reinforced with longitudinally extending cords. The toothed profile may be a standard timing belt profile and may be unreinforced. A length of timing belt profile material may be welded to the flat surface of the open-ended flat belt at or near an end. The length of timing belt profile may include at least 7 tooth pitches. The end portion may be clamped between a flat surface of a flat plate and a grooved surface of a grooved plate having grooves complementary to the timing belt teeth.
    Type: Application
    Filed: December 1, 2011
    Publication date: June 6, 2013
    Applicant: THE GATES CORPORATION
    Inventor: Peter Wolf
  • Patent number: 8454464
    Abstract: A method of making a belt including the steps of: (a) helically wrapping a fabric strip of predetermined width on a mandrel at a first helix angle; (b) helically winding a tensile cord onto the mandrel over the fabric at a second helix angle less than the first helix angle; (c) wrapping a sheet or a strip of elastomer material around the mandrel over the tensile cord; and (d) curing the elastomer material under pressure to form a belt sleeve. The mandrel may be grooved for making toothed belts. The fabric strip may be preformed. A resulting toothed belt has a fabric seam spanning several teeth and having a helix angle. The seam may be joined.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: June 4, 2013
    Assignee: The Gates Corporation
    Inventor: Lambert Pasch
  • Patent number: 8454465
    Abstract: The invention is related to a toothed chain with alternating inner and outer chain links each joined by means of a chain joint, wherein the inner chain links comprise at least one inner plate and at least two joint bushes running perpendicularly through the same, the outer chain links comprise at least two outer plates and at least two joint pins running perpendicularly through the same, and to form a chain joint, one joint pin of the outer chain link each extends through a joint bush of the inner chain link, and at least one inner plate of the inner chain link and/or at least one outer plate of the outer chain link is embodied as a toothed plate with each two teeth defined by an outer flank and an inner flank each.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: June 4, 2013
    Assignee: Iwis Motorsysteme GmbH & Co. KG
    Inventors: Andreas Bongard, Volker Hirschmann, Lutz Welke
  • Patent number: 8426524
    Abstract: A reduced cost elastomeric blend suitable for use in vehicle timing belts and other applications constructed with elastomeric portions having a high HNBR concentration. The blends comprise from about 50 to less than 100 phr of HNBR and from about 0.1 to about 50 phr of lower cost diluent unsaturated nitrile rubber with from about 0.1 to about 30 phr of a heat resistant additive, which may be THERBAN HT. The elastomeric blends may be cured with a peroxide/co-agent cure system. The elastomeric blends may be mixed by a Y-mix method to improve ozone resistance. A timing belt constructed of the elastomeric blend is also taught.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: April 23, 2013
    Assignee: Veyance Technologies, Inc
    Inventors: Mauro Piccirilli, Thomas George Burrowes
  • Patent number: 8317645
    Abstract: In a silent chain transmission, the distance between the centers of front and rear pin holes of each of the inner link plates of the chain is smaller than the length of the smallest chord obtained by dividing, by the number of sprocket teeth, the circumference of a circle having a radius extending from the center of the sprocket to the center of a pin hole of a link plate of the chain when the last-mentioned link plate is fully engaged with the sprocket.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: November 27, 2012
    Assignee: Tsubakimoto Chain Co.
    Inventors: Shunji Sakura, Masatoshi Sonoda
  • Patent number: 8312987
    Abstract: A belt monitoring system employs a belt having at least one reinforcement member made from a conductive reinforcement material. A belt monitor is disposed in conjunction with the belt. The belt monitor comprises a field inductor excited by an applied signal. An electrical characteristic of at least a portion of the field inductor as influenced by changes in the electrical properties of the conductive reinforcement member is monitored in order to determine a physical condition of the conductive reinforcement member and thereby monitor a physical characteristic of the belt. This monitoring may be carried out by a sense inductor disposed adjacent or in conjunction with the field inductor.
    Type: Grant
    Filed: January 16, 2008
    Date of Patent: November 20, 2012
    Assignee: The Gates Corporation
    Inventors: David Lynn, Graeme Knox, Carl Wacker, Ralph Moffett, William Stewart, Idir Boudaoud, Alan Kenneth McCall, Dave Hanes
  • Patent number: 8298665
    Abstract: A power transmission belt comprising a polyester tensile cord having a heat shrinkage at 100° C. of less than 1% and/or a heat shrinkage at 150° C. of less than about 1.5% and/or a dimensional stability index of less than about 6%. The belt has a heat shrinkage after 24 hours at 100° C. of less than 1%. The polyester may be that sold under the trade name A360 or A363 by Performance Fibers, Inc. or equivalent polyethylene terephthalate. The tensile cord is particularly suited for use in V-belts for variable speed drives.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: October 30, 2012
    Assignee: The Gates Corporation
    Inventor: Shawn Xiang Wu
  • Publication number: 20120071285
    Abstract: An inclined partial cylinder tooth shape for a block transmission belt that can be used with single tooth cones, cones with two opposite teeth, and transmission pulleys. Said inclined partial cylinder tooth shape allows for full surface to surface contact engagement between the engaging surfaces used for torque transmission in transmissions using block transmission belts, which is not achievable with currently known tooth shapes for a block transmission belt.
    Type: Application
    Filed: September 15, 2011
    Publication date: March 22, 2012
    Inventor: Armin Sebastian Tay
  • Patent number: 8088029
    Abstract: In a chain transmission, the guide-contacting portions of inner and outer plates of a chain each comprise a pair of front and rear flat surfaces, an intermediate concave oil-retaining surface and convex connecting surfaces. The lengths of the flat surfaces are such that adjacent flat surfaces of overlapping inner and outer plates overlap even when the plates in contact with the portion of a convex guide surface having the smallest radius of curvature.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: January 3, 2012
    Assignee: Tsubakimoto Chain Co.
    Inventors: Takashi Tohara, Tatsuya Konishi, Toyonaga Saitoh
  • Patent number: 8038559
    Abstract: The end faces of a first pin contain bulging curved faces having an egg-like shape, when viewed along a chain width direction. Each bulging curved face includes a first end portion, a second end portion and a maximum width portion with respect to a chain advancing direction. With respect to perpendicular directions, the distance between the center of the maximum width portion and the first end portion is relatively large, whereas the distance between the center of the maximum width portion and the second end portion is relatively short. It is possible to enlarge the surface area of the bulging curved face.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: October 18, 2011
    Assignee: JTEKT Corporation
    Inventors: Seiji Tada, Shigeo Kamamoto
  • Publication number: 20110241269
    Abstract: The present invention is directed to a method of treating a reinforcement cord, comprising the steps of A) atomizing a mixture of at least one polymerizable monomer, a halogenated saturated hydrocarbon, and a carrier gas to form an atomized mixture; B) generating an atmospheric pressure plasma from the atomized mixture; and C) exposing the reinforcement cord to the atmospheric pressure plasma under conditions suitable to form a polymer strongly bonded to the tire cord and capable of bonding to rubber.
    Type: Application
    Filed: October 25, 2010
    Publication date: October 6, 2011
    Inventors: Frederic Gerard Auguste Siffer, James Gregory Gillick
  • Publication number: 20110165981
    Abstract: An energy harvesting system includes a heat engine and a component. The heat engine includes a belt, a first member, and a second member. The belt includes a strip of material and at least one wire at least partially embedded longitudinally in the strip of material. The wire includes a shape memory alloy material. A localized region of the at least one wire is configured to change crystallographic phase between martensite and austenite and either contract or expand longitudinally in response to exposure to a first temperature or a second temperature such that the strip of material corresponding to the localized region also contracts or expands. The first member is operatively connected to the belt and moves with the belt in response to the expansion or contraction of the belt. The component is operatively connected to the first member such that movement of the first member drives the component.
    Type: Application
    Filed: November 17, 2010
    Publication date: July 7, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Paul W. Alexander, Alan L. Browne, Nancy L. Johnson, Nilesh D. Mankame, Xiujie Gao, Geoffrey P. McKnight, Andrew C. Keefe, Peter Maxwell Sarosi, Christopher P. Henry, Patrick B. Usoro
  • Patent number: 7946940
    Abstract: The invention is directed to a drive belt of rubber or rubber-like plastic having a surface protection (5) which includes polyamide-containing textile reinforcement and/or polyester-containing textile reinforcement. On the outer side, a surface coating (6) of a friction-reducing material in a matrix of at least one elastic addition polymer is provided. For improved heat resistance with good protection against wear, the elastic addition polymer has less than 2% by weight based on the polymer of structural components —O—CxRy—O— with x=1-3 and y=0-6. The R in a structural component can be the same or can be different and is selected from hydrogen and/or carbon-containing groups.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: May 24, 2011
    Assignee: ContiTech Antriebssysteme GmbH
    Inventors: Henning Kanzow, Claus-Lueder Mahnken, Reinhard Teves
  • Publication number: 20110009219
    Abstract: The invention relates to a synchronous flat belt drive, wherein at least one series arrangement of projections (210) has a purely rolling engagement with a series arrangement of apertures on a flat belt (100). The flat belt (100) supports on a pulley (300) only radially, and on a rotation member (200) only tangentially. The generatrix of the series arrangement of apertures is the rolling of a pulley working surface cylinder with projecting projections (210) of a rotation member (200) formed as a face gear. The flat belt (100) is formed of at least a single strip in a layer arrangement of at least one layer, wherein the ends of the individual strips are variously arranged in a layer. An individual strip forms also several layers and is also as an endless strip part of a layer arrangement.
    Type: Application
    Filed: March 27, 2008
    Publication date: January 13, 2011
    Inventor: Ludwig Dierl
  • Publication number: 20100304909
    Abstract: There is described a resistant layer for a toothed belt and the toothed belt thereof comprising an elastomeric material body, in which a plurality of longitudinal filiform resistant inserts is embedded, and a toothing coated by a coating fabric. A resistant layer is adhered over the coating fabric, the resistant layer increasing the resistance to wear of the toothed belt and comprising an elastomer formed by a mixture of one or more copolymers, obtained from a dien monomer and a nitrile group-containing monomer, and an anti-friction material selected from the group consisting of molybdenum sulphide, copper powder, graphite, preferably in an amount up to 150 phr. The resistant layer is advantageously separate from the fabric and is calendered on the fabric itself.
    Type: Application
    Filed: September 25, 2008
    Publication date: December 2, 2010
    Inventors: Carlo Baldovino, Adriano Rolando
  • Patent number: 7837583
    Abstract: In a silent chain, link plates having two different back heights are arranged so that V-shaped oil guiding walls, opening in the direction of chain travel, are formed on the back of the chain that comes into sliding contact with the shoe of a chain guide.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: November 23, 2010
    Assignee: Tsubakimoto Chain Co.
    Inventor: Takashi Tohara
  • Patent number: 7789781
    Abstract: The timing belt and a coupling structure of the same are disclosed, in which a stress focused at a corner portion decreases by forming an optimum shaped groove at a corner portion of a timing belt, so that it is possible to largely increase a fatigue life span of a timing belt and a durability of a timing belt. In addition, noises and vibrations can be minimized by forming a through hole at a threaded surface of a timing belt or a threaded portion of a sprocket. In the timing belt, which has threads at a belt body, there is provided an improved timing belt comprising a groove formed at a corner portion in which the threads and the belt body contact with each other.
    Type: Grant
    Filed: February 2, 2006
    Date of Patent: September 7, 2010
    Inventors: Young Doo Kwon, Hyun Wook Kwon, Weon Kook Choi, Hyok Chun Kwon
  • Publication number: 20100137087
    Abstract: The invention proposes a chain for a machine drive, transport of material in a machine or the like, and also a packaging machine comprising one such chain, this chain being better than known link chains at meeting requirements in respect of hygiene conditions during operation and cleaning. This is achieved according to the invention in that flexible chain links (4) are provided between rigid chain links (2), the flexible chain links (4) being fixed to the rigid chain links (2).
    Type: Application
    Filed: August 7, 2006
    Publication date: June 3, 2010
    Inventors: Ivo Ruzic, Elmar Ehrmann
  • Patent number: 7695074
    Abstract: The present invention generally relates to braking systems for all-terrain vehicles. More particularly, the present invention relates to hand and foot actuated braking control systems for all-terrain vehicles.
    Type: Grant
    Filed: May 26, 2006
    Date of Patent: April 13, 2010
    Assignee: Polaris Industries, Inc.
    Inventor: Harry Pongo
  • Publication number: 20100044158
    Abstract: The invention relates to a traction device (1), especially for an elevator system. The traction device (1) is driveable by a traction sheave. The task which is the basis of the invention is to provide a traction device which is simple to manipulate. High tension forces are transferable and the traction device makes possible a drive unit of lesser width compared to the known belt technology. For this purpose, the traction device is configured as a composite rope (1) wherein individual tension carriers (2, 3) are connected to each other via a one-sided elastomer connecting layer (4). The individual tension carriers (2, 3) lie in parallel and are jacketed with elastomeric material. The tension carriers (2, 3) engage in corresponding grooves (13) of the traction sheave (10). The tension carriers (2, 3) engage in the grooves (13) of the traction sheave (10) with at least 25% of their total diameter.
    Type: Application
    Filed: October 30, 2009
    Publication date: February 25, 2010
    Inventor: Hubert Göser
  • Publication number: 20090286641
    Abstract: A pump drive of an automatic transmission with a hydrodynamic torque converter driven by a drive motor and with an oil pump driven by a pump wheel of the torque converter. The pump wheel of the torque converter is connected to a converter hub that extends from the pump wheel in the direction opposite the drive motor and is mounted radially by way of a converter hub bearing in or on a wall of the automatic transmission fixed with respect to the transmission housing and radially encloses a section of a pump drive shaft of the oil pump. The pump drive shaft is radially centered in the converter hub and, on its side facing toward the drive motor, is connected to the converter hub by a driving profile.
    Type: Application
    Filed: June 29, 2007
    Publication date: November 19, 2009
    Applicant: ZF Friedrichshafen AG
    Inventor: Matthias List
  • Patent number: 7572200
    Abstract: A chain drive system includes a drive sprocket, a driven sprocket and a chain looped over the drive sprocket and the driven sprocket. The chain and the sprocket having respective sliding surfaces slidable relative to each other in the presence of lubricating oil, and any adjacent chain components of the chain having respective sliding surfaces slidable relative to each other in the presence of lubricating oil. At least one of the sliding surfaces between the chain and the sprocket and at least one of the sliding surfaces between any adjacent chain components have hard carbon coatings formed on base portions thereof. Each of the hard carbon coatings has a hydrogen content of 10 atomic % or less.
    Type: Grant
    Filed: August 10, 2004
    Date of Patent: August 11, 2009
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Takashi Murata, Takuya Hirata, Makoto Kano, Yutaka Mabuchi, Takahiro Hamada, Masashi Yamaguchi
  • Patent number: 7534182
    Abstract: In a sprocket for a chain transmission, teeth are disposed around the circumference of the sprocket at intervals. Arc-shaped tooth gap bottoms are formed between adjacent teeth, and each tooth gap bottom is continuous with the facing tooth surfaces of its adjacent teeth. Each tooth is formed so that its thickness is greater than the thickness of an ISO tooth form and gradually becomes thinner from the pitch line toward the tooth head. At engagement of the chain with the sprocket, a roller first comes into contact with a back tooth surface so that polygonal movement is suppressed.
    Type: Grant
    Filed: November 1, 2005
    Date of Patent: May 19, 2009
    Assignee: Tsubakimoto Chain Co.
    Inventor: Masatoshi Sonoda
  • Publication number: 20090088278
    Abstract: An annular metal cord includes an annular core portion formed in an annular shape, and an outer layer portion spirally wound around the annular core portion while running over an annular circumference thereof plural times and covering an outer peripheral surface of the annular core portion. Each of the annular core portion and the outer layer portion are formed by a strand material which is formed by intertwisting a plurality of metal filaments. The annular core portion and the outer layer portion are formed by a continuous strand material.
    Type: Application
    Filed: September 5, 2007
    Publication date: April 2, 2009
    Applicants: SUMITOMO (SEI) STEEL WIRE CORP., SUMITOMO ELECTRIC TOCHIGI CO., LTD.
    Inventors: Hiroshi Sasabe, Hitoshi Wakahara, Yuichi Sano, Kenichi Okamoto
  • Publication number: 20090042683
    Abstract: In a silent chain, link plates having two different back heights are arranged so that V-shaped oil guiding walls, opening in the direction of chain travel, are formed on the back of the chain that comes into sliding contact with the shoe of a chain guide.
    Type: Application
    Filed: June 20, 2008
    Publication date: February 12, 2009
    Applicant: Tsubakimoto Chain Co.
    Inventor: Takashi Tohara
  • Patent number: 7442139
    Abstract: In a slat conveyor, slats for supporting conveyed articles and personnel extend between two side-by-side, spaced, endless roller chains engaged with driving sprockets at one end of the conveying path and driven sprockets at the other end. At a location radially outward from the pitch circle, the distance between the front surface of the sprocket teeth to the tooth center line is at least as great as the distance from the centerline to the front surface at the pitch circle. The tooth faces merge smoothly with the tooth gap bottom, and the root diameter is smaller than the root diameter according to ISO standards.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: October 28, 2008
    Assignee: Tsubakimoto Chain Co.
    Inventors: Aizoh Kubo, Hiroki Ishida, Masatoshi Sonoda
  • Patent number: 7416500
    Abstract: A sprocket and a roller chain drive system including same are disclosed. The sprocket is a random engagement sprocket comprising a first plurality of A-profile teeth formed with a first asymmetric profile and a second plurality of B-profile teeth formed with a second asymmetric profile. The A-profile teeth each define a first pressure angle and the B-profile teeth each define a second pressure angle that is at least 5 degrees greater than said first pressure angle so that a minimum separation ? is defined. The sprocket is defined with added chordal pitch reduction of 0.2% up to 1% relative to the link pitch of the associated roller chain. The sprocket can be defined with root relief and/or can comprise resilient cushion rings. Initial roller contacts made with the A-profile and B-profile teeth are modulated owing to the pressure angle separation and added chordal pitch reduction.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: August 26, 2008
    Assignee: Cloyes Gear and Products, Inc.
    Inventors: James D. Young, Kurt M. Marshek
  • Patent number: 7357742
    Abstract: Rolling surfaces of rocker pressure members of plate-link chains for conical disk transmissions are constructed as freeform surfaces in such a way that their radius of curvature changes in a direction transverse to the longitudinal extent of the rocker pressure members and/or the thickness in the longitudinal direction of the rocker pressure members changes. In that way, the acoustic properties and the wear behavior of the plate-link chains can be improved.
    Type: Grant
    Filed: March 20, 2004
    Date of Patent: April 15, 2008
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Uwe Wagner, André Teubert, Andreas Triller
  • Publication number: 20070225096
    Abstract: 1.
    Type: Application
    Filed: February 8, 2007
    Publication date: September 27, 2007
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventor: Shin Fujita
  • Patent number: 7270619
    Abstract: a linear actuator capable of transmitting tractive forces as well as thrust forces and operating then as a rigid single-piece rod. The linear actuator has two identical actuating belts (1, 1?) with notches on each of their sides (10, 10?; 11, 11?) and provided on one first side (10, 10?) with uniformly spaced blocks (2, 2?) which mesh with drive members (3) such that the two actuating belts (1, 1?) are independent upstream of the drive members (3), whereas downstream of the drive members, they are integrally assembled so as to define a section extending along a straight line wherein the linear actuator operates like a single-piece rigid rod.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: September 18, 2007
    Assignee: Serapid France
    Inventor: Joël Bourc'His
  • Publication number: 20070191162
    Abstract: A cable moving member operation device includes an operation pulley, a driven pulley for interlocking with a moving member, a outer cable having both end portions disposed in the vicinity of both of the pulleys, respectively, a control cable inserted into the outer cable for transferring rotation of the operation pulley to the driven pulley, a first supporting portion for supporting one end portion of the outer cable in the vicinity of one of the pulleys, a second supporting portion located in the vicinity of the other of the pulleys for supporting the other end portion of the outer cable in a longitudinal direction, a biasing device for biasing the other end portion of the outer cable to one end portion of the outer cable, and a ratchet mechanism for preventing the other end portion of the outer cable from moving in a direction opposite to a biasing direction.
    Type: Application
    Filed: February 8, 2007
    Publication date: August 16, 2007
    Inventor: Shuko Yamamoto
  • Publication number: 20070191163
    Abstract: The invention is directed to a drive belt of rubber or rubber-like plastic having a surface protection (5) which includes polyamide-containing textile reinforcement and/or polyester-containing textile reinforcement. On the outer side, a surface coating (6) of a friction-reducing material in a matrix of at least one elastic addition polymer is provided. For improved heat resistance with good protection against wear, the elastic addition polymer has at least 2% by weight based on the polymer of structural components —O—CxRy—O— with x=1-3 and y=0-6. The R in a structural component can be the same or can be different and is selected from hydrogen and/or carbon-containing groups.
    Type: Application
    Filed: February 9, 2007
    Publication date: August 16, 2007
    Inventors: Henning Kanzow, Claus-Lueder Mahnken, Reinhard Teves
  • Patent number: 7128673
    Abstract: In a sprocket for a roller chain, the tooth form is such that the distance between the tooth center line and a part of the front tooth surface, at a location on the tooth head side of the pitch line, is greater than the distance between the tooth center line and the front surface of the tooth along the pitch line. The diameter of the tooth gap bottom circle is smaller than the diameter of a tooth gap bottom circle in a sprocket having an ISO tooth form for the same chain.
    Type: Grant
    Filed: July 2, 2004
    Date of Patent: October 31, 2006
    Assignee: Tsubakimoto Chain Co.
    Inventors: Aizoh Kubo, Masatoshi Sonoda, Toyonaga Saitoh
  • Patent number: 6896430
    Abstract: A compliant belt attach assembly for use in a printer includes a belt attach and a drive belt having a drive lug. The belt attach defines a lug chamber for containing the drive lug of the drive belt. First and second drive bars are configured to contact the first and second sides of the drive lug to allow drive lug deformation in response to vibration transmitted by the drive belt.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: May 24, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Martin R. Williams
  • Patent number: 6875140
    Abstract: Engine auxiliary unit driving equipment for transmitting an engine driving force from a crank pulley to a plurality of engine auxiliary units include an alternator and a driven poly-V pulley, provided at least in the alternator, has a plurality of grooves extending in a circumferential direction. A poly-V belt, which has a plurality of projections extending in a longitudinal direction to correspond to grooves of the poly-V pulley, bridges between a crank pulley and the poly-V pulley. The poly-V belt is substantially divided in an axial direction of the driven poly-V pulley into two pieces each having plural pieces of the projections. Accordingly, a tensile strength acting in a width direction of the poly-V belt is substantially divided midway between the divided poly-V belts to reduce cracking in the round poly-V belt, resulting in longer life of the poly-V belt.
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: April 5, 2005
    Assignees: Denso Corporation, Nippon Soken, Inc.
    Inventors: Shigenobu Nakamura, Hitoshi Irie, Atsuo Ishizuka
  • Patent number: 6869375
    Abstract: An active vibration control system provides a mass which is movable through a large excursion while minimizing the system size in two of three dimensions to compensate for sensed vibrations. A first rotating member is rotatable about a first axis and a second rotating member is rotatable about a second axis to drive a belt mounting a mass. The first axis is offset from the second axis such that as the members are rotated, the belt is driven about an elongated path. This arrangement generates an impulsive vibratory force as the mass passes over each of the rotating members and quickly changes direction. A belt including a sinusoidal mass distribution generates a vibratory force that is a smooth sinusoidal output. Multiple systems are suitably usable in conjunction with one another to provide a wide range of vibratory outputs.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: March 22, 2005
    Assignee: Sikorsky Aircraft Corporation
    Inventor: William Arthur Welsh
  • Patent number: 6866603
    Abstract: A belt drive system for use in a positive drive application includes a transmission belt having a row of drive teeth spaced apart along a first side and a non-toothed opposite second side. The system includes a driver pulley, a counter-rotating driven pulley or pulleys, and the transmission belt. The counter-rotation is achieved by the incorporation of a 180 degree twist in a belt span between the driver pulley and the driven pulley and a recovery twist in a second belt span from the driven pulley back to the driver pulley.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: March 15, 2005
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Mark Alan Ackerman, Travis Ray Toline
  • Publication number: 20040185977
    Abstract: A sprocket and a roller chain drive system including same are disclosed. The sprocket is a random engagement sprocket comprising a first plurality of A-profile teeth formed with a first asymmetric profile and a second plurality of B-profile teeth formed with a second asymmetric profile. The A-profile teeth each define a first pressure angle and the B-profile teeth each define a second pressure angle that is at least 5 degrees greater than said first pressure angle so that a minimum separation &Dgr; is defined. The sprocket is defined with added chordal pitch reduction of 0.2% up to 1% relative to the link pitch of the associated roller chain. The sprocket can be defined with root relief and/or can comprise resilient cushion rings. Initial roller contacts made with the A-profile and B-profile teeth are modulated owing to the pressure angle separation and added chordal pitch reduction.
    Type: Application
    Filed: April 1, 2004
    Publication date: September 23, 2004
    Applicant: Cloyes Gear and Products, Inc.
    Inventors: James D. Young, Kurt M. Marshek
  • Publication number: 20040138020
    Abstract: Tooth-shaped link member (1) for a transport tooth chain (11) with apertures (2) and two end-terminal toes (3) for the form-fitting engagement with a gear 99), which is geometrically adapted to the configuration of the gear (9), and which in addition each exhibit a lower contact surface (6) for gliding on a gliding surface of a guide body (8), wherein as an additional means for reducing the wear on the link member (1) a third gliding toe (4) is provided with does not come in form-fitting contact with the gear (9) which is arranged centrally between the end-terminal toes (2) of the link member 91) in order to enlarge the total surface of the link member on the gliding surface (7).
    Type: Application
    Filed: August 6, 2003
    Publication date: July 15, 2004
    Applicant: REXROTH MECMAN GMBH
    Inventor: Thorsten Meyer
  • Patent number: 6761657
    Abstract: A sprocket is defined to include added chordal pitch reduction when in a new or “as-manufactured” condition. The sprocket chordal pitch Ps′ is purposefully reduced as compared to the as-built chain pitch Pc (or a theoretical maximum sprocket chordal pitch) a select amount referred to herein as “added chordal pitch reduction.” This added chordal pitch reduction is in addition to the inherent chordal pitch reduction that exists owing to manufacturing tolerances. A sprocket incorporating added chordal pitch reduction is highly desired in that it facilitates extension of the meshing time interval for an associated chain roller. The sprocket is formed to have a chordal pitch that is reduced relative to a maximum theoretical sprocket chordal pitch (or the chain link pitch) by an amount between about 0.2% and about 1% of the maximum theoretical sprocket chordal pitch.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: July 13, 2004
    Assignee: Cloyes Gear and Products, Inc.
    Inventor: James D. Young