Abstract: A gear device includes an external gear, and an internal gear that meshes with the external gear. The external gear is formed of metal. The internal gear is formed of a carbon fiber reinforced resin.

Abstract: A gear assembly includes a first gear and a second gear. The first gear rotates about a first axis, and includes a first plurality of teeth and a first surface extending circumferentially and carried by the first plurality of teeth. The first surface is electrically conductive. The second gear rotates about a second axis and is operably connected to the first gear. The second gear includes an electrically conductive element, a second plurality of teeth, and a second surface extending circumferentially and carried by the second plurality of teeth. The second surface is electrically nonconductive. The electrically conductive element includes a plurality of feelers with each feeler projecting radially outward and into a respective tooth of the second plurality of teeth.

Abstract: In a sprocket including a cushion ring coming into contact with link plates of a chain, the cushion ring includes, on an outer circumferential surface, a plurality of convex sections coming into contact with the link plates, and the plurality of convex sections are provided at corresponding positions to tooth tips at identical pitches to a plurality of teeth and include convex sections having different shapes.

Abstract: A toothed wheel system for an internal combustion engine of a motor vehicle is provided. The least one tooth system has a plurality of teeth that follow one another in the circumferential direction of the gear wheel, and at least one elastomer track adjoining the tooth system in the axial direction. The elastomer track is formed as a regular polygon on the outer circumferential side. The number of sides of the polygon correspond to the number of teeth.

Abstract: A toothed wheel system for an internal combustion engine of a motor vehicle is provided. The least one tooth system has a plurality of teeth that follow one another in the circumferential direction of the gear wheel, and at least one elastomer track adjoining the tooth system in the axial direction. The elastomer track is formed as a regular polygon on the outer circumferential side. The number of sides of the polygon correspond to the number of teeth.

Abstract: A bicycle gear having a first coating layer obtained by a plasma electrolytic oxidation treatment and a second coating layer, overlapped on the first coating layer, that is a lubricating substance, preferably a fluoropolymer.

Abstract: An improved rear pulley for a rear wheel vehicle having a flexible drive belt. The improved rear pulley has a pulley ring that includes pulley teeth for gripping the flexible drive belt, and a pulley ring wall that extends inwardly from the pulley ring. The pulley ring contains sides for maintain the flexible drive belt on the pulley teeth. The improved rear pulley has an outer hub that has an exterior and an interior outer hub surface. The interior outer hub surface has a first, a second and a third interior outer hub face. The exterior outer hub surface has an outer hub wall that extends outwardly. The improved rear pulley has an inner hub that includes an exterior and an interior inner hub surface. The improved rear pulley has bearings and a sprag clutch for allowing rotation and directional rotation, respectively, of the outer hub about the inner hub.

Abstract: A carbon fiber toothed structure has a body. The body is circular and has a toothed segment and at least one carbon fiber cloth. The toothed segment is formed on an outer periphery of the body. The at least one carbon fiber cloth is deposited on a front side and a rear side of the body from a center to the outer periphery of the body to cover the toothed segment. The body is made by stacking multiple circular carbon fiber cloths of different diameters with each other. Some of the carbon fiber cloths deposited in the body have smaller diameters than those of the others of the carbon fiber cloths to enable the center of the body being thicker than the outer periphery of the body. The toothed segment has two guiding inclined planes respectively deposited on the front side and the rear side of the body.

Abstract: A compression ring of a chain sprocket is provided with improved wear characteristics and damping to match various forms of link plates of a chain assembly. The chain assembly includes a plurality of longitudinal link plates hingedly connected by a plurality of pins. The compression ring includes two arrays of compression pads, each array defined by a different profile. Each array of compression pads can be matched to two corresponding groups of link plates. Multiple forms of compression pads and link plate geometries can be accommodated. Compression pad damping force can be tuned by adjusting the width and/or height of the link plates.

Abstract: A roller chain sprocket includes a body with a hub and a row of teeth that extends circumferentially around the hub such that the hub extends axially outward on opposite first and second sides of the row of teeth. The teeth are separated from each other by tooth spaces, wherein each of said tooth spaces is bisected by a radial tooth space centerline. First and second elastomeric cushion rings are respectively bonded to the hub on the opposite first and second sides of the row of teeth, with cushion ring extending circumferentially about the hub and including a plurality of compression pads separated from each other by axially extending transverse grooves. Each of the compression pads includes a planar or otherwise flat outer surface that is connected to a respective preceding one of the grooves by a leading corner surface and connected to a respective trailing one of the grooves by a trailing corner surface.

Abstract: A variable cam phaser system including a variable cam phaser and a vibration damper fixed to the variable cam phaser is disclosed. A method for damping vibration for a variable cam phaser is also disclosed. The method includes providing a variable cam phaser, providing a vibration damper, and fixing the vibration damper to the variable cam phaser.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.