Abstract: A hub is provided for a human-powered vehicle, and includes a hub axle, a rotating body, a bearing, an inner retainer and an outer retainer. The rotating body is rotatably mounted on the hub axle. The bearing rotatably coupling the rotating body to the hub axle. The bearing includes an inner race, an outer race and a plurality of roller elements. The inner race has an axially facing portion abutting an inner abutment of the hub axle. The outer race has an axially facing portion abutting an outer abutment of the rotating body. The roller elements are disposed between the inner race and the outer race. The inner retainer is coupled to the hub axle and abuts an axially facing portion of the inner race. The outer retainer is coupled to the rotating body and abuts an axially facing portion of the outer race.

Abstract: A rear sprocket assembly comprises a first sprocket and a lock device. The lock device includes a first lock member and a second lock member. The first lock member includes a first axial end and a second axial end. The second lock member includes a third axial end and a fourth axial end. The third axial end is configured to be attached to the second axial end of the first lock member in an assembled state where the first sprocket and the lock device are assembled as one unit. The fourth axial end has at least one radial projection configured to abut against a first sprocket in the axial direction in the mounting state. The lock device is configured so that the first sprocket is slidable relative to the lock device in the axial direction in the assembled state and before the mounting state.

Abstract: A multi-sprocket assembly for a bicycle rear wheel assembly comprising a multi-sprocket arrangement and a locking screw arrangement. The multi-sprocket arrangement is configured to be couplable to a driver of the wheel assembly in a torque-transmitting manner and comprises at least eleven sprockets. The multi-sprocket assembly is configured such that at least two of the smallest sprockets are axially fixed to the driver via the locking screw arrangement. The locking screw arrangement has a shaft portion for receiving at least one sprocket. The shaft portion has an axially outer stop portion at one end region and at least one external thread at an opposite end region. The external thread configured to be screwed into an associated internal thread to fix the locking screw arrangement. The external thread has an outer diameter which is larger than an outer diameter of a shaft portion region that receives the at least one sprocket.

Abstract: A bicycle hub includes an axle, a main body, a freehub body, and a clutch, which are engaged with the axle. The freehub body is disposed with first splines, wherein each of the first splines is defined to have a longitudinal direction. Each of the longitudinal directions obliquely intersects with an axial direction of the freehub body. The clutch is disposed with second splines, wherein the second splines are engaged with the first splines in a way that the second splines are movable along a longitudinal direction of the first splines. With such design, the clutch of the bicycle hub could be smoothly operated.

Abstract: A pedaled drivetrain includes a drive mechanism, a wheel, a freewheel hub, and a locking mechanism. The wheel has a rotational axis. The freewheel hub connects the drive mechanism to the wheel, and the freewheel hub transmits torque from the drive mechanism to the wheel in a first rotational direction around the rotational axis. The locking mechanism has a locked state and an unlocked state. The locked state rotationally fixes a component of the drive mechanism to the wheel relative to the rotational axis.

Abstract: A bicycle hub includes an axle, a main body, a freehub body, and a clutch, which are engaged with the axle, wherein the clutch includes a first ratchet and a second ratchet. The first ratchet and the second ratchet are respectively engaged with the main body and the freehub body. The first ratchet has a first engaging surface, and the second ratchet has a second engaging surface facing the first engaging surface. The bicycle hub is characterized in that a minimum of number of first ratchet teeth on the first engaging surface is seventy-two, and a number of the second ratchet teeth on the second engaging surface is lesser than the number of first ratchet teeth. With such design, when the first ratchet is meshed with the second ratchet, the freehub body could stably drive the main body, and a total weight of the bicycle hub could be decreased.

Abstract: A rear sprocket assembly comprises a first sprocket, a second sprocket, and at least one tooth-position maintaining member. The at least one tooth-position maintaining member is configured to maintain a relative position between a plurality of first sprocket teeth and a plurality of second sprocket teeth in a circumferential direction with respect to a rotational center axis. The at least one tooth-position maintaining member includes a fixed portion and at least one guide portion. The fixed portion is configured to be fixed to one of the first sprocket and the second sprocket. The at least one guide portion is configured to engage with the other of the first sprocket and the second sprocket such that the other of the first sprocket and the second sprocket is slidable relative to the one of the first sprocket and the second sprocket in the axial direction.

Abstract: A bicycle rear wheel sub-assembly having a sprocket-carrying body, a cogset including a plurality of axially adjacent sprockets with at least three of the plurality of sprockets formed into a monolithic set and a ring nut securing the cogset to the sprocket-carrying body. The ring nut is formed as two parts assembled together—an axially outer first part on which a tubular body and a flange are formed, and an axially inner second part on which a threaded portion is formed. This structure provides a simple and effective coupling of the ring nut with the monolithic sub-set of the cogset and the sprocket-carrying body.

Abstract: A cogset with a plurality of sprockets has a subset of the sprockets connected together in a monolithic subset that is mounted directly in engagement with a coupling profile on the radially peripheral surface of a sprocket in the monolithic subset. The direct shape coupling between the sprocket of the monolithic subset and the sprocket-carrying body makes it possible to have very high solidity and rigidity of coupling to ensure the maximum precision of actuation of the gearshift that uses the sub-assembly.

Abstract: A bicycle freewheel assembly is provided which is capable of being readily and reversibly switched from fixed-gear to freewheel operation, without the necessity of removing the wheel from the bicycle. The freewheel assembly is mountable on pre-existing freewheel hubs.

Abstract: A bicycle rear wheel adapter has an annular body that abuts a sprocket-carrying body that extends in an axially outer direction and receives sprockets in radially peripheral positions. A coupling element on the annular body couples with the sprocket-carrying body so the adapter rotates as a unit with the sprocket-carrying body, and a sprocket-receiving seat on the annular body couples with a sprocket so the adapter rotates as a unit with the sprocket. The adapter is suitable for cogsets with small sprockets grouped in a monolithic grouping.

Abstract: The invention relates to a multi-speed transmission on a central axis (6a), comprising a drive-side hollow shaft (4a) and an output-side hub sleeve (I) and two, at least two-stage, planetary gearboxes (EG, NSG), arranged coaxially therebetween or therein, each gearbox having sun gears, planetary gears which are connected to one another via associated frames, and ring gears, and each can be shifted into a direct drive and into a plurality of stepped conversion modes, wherein the first planetary gearbox (EG) is driven on its frame (8) and can be selectively shifted, by means of three clutches (20, 30, 40), into the direct drive or by axially fixing individual sun gears (9c,9d) into said transmission modes, and the second planetary gearbox (NSG) can be shifted by further clutches (50, 60, 70, 80, 90) by means of an axial fixing of the sun gear (204) when the input drive and output drive are shifted between its ring gear (200) or frame (202) into a conversion mode at a low speed and into a conversion mode at high

Abstract: A freewheel for changing a transmission characteristic of a planetary transmission for a motor vehicle transmission. The freewheel has a first ring which has a first blocking contour, a second ring which is rotatable relative to the first ring and which has a second blocking contour, tiltable blocking bodies which can be caused to engage into the first blocking contour and into the second blocking contour, and a switching element for tilting the blocking bodies. The switching element, in a blocking position, clamps the blocking bodies immovably to the first blocking contour and to the second blocking contour, in a freewheel position, allows unidirectional freewheeling, and in an inactive position, holds the blocking bodies down on the first ring so as to be spaced apart from the second ring.

Abstract: Wheel hub arrangement for a drive with rotated drum that has a stationary shaft (13); a hollow drum (19, 20) arranged by bearings around it, a wheel drum (32) that includes a hub of the driven wheel, and freewheels, inner sleeve (21, 22) which are arranged around the stationary shaft (13) by bearings, and placed partially in the cavity of the drum (19, 20). The wheel hub arrangement for a drive with rotated drum for bicycles, street stepper vehicles, wheelchairs and tricycles.

Abstract: An electronic automatically decoupling hub assembly is disclosed herein. The decoupling hub assembly has an axle and a hub shell rotationally positioned about the axle. A controller provides automatic activation/deactivation signals to an inductor. The decoupling hub assembly has a bearing rotationally positioned about the axle and a cassette body assembly, having a plurality of teeth, rotationally positioned about the bearing. One or more pawls are provided to engage with at least some of the teeth of the cassette body assembly and a seal is used to contain the pawls within the decoupling hub assembly. A cassette body assembly is coupled with the ratchet ring and an end cap is used to prevent a contaminant from entering into the decoupling hub assembly.

Abstract: An interchangeable hub system for a bicycle having an internal component holding a wheel cassette and a hub shell having wheel (spokes, tires) built thereon. The hub system allows for the internal component with the cassette to be interchanged between hub shells allowing for cassettes to be interchanged between wheels sets without a number of specialized tools.

Abstract: A multiple sprocket arrangement is mountable to a rear axle arrangement of a bicycle. The multiple sprocket arrangement includes a sprocket assembly having a plurality of sprockets with different numbers of teeth. The sprocket assembly includes a support ring integrated with at least a largest sprocket of the plurality of sprockets. The support ring is firmly connected to the remaining sprockets and has a torque transmitting section.

Abstract: A bicycle hub assembly comprises a hub axle, a hub shell, a sprocket support body, a first ratchet member, a second ratchet member, a first biasing member, at least one receiving member, and a second biasing member. The first ratchet member is provided between the second ratchet member and the first biasing member in an axial direction. The at least one receiving member is provided between the first ratchet member and the first biasing member in a radial direction with respect to a rotational axis. The at least one receiving member includes a radially receiving part having a radially outer surface. The second biasing member contacts the radially outer surface of the radially receiving part to bias the radially receiving part toward the rotational axis in the radial direction.

Abstract: A bicycle hub structure includes: a hub body including a first clutch ring, a sprocket support body connecting to the hub body and including a second clutch ring, first magnets and a magnetic ring. The magnetic ring is disposed on an axial side of the second clutch ring far away from the hub body, and the first magnets are disposed on a side of the second clutch ring adjacent to the magnetic ring. The sprocket support body includes a first state and a second state. In the first state, the first magnets and the magnetic ring attract the first clutch ring, so that the first clutch ring is in contact with the second clutch ring, and in the second state, a magnetic attracting force of the first magnets and the magnetic ring on the first clutch ring is less than that in the first state.

Abstract: A wheel hub assembly for a bicycle is disclosed. The wheel hub assembly may comprise a hub shell for a wheel and coupled to a hub body with an axle by a ratchet mechanism and configured to provide an engaged state where the hub body/axle and the hub shell/wheel rotate together and a disengaged state where the hub body/axle may rotate independently relative to hub shell/wheel; the ratchet mechanism may comprise a set of ratchet rings configured with a set of teeth and sets/groups of pawls configured to engage/disengage the teeth of a ratchet ring; ratchet rings may be configured/installed in the hub body in an aligned condition or an offset condition; when ratchet rings are configured in an offset condition the ratchet mechanism may be configured to facilitate a generally more responsive transition between the disengaged state and the engaged state for the hub body/axle and hub shell/wheel.

Abstract: A multiple-sprocket arrangement for mounting on a rear wheel axle arrangement of a bicycle is provided. The multiple-sprocket arrangement includes a sprocket assembly having a plurality of sprockets of different sizes, and/or different numbers of teeth, disposed along an axis of rotation, for example of the rear wheel axle arrangement. The sprocket assembly includes a torque transmitting section configured to transmit torque to a hub sleeve, the torque transmitting section disposed along a first length of the rotation axis, and at least two sprockets having a smaller inner diameter than an outer diameter of the hub sleeve, the at least two sprockets formed as a separate piece, or pieces, from other sprockets of the plurality of sprockets and positioned over a second length along the rotation axis, the second length distinct from, and disposed outboard of, the first length.

Abstract: A multiple sprocket arrangement is mountable to a rear axle arrangement of a bicycle. The multiple sprocket arrangement includes a sprocket assembly having a plurality of sprockets with different numbers of teeth. The sprocket assembly includes a support ring integrated with at least a largest sprocket of the plurality of sprockets. The support ring is firmly connected to the remaining sprockets and has a torque transmitting section.

Abstract: A hub for bicycles or the like including a hub shell which is rotatably supported relative to a hub axle, a rotor rotatably supported relative to the hub axle, and a freewheel device having two interacting freewheel components namely, a hub-side freewheel component and a rotor-side freewheel component. The two freewheel components each contain axial engagement components. The hub-side freewheel component is non-rotatably and axially fixedly connected with the hub shell. The rotor-side freewheel component is non-rotatably connected with the rotor and is movable in the axial direction relative to the rotor and the hub shell between a freewheel position and an engagement position. Rolling members are provided for defined accommodation in the hub-side freewheel component to support the hub shell relative to the hub axle. The hub-side freewheel component is connected with the hub shell through a multiple thread having at least two separate, axially spaced apart thread grooves.

Abstract: To provide a bicycle hub unit and a bicycle wheel assembly that allow a wheel unit to be appropriately coupled to a hub body, a bicycle hub unit is coupled to a rotary body to which a brake is applied by a brake device. The bicycle hub unit includes a hub body that rotates around a hub axle and a rotary body coupling portion that couples the rotary body to the hub body. The hub body includes a first joint portion and a second joint portion. The first joint portion includes an external thread coupled to an internal thread of the wheel unit. The second joint portion is coupled to a restriction member that restricts relative rotation of the first joint portion and the wheel unit.

Abstract: A rear wheel fixing mechanism for a bicycle is provided that includes an axle, a rear hub body, and a first clamp. The rear hub body is rotatably mounted around the axle about a rotational center axis. The first clamp is configured to exert a first clamping force in a perpendicular direction with respect to the rotational center axis onto a first clamping portion of the axle to mount the axle on a frame of the bicycle.

Abstract: A roller chain based drive train for a bicycle includes a sprocket assembly configured for mounting to a hub of a rear wheel of the bicycle. The sprocket assembly includes a smaller sprocket, a larger sprocket, and a plurality of pins connecting the smaller sprocket and the larger sprocket to each other. The pins are mounted in outer pin mount holes on the smaller sprocket and in the inner pin mount holes on the larger sprocket.

Abstract: The bicycle hub assembly includes a hub axle, a hub body, a bearing unit, a lock member, and a tool engagement member. The bearing unit is configured to rotatably support the hub body around the hub axle with respect to the rotational center axis. The bearing unit includes an outer race, an inner race and a plurality of rolling members. The lock member prevents the inner race of the bearing unit from rotating relative to the hub axle. The tool engagement member is configured to rotate the inner race of the bearing unit relative to the hub axle.

Abstract: A bicycle cassette comprises two segments that are attached together thereby forming a composite cassette that can be attached to a rear bicycle hub driver body. The bicycle cassette allows for the use of a smaller sprocket on one segment of the cassette because the smaller sprockets can overhang the hub driver body. Specifically, the cassette allows a small 9 or 10 tooth sprocket to overhang the cassette driver body on the bicycle hub by attaching a small sprocket assembly to a larger sprocket assembly using a locking, bayonet style attachment.

Abstract: A low-backlash multimode clutch includes a one-way bearing allowing rotation in a first direction as well as a number of actuatable pawls in one race and a number of receiving slots having engagement faces in the other race. The engagement faces are tilted such that when the pawls are actuated, any torque applied in the first direction tends to force the pawls outward but the pawls are retained inward, such as by actuator rods. In this way, the one-way clutch may be selectively locked and unlocked with zero backlash against the one-way bearing.

Abstract: A reinforcement for a hub ratchet base comprising a chain-ring and a ratchet ring. The chain-ring is made of an aluminum material having a chain-ring socket and an assembly shaft. The ratchet ring is made of a metal material with high hardness which can be the titanium alloy material or the chrome-molybdenum steel material. The ratchet ring has an engaging slot corresponding to the assembly shaft of the chain-ring. There are at least three connecting slots disposed on the ratchet ring for accepting at least three ratchet members and at least three corresponding elastic members. Each of the connecting slots of the ratchet ring has a pivoting portion on an end for engaging with a ratchet member and an engaging portion on another end for engaging with an elastic member such that the elastic member pushes against a bottom portion of the ratchet member.

Abstract: A three-way switchable clutch, including: outer and inner rings; and pawls non-rotatably connected to the outer ring. For a free-wheel mode, the inner and outer rings are rotatable with respect to each other. For first and second clutch modes, the pawls are displaceable to engage the inner ring to non-rotatably connect the inner and outer rings. For the first mode: rotation of one of the inner or outer rings is in a first circumferential directions and the one of the inner or outer rings is rotatable with respect to the other of the inner or outer ring in a second circumferential direction. For the second mode: rotation of the one of the inner or outer rings is in the second circumferential direction and the one of the inner or outer rings is rotatable with respect to the other of the inner or outer rings in the first circumferential direction.

Abstract: A sprocket module for a bicycle has at least two sprockets fixedly coupled one another. At least one first sprocket of the at least two sprockets comprises engagement portion to a freewheel body of a hub for a bicycle rear wheel. A second sprocket of the module lacks the engagement portion and is supported on the freewheel body through the aforementioned at least one first sprocket. The module allows strong and low-weight sprocket assemblies to be made.

Abstract: A wheel bearing and hub system (WBHS) that functions to facilitate a vehicle wheel hub and tire to rotate with an axle. The WBHS includes a wheel bearing assembly and a wheel hub. The bearing assembly has an outer member with inward extending slots and an inner member that is located and secured within the outer member. The inner member has an outer race, an inner race, a plurality of ball bearings and a retainer within a channel between the hub races, and a center opening. The wheel bearing assembly is inserted into the center of the wheel hub, which has a front member and a rear member. An axle is then inserted into and attached within the channel, thereby facilitating the rotation of the axle and wheel hub.

Abstract: A bicycle rear sprocket assembly is basically provided that includes a first sprocket assembly and a second sprocket assembly. The first sprocket assembly includes at least one first sprocket and a first torque transmitting profile. The second sprocket assembly includes at least one second sprocket and a second torque transmitting profile. The second torque transmitting profile is configured to engage the first torque transmitting profile to transmit torque between the first sprocket assembly and the second sprocket assembly. A threaded portion is provided to one of the first sprocket assembly and the second sprocket assembly. The threaded portion is configured to threadedly engage a bicycle rear hub assembly.

Abstract: A bicycle hub assembly comprises a hub axle, a hub shell, a sprocket support body, a first ratchet member, a second ratchet member, and a sliding member. The hub shell includes at least one first tooth. The sprocket support body includes a first helical spline. The first ratchet member comprises at least one first ratchet tooth and a second helical spline engaged with the first helical spline. The second ratchet member comprises at least one second ratchet tooth and at least one second tooth. The at least one second ratchet tooth is engageable with the at least one first ratchet tooth. The at least one second tooth is engaged with the at least one first tooth. The sliding member is provided between the sprocket support body and the second ratchet member in an axial direction parallel to a rotational axis. The sliding member includes a non-metallic material.

Abstract: The present invention is directed to a torque transmitting bicycle freewheel coasting mechanism comprising a drive body, a driven body and rolling bearing elements supporting and spacing these bodies during coasting. The rolling element bearings are elastically deformable and, during the application of a sufficiently large driving force to the drive body, they deform to allow relative movement between the bodies to bring one body into contact with the other body. This movement is small and the load is carried directly from one body to the other body without damage to the rolling element bearings. The bodies are only highly loaded by drive loads during torque transmission. During coasting, the flexible balls or rollers spring back and support the bodies in a spaced relationship in a normal bearing fashion. The flexible rolling bearing elements are not hard so bearing raceways can be formed directly into the bodies.

Abstract: A first sprocket includes a first opening having a first diameter smaller than a radially outer diameter of a sprocket support portion of a bicycle rear hub assembly. A lock member includes a main body, a male thread portion, and a radial projection. The main body has a first axial end configured to pass through the first opening and a second axial end opposite to the first axial end in an axial direction. The male thread portion is provided to the first axial end and configured to engage with a female thread portion of the bicycle rear hub assembly in a state where a bicycle rear sprocket assembly is mounted to the bicycle rear hub assembly. The radial projection extends radially outwardly from the second axial end to restrict axial displacement of the first sprocket with respect to the sprocket support portion in the state.

Abstract: A multiple-sprocket arrangement for mounting on a rear wheel axle of a bicycle includes a receiving body designed for mounting on the rear wheel axle, and a sprocket assembly. The sprocket assembly includes a first sprocket, the inner diameter of which is greater than an outer diameter of the receiving body and which is connected to the receiving body. The sprocket assembly further includes at least one second sprocket, the inner diameter of which is smaller than an outer diameter of the receiving body and which is designed in an unsupported manner and connected to the receiving body in a torque-transmitting manner by means of the first sprocket. The first sprocket and the at least one second sprocket may be of a one-piece construction.

Abstract: A bicycle hub 1 includes a hollow cylindrical body 3 which is provided with external splines having teeth 5 extending in axial direction. Each tooth has a first axial side 7 which is loaded during use by a sprocket wheel slid onto the body and an opposite, second axial side 9. Three of the teeth are composed of two portions, that is to say a first portion 11 which forms a whole with the body and a second portion which forms an insert 13. The insert partly forms the first side 7 of the tooth. The body is provided with three axial grooves 15 which accommodate the inserts 13. The inserts 13 partly protrude above the grooves and the height 17 of the inserts is approximately equal to the width 19 of the inserts.

Abstract: A bicycle rear sprocket assembly comprises a first sprocket. The first sprocket includes a first sprocket body, a plurality of first sprocket teeth, a bearing unit mounting section, and a first torque-transmitting structure. The plurality of first sprocket teeth extend radially outwardly from a first radially outer periphery of the first sprocket body with respect to a rotational center axis. The bearing unit mounting section is at least partly provided to a first radially inner periphery of the first sprocket body. The first torque-transmitting structure is configured to transmit pedaling torque to a second sprocket separately disposed adjacent to the first sprocket without another sprocket between the first sprocket and the second sprocket. The first torque-transmitting structure is provided to a first bicycle inbound facing surface and is a separate member from the second sprocket.

Abstract: A bicycle sprocket assembly is basically provided with a first sprocket having a first pitch circle diameter, a second sprocket having a second pitch circle diameter, a third sprocket having a third pitch circle diameter, a fourth sprocket having a fourth pitch circle diameter, and a sprocket supporting member. At least one of the second and third sprockets is attached to the sprocket supporting member. The first sprocket is attached to the second sprocket so that the second sprocket is positioned between the first sprocket and the sprocket supporting member in an axial direction. The fourth sprocket is attached to the third sprocket so that the third sprocket is positioned between the sprocket supporting member and the fourth sprocket in the axial direction. The second sprocket is adjacent to the third sprocket without another sprocket positioned therebetween in the axial direction.

Abstract: A driver for mounting a multiple sprocket arrangement to a bicycle rear axle arrangement. The multiple sprocket arrangement includes a sprocket assembly having a plurality of sprockets with different numbers of teeth and an adapter. The rear axle arrangement includes a hub. The driver includes an input torque transmitting profile for transmitting torque from between the sprocket assembly and the driver. A positioning section positions the sprocket assembly in the radial direction. External thread threadably receives the adapter and is disposed between the input torque transmitting profile and the positioning section. An output torque transmitting arrangement transmits torque between the driver and the hub.

Abstract: A planetary gear assembly comprising: a housing, which contains: a planetary carrier, a sun gear, at least one planetary gear, a ring gear, a coil spring; an input shaft; and an output shaft. The coil spring extends around at least a portion of the planetary carrier. The coil spring includes a first tang in communication with the ring gear and a second tang in communication with the housing. When torque is applied to the input shaft, the planetary carrier rotates within the coil spring in one or more driving directions so that torque is transferred to the output shaft. When no torque is applied to the input shaft and torque is applied to the output shaft, the coil spring constricts and provides sufficient contact force to the planetary carrier and housing to prevent the planetary carrier from moving relative to the housing in at least one of the driving directions.

Abstract: A multiple sprocket arrangement mountable to a rear axle arrangement of a bicycle includes a sprocket assembly having a plurality of sprockets with different numbers of teeth. The sprocket assembly includes a splined torque transmitting section. The multiple sprocket arrangement also includes an adapter mountable to the rear axle arrangement. The adapter configured to axially secure the sprocket assembly to the rear axle arrangement with an internally threaded portion disposed along a longitudinal axis outboard of the splined torque transmission section and inboard of at least two sprockets of the plurality of sprockets.

Abstract: A bicycle hub apparatus may include a hub body, a driving ring, a freewheel body, and a ratchet unit. A plurality of driving teeth are sequentially formed around an inner periphery of the driving ring. Since the separated distances between two adjacent driving teeth is smaller, the driving ring comprises more driving teeth, and the number thereof is up to 155 teeth. Also, the ratchet unit comprises a plurality of engaging pieces, and each of the engaging pieces has numerous engaging teeth, and the sizes thereof are corresponding to the driving teeth. As a result, the bicycle hub apparatus in the present invention improves the efficiency of engaging process between the engaging teeth and the driving teeth, and further lowers the possibility of missing step and the risk of use.

Abstract: The present disclosure provides a bicycle hub that provides improved drive line efficiency and bike-to-rider torque feedback. The drive line efficiencies are due to lower rolling resistance resulting from a novel bearing and sprag clutch configuration, a lightweight design, and immediate torque transfer from the cassette drive to the hub body. The bike-to-rider feedback has been improved as the torque transfer is smooth, predictable, and immediate.

Abstract: An assembly of toothed wheels of a bicycle has at least two toothed wheels of different diameter and at least one support member of at least one toothed wheel of the at least two toothed wheels on a component of a bicycle, like for example a free body of a hub for a rear bicycle wheel. The at least one support member is at least partially housed in at least one cavity of at least one other toothed wheel of the at least two toothed wheels. In this way, the distance between the toothed wheels is lower than the thickness of the support member of the toothed wheels themselves. The support member can thus maintain a strong resistant section at the attachment area to the respective toothed wheel. At the same time, it is possible to mount a greater number of sprockets on a free body of standard size.

Abstract: A multiple-sprocket arrangement for mounting on a rear wheel axle of a bicycle includes a receiving body designed for mounting on the rear wheel axle, and a sprocket assembly. The sprocket assembly includes a first sprocket, the inner diameter of which is greater than an outer diameter of the receiving body and which is connected to the receiving body. The sprocket assembly further includes at least one second sprocket, the inner diameter of which is smaller than an outer diameter of the receiving body and which is designed in an unsupported manner and connected to the receiving body in a torque-transmitting manner by means of the first sprocket.

Abstract: A one-way transmission module includes two rings and at least one catch. The first ring is used for connection to a hub. The second ring is used for connection to a flywheel-bearing drum. The catch is arranged between the first and second rings to allow the first ring to rotate the second ring in a first direction but prevent the first ring from rotating the second ring in a second direction opposite to the first direction. The first or second ring includes a non-circular profile while the second or first ring includes a non-circular opening.

Abstract: A bicycle sprocket having a rotational center axis comprises a sprocket body and a chain engagement structure. The sprocket body is rotatable about the rotational center axis. The chain engagement structure includes an upshifting facilitation area configured to facilitate upshifting. The chain engagement structure includes a plurality of chain-engaging teeth configured to engage with a bicycle chain. The plurality of chain-engaging teeth includes at least three upshifting facilitation teeth configured to facilitate upshifting. The at least three upshifting facilitation teeth are adjacent to each other without another tooth between the at least three upshifting facilitation teeth. The at least three upshifting facilitation teeth are provided in the upshifting facilitation area.