Class / Patent application number | Description | Number of patent applications / Date published |
192064000 | Velocipede free wheel | 27 |
20080230344 | Bicycle Multi-Gear Cassette - A bicycle multi-gear cassette mountable to a wheel hub driver mechanism that includes truncated conical shell having a first opening proximate a small shell base and a second opening proximate a large shell base. The openings are coaxial with an axis of the shell. A plurality of toothed sprockets having different numbers of teeth are disposed on the shell and extend radially of the central axis. A torque load transmitting profile is configured on the shell proximate one of the small and large shell bases. A radial load transmitting profile is configured on the shell proximate one of the small and large shell bases. The shell, sprockets, and the load transmitting profiles embody a single piece. The torque load transmitting profile forms a featureless contact surface for frictional engagement with the hub driver mechanism. | 09-25-2008 |
20080264748 | Hub assembly for a bicycle - A hub assembly for a bicycle includes a hub shell rotatably mounted on a hub axle, a plurality of pawls disposed respectively in retreat bores in the hub shell to be moved between driven and idle positions, a chainring carrier rotatably mounted on the hub axle, a surrounding drive member coupled with the chainring carrier and having an annular ratchet segment to be coupled with the pawls so as to form a uni-directional mechanism, and an annular barrier member that confronts an annular insertion opening in the hub shell, and a shielding member including a rim which is water-tightly engaged with the insertion opening, and an annular flexible web body which has a tubular tail portion that is kept in frictional contact with a protrusion of the annular barrier member. | 10-30-2008 |
20080289927 | BICYCLE SPROCKET ASSEMBLY WITH CHAIN PROTECTOR - A bicycle sprocket assembly includes a sprocket element and a chain protector. The sprocket element has a plurality of teeth disposed on an outer periphery about a center rotation axis and at least one first attachment element. The chain protector includes a protecting portion and an attachment portion disposed radially inwardly of the protecting portion. The attachment portion has at least one second attachment element that mates with the first attachment element in response to relative rotational movement between the sprocket element and the chain protector. | 11-27-2008 |
20090255774 | RATCHET GEAR DEVICE FOR A BICYCLE REAR WHEEL - A ratchet gear device is applied for a bicycle rear wheel having a wheel axle and a hub mounted on the wheel axle, and the ratchet gear device has a freewheel, a collar, a ratchet ring and at least one permanent magnet. The freewheel is mounted around the wheel axle and has multiple wedging teeth. The collar is magnetic, is mounted securely in the hub and has multiple engaging teeth. The ratchet ring is mounted in the collar and has multiple engaging slots and multiple ratchet teeth. The engaging slots engage the engaging teeth in the collar. The ratchet teeth engage the wedging teeth on the freewheel. The at least one permanent magnet is attached to the ratchet ring to provide a magnetic force to move the ratchet ring to an engaging position where the ratchet teeth engages the wedging teeth on the freewheel. | 10-15-2009 |
20090277741 | HUB AND AXLE ASSEMBLY FOR A BICYCLE - A hub and axle assembly includes a hub surrounding an axle. An inner surrounding surface of the hub has larger and smaller mounting segments defining therein first and second annular spaces, respectively. A tubular drive member includes a chainring carriage segment spaced apart from the axle by a first bearing mounting groove, a positioning segment which is insertable into the first annular space and which is spaced apart from the larger diameter segment by a second bearing mounting groove, and a pawl mounting segment insertable into the second annular space. A uni-directional mechanism is disposed between the pawl mounting segment and the smaller-mounting segment. First and second rolling-element bearing units are disposed in the first and second bearing mounting grooves, respectively, to stabilize rotation of the chainring carriage segment and the hub relative to the axle. | 11-12-2009 |
20100044180 | HUB ASSEMBLY FOR A BICYCLE - A hub assembly for a bicycle includes a hub shell adapted to be rotatably mounted on a hub axle and having angularly displaced retreat bores for receiving pawls, respectively. An annular drive member is rotatably mounted on the hub axle and is rotated with a flywheel mounting cylinder. A circumferential surface of the drive member has a plurality of cavities confronting the retreat bores. Each cavity has first and second engaging walls which are mirror images of each other such that, when the drive member is rotated in one of clockwise and counterclockwise directions, coupling ends of the pawls are respectively engaged with the first or second engaging walls to drive rotation of the hub shell, and such that, when the drive member is rotated in the other one of the clockwise and counterclockwise directions, the coupling ends are disengaged from the first or second engaging walls to be placed in an idle position. | 02-25-2010 |
20100122886 | Bicycle Hub That Will Not Drive the Pedal and Will Not Produce Noise When The Hub is Rotated in the Backward Direction - A hub for a bicycle includes a shaft, a hub body, a ratchet wheel, a damper, a drive seat, a plurality of pawl members, and a plurality of elastic plates. The ratchet wheel has a plurality of oneway ratchet teeth. The drive seat has a support base which has a plurality of receiving slots. Each of the pawl members has a locking detent. Thus, when the pedal is driven backward (and the drive seat is rotated backward), each of the pawl members is fully hidden in the respective receiving slot, and the locking detent of each of the pawl members is detached from the oneway ratchet teeth constantly, so that each of the pawl members will not touch the ratchet wheel when the pedal is driven backward to prevent from incurring a noise. | 05-20-2010 |
20100252389 | High Efficiency Bicycle Hub - A high efficiency bicycle hub for near frictionless free wheeling comprising a hub having a toothed engagement ring, a driver having a retractable engagement member that can engage and disengage from the hub, and a retraction device to facilitate a disengaged configuration. The retraction device comprises a retaining ring having retraction members and the retractable engagement member comprises reciprocal retraction members to “catch” the retraction member to maintain a disengaged configuration. In use, forward rotation of the driver engages the retractable engagement member with the toothed engagement ring of the hub to drive the hub. Reverse rotation of the driver rotates the reciprocal retraction members underneath or behind the retraction member thereby disengaging the driver from the hub. | 10-07-2010 |
20110073430 | Bicycle hub having pawl retaining function - A bicycle hub having pawl retaining function comprises a hub body including a ratchet face disposed on one end thereof to fit a ratchet barrel, the ratchet barrel including a positioning holder mounted on one end thereof relative to the ratchet face, the positioning holder including a number of receiving cavities to receive pawl members, and between the receiving cavities being arranged a number of engaging slots on raised rims thereof, each pawl member including a retaining groove fixed thereon relative to the engaging slot so that the pawl members are positioned in the receiving cavities by using a binding member and one end of each pawl member extends flexibly, characterized in that: the binding member is a closed spring member so that as the pawl members are bound and retained to the positioning holder, the pawl members swing independently from each other by ways of the binding member. | 03-31-2011 |
20110094846 | BICYCLE HUB - A bicycle hub comprises: a housing, a driving base in the housing, and an engaging unit for the driving base to drive the housing in a single direction. The engaging unit consists of several claws and elastic elements surrounding thereon. Each of the elastic elements is an arc hook and urges against the corresponding claw. The claws thus enable the driving base to drive the housing. | 04-28-2011 |
20110168513 | FREEWHEEL STRUCTURE - A freewheel structure includes a freewheel. The freewheel has a teethed portion formed on an outer periphery thereof for adapting to engage with a bicycle chain. The freewheel has a pivotal hole centrally defined therein and extending therethrough for adapting to receive a spindle. The freewheel has a position portion disposed on an inner end of the pivotal hole for adapting to connect with a bicycle hub. The position portion of the freewheel is single-directionally and ratchetably rotated relative to the hub. | 07-14-2011 |
20110168514 | RATCHET HUB DEVICE - A ratchet hub device, which can be quickly meshed to drive a bicycle, includes a hub shell, a ratchet cylinder, and an axle. There are plural tooth sockets and two groups of receiving notches between the hub shell and the ratchet cylinder. The receiving notches of each of the two groups are arranged with an equal interval between each other. Each of the receiving notches of the one group is arranged next to one of the receiving notches of the other group. Two groups of receiving notches receive ratchet members therein and engage with the tooth sockets by turns. Thereby, when a rider re-pedals a bicycle, one group of the ratchet members engage with the near tooth sockets so as to quickly engage with the hub shell and drive the hub shell to rotate. | 07-14-2011 |
20110214961 | Bicycle Hub Assembly with Quickly Switching Function - A hub assembly includes a shaft, a hub mounted on the shaft and having a plurality of locking grooves, a driven ring mounted in the hub and having a plurality of oneway ratchet teeth, a drive seat rotatably mounted on the shaft, a drive ring mounted on the drive seat and received in the driven ring, a plurality of pawl members mounted on the drive ring and meshing with the oneway ratchet teeth, a freewheel secured on the drive seat, and a control ring slidably mounted on the drive seat and having a plurality of locking blocks releasably locked in the locking grooves. Thus, a user only needs to move the control ring to switch the operation modes of the bicycle between a normal riding and an acrobatic performance so that the user can change the two operation modes easily and quickly. | 09-08-2011 |
20110220449 | BICYCLE HUB ASSEMBLY WITH TWO BEARINGS - A bicycle hub assembly includes a hub having a driving tube connected one end thereof and the driving tube includes a ratchet portion and a sprocket portion respectively defined in an outer periphery thereof. A first recess and a second recess are defined in an inner periphery of the driving tube, wherein the first recess is located corresponding to the ratchet portion and the second recess is located corresponding to the sprocket portion. A ratchet unit is mounted to the ratchet portion and a sprocket unit is mounted to the sprocket portion. A first rotary member and a second rotary member are engaged with the first recess and the second recess respectively. | 09-15-2011 |
20110220450 | HUB RATCHET DRIVING DEVICE FOR BICYCLES - A hub ratchet driving assembly includes a hub and a driving member is connected to an end of the hub. The driving member includes a driving portion which has first and second recesses defined in an outer surface thereof so as to receive a pawl and a spring member therein. A teeth ring is connected to the hub and includes multiple teeth in an inner periphery thereof. The spring member biases the pawl so as to provide a return force to the pawl. The pawl includes two ratchet teeth which are engaged with the teeth of the teeth ring. A positioning unit has a first positioning slot defined in the driving portion and a second positioning slot is defined in the pawl. A positioning ring is mounted to the first and second slots so as to prevent the pawl from disengaging from the driving portion in axial direction. | 09-15-2011 |
20120285785 | RATCHET MECHANISM FOR BICYCLE HUB - A ratchet mechanism of a bicycle hub includes a ring fixed in the hub. The ring has a tapered surface and a flange is formed in the inner periphery of the ring. A driving unit is located in the hub and has multiple first ratchet teeth extending axially therefrom. A passive unit is located in the tapered surface and corresponding to the driving unit. The passive unit has a passive seat which has a tapered outer face matched with the tapered surface. The passive seat further has a stop portion which is stopped by the flange in one direction. The passive seat has multiple second ratchet teeth engaged with the first ratchet teeth. A magnetic unit is located between the hub and the passive set, and two magnetic members which are magnetically repulsive to each other so as to linearly move the passive seat toward the driving portion. | 11-15-2012 |
20130043102 | High Efficiency Bicycle Hub - A high efficiency bicycle hub for near frictionless free wheeling comprising a hub having a toothed engagement ring, a driver having a retractable engagement member that can engage and disengage from the hub, and a retraction device to facilitate a disengaged configuration. The retraction device comprises a retaining ring having retraction members and the retractable engagement member comprises reciprocal retraction members to “catch” the retraction member to maintain a disengaged configuration. In use, forward rotation of the driver engages the retractable engagement member with the toothed engagement ring of the hub to drive the hub. Reverse rotation of the driver rotates the reciprocal retraction members underneath or behind the retraction member thereby disengaging the driver from the hub. | 02-21-2013 |
20130092495 | HUB ASSEMBLY WITH THE RATCHET MEMBER MOVABLE IN TWO DIRECTIONS - A hub assembly includes a ratchet mechanism located between the hub and the tubular portion on one end of the hub, and including a driving member which is located in the tubular portion and is movable linearly. One side of the driving member has a cone-shaped first ratchet portion located axially and is composed of two triangular contact surfaces. A passive member is movable in the first slot and one side of the passive member has a cone-shaped second ratchet portion which is engaged with the first ratchet portion. A returning member unit is located between the hub and the passive member, and between the tubular portion and the driving member. By the triangular cone-shaped first and second ratchet portions, the contact area and the friction between the ratchet portions are reduced, and the engagement and disengagement is more quick and smooth. | 04-18-2013 |
20130092496 | HUB ASSEMBLY WITH RATCHET MEMBER MOVABLE IN ONE DIRECTION - A ratchet mechanism of a hub assembly is located between the hub and the tubular portion, and includes a driving member which is movable linearly in the tubular portion. One side of the driving member has a cone-shaped first ratchet portion located axially and is composed of two triangular contact surfaces. A passive member is fixed in the hub and has a cone-shaped second ratchet portion which is engaged with the first ratchet portion. A returning member is located between the hub and the driving member. The passive member is fixed to the hub easily. By the triangular cone-shaped first and second ratchet portions, the contact are and the friction between the ratchet portions are reduced, and the engagement and disengagement is more quick and smooth. | 04-18-2013 |
20130126292 | RATCHET HUB - A ratchet hub using a magnetic force for restoration as disclosed has a freewheel unit and a ratchet ring thereof forming a unidirectional ratchet mechanism and a magnetic assembly using a magnetically repulsive force to normally make the freewheel unit and ratchet ring engage mutually and allow force transmission therebetween. Once a force disengaging the freewheel unit from the ratchet ring surpasses the magnetically repulsive force, the ratchet ring is pushed away from the freewheel unit. When the force disengaging the freewheel unit from the ratchet ring disappears, the magnetically repulsive force automatically and promptly returns the ratchet ring to engage with the freewheel unit again. | 05-23-2013 |
20130126293 | RATCHET CYLINDER FOR A BICYCLE HUB - A ratchet cylinder for a bicycle hub is provided with a cylinder member, a plurality of ratchet teeth, a plurality of springs and a C-ring. The C-ring circles around the connecting end of the cylinder member and engages in the grooves of the respective ratchet teeth, so as to retain the ratchet teeth in the receiving grooves and allow the ratchet teeth to pivot within a limited angle. The springs are disposed between the ratchet teeth and the ratchet cylinder to keep pushing the respective ratchet teeth of the hub shell into an engagement position with the teeth of the hub shell, so that the ratchet teeth can be surely engaged with the teeth. | 05-23-2013 |
20130233667 | REINFORCEMENT STRUCTURE FOR BEARINGS IN BICYCLE HUB - A reinforcement structure for bearings of a bicycle hub assembly includes a hub and an axle extends through the hub. A connection portion is defined in one end of the hub. A ratchet sleeve has a transmission portion located on one end thereof and a bearing is located in the transmission portion. Multiple slots are defined in outside of the transmission portion and the axle extends through the ratchet sleeve. A ratchet unit having multiple ratchet teeth and a ratchet ring which is connected to the connection portion. The ratchet teeth are engaged with the slots. The ratchet ring has multiple ratchet slots defined in the inner periphery thereof and the ratchet teeth are engaged with the ratchet slots. A positioning unit has a positioning member located on one side of the bearing so as to prevent the bearing from shifting axially. | 09-12-2013 |
20130299295 | Hub and its Ratchet Wheel - A hub includes an arbor shaft, a ratchet wheel, an internally-toothed ring, a shell, a clutch member and a second spring. The ratchet wheel includes at least one chain wheel, a plurality of concavities, a plurality of pawls and a plurality of first springs. The chain wheel and the concavities are disposed on two opposite sides of the ratchet wheel respectively. Each pawl has a first end and a second end. Each spring has a first end and a second end. The internally-toothed ring surrounds the pawls and has an inner periphery formed with a plurality of inner teeth. The clutch member has an axial hole and a cam. The present invention is advantageous in the way that the pawls and the internally-toothed ring do not make “kada-kada” rattle noise nor drive the pedals during idle running of the hub. | 11-14-2013 |
20140060992 | HUB FOR AT LEAST PARTIALLY MUSCLE-POWERED VEHICLES - A hub for at least partially muscle-powered vehicles having a hub axle, a hub body, a rotatable driving device, and a freewheel device. The freewheel device includes a first and a second engagement component cooperating with one another having at least one axial toothing each. The freewheel device is biased to the engaging position via a magnetic biasing device. A first magnetic device biases the first engagement component and a second magnetic device biases the second engagement component to the engaging position. At least one magnetic component comprises a carrier unit and a multitude of magnetic units disposed thereat. | 03-06-2014 |
20140326568 | Freewheel Hub Comprising a Magneto-Elastic Sensor and Bicycle, Pedelec, fast Pedelec or E-bike Comprising the Freewheel Hub - A freewheel hub and a bicycle, pedelec, fast pedelec or e-bike comprising this freewheel hub is provided. The freewheel hub comprises a rotating hub shell for carrying a free running wheel. Torque is coupled to the rotating hub shell via a torque transmitting member. At least one magneto-elastically active region is directly or indirectly attached to or forms a part of the torque transmitting member in such a manner that the applied torque is transmitted to the active region comprising at least one magnetically polarized region. The magnetic polarization becomes increasingly helically shaped as the applied torque increases. A magneto-elastic sensor means having at least one magnetic field sensor is arranged proximate to the at least one magneto-elastically active region for outputting a signal corresponding to a torque-induced magnetic flux emanating from the magnetically polarized region. | 11-06-2014 |
20150352898 | BICYCLE FREECOASTER HUB - A bicycle freecoaster hub includes a clutch to provide a clutching effect during riding. The clutch has a clutch member, and first and second resistance members. The first resistance member is located inside the clutch member and includes a cylinder and flanges at each end. The second resistance member includes a ring sleeve part located inside the clutch member and mounted on the cylinder of the first resistance member and abutted against the first flange of the first resistance member. An elastic member is sleeved onto the cylinder of the first resistance member and abutted between the outer flange of the first resistance member and the second resistance member, so as to provide sufficient resistance for the clutch member. The hub bearings are arranged in such a way that the drive mechanism is isolated from axial loads. | 12-10-2015 |
20170232791 | BICYCLE HUB ASSEMBLY | 08-17-2017 |