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US20130225340 UNIVERSAL SKIP-FREE DERAILLEUR  
A front derailleur with controllable full rotational movement with two operator selectable radial arms—one for pole-vaulting the chain to larger sprockets, the other for sliding the chain to...
US20070207886 LOW PROFILE REAR DERAILLEUR WITH CABLE GUIDE  
A bicycle rear derailleur comprises a base member; a movable member that supports a chain guide including a first pulley that rotates around a first pulley axis, wherein the pulley has a pulley...
US20070219029 Fluid dampening chain tensioning device  
In one embodiment, a chain tensioning system is provided which maintains tension on a chain and permits slow changes in chain tension while dampening sudden changes. An exemplary embodiment may...
US20060258494 Front Derailleur With Variable Attachment to a Bicycle Frame  
A front derailleur that includes a variable attachment to a mounting socket of a bicycle frame. The front derailleur includes a base member, a chain cage, a parallelogram and an attachment member....
US20140265219 In Line Derailleur  
The present invention is a derailleur comprising: a base plate disposed between the perimeter of a drive sprocket nest and a pedal sprocket; a chain guide attached to said base plate for moving a...
US20060019782 Front derailleur and chain guide  
A front derailleur including a chain guide for engagement and disengagement of a bicycle chain with multiple chain rings of a crankset is disclosed. The chain guide may be positioned by linear...
US20060240920 Chain tension applying device  
There is provided a chain tension applying device for a bicycle that can accommodate a change in an axial distance between a frame and a sprocket. A chain tensioner 40 is a device for applying...
US20080146390 Constant torque variable speed drive train  
A drive train system for human powered vehicles whereby the pedals move in a linear or slightly curved path, providing a superior ergonomic ride. Power is transmitted from the pedals by a flexible...
US20140155207 KEY PULLEY SEGMENT FEATURES, SEGMENT STACK CONFIGURATION, AND CAM AND ROLLER DESIGN AND ACTUATION IN A SYNCHRONIZED SEGMENTALLY INTERCHANGING PULLEY TRANSMISSION SYSTEM  
A key pulley segment in a synchronized, segmentally interchanging pulley transmission system is either first or last in a pulley segment set to engage an endless member. The first or last key...
US20140265220 Low Profile Derailleur For Chain Driven Personal Vehicle  
The present invention is a low profile derailleur for a chain driven personal vehicle with an attachment plate, a frame, a positioning angle included in said attachment plate, a transition rail...
US20140121047 ELECTRIC DERAILLEUR MOTOR UNIT AND MOTORIZED DERAILLEUR  
An electric derailleur motor unit includes a base member, a motor, an output shaft, and a drive train. The motor is mounted to the base member. The motor has a motor shaft rotatable about a first...
US20100075788 SIX LINK FRONT DERAILLEUR  
A front derailleur for shifting a bicycle chain between chain rings of a bicycle crank set. The front derailleur may include an attachment mechanism for securing the derailleur to a bicycle frame...
US20070202978 LOW PROFILE REAR DERAILLEUR  
A bicycle rear derailleur comprises a base member, a movable member, a linking member coupled between the base member and the movable member so that the movable member moves laterally relative to...
US20110230287 CHAIN LATERAL TRAVEL LIMITER  
A lateral travel limiter for the chain of a chain drive assembly as commonly seen on multi-speed bicycles. The chain lateral travel limiter attached to a bicycle frame proximate to a front...
US20080167148 Bicycle front derailleur  
A bicycle front derailleur includes a fixed member, a movable member, a chain guide and a linking member. The fixed member is coupled to a bicycle frame. The movable member is movably coupled to...
US20050288139 Front derailleur for bicycle  
A front derailleur basically comprises a base member, a chain guide, inner and outer links, a first arm portion, and a coil spring. The chain guide is freely swingably coupled to the base member...
US20110028252 UNIVERSAL SKIP-FREE DERAILLEUR  
The invention is a universal front and rear derailleur configured to work with a variable mechanical transmission of the chain and sprocket type. A hollow axle is mounted adjacent to the...
US20090111624 FRONT SPEED CHANGE DEVICE  
A front speed change device comprises a base, a first linking rod, a second linking rod and a chain guide unit. The body serves to fix the body to a seat tube. The first linking rod has one end...
US20080026889 Speed change device of a bicycle  
A speed change device of a bicycle comprises a body having a ring clamping portion and a driven portion; the driven portion being connected to a chain driving sheet; an L shape driven arm pivoted...
US20060030440 Bicycle chain guide assembly allowing use of multiple chainrings for indirect chain drives of suspension bicycles  
A lower chain guide assembly to allow the use of multiple chainrings and front derailleur systems on indirect-drive chain driven bicycles.
US20100081527 Bicycle Derailleur  
A derailleur is configured to be mounted to a bicycle frame. The derailleur includes a clamp mountable to the bicycle frame. The clamp includes a first end having a threaded portion receiving a...
US20050272541 Chain guide for the front derailleur of a bicycle  
A chain guide for the front derailleur of a bicycle has a first plate intended to shift a chain from a first toothed crown with a diameter to a second toothed crown with a larger diameter, a...
US20070060427 Front derailleur chain detachment prevention member  
A front derailleur chain detachment prevention member is provided that can be easily removed from a front derailleur. The front derailleur chain detachment prevention member is removably mounted...
US20070207885 Electronic derailleur control system  
An electronic derailleur control system is provided with a derailleur, a gear shift controller and a storage device. The gear shift controller operates the derailleur to shift from a first...
US20080032835 Multiple Sprocket Chain Guide For Front Bicycle Derailleur  
A multiple sprocket chain guide includes a guide structure mounted onto the movable metal cage of a conventional front bicycle derailleur such that the entire guide structure moves between inner...
US20140274507 SINGLE PIVOT FRONT DERAILLEUR  
Embodiments of a front derailleur gear shifting system including various unique chain guides attached to and operating from a single pivot point. This derailleur system provides a simple, yet,...
US20120071284 Bicycle Gear Mechanism  
A bicycle gear assembly comprises first and second sets of cog wheels, each having at least three cog wheels of various sizes including a largest cog wheel and a smallest cog wheel. These two sets...
US20070129191 Chain Guide for a Front Derailleur  
A chain guide for a front derailleur includes inner and outer guide plates. The outer guide plate includes an interior surface having a guide surface that protrudes toward the chain. During the...
US20090111625 BICYCLE GEARSHIFT  
The disclosed bicycle gearshift (20) includes a support member (22) configured for mounting on a bicycle frame, a driving member (24) for driving of a bicycle chain, and at least one articulation...
US20060240919 Bicycle transmission  
To improve the operating performance of a chain. A bicycle transmission includes an alignment guide located between a drive sprocket and a transmission sprocket cluster for aligning a stagnant...
US20070197324 Auxiliary bicycle shifting component  
A front derailleur is provided with an auxiliary bicycle shifting component to minimize reduction in downshifting performance when a chain is located on a chain-entry side of a chain guide. The...
US20050266945 Actuator device and relative nut for a bicycle gearshift, with an elastically yielding member  
An actuator device for a bicycle gearshift is provided. The actuator comprises an actuation mechanism, driven by a drive member and in turn to drives a derailleur of the gearshift. The mechanism...
US20070021247 Pivotal Connection Of A Bicycle Derailleur  
A stable and play-free pivot connection of a bicycle derailleur between a parallelogram link and either a base member or a chain cage. The pivot points are formed with first and second bushings...
US20090204299 METHOD FOR ELECTRONICALLY CONTROLLING A BICYCLE GEARSHIFT AND ELECTRONIC SYSTEM FOR A BICYCLE  
A method for electronically controlling a bicycle gearshift and a bicycle electronic system perform gearshifting. To perform this gearshifting, a displacement of an actuator from a current...
US20080274845 FRONT DERAILLEUR FOR A BICYCLE  
A derailleur including an articulated quadrilateral mechanism, having four parallel articulation axes is provided. At a first articulation axis, between a fixed member and a first connecting rod,...
US20080300076 BICYCLE FRONT DERAILLEUR ASSEMBLY  
A manually operated bicycle front derailleur assembly includes a linkage assembly, a lever member and a connecting link. The linkage assembly is supported to a fixing member and includes an inner...
US20140349793 FRONT DERAILLEUR  
A front derailleur is basically provided with abuse member, a chain guide, a link mechanism and a cable guiding structure. The base member is fixedly coupled to a bicycle. The chain guide is...
US20070123379 Bicycle front derailleur with angle adjustment  
A bicycle front derailleur includes a base member, a movable member, and a chain guide with an angle adjustable plate member. The base member is configured to be coupled to a portion of a bicycle....
US20060148602 Transmission for bicycle  
A transmission for a bicycle for re-installing a chain in the lateral direction of the bicycle in a front chain wheel having two or more sheets of gear plates, comprising two sheets of guards,...
US20070238563 Bicycle Gear Mechanism  
A derailleur (10) is predisposed to translate a drive change (11) between at least two gears (12) rotating about a rotation axis (y). The derailleur (10) is mobile in one direction in rotation...
US20100022335 CHAIN GUIDER OF A FRONT DERAILLEUR  
A chain guider of a front derailleur includes an inner plate having an inverted L-shaped connecting structure integrally extending therefrom and an outer plate mounted on the connecting structure....
US20050176537 Structure of transmission for bicycle  
To achieve downsizing and weight reduction of a derailleur shaft and the mounting structure thereof and to improve the rigidity of the derailleur shaft without increasing the thickness thereof...
US20070037645 BICYCLE DERAILLEUR APPARATUS WITH A SUPPORTED POWER SUPPLY  
A bicycle derailleur apparatus comprises a derailleur including a mounting member adapted to be mounted to a bicycle frame and a chain guide coupled to the mounting member so that the chain guide...
US20100004079 BICYCLE REAR DERAILLEUR  
A bicycle component (e.g., a rear derailleur) is basically provided with a base member and an axle. The axle includes a base supporting part supporting the base member for pivoting about a center...
US20130252772 DERAILLEUR  
The present invention is a derailleur for moving a chain to a different sized sprocket in a drive sprocket nest comprising: a feed arm for directing onto one of multiple sprockets within the drive...
US20070135249 Top/bottom pull bicycle front derailleur  
A top/bottom pull front derailleur includes a base member, inner and outer links, a chain guide and a top/low adjustment mechanism coupled to the base member. The links are pivotally coupled...
US20090054183 BICYCLE REAR DERAILLEUR WITH A MOTION RESISTING STRUCTURE  
A bicycle derailleur comprises a base member adapted to be mounted to a bicycle, a movable member movably coupled to the base member, and a chain guide coupled to the movable member. The chain...
US20060223660 Speed changer with pre-determined gears, particularly for cycles  
A speed changer is used to control derailleurs using cables from a single rotating handle, the deraileurs being connected respectively to an elastic return element. The speed changer includes at...
US20060172831 Holding device for a rear derailleur of a bicycle  
A holding device has a holding base, a connecting element and a holding bolt. The connecting element is attached to the holding base and has a threaded hole defined through the connecting element....
US20090124440 Gear changing mechanism for chain drive  
A gear changing mechanism is adapted to engage an endless chain in a chain drive. The mechanism includes a rotary shaft and a gear set located around the shaft. The gear set has a plurality of...

Matches 1 - 50 out of 138 1 2 3 >