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7614972 Bicycle rear derailleur  
A bicycle base member adjustment assembly is provided for a base member of a rear derailleur. The bicycle base member adjustment assembly basically has a base member stopper plate, a biasing force...
7611430 Transmission system for a bicycle, and bicycle incorporating same  
A transmission system includes transmission case having a work opening formed therein and configured to avoid the necessity for enlarging a transmission case, to prevent an increase in weight and...
7585237 Bicycle component with axle fixing structure  
A bicycle component is configured with an axle fixing structure. In the preferred embodiment, the bicycle component is an electric derailleur. The bicycle component has a base member rotatably...
7572199 Mechanism for adjusting spring tension in a derailleur  
A mechanism for adjusting spring tension at a derailleur head mountable to a bicycle frame having a limiting stop, includes an orienting washer rotatably mounted to the bicycle frame and having a...
7563186 Gearshift control device for a chain and sprocket transmission system  
A gearshift control device for a chain and sprocket transmission system including a gearshift member that is movable along a transverse direction relative to the plane defined by the chain, a...
7553247 Electronically servo-assisted bicycle gearshift and related method  
A method for electronically servo-assisting a bicycle gearshift, including the steps of: a) driving an actuator of a bicycle gearshift to displace a chain of the gearshift in an axial direction...
7549662 Bicycle change gear mechanism  
The bicycle gear mechanism, in particular a rear wheel change mechanism, comprises a derailleur provided with a drive chain guide element. The derailleur comprises: an arm ( 2 ); a first attachment...
7547263 Apparatus for adjusting a position of a bicycle control device  
An apparatus for adjusting a position of a bicycle control device comprises a memory that stores a plurality of operating position values corresponding to a plurality of operating positions, a...
7527571 Rear derailleur for bicycle  
The rear bicycle derailleur guides a chain to one of a plurality of rear sprockets. The rear derailleur includes a base member, a linkage assembly, a movable member, a chain guide, a biasing...
7467567 Gear reduction apparatus for a bicycle component  
A gear reduction apparatus for a bicycle component comprises a gear support, a first gear coupled to the gear support for receiving rotational drive force from a drive component, and a second gear...
7442136 Motorized bicycle derailleur assembly  
A motorized bicycle front derailleur assembly is provided that includes a motor unit, a front derailleur and a motor linkage. The motor unit is configured to rotate an output shaft in first and...
7438658 Bicycle front derailleur  
A bicycle front derailleur includes a chain guide that is provided with a pushing element that is movable relative to the chain guide to assist in shifting a bicycle chain from a smaller front...
7396304 Bicycle rear derailleur  
A bicycle rear derailleur is provided that includes a base member, a movable member with a chain guide and a linkage mechanism. The linkage mechanism is coupled between the base member and a...
7361110 Bicycle derailleur  
A bicycle rear derailleur equipped with a base component, a link mechanism, a movable component, outer plate, inner plate, guide pulley, and tension pulley. The base component is mounted on the...
7354362 Rocker arm assembly for the rear derailleur of a bicycle  
Rocker arm assembly for the rear derailleur of a bicycle, comprising an outer plate carrying a pivot pin, an inner plate and a pair of idle transmission wheels arranged between the outer plate and...
7320655 Bicycle derailleur with a misalignment inhibiting structure  
A bicycle derailleur comprises a first base member structured to be detachably mounted to a bicycle frame, wherein the first base member has a first abutment; a second base member structured to be...
7318784 Bicycle derailleur  
An apparatus for achieving the return of a chain to a rear derailleur tension pulley more easily by means of pedaling action when the chain falls off from the tension pulley is provided. The rear...
7255660 Actuator for a bicycle gear-shift  
A bicycle gear-shift actuator having an articulated quadrilateral support with four connecting rods hinged together by four pin elements, and a motor member, having a variable length output shaft...
7244203 Bicycle derailleur  
A bicycle derailleur is provided with a chain guide that basically includes inner and outer guide plates, a guide pulley and a tension pulley. The tension pulley is rotatable about a rotation axis...
7189173 Front derailleur for a bicycle  
The present invention provides a bicycle front derailleur mountable to a seat tube of a bicycle frame for fitting a chain around a selected sprocket of a multiple chainwheel by pushing the chain...
7166048 Bicycle derailleur with protective support  
A bicycle derailleur comprises a bracket adapted to be mounted to the frame; a base member supported by the bracket; a chain guide; and a coupling mechanism coupled between the base member and the...
7137314 Hydraulic gear shift mechanism  
A hydraulic gear shift mechanism for a bicycle having a positioning mechanism for controlling the motion of the piston of a master cylinder assembly is disclosed, wherein the master cylinder...
7125354 Bicycle derailleur with a chain guide disposed at an upper portion of a link mechanism  
A bicycle derailleur comprises a base member structured to be mounted to a bicycle frame; a link mechanism having a first portion and a second portion, wherein the first portion of the link...
7104908 Rear derailleur  
A rear bicycle derailleur includes a base member, a movable member, a guide arm and a tension arm. The base member is adapted to be mounted to a bicycle frame. The movable member is movably coupled...
7059983 Multiple sprocket, multiple function chain guide  
Chain guides for the front sprockets of bicycles are disclosed. More particularly, the chain guides are adapted or configured for bicycles that have multiple (usually 2 or 3) sprockets/chain rings...
7025698 Front derailleur with annular chain guide, bicycle and method of operation  
A front derailleur including an annular chain guide for engagement and disengagement of a bicycle chain with multiple chain rings of a crankset. The annular chain guide may be positioned by linear...
7014584 Top pull type front derailleur  
A top pull type front derailleur is designed to move or shift a chain between two or more sprockets for changing gears. The front derailleur basically has a bicycle frame clamping band, a linkage...
7011590 Shift assist apparatus for a bicycle transmission  
An assisting apparatus for using power from a moving member to assist the operation of a bicycle transmission comprises a power transfer mechanism, a drive coupling mechanism, and a position...
7001294 Method of using a motion sensor with a bicycle sprocket assembly  
A method for shifting a bicycle transmission that includes a derailleur for shifting a chain among a plurality of sprockets. The transmission includes at least a first sprocket and a second...
6997835 Electrically operated derailleur with power storing mechanism  
A rear derailleur for a bicycle includes a base member for attaching the rear derailleur to the bicycle, a movable member for supporting a chain guide, and a linkage mechanism coupling the base...
6988970 Rocker arm assembly for the rear derailleur of a bicycle  
Rocker arm assembly for the rear derailleur of a bicycle, comprising an outer plate ( 12 ) carrying a pivot pin ( 32 ), an inner plate ( 10 ) and a pair of idle transmission wheels ( 14 ) arranged...
6986723 Front bicycle derailleur  
A bicycle derailleur having a derailleur fork. The inner plate of the fork according is made of light alloy, while the outer plate is made of fibre-reinforced synthetic resin. A rear bridge having...
6962544 Front derailleur for a bicycle  
A front derailleur includes a fixed member, a chain guide and a linkage assembly. The fixed member has a mounting portion and a pair of mounting flanges axially spaced from each other. The linkage...
6949040 Bicycle rear derailleur  
A bicycle rear derailleur is basically provided with a base member, a link mechanism, outer and inner plate members, a guide pulley and a tension pulley. At least one of the outer and inner plate...
6945888 Combined analog and digital derailleur position processing apparatus  
A derailleur position processing apparatus includes a derailleur moving member that moves with the derailleur; an analog signal providing mechanism operatively coupled to the derailleur moving...
6837815 Bicycle derailleur for gear changes  
A rear derailleur for bicycle gear changes, comprising a top body or hanger bracket ( 12 ) and a bottom body or pulley-cage bracket ( 14 ) connected together by means of an...
6793598 Rear derailleur device for a bicycle  
A rear dérailleur device is provided, in particular for a bicycle equipped with a front dérailleur and a chain connecting a set of pinions with a set of disks. The rear dérailleur device...
6695729 Chain shifting assembly for bicycles  
A chain shifting assembly for bicycles includes a fixed member fixed to the bicycle frame and an operation member is pivotally connected to the fixed member. The operation member includes first,...
6692389 Automatic derailleur  
An automatic derailleur device comprises an arm, a sprocket roller meshed with one of a set of different-sized sprocket wheels on, a control member, a tension wheel meshed with a sprocket chain and...
6685586 Rocker arm assembly for the rear derailleur of a bicycle  
Rocker arm assembly for the rear derailleur of a bicycle, comprising an outer plate (12) carrying a pivot pin (32), an inner plate (10) and a pair of idle transmission wheels (14) arranged between...
6641495 Front bicycle derailleur fork and derailleur comprising said fork  
Fork ( 4 ) of a bicycle front derailleur comprising an outer plate ( 6 ) and an inner plate ( 5 ), which are two separate elements made of different materials, the inner plate ( 5 ) being stiffer...
6638190 Compact hydraulically-operated derailleur shifting system for bicycles  
A derailleur utilizes a 4-bar linkage, including a housing which acts as one bar of the 4-bar linkage. A hydraulic assembly located within the housing moves the housing relative to the mounting...
6634253 Device and method for compensating for displacement variations between dissimilar gear shifting levers and derailleurs on a bicycle  
A device and method of mechanically synchronizing the displacement requirements of a bicycle derailleur with the displacement created by an indexing gear shifter lever. The device includes a...
6629903 Bicycle derailleur  
A derailleur for a bicycle is provided that is easy to operate. The derailleur basically has a mounting member, a chain guide and a chain guide positioning mechanism. The mounting member is adapted...
6612950 Front derailleur mounting arrangement  
A front derailleur mounting arrangement includes a bottom bracket tube and a front derailleur mounting bracket having first and second complementary mounting structures. The first and second...
6565466 Bicycle derailleur gearshift position indicator  
A bicycle derailleur gearshift position indicator includes a housing holding a gearshift position indication member, the gearshift position indication member having indication plates corresponding...
6517456 Force compensation device for a cable control of a gearshift for a cycle  
A force compensation device is provided in a cable control for at least one chain derailleur secured to a bicycle frame for operating a chain ring or a chain gear. The control cable is secured at a...
6491597 Front speed changing device  
A front speed changing device comprises a base, a first link rod, a second link rod, a chain guiding member, a driven member, and a linking member, which form together a six-link-rod linking...
6482115 Cable connecting apparatus for a bicycle component  
A derailleur apparatus for a bicycle component includes an actuating arm having a fastener opening and a fastener disposed in the fastener opening. The fastener includes a head and a shank...
6454671 Front bicycle derailleur with annular chain guide  
A front bicycle derailleur which utilizes a substantially annular chain guide for engagement and disengagement of the bicycle chain with multiple chain rings of a crankset. The annular chain guide...
Matches 1 - 50 out of 195 1 2 3 4 >