Matches 1 - 50 out of 202 1 2 3 4 5 >
Match Document Document Title
7360470 Bicycle crank and associated methods  
A bicycle crank comprises a mixture of aluminum and chromoly. The spine comprises chromoly, which serves as a backbone to the crank arm and thereby provides added strength. The body comprises...
7334500 Pedal crank having solid coupling  
A pedal crank includes a crank arm having a hole formed in one end to receive one end of a crank shaft which may be rotatably attached to a bicycle frame. An expanding device may be engaged in the...
7267030 Bicycle crank assembly  
A bicycle sprocket crank assembly is comprised of first and second crank arms joined to a spindle. One of the crank arms and the spindle may be fabricated as a unitary structure, or both cranks...
7258041 Bicycle crank assembly  
A bicycle crank assembly has a right crank crimp-fastened to a crank shaft in such a manner that the external appearance is attractive. The crank shaft has a first and second portions with the...
7240586 Auxiliary power unit starting apparatus for an electric bicycle  
The present invention relates to an auxiliary power unit starting apparatus for an electric bicycle, which can convert the rider's pedaling force into mechanical displacement at the time the...
7234373 Bicycle crank axle with a radial projection  
A bicycle crank arm apparatus includes an axle having a first end portion and a second end portion, wherein the first end portion has an outer peripheral surface and a threaded inner peripheral...
7073996 Two-piece crank hanger set for bicycles  
A two-piece crank hanger set including a left crank arm having a tubular crank spindle attached thereto and a right crank arm having at least one chain sprocket wheel attached thereto. The crank...
7007570 Pedal crank mechanism for bicycle  
A bicycle crank mechanism comprises a main crank, a follower crank, and a connecting lever disposed between free ends of the main and follower cranks. A second fixed fulcrum shaft of the follower...
6938516 Bicycle crank axle bolt  
A bicycle crank arm apparatus includes an axle having a first end portion and a second end portion, wherein the first end portion has an outer peripheral surface and a threaded inner peripheral...
6845687 Bicycle crank arm  
A bicycle crank arm apparatus includes an axle having a first end portion and a second end portion, wherein the first end portion has an outer peripheral surface and a threaded inner peripheral...
6840136 Pedal drive mechanism  
A pedal drive mechanism that provides continuous, uninterrupted torque to the drive chain or belt. The continuous torque effect is a result of establishing two separate but connectively joined axes...
6837822 Structure of gear cluster for a bicycle  
An improved structure of a gear cluster for a bicycle having a crankset mounted with a crankshaft provided with a planetary gear module, wherein the planetary gear module includes a big wheel and a...
6796200 Multi speed bicycle transmission including eccentric cranking assembly  
A bicycle transmission has a plurality of cone gears with multiple gear surfaces and a corresponding plurality of ratio-change assemblies for selecting one of the gear surfaces of each cone gear....
6755095 Bicycle crank assembly and assembly tools  
A bicycle crank arm apparatus includes an axle having a first end portion and a second end portion, wherein the first end portion has an outer peripheral surface and a threaded inner peripheral...
6607326 Planetary sphere/ring gear  
A planetary sphere/ring gear, comprising a sphere and a ring, which are interconnected by a ball and a socket. The ball is located on the edge of a circular opening in the ring and the socket is...
6568296 Crank arm quick release device of bicycle  
The crank arm quick release device of a bicycle includes a fixing threaded sleeve screwed on the rotation shaft of the pedal, and a crank arm formed with locking recesses for locking and fixing the...
6543308 Bicycle crank system  
A quick change chain ring arrangement for use on a bicycle crank assembly includes a chain ring adapter that is connected to and rotates with the crank assembly about the crank assembly rotational...
6516685 Power-saving driving device for treading pedals of bicycle  
A power-saving driving device for treading the pedals of a bicycle is disclosed. Thereby, the driver may use a smaller force to tread a bicycle so that a higher efficiency is provided. The...
6487933 Pedal-operated drive unit for bicycles or the like  
The unit comprises two variable-length pedal cranks ( 20 ) having a common rotation pin ( 21 ) of transverse axis (A), and a mechanism ( 34, 35, 36 ) for varying the length of the two pedal cranks...
6443033 Two-piece bicycle crankset  
A crankset for a bicycle in which the crankshaft separates into two pieces. The separation point is approximately midway between the support bearings for the crankshaft, creating two...
6419254 Vehicle with common wheel for steering and propulsion  
Two or three-wheeled vehicle which comprises a frame, a drive system connected to the frame and provided with a motor or a pedal system, and a handlebar mounted pivotally in the frame for at least...
6419252 Traveling and accelerating system for riding a bicycle forward regardless the rotation direction of the pedals  
A traveling and accelerating system for bicycles includes a frame having a front wheel at a front part and a rear wheel at a rear part thereof; a pair of pedals fixed at both sides of a shaft which...
6419251 Propelling scooter  
A propelling scooter includes a chassis, a front wheel steerably attached to a front end of the chassis, a rear wheel rotatably attached to a rear end of the chassis and an elongated pedal disposed...
6415684 Bicycle crank arm parts/assembly and assembly tools  
A crank arm for fitting to a crank fitting to the crank axle includes a crank axle mounting section having a centering structure for centering the crank axle mounting section to an end of a crank...
6398244 Propelling scooter  
A propelling scooter includes a chassis, an upright head tube with a handle, a front wheel, and a rear wheel. An elongated pedal is disposed swingably on the chassis. A horizontal transverse first...
6367352 Crankset without dead center point, and assembly comprising such a crankset and a measuring appliance  
The crankset with no dead center position includes a single crankshaft ( 108 ), fitted with a left crank ( 11 ) and a support hub ( 119 ) provided with a lever ( 20 ). This hub is mounted by a...
6314834 Hollow crank arm  
A hollow bicycle crank arm 10 is fabricated from first and second components 11, 21 that are affixed at a joint 20 that is distal from the crank spindle mounting boss 12. The joint 20 is at least...
6298740 Adjustable rotational transmission assembly  
An adjustable rotational transmission assembly 10 coupled to and provides adjustment of final drive ratio for a driven device 12, such as a bicycle, moped, motorcycle, vehicle, etc. Transmission...
6293884 Cluster sprockets for bicycle transmissions and other prime movers  
This invention comprises a multi-sprocket or cluster gear assembly with a plurality of progressively sized sprockets or gears that are positioned adjacent to each other so as to define an...
6244135 Bicycle drive  
The bicycle drive mechanism is intended to emulate the behavior of contemporary multiple sprocket bicycle drive mechanisms while comprising far fewer components. In operation force is transmitted...
6186017 Multi-speed bicycle transmission  
A multi-speed bicycle transmission having a housing including spaced, opposing face plates, with each face plate having a pedal shaft opening and a secondary shaft opening. A pedal shaft is...
6161452 Pedal crank drive for a bicycle  
A pedal crank drive for a bicycle, comprises a shaft (3) extending through a bearing housing (4), a chain wheel (8) having at least one gear rim (9), where the hub (7) of the chain wheel is...
6155127 Chainless drive mechanism  
A chainless drive mechanism for transferring power from the pedals to the rear wheel of a bicycle. The chainless drive mechanism has a pedal-driven drive mechanism, a rear drive mechanism for...
6145408 Mechanism for feature improvement for bicycles and other crankdriven mechanism  
6142916 Variable rotational exercise system  
An exercise system and method is utilized with a foot pedal of a stationary bicycle to exercise various body parts including the user's legs, arms, chest, shoulders, back, and abdomen for a...
6116114 Rotatable spindle assembly utilizing two-piece spindle  
A light-weight, strong and rigid rotatable spindle assembly utilizing a two-piece spindle suitable for employment in a variety of spindle applications, and in particular in a bicycle crankshaft...
6092821 Vehicle pedal power saving mechanism  
A vehicle pedal power saving mechanism mounted on the axle of the pedal cranks of a vehicle to facilitate pedaling of the pedal cranks, the vehicle pedal power saving mechanism including a side...
6089114 Bicycle transmission with selectable automatic down shifting  
A multi-speed transmission for bicycles, comprising: a housing including spaced, opposing face plates, each face plate having a pedal shaft opening and a secondary shaft opening; a pedal shaft...
6085613 Crankset with no neutral position  
The crankset for the driving of bicycles and other vehicles or machines by muscular force includes two coaxial crank spindles (8, 9), mounted in a bottom bracket tube and each provided with a...
6059171 Bicycle crank and manufacturing method  
A crank arm is formed with an enclosed hollow section, a first solid end fixed to one end of the hollow section and defining a first opening for fitting to a crank axle, and a second solid end...
6024662 Crank arm set  
A bicycle chainwheel plate is formed to reduce the weight of a chainwheel crank and to keep its stiffness at a high level. The chainwheel plate is coupled between a crank arm and at least one...
6003407 Sealing device for motorcycle toe shift mechanism  
A tubular sealing spacer is disclosed which is an improvement on the standard toe shift mechanism for connecting a toe shift lever to the transmission of a motorcycle for shifting gears during...
5988016 Bycycle crank arm  
A bicycle crank arm assembly for a bicycle is designed for mounting a sprocket thereto. The crank arm has a centrally located hub portion, a crank portion extending radially outwardly from the hub...
5983751 Single gear train bicycle drive mechanism  
Apparatus to drive a bicycle wherein two pedals move in a non-fixed, non-180 degree relationship to each other. As the pedal that is being powered by the user moves through an arc less than 180...
5980407 Sprocket and brake disc having a function to prevent a warpage  
A rotary member in the form of a sprocket or a brake disc for transmitting a drive force or brake force, the rotary member having an annular hub portion arranged on a center side, an annular ring...
5979923 Bicycle with an improved crank gearwheel assembly  
A crank gearwheel assembly for use with a bicycle, mainly includes a hollow crank body and a pair of integrated gearwheels of different diameters coupled to the crank body thereby avoiding an...
5971884 Power changing apparatus of bicycle hub  
A power changing apparatus of a bicycle hub is provided. The apparatus including a transmission section at one side of a hub shell of a rear wheel, a bi-directional pedaling apparatus (BDPA)...
5971877 Variable transmission  
A power transmission system used in connection with a vehicle power wheel of a bicycle or other vehicle which has a fixed axle and which utilizes a rotating chain sprocket engaging an endless chain...
5946982 Bicycle crank arm with multiple chain wheels  
A weight-saving crank arm having two spaced-apart connecting members extending between the pedal eye and the hub of the crank arm. The connecting members are preferably arranged at a relatively...
5934155 Pedal crank and bottom bracket bearing axle mounting arrangement  
A pedal crank and bottom bracket bearing axle mounting arrangement in which the bottom bracket bearing axle has a dovetail coupling block at each end; the pedal crank has a dovetail groove at one...
Matches 1 - 50 out of 202 1 2 3 4 5 >