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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...
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7350796 |
Crank apparatus for bicycles and the like
A crank apparatus includes a driven member rotatably mounted to a machine, and a crank arm attached at an inner end thereof to the driven member at a rotational axis of the driven member such that...
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RE40127 |
Human-powered driving mechanism
A human powered drive units each including a pair of a rotatable member having a sprocket and a supporting member having a sprocket, which are arranged up and down, and including a chain extended...
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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...
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7284631 |
Drive unit able to be applied to a vehicle provided with pedals
A drive unit able to be applied to a vehicle with pedals, like a bicycle, a tricycle or other, having at least a flywheel and a pair of pedals connected to a central shaft rotatable around a...
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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...
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7263914 |
High performance bicycle crank
A carbon fiber bicycle crank includes an axle lug, having a portion for receiving a crank axle. A foam core is coupled to the axle lug during a first molding process. A pedal engaging lug is...
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7258040 |
Hollow crank arm for a bicycle and process for manufacturing the same
A hollow crank arm for a bicycle comprising a body of elongated shape, at the ends of which are formed, respectively, an area for connection of the bottom bracket spindle and an area for connection...
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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...
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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...
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7181823 |
Method for manufacturing integrated bicycle crank arm and spider assembly and the crank arm and spider assembly made thereby
A method for manufacturing a crank arm and spider assembly includes the following steps: (1) providing a blank; (2) shaping the blank to form a crank billet comprising an elongate body having a...
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7152501 |
Bicycle crank fixing structure
A bicycle crank fixing structure is arranged to fix a left crank with a mounting bore and a slit extending radially from the mounting bore to a crank axle. The mounting bore is non-rotatably...
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7080574 |
Crank structure for bicycle pedal
A crank structure for a bicycle pedal. A front outer thread of a cylindrical sleeve has a same rotary direction as an inner thread hole of the crank, and the rear outer thread has the opposite...
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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...
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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...
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7000499 |
Bicycle crank and method for manufacturing said crank
Bicycle crank comprising an elongated core with a first and a second end, a first and a second insert arranged on the ends of the core, and a high-resistance fiber coating incorporated in a plastic...
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6988427 |
Seal assembly for a bicycle bottom bracket
A seal assembly includes a support, an outer seal extending circumferentially around a radially outer surface of the support, and an inner seal extending circumferentially around a radially inner...
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6983672 |
Bicycle crank axle bearing assembly
A bottom bracket assembly for a bicycle is comprised of a spindle and at least two cartridge bearings. The inner races of the cartridge bearings are axially fixed on the spindle by abutting stop...
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6968754 |
Space maximizing means for keeping or storing bicycles
A crank arm ( 1 ) is provided that is connected to the crank head ( 2 ) through an elastic rotation axis ( 6 ) and a lock axis ( 7 ) having a reduced diameter (D) in the middle of said lock axis (...
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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...
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6925907 |
Triangulated bicycle pedal support structure
A bicycle with a triangulated crank structure replaces the single span crank arm which connects the spindle to the foot pedal on bicycles today. The triangulated crank structure is typically...
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6899402 |
Combination of crank and axle in bottom bracket
A crank includes a through hole defined in a first end thereof for receiving one of two ends of an axle in the bottom bracket, and a threaded hole defined in a second end of the crank so as to be...
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6874387 |
Quick release bicycle pedal mounting connector
A quick release bicycle pedal mounting structure including a solid interchange plug connector connected to a crank and a female threaded manual connect coupling connected to a bicycle pedal. The...
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6865969 |
Adjustable pedal for exercise devices
A pedal structure for exercise devices includes a pedal having a groove for receiving an operation rod therein and two positioning ports are defined in a side of the pedal. The positioning ports...
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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...
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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...
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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...
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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...
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6699161 |
Adjustable pedal drive mechanism
An adjustable pedal drive mechanism for bicycles and exercise machines includes a pedal arm attachment plate assembly on each side of the cycle or machine frame. Each plate assembly provides...
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6640662 |
Variable length crank arm assembly
A variable length crank arm assembly ( 10 ) is disclosed which is mounted to a bicycle ( 11 ). The crank arm assembly ( 10 ) has a pair of oppositely disposed crank arms ( 25 ) each having a boss (...
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6637292 |
Foldable bicycle pedal crank
A foldable bicycle pedal crank, comprising a crank, a crank endpiece, a lock, and a pedal. The crank has a connecting yoke, passed through by a first crank hole and second crank holes which aim...
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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...
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6589139 |
Exercise and rehabilitation equipment
A cycle (or an adaptation for a cycle) comprises a primary crank arranged for rotation about a first axis, a secondary crank, and connection means for selective connection of the secondary crank to...
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6581494 |
Bicycle riding trainer
Embodiments of a bicycle riding training system are disclosed. The system includes a crank assembly that is removable from the bicycle without disruption of the sprocket and chain. The invented...
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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...
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6564675 |
Crank arm for bicycles
A crank arm for bicycles includes two end pieces and a hollow tube connected between the two end pieces. Each of the two end pieces has an engaging hole defined therethrough and an insertion which...
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6550355 |
Bicycle crankshaft assembly
A bicycle crankshaft assembly in accordance with the present invention comprises a frame tube having first and second end portions and defining a passage extending between the end portions. The...
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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...
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6513408 |
Bicycle pedal
A pedal for a bicycle is formed by a pedal frame ( 3 ) which is rotatably held on a pedal shaft ( 1 ) and is swivelable to a limited extent on a support ( 4 ) about an axis ( 5 ) transversal to the...
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6508146 |
Pedal driving mechanism of bicycle
A pedal driving mechanism for a bicycle which contains structurally improved pedal arms on which pedals are installed to increase the rotary radius of the pedals during the running of the bicycle...
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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...
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6487932 |
Elastic bicycle crank apparatus
A bicycle crank assembly comprises pedals, crank arms, an axle and a chainring assembly. The pedals, crank arms, and axle are coupled to the chainring assembly through an elastic element in the...
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6463828 |
Expansion engagement crank assembly
An expansion engagement crank assembly for a bicycle. The assembly includes a female crank arm, a male crank arm, and a connector for connecting the female arm and the male arm. The female arm has...
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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...
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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...
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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...
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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...
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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...
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6341946 |
Continuously adjustable telescopic pedal crank length
A apparatus for gearless shifting, includes at least one crank, and an arm assembly, coupled to the at least one crank, for telescoping to adjust a length of the at least one crank, to selectively...
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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...
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