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US 7,263,914 B2Granted
High performance bicycle crank
AssigneeCompositech, Inc.
InventorsAndrew Ording, Aaron Barker
Life of this patent
Estimating the term…
Abstract
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 coupled to the foam core after the completion of the first molding process, and a carbon fiber composite material exoskeleton is coupled to and disposed exteriorly of the axle lug, foam core and pedal lug.
Claims11
A carbon fiber bicycle crank arm comprising
- (a) an axle lug including a portion for receiving a crank axle, wherein the axle lug includes a spider portion, the spider portion comprising at least one radially extending endoskeletal arm having a distal end capable of being coupled to a chain ring, the radially extending arm including an aperture
- (b) a foam core coupled to the axle lug during a first molding process
- (c) a pedal engaging lug coupled to the foam core after the completion of the first molding process;
- and
- (d) a carbon fiber composite material exoskeleton coupled to and disposed exteriorly of at least a portion of the axle lug, radially extending endoskeletal arm, foam core and pedal lug,
- wherein the foam core includes a portion disposed within the aperture of the radially extending arm.
3 more elements
A carbon fiber bicycle crank arm comprising
- (a) an axle lug including a portion for receiving a crank axle, the axle lug includes a spider portion comprising at least one radially extending arm,
- (b) a foam core coupled to the axle lug during a first molding process the foam core engages a portion of the radially extending arm
- (c) a pedal engaging lug coupled to the foam core after the completion of the first molding process;
- and
- (d) a carbon fiber composite material exoskeleton coupled to and disposed exteriorly of axle lug, foam core, radially extending arm and pedal lug,
- wherein the radially extending arm includes a slotted aperture extending along at least one half of the length of the radially extending arm, and the foam core includes a portion disposed within the slotted aperture.
3 more elements
Dependencies are inferred from the claim text.