A composite bicycle crank with an integral spindle attachment structure provides a unique method for attaching a bicycle crank arm to a bicycle crank spindle, and also for attaching a bicycle crank arm to a crank arm insert. A light-weight crank arm is able to be manufactured separately from the crank spindle or insert, and then securely attached after both pieces have been made. This allows for the pieces of the crank assembly to be manufactured from one or more different materials, and securely connected after manufacturing, to create a lower weight assembly than would be possible otherwise.
BICYCLE CRANK WITH SPINDLE ATTACHMENT STRUCTURE
FAHRRADKURBEL MIT SPINDELBEFESTIGUNGSSTRUKTUR
MANIVELLE DE BICYCLETTE AVEC STRUCTURE DE FIXATION D'AXE DE PÉDALIER
2024-08-28
Patent
Electronic Resource
English
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer / G05G CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY , Steuer- oder Regelvorrichtungen oder Steuer- oder Regelsysteme gekennzeichnet ausschließlich durch mechanische Einzelheiten |
CRANK ATTACHMENT/DETACHMENT STRUCTURE FOR BICYCLE AND BICYCLE INCLUDING THE SAME
European Patent Office | 2021
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