A bicycle crankset includes a chainring (10), a spider (40), and a crankarm (30). The chainring (10) has a disk member (12) and a plurality of teeth (14) on an edge of the disk member (12) to engage a chain (20). The spider (40) is connected to the disk member (12) of the chainring (10), and has a connecting bore (44) and a plurality of recesses (46) on an edge of the connecting bore (44). The crankarm (30) has a plurality of protrusions (32) to engage the recesses (46) of the spider (40). The connecting bore (44) is eccentric relative to the chainring (10), and the crankarm (30) is able to be connected to the chainring (10) in different angles by engaging the protrusions (32) of the crankarm (30) with different of the recesses (46) of the spider (40) to provide various paths of motion of the chainring
BICYCLE CRANKSET WITH ECCENTRIC CHAINRING AND ADJUSTABLE CRANKARM
FAHRRADKURBELSATZ MIT EXZENTRISCHEM KETTENBLATT UND VERSTELLBAREM KURBELARM
PÉDALIER DE BICYCLETTE AVEC PLATEAU EXCENTRIQUE ET BRAS DE PÉDALIER RÉGLABLE
2019-08-14
Patent
Electronic Resource
English
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |
BICYCLE CRANKSET WITH ECCENTRIC CHAINRING AND ADJUSTABLE CRANKARM
European Patent Office | 2018
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