A bicycle crank assembly is provided with a first sprocket (14), a second sprocket (16), a crank arm (12), a sprocket fixing structure (70) and an alignment tube (76). The first sprocket (12) includes a plurality of first teeth (36) and at least one first mounting portion having a first mounting opening (40). The second sprocket (16) includes a plurality of second teeth (42) and at least one second mounting portion having a second mounting opening (46). The crank arm (12) includes at least one sprocket attachment portion having a third mounting opening (60). The sprocket fixing structure (70) secures the first and second sprockets (14, 16) to the crank arm (12) via the first, second and third mounting openings (40, 46, 60). The alignment tube (76) extends through at least two of the first, second and third mounting openings (40, 46, 60).
BICYCLE CRANK ASSEMBLY
FAHRRADKURBELANORDNUNG
ENSEMBLE DE MANIVELLE DE BICYCLETTE
2019-09-11
Patent
Electronic Resource
English
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |