Asymmetrical or off-center bottom bracket

Details Asymmetrical or off-center bottom bracket Asymmetrical or off-center bottom bracket

B - Operations, Transporting

62

K

B62K 19/30 (2006.01)

Patent

CA 2731425

An asymmetric or off-center bottom bracket assembly suitable for a bicycle frame or other similar wheeled vehicle. According to an embodiment, the bottom bracket assembly comprises a shell or housing having a chain ring section configured for coupling a chain ring and a pedal crank section configured for receiving a pedal crank. Each of the chain ring and the pedal crank sections include a receiver for mounting or seating a bearing. According to an embodiment, the bottom bracket assembly is configured to mount the bearing or end of the chain ring section closer to the chain ring than the bearing or end of the pedal crank section to the pedal crank. According to an embodiment, the pedal crank section is configured with a linear dimension greater than the chain ring section. According to another embodiment, the pedal crank section and the chain ring section have the same linear dimensions and the bottom bracket assembly is mounted asymmetrically or off-center to the center line of the bicycle frame. According to another embodiment, the bearing mounted in the chain ring section is larger than the bearing mounted in the pedal crank section of the bottom bracket assembly.

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