Urban bike

Details Urban bike Urban bike

B - Operations, Transporting

62

K

B62K 3/10 (2006.01) B62K 19/00 (2006.01)

Patent

CA 2639046

An urban bike is disclosed. The bike comprises a U-shaped main frame bearing on its front ending a head member with adjustably mounted handlebar, and a front fork unit accustomed to a front wheel. The U-shaped main frame on its rear ending is firmly connected to a mast tube carrying a seat unit. The U- shaped main frame and the mast tube are defining together a Y-shaped chief structure; a low ending of this structure is firmly connected to a rear structure and to a crank section adopted a pedal unit. The rear structure is accustomed to a rear wheel. At least one hold up plate goes from the crank section to a front part of the U-shaped main frame and joins this front part on its down side as to give gradual stress distribution by a rigid triangle development and to increase the Y- shaped chief structure's strength and durability.

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