Patent attributes
A bicycle comprising a longitudinally extending frame, a front wheel disposed at the front of the frame, a rear wheel disposed at the rear thereof, and first and second auxiliary supporting devices disposed on each side of the rear wheel, each of the auxiliary supporting devices including an arm that has one end pivoted to the frame and the other end vertically movable as a free end and that can rotate independently of each other, an auxiliary wheel for assisting traveling of the bicycle pivotally supported parallel with the rear wheel, a spring for energizing the arm in a rotating direction such that the auxiliary wheel moves downward, and a disc rotor which can be locked to restrict the rotation of the arm to thereby fix the vertical movement of the auxiliary wheel when stopping at a red light.
