Patent ID: 6637291
Filing Date: 2003-10-28
Classification: B62M,Y10T

Abstract:
A bicycle crank structure projecting from a spindle shaft end comprising:a first arm having a hollow cross-section, the first arm having a first crank end connected with respect to the spindle shaft end and a first distal end terminating at a pedal attachment area; a second arm having hollow cross-section, the second arm having a second crank end connected with respect to the spindle shaft end and a second distal end terminating at the pedal attachment area, the second distal end connected with respect to the first distal end to form an angle between the second arm and the first arm; exactly two connection struts, a first connection strut of the two connection struts connecting the first arm to the spindle shaft end and a second connection strut of the two connection struts connecting the second arm to the spindle shaft end, wherein the first connection strut and the second connection strut are radially asymmetric with respect to the spindle shaft end; and an attachment angle between the first connection strut and the second connection strut of less than 180Â° and on a side of the spindle shaft end facing the pedal attachment area.