Patent ID: 6029353
Filing Date: 2000-02-29
Classification: B62K,Y10T

Abstract:
A method of producing a bicycle frame having an integral segment including a steering support tube portion, a top tube portion, a down tube portion, a pair of seat stay tube portions and a pair of chain stay tube portions, which method comprises:extruding a multi-void tubular configuration as a steering support tube portion, said steering support tube portion including in its multi-void configuration a top tube portion and a down tube portion interconnected by first web portions that in part form an exterior configuration of the steering support tube portion, said top tube portion having a multi-void configuration including a pair of seat stay portions interconnected by second web portions that in part form the exterior configuration of the top tube portion, said down tube portion having a multi-void configuration including a pair of chain stay portions interconnected by third web portions that in part form the exterior configuration of the down tube portions;extending said steering support tube portion to a first determined length and removing the first web portions to define said first determined length and to expose said top tube portion and said down tube portion;extending and forming said top tube portion to a second determined length and extending and forming said down tube portion to a third determined length;removing the second web portions of said top tube portion to define said second determined length and to expose said seat stay tube portions, and extending and forming said seat stay tube portions to a fourth determined length; andremoving the third web portions of said down tube portion to define said third determined length and to expose said chain stay tube portions, and extending and forming said chain stay tube portions to a fourth determined length.