Vehicle body frame of motorcycle
AssigneeYamaha Motor Co., Ltd.
InventorMasao Kawase
Life of this patent
Estimating the term…
Abstract
A motorcycle has a frame assembly in which the main frame is separable into a left side and a right side. Each side of the main frame includes a portion of a steering head pipe and one or more engine mounts. The engine joins rearward portions of the left and right sides of the main frame.
Claims15
A motorcycle comprising a frame assembly, said frame assembly comprising a left main frame and a right main frame, said left and right main frames each comprising a portion of a steering head pipe, each of said left and right main frames extending rearward and downward from said portion of said steering head pipe, a left rear arm bracket extending downward from a left main frame and a right rear arm bracket extending downward from said right main frame, said steering head pipe being split into a left portion and a right portion such that said left main frame integrally comprises said left portion of said steering head pipe and said left rear arm bracket and said right main frame integrally comprises said right portion of said steering head pipe and said right rear arm bracket, said left and right portions of said steering head pipe being removably secured together to pivotally support a steering shaft, and an engine being directly connected to said left and right main frames.
A motorcycle comprising a body frame, said body frame comprising a left main frame and a right main frame, said left and right main frames being separable at a steering head pipe and extending rearwardly and downwardly from said steering head pipe, a left rear arm bracket and a right rear arm bracket extending downwardly from corresponding rear ends of said left and right main frames, said steering head pipe being split into a left steering head pipe portion and a right steering head pipe portion, said left and right steering head pipe portions being removably secured together and together pivotally supporting a steering shaft, a left split frame being defined by said left steering head pipe portion, said left main frame and said left rear arm bracket combined into a single integrated component, a right split frame being defined by said right steering head pipe portion, said right main frame and said right rear arm bracket combined into a single integrated component, a left engine mounting bracket and a right engine mounting bracket being positioned between said left and right main frames, said left engine mounting bracket being integrally formed with said left split frame and said right engine mounting bracket being integrally formed with said right split frame and an engine being coupled to said left and right engine mounting brackets.
Dependencies are inferred from the claim text.