Patent ID: 7267193

Claim:
A motorcycle frame comprising: a head pipe; a front fork for supporting a front wheel through a shaft, wherein said front fork is rotatable with respect to and supported by said head pipe; and a pair of right and left pipe members connected contiguously at front end portions thereof to said head pipe, the pipe members being curved in an outwardly convex shape with respect to a longitudinal centerline of said motorcycle frame at a longitudinally intermediate position of each pipe member when viewed from a top view, wherein a distance between lower portions at the longitudinally intermediate position of each pipe member is greater than a distance between upper portions at the longitudinally intermediate position of each pipe member, each of the pipe members including an inner wall and an outer wall; the inner wall being formed with a substantially continuous inwardly and downwardly facing concave surface throughout an overall length of each pipe member and with respect to a vertical direction of each pipe member, and the outer wall being formed with a substantially continuous outwardly and upwardly facing convex surface and being substantially parallel with the inner wall, and wherein the inner wall and the outer wall of each of the pipe members join each other at an upper-most edge, the upper-most edge of each of the pipe members being curved in an upward direction when viewed from a side view, and having an outwardly facing convex shape when viewed from a top view.