Frame structure for a motorcycle

Details Frame structure for a motorcycle Frame structure for a motorcycle

1994-02-09

1995-01-03

Culbreth, Eric D.

Motor vehicles

Special wheel base

Having only two wheels

2802811, B62K 1906

Patent

active

053777760

ABSTRACT:
An improved motorcycle frame structure is provided to increase the rigidity of a frame of a motorcycle around a pivot plate. A cross pipe is mounted between lower portions of left and right pivot plates, and lower end portions of left and right center pipes are welded to the cross pipe. Another cross pipe is mounted between upper portions of the left and right center pipes. An intermediate portion of the right side center pipe is welded to a position of the inner side of a pivot plate forwardly of the pivot shaft receiver by way of a pipe member while an intermediate portion of the left side center pipe is coupled to a position on the inner side of the other pivot plate forwardly of the pivot shaft receiver by way of a bolt.

REFERENCES:
patent: 4475617 (1984-10-01), Minami et al.
patent: 4577719 (1986-03-01), Nomura et al.
patent: 4744434 (1988-05-01), Miyakoshi et al.
patent: 5012883 (1991-05-01), Hiramatsu

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