Motorcycle

Details Motorcycle Motorcycle

1987-02-17

1989-05-09

Marmor, Charles A.

Motor vehicles

Special wheel base

Having only two wheels

280275, 280277, 280279, B62K 2504

Patent

active

048280690

ABSTRACT:
A motorcycle [1; 50] having a front wheel [23] and a rear wheel [5] includes a motorcycle body [4, 2] including an engine [2], the engine [2] having an engine body [6] and a cylinder [6] disposed on a rear portion of the engine body [6] to define a space [S] forwardly of the cylinder [7] and forwardly and upwardly of the engine body [6]. Upper and lower front swing arms [19, 20] extend horizontally and forwardly from the motorcycle body [4, 2] substantially parallel to each other, the front wheel [23] being operatively supported on front portions of the upper and lower front swing arms [19, 20]. The upper and lower front swing arms [19, 20] have rear portions [19a, 19b, 20a, 20b] pivotally mounted on the motorcycle body [4, 2] for vertical swinging movement with respect thereto. The rear portions [19a, 19b] of the upper front swing arm [19] are pivotally mounted on the motorcycle body [4, 2] within the space [S]. The rear portions [20a, 20b] of at least one of the upper and lower front swing arms [19, 20] are angularly movably mounted on a support shaft [22] extending transversely of the motorcycle, each of the opposite ends of the support shaft [22] being sandwiched between a portion [21] of the motorcycle body [4, 2] having an upper surface [41, 42] and a holder [43] attached to the upper surface [41, 42] of the portion [21].

REFERENCES:
patent: 3521904 (1970-07-01), Sheffer
patent: 3642083 (1972-02-01), Rodler, Jr.
patent: 3971571 (1976-07-01), Yoshioka
patent: 4265329 (1981-05-01), de Cortanze
patent: 4388978 (1983-06-01), Flor
patent: 4526249 (1985-07-01), Parker
patent: 4638881 (1987-01-01), Morioka et al.
patent: 4700799 (1987-10-01), Kawano
patent: 4721179 (1988-01-01), Yamaguchi et al.
patent: 4723620 (1988-02-01), Ono
patent: 4723785 (1988-02-01), Kawaguchi et al.
Apr. 1979 excerpt from Japanese Motor Cyclist magazine.

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