Double swing arm motorcycle front suspension

Details Double swing arm motorcycle front suspension Double swing arm motorcycle front suspension

1994-10-06

1998-07-21

Hurley, Kevin

Motor vehicles

Special wheel base

Having only two wheels

B62K 2504

Patent

active

057823138

ABSTRACT:
The present invention is adapted to be embodied in a steering and suspension arrangement for the front wheel of a motorcycle. Specifically, the invention relates to a front wheel swing arm type steering and suspension arrangement. In the arrangement of the present invention, upper and lower swing arms connect a motorcycle frame to a steering knuckle which extends along one side of the front wheel. The upper swing arm is shorter in length than the lower swing arm and is pivotally connected to the frame of the motorcycle at a point forwardly of a pivotal connection for the lower swing arm. According to the invention, the swing arms are positioned so that forwards and backwards lateral movement of the suspension system is kept to a minimum and the rake angle of the steering arrangement is held nearly constant during suspension travel, as when the motorcycle encounters a bump during operation. The swing arm suspension arrangement of the invention is compact and allows for good maneuverability of the motorcycle and also for easy access to the engine, as for repairs. A telescoping tube assembly having a pair of elongated tubes reciprocal within associated bores, for absorbing the swing motion of the suspension arrangement, also comprises a portion of the steering arrangement of the invention.

REFERENCES:
patent: 2953395 (1960-09-01), Turner
patent: 4526249 (1985-07-01), Parker
patent: 4627632 (1986-12-01), McKagey
patent: 4727951 (1988-03-01), Morioka et al.
patent: 4756379 (1988-07-01), Kawano et al.
patent: 4756547 (1988-07-01), Trema
patent: 4775025 (1988-10-01), Parker et al.
patent: 4785905 (1988-11-01), Trema
patent: 4813511 (1989-03-01), Yamaguchi et al.
patent: 5044648 (1991-09-01), Knapp

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