Suspension device for a motorcycle front wheel
AssigneeElf France
InventorDaniel Trema
Life of this patent
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Abstract
Front suspension device comprising a lateral arm, for supporting and steering a front wheel of a motorcycle, wherein the lateral arm is connected at its upper end to a suspension and/or shock absorbing block with telescopic cylinder of which the external movable rod is articulated at its end on an axis orthogonal to the median longitudinal plane of the motorcycle, the arm comprising in the lower part a ball and socket articulation support of which the center of pivoting is located substantially in the alignment of steering axis and cooperates with a connection arm rotationally mounted on an axle of the chassis perpendicular to the median plane of the motorcycle.
Claims8
A front suspension device for a front wheel of a motorcycle, said front wheel mounted on an axle about a rotational axis and said motorcycle having a longitudinal plane and a chassis with a front peak, said front suspension device comprising:
- support arm means for laterally supporting the front wheel and for rotationally steering the front wheel about a steering axis substantially orthogonal to the rotational axis of the front wheel, said steering axis being located substantially centrally in the longitudinal plane of the motorcycle, said support arm means including an upper portion and a C-shaped bent lower portion encasing a portion of the front wheel;
- a telescopic block secured between the upper portion of said support arm means and the front peak, said telescopic block including a suspension spring, a shock absorber and a plate at the upper end of the shock absorber, the suspension spring abutting the plate and the shock absorber having a telescopic cylinder connected with the upper portion of the support arm means and a movable rod substantially in alignment with the steering axis and pivoted at its upper end to the front peak of the chassis such that the upper portion of the support arm means is connected to the front peak by means of the movable rod and the upper end of the suspension spring;
- a lower connecting arm having one end connected to the lower portion of the support arm means by a ball and socket joint having a pivoting center located substantially in alignment with the steering axis and having an opposite end rotatably mounted along an axis of the chassis substantially perpendicular to the median plane of the motorcycle;
- wherein said support arm means is connected to the chassis by a movable suspension linkage comprised of the connecting arm and the telescopic block.
Dependencies are inferred from the claim text.