Yamaha Hatsudoki Kabushiki Kaisha

Makoto Ichikawa

Eiji Kato

Takashi Imamura

Yoshihiro Morishita

A snowmobile includes a quadrilateral linkage system formed between a vehicle body frame, a front torque arm assembly, a rear torque arm assembly, and an extendable member. The four-node linkage is coupled with at least one slide rail to provide for the vertical distance between the vehicle body frame and the at least one slide rail to vary. The nodes of the four-node linkage are configured to generally define a quadrilateral shape in at least fully contracted and fully expanded configurations.

Snowmobile suspension system

A four wheeled vehicle has a tubular frame assembly, a front body cover detachably connected to the frame assembly, and a front bumper detachably connected to the frame assembly. The front bumper is of tubular construction and has a pair of spaced-apart side members extending through openings in the front body cover. The front body cover is configured so that water flowing across it will be directed downwardly and discharged away from the seat of the vehicle and away from an induction system air inlet that is disposed beneath the seat.

Growing community of inventors

Iwata, Japan

Makoto Ichikawa