초록 ▼

An improved snow vehicle track suspension employing a force-distributing mechanism comprising a swingarm, a three-arm bell crank, a connecting linkage, and a telescoping limiter linkage. The force-distributing mechanism apportions cushioning force from a shock absorber to track carriage components t

An improved snow vehicle track suspension employing a force-distributing mechanism comprising a swingarm, a three-arm bell crank, a connecting linkage, and a telescoping limiter linkage. The force-distributing mechanism apportions cushioning force from a shock absorber to track carriage components that bear upon a lower run of an endless-loop track to establish a desired weighting distribution of the track upon the surface of the snow. The force-distributing mechanism allows the track carriage to incline and decline within a limited angular range to enable the track to maintain tractional compliance with the surface of the snow.

대표청구항 ▼

[ What is claimed is:] [1.]1. A snow vehicle comprising a chassis, a ski, an endless-loop track, and a track suspension for cushioned support of the snow vehicle chassis upon a lower run of the endless-loop track, the track suspension comprising:a track carriage configured to moveably bear upon an i

[ What is claimed is:] [1.]1. A snow vehicle comprising a chassis, a ski, an endless-loop track, and a track suspension for cushioned support of the snow vehicle chassis upon a lower run of the endless-loop track, the track suspension comprising:a track carriage configured to moveably bear upon an interior surface of the lower run of the endless-loop track;a swingarm having a front and a rear, the rear of the swingarm pivotally attached to the track carriage at a first location and the front of the swingarm pivotally attached to the snow vehicle chassis;a bell crank having a fulcrum and first, second and third arms, the fulcrum pivotally attached to the swingarm;a cushion having a first end pivotally attached to the first arm of the bell crank and a second end pivotally attached to the snow vehicle chassis;a first link pivotally connected between the second arm of the bell crank and the track carriage, the first link pivotally connected to the track carriage at a second location displaced from the first location; anda second link having a first end pivotally attached to the third arm of the bell crank and a second end pivotally connecting to the snow vehicle chassis.