SNOW MOBILE SLIDING Russian patent published in 2014 - IPC B62M27/00 B62M29/00 

FIELD: transport.

SUBSTANCE: snow mobile propulsor is composed of three-arm spider driven by chain gearing. Skis are arranged at vertices of said spider to spin about said spider at their attachment to arms. Every ski consists of at least two parts articulated to allow skis displacement in vertical plane at rotation of the main spider. Skis are arranged at vertices of said arms so that distance from ski tip to its mount makes 0.2-0.4, preferably, 0.25 of ski length. Dents are made at ski running surface to make skis run in one direction. At running, main sprocket is driven by chain to allow alternate interaction of ski running surface with bearing snow-coated surface for snow mobile motion and axial motion of ski in snow relative to snow mobile and for removal of ski from snow. Snow mobile rolling is performed at releasing of both skids from contact with bearing surface.

EFFECT: decreased size, better slip.

2 dwg