SNOWMOBILE PROPULSOR Russian patent published in 2014 - IPC B62M27/00 B62B13/08 

FIELD: transport.

SUBSTANCE: propulsor is composed of at least three skis , one central ski located, primarily, at snowmobile frame lengthwise axis centre and two lateral skis, each be arranged on one side of said frame. All said skis can perform in-plane parallel motion in vertical plane at two U-like supports fitted at snowmobile frame. Shafts to run in bearings fitted at the frame are arranged at central part of vertical flanges of every support. Ski seats are arranged at diametrically opposite ends of said supports. Central ski is arranged at central horizontal flange of said support while lateral skis are mounted at horizontal thrusts composed of, mainly, cantilever axles fitted in vertical flanges. Distance from top shoulder flange to axle of supports corresponds to that from horizontal thrust rotational axis to aforesaid axle of supports. Sprockets of chain gearing are fitted on bracket axles, chain gearing gear ratio making the unity. Axle of one of said supports is engaged with chain gearing drive sprocket.

EFFECT: decreased weight, better slip.

2 dwg