DEVICE FOR MOVING OVER SNOW Russian patent published in 2000 - IPC

FIELD: devices for moving over snow, mainly skis. SUBSTANCE: device has main and two additional skids different in sizes, joint connecting skids and lock. Additional skids are located on sides of main skid, opposite to each other and symmetrical to longitudinal axis. Joint is made in form of axle having threaded ends with lock washer and nut put on threaded ends, and with two recesses and bearings with bodies secured to skids. Lock consists of two lock strips with screw for fastening to fork embracing bearing body of main skid. Bearing bodies are displaced to nose part from middle of skids. Two recesses in which lock strips are installed are made on surface of axle symmetrical to middle, and distance from each other equals A+B+2C, where A is distance between recesses; B is width of fork; C is thickness of lock strip. Put on axle open surface is corrugated cover. EFFECT: low cost, simple in manufacture, servicing, repair and adjustment. 4 dwg