Abstract: A snowboard-type ski system and apparatus utilizing two skis and rotary linkage to provide the skier with the natural feel of snowboarding and the response and control of two skis. The system coordinates and maintains parallel alignment, vertical motion, and consistent horizontal separation of the two skis through the use of two linkage cranks which rotate about an axis transverse to the direction of travel intended for the two skis. The linkage includes an elevated mounting assembly positioned between the two skis and above the snow upon which a skier may mount bindings. The points of attachment and rotation are between the skier's feet such that the point of attachment to the two skis is proximate to the ski manufacturer's intended loading point. The transverse rotary motion permits the two skis to cant with respect to one another, as the skier enjoys rough terrain, and maintains' natural motion and transfer of force between the two skis.

Abstract: A snowboard-type ski system and apparatus utilizing two skis and rotary linkage to provide the skier with the natural feel of snowboarding and the response and control of two skis. The system coordinates and maintains parallel alignment, vertical motion, and consistent horizontal separation of the two skis through the use of two linkage cranks which rotate about an axis transverse to the direction of travel intended for the two skis. The linkage includes an elevated mounting assembly positioned between the two skis and above the snow upon which a skier may mount bindings. The points of attachment and rotation are between the skier's feet such that the point of attachment to the two skis is proximate to the ski manufacturer's intended loading point. The transverse rotary motion permits the two skis to cant with respect to one another, as the skier enjoys rough terrain, and maintains' natural motion and transfer of force between the two skis.

Abstract: Ski apparatus with two outer skis and a third ski, located between the two outer skis, coupled to the outer skis by four cranks, connected as a front pair and a rear pair. Each crank has a gear on one end and a free end. The free end of a crank is attached to a journal box on an outer ski to permit the crank to rotate freely. The gear of the crank from one outer ski meshes with the gear of a crank attached to the other outer ski, coupling the cranks in pairs and causing the cranks to rotate in opposite directions. The gears from each pair are contained in a gearbox attached to the third or middle ski. In one embodiment, the journal box may be slidably attached to the ski, to permit the ski to move forward and backward relative to the journal box, thereby permitting the user to alternately advance and retreat the skis relative to each other.

Abstract: Ski apparatus two outer skis coupled to a third ski, located between the two outer skis, by four cranks, connected as a front pair and a rear pair. Each crank has a gear on one end and a free end. The free end of a crank is attached to a journal box on an outer ski to permit the crank to rotate freely. The gear of the crank from one outer ski meshes with the gear of a crank attached to the other outer ski, coupling the cranks in pairs and causing the cranks to rotate in opposite directions. The gears from each pair are contained in a gearbox attached to the third or middle ski. The cranks can be stiff or resilient and, if resilient, includes an elbow joint which is spring biased to force the middle ski below the outer skis.