Abstract: A vehicle drawn snow tiller for loosening, cutting, grinding, packing and leveling a wide path of snow for improved, more enjoyable skiing. The tiller comprises an elongate rotary snow cutter assembly with radially projecting snow cutting blades distributed over the length and about the circumference of a cutter tube directly powered by reversible hydraulic motors, one mounted upon each of its ends. The snow is cut, selectably, in or away from the direction of travel of the tiller over the snow. An elongate apron disposed over the cutter assembly collects and directs the loose cut snow onto the surface behind the cutter assembly, where it is compacted by the apron and finally leveled and smoothed by a horizontal grooming bar on the trailing edge of the apron. According to one aspect of the invention, an elongate snow splitting baffle may be disposed above the cutter to deflect a portion of the cut snow forward to fall again into the path of the reversely rotating cutter for additional cutting and grinding.

Abstract: A variable wing plow blade and mounting structure for attaching the plow blade to a tractor, snow grooming vehicle, and the like feature distribution of the load on the blade over a relatively wide area of the supporting structural members thereby to permit reduction in their size, weight and number and in their manufacturing and assembling costs while maintaining the essential structural strength, and are further characterized in the attainment of improved performance and utility in respect of independence of the plow blade height and pitch or roll, tilt and wing blade adjustments, and greater freedom of movement of the wing blades of the plow blade, both forwardly and rearwardly, from a position of alignment with the center section of the plow blade.

Abstract: An endless crawler track for a tracked vehicle, having particular utility in applications where snow to be traversed by the vehicle is hard or icy, includes low disturbance track cleats that are spaced three to five inches apart and are bolted crosswise to the belting of the track. The cleats are characterized by having a generally triangular oval cross section so that as the belting travels upward from the rear wheel around the drive sprocket at the rear of the vehicle, each cleat emerges from the imprint made in the snow without chunking and flinging of snow. The track features a novel ice calk attached to every third or fourth track cleat for preventing sideways sliding of the vehicle on ice.

Abstract: For a track laying vehicle, a convertible chassis comprising endless track driving sprocket wheels and track guide bogie wheel assemblies, both mountable upon the vehicle to accommodate wide or narrow endless tracks selectably, the sprocket wheels being reversibly mountable upon the sprocket drive shafts of the vehicle using flanges axially offset from the track engaging teeth of the sprocket wheel, and the bogie assemblies being mountable at selectable locations upon elongated cross-members secured to the frame of the vehicle.

Abstract: A variable wing plow blade and mounting structure for attaching the plow blade to a tractor, snow grooming vehicle, and the like feature distribution of the load on the blade over a relatively wide area of the supporting structural members thereby to permit reduction in their size, weight and number and in their manufacturing and assembling costs while maintaining the essential structural strength, and are further characterized in the attainment of improved performance and utility in respect of independence of the plow blade height and pitch or roll, tilt and wing blade adjustments, and greater freedom of movement of the wing blades of the plow blade, both forwardly and rearwardly, from a position of alignment with the center section of the plow blade.

Abstract: An endless crawler track for a tracked vehicle, having particular utility in applications where snow to be traversed by the vehicle is hard or icy, includes low disturbance track cleats that are spaced three to five inches apart and are bolted crosswise to the belting of the track. The cleats are characterized by having a generally triangular oval cross section so that as the belting travels upward fron the rear wheel around the drive sprocket at the rear of the vehicle, each cleat emerges from the imprint made in the snow without chunking and flinging of snow. The track features a novel ice calk attached to every third or fourth track cleat for preventing sideways sliding of the vehicle on ice.