Abstract: A snow tiller for ski slopes having rotating cutter bars with outstanding teeth. The cutter bars are each installed beneath a cover which directs the snow rearwardly to a snow smoothing comb. Each cover is adjustable in geometry to provide either greater or less angle of entry of the snow beneath the snow comb, and the change of angle is coordinated with changes in depth of snow cutting by the cutter bar teeth. A double acting hydraulic cylinder and ram assembly links cutter bar mounting frames, and is used to control the longitudinal angles of the cutter bars upon the snow.

Abstract: A snow tiller for ski slopes having rotating cutter bars with outstanding teeth. The cutter bar is installed beneath a cover which directs the snow rearwardly to a snow smoothing comb. The cover is adjustable in geometry to provide either greater or less angle of entry of the snow beneath the snow comb, and the change of angle is coordinated with changes in depth of snow cutting by the cutter bar teeth.

Abstract: A snow cutting tooth design and an associated cutter assembly design incorporating such teeth, wherein the tooth is constructed with a unitary body of steel plate welded to the outside surface of a tubular cutter bar, with bevelled edges creating acute snow cutting edges, along with a central notch also having bevelled edges and providing additional cutting edges as well as additional paths for churning and chopping the snow. The teeth are angularly joined along a centerline, dividing the tooth into a leading portion and a trailing portion, the leading portion being welded perpendicular to the centerline of the cutter bar. Some of the teeth have the rearward portion angled to the left side of the tilling machine, while others are angled to the left side, so that the snow is not moved to either side of the cutter assembly.

Abstract: An endless belt design for endless track assemblies for use upon off-road vehicles, the belt assembly comprising an elastomeric belt reinforced by embedded fibers, a substantial portion of these fibers being embedded at an angle to the longitudinal direction of the belt especially in the area of the cleat mounting holes, so that the holes are restrained from elongation under shearing load from the mounting bolts by longitudinal components of tension in the biased or angled fabric strands.

Abstract: A cleat assembly for an endless track vehicle, wherein the grouser is retained upon the flexible belt by a clamping assembly which contacts the grouser in a single longitudinal line, substantially eliminating all bending forces in the cleat retaining bolts, so that stresses are maintained below the fatigue limits of the bolt material.

Abstract: A tracked vehicle (10) propelled by a pair of direct current electric motors (35) operating through a power train to a pair of endless tracks (11). Each power train operates a track drive sprocket (14) through a state of the art torque hub. Electric energy is applied to the motors from a battery pack (13) carried by the vehicle, acting in conjunction with a power control and distribution unit which directs the electrical energy from the batteries as needed. Braking of forward motion of the vehicle is accomplished in part by regenerative use of the motors, each as a generator feeding electricity back to the battery pack and consequently braking the vehicle's motion by the resistance of rotation of the armature rotor.

Abstract: A flexible belt assembly for the endless track of an off-road vehicle reinforced by longitudinal cables vulcanized within a rubberlike cover. A grouser clamping plate is similarly vulcanized into the cover, with laterally extending ends to which the grousers are bolted, so that no cleat mounting holes are required through the flexible belt itself, excluding all water and ice from the interior of the belt to increase its longevity. The belt construction is energy efficient in that it is of increased flexibility over previous fabric reinforced belt designs.