Abstract: A non-pneumatic tire is provided that has a hub with a central axis. A supporting structure is located outward from the hub in a radial direction, and a shear band is located outward from the supporting structure in the radial direction. Tread is located outward from the shear band in the radial direction. A static discharge element extends from a first radial end of the supporting structure to a second radial end of the supporting structure. The first radial end is located closer to the central axis than the second radial end in the radial direction. The static discharge element is electrically conductive to conduct electricity through the supporting structure.

Abstract: Some embodiments are directed to a generally planar wheel, including a multi-layer cardboard body having at least one layer of a high-density cardboard sheet sandwiched between at least two layers of low-density cardboard sheet.

Abstract: An idler wheel assembly for a track-type machine includes a circular body, and a sound dampening member. The circular body includes a central hub portion, an annular flange portion integral with the central hub portion, and a circumferential rim portion to define an annular cavity along with the central hub portion and the annular flange portion. The sound dampening member disposed in the annular cavity and a retainer plate positioned adjacent to the sound dampening member.