US Patent 10435092 Track tensioner

A track assembly is formed from a frame, first and second idler wheels, an endless track, and a tensioning assembly. The track is stretched around the wheels. By using the tensioning assembly to increase or decrease the distance between the first and second idler wheels, the tension within the track is adjusted. The tensioning assembly is formed from an outer tube, an inner member having an indicator, and a cage assembly having an opening. The outer tube is supported by the frame and is coupled to the second idler wheel. The inner member is telescopically received within the outer tube and is coupled to the first idler wheel. The opening is alignable with the indicator in response to relative longitudinal movement of the cage assembly and the inner member.