AGRICULTURAL SELF PROPELLED MACHINE CATERPILLAR DRIVE Russian patent published in 1998 - IPC

FIELD: agricultural engineering; tractors. SUBSTANCE: driving sprockets and idler wheels of caterpillar drive are connected by flexible tracks. Teeth made on driving sprocket are arranged between inclined flanges of rim, teeth roots being arranged with clearance relative to rim base. Holes are made in inclined flanges of rim in zone of teeth and between the teeth. When teeth installed at inner side of track belts get into tooth spaces of rim, mud stuck on rim is forced out. EFFECT: enhanced engagement of track belt with driving sprocket. 3 cl, 1 dwg