Patent ID: 7469976
Filing Date: 2008-12-30
Classification: B62D

Abstract:
1. A rubber crawler comprising: a main body, a plurality of longitudinally spaced metal cores embedded in a width direction of the main body, sprocket engagement holes perforated between the metal cores, two rows of longitudinally spaced tread members disposed on the left and right side of an outer peripheral grounding surface of the rubber crawler, and a plurality of central lugs arranged between the tread members for binding the tread members, the metal cores being embedded respectively in the central lugs, such that the metal cores are partially encircled by the central lugs, wherein a shape of the central lugs viewed from a lateral side of the rubber crawler is approximately in the form of an arc, the arc being projected to have a convexity in a direction of the outer peripheral grounding surface, and wherein at least a portion extending along the arc has a constant radius when measured from a centerline of the respective central lugs.