Patent ID: 8186774

Claim:
A core for a rubber track which is embedded in a rubber track body in a line comprising: a pair of wing sections; an engagement section adapted to be engaged with a sprocket, the engagement section connecting said wing sections; and a pair of guide projections protruding from an upper surface of the wing sections, the guide projections guiding the core so that the rubber track does not come off of a travelling device, said guide projections having guide projective extending sections, said guide projective extending sections protruding from a lower surface of the wing sections and having first portions protruding forward of the wing sections and the engagement section and second portions protruding rearward of the wing sections and the engagement section, the distance between inner surfaces of the second portions being larger than the distance between outer surfaces of the first portions, the core further comprising tensile force carrying sections protruding from both the inner surfaces of the second portions and the engagement sections, and said first portions having tensile force carrying sections adapted to engage the second portions in a male-female engagement.