Patent ID: 8366576

Claim:
A toothed chain for a vehicle drive, comprising: cradle pieces running substantially transversely with respect to a longitudinal direction of the toothed chain; a multiplicity of toothed link plates having cradle piece openings; and cover link plates having cradle piece openings, an upper link plate web, a lower link plate web, an opening formed between the upper link plate web and the lower link plate web, and link plate hoops which have the cradle piece openings, the upper link plate web and the lower link plate web connecting the link plate hoops, the cover link plates being articulatedly connected to one another by the cradle pieces, which are arranged in the cradle piece openings of the toothed link plates and the cover link plates, and the cover link plates forming guide link plates, which are situated at an outside, at both sides of the longitudinal direction of the toothed chain with the toothed link plates being held between the guide link plates, wherein the opening of the cover link plates has a shape which is substantially trapezoidal in plan view with sides of substantially equal length in a height direction of the opening of the cover link plates and a top side and an underside of different lengths in a width direction of the opening of the cover link plates with the top side being longer than the bottom side and with the top side assigned to the upper link plate web and the underside assigned to the lower link plate web, and wherein the upper link plate web has a smallest width in the height direction of the opening of the cover link plates and the lower link plate web has a greatest width in the height direction of the opening of the cover link plates, and a ratio of the smallest width in the height direction of the upper link plate and the greatest width in the height direction of the lower link plate has a value in a range of approximately 0.2 to approximately 0.4.