Chain transmission device
AssigneeTsubakimoto Chain Co.
InventorsShunji Sakura, Akira Hirai
Life of this patent
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Abstract
In a chain transmission, a sprocket having an elastic ring sandwiched between a central hub and an annular toothed outer member, the tooth form is such that the root diameter, that is, the diameter of the tooth gap bottom circle, is greater than the root diameter in a sprocket having a standard ISO tooth form.
Claims1
A chain transmission comprising a sprocket having sprocket teeth separated by tooth gaps having tooth gap bottoms, and a standard roller or bushing chain engaged with the sprocket teeth, wherein the sprocket has a hub, an annular peripheral part on which the sprocket teeth are formed, and an annular elastic member disposed between, and concentric with, the hub and the annular peripheral part, wherein the tooth gap bottoms are tangent to a tooth gap bottom circle concentric with the hub, the elastic member, and the annular peripheral part, and wherein the diameter of the tooth gap bottom circle is larger than the diameter of a tooth gap bottom circle of a standard sprocket designed to be engaged by said standard roller or bushing chain.
Dependencies are inferred from the claim text.