| 摘要 |
A drive chain-sprocket combination comprising a chain constructed of alternate single toed or toothed links and links, similar to British Standard roller chain links, joined by pivot means meshing with sprockets formed of outer members and a central spacer of a second and lesser diameter having cavities matching the toes of the toed links. The outer members extend radially beyond the central spacer and provide rims which act as guides to maintain chain-sprocket engagement.
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