Chain, has tooth type rollers, where each roller has combining portion drivingly connected to adjacent link plates, and projecting portion protruded from combining portion towards chain wheel and engaged with tooth space of chain wheel

摘要

The chain (4) has a set of horizontally spaced links (41), where each link is comprised of two horizontally spaced link plates (411). Another set of links (42) is overlapped with a portion of the former set of links, and is positioned between the link plates. Tooth type rollers (5) are positioned between the horizontally spaced link plates of the links. Each roller has a combining portion (51) drivingly connected to the adjacent link plates, and a projecting portion (52) is protruded from the combining portion towards a chain wheel and engaged with a tooth space of the chain wheel.