| 摘要 |
A leaf drive assembly (20) designed for use with a platform lift of the type disclosed in U.S. Patent No. 4,058,228. Leaf chains (72, 120, 208) are used in place of roller chains for transmitting rotational drive between spaced sheave (50, 60). Each sheave contains a unique projecting lug (52, 54) designed to engage a correspondingly sized connecting link (122) in the associated leaf chain (120) so as to permit drive to be transmitted between the leaf chain and t he associated sheave.
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