| 摘要 |
A multi-level storage system comprises a pair of spaced apart parallel tracks (12) defining an endless loop having a number of courses (14) separated by a turn (13), each track (12) guiding a variable length drive chain (11), a plurality of storage cubicles (10) positioned generally between the tracks (12), each cubicle (10) being attached to both drive chains (11), a drive means (21) to drive the cubicles (10) in a desired direction along the endless loop, characterised in that the drive chain (11) lengthens as it passes through the vertical turn (13).
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