Patent ID: 6659897
Filing Date: 2003-12-09
Classification: A63G,B65G

Abstract:
A chain drive assembly for elevating a load, the assembly comprisingan endless loop lift chain having a plurality of lift chain links, and a plurality of drive members, the lift chain links comprising a pair of laterally spaced outer link members pivotally connected to at least one inner link member disposed at least in part between the outer link members, at least one of the inner and outer link members of each lift chain link having a plurality of tooth formations for engagement with the drive members, the drive members each comprising an endless loop drive chain having a plurality of drive chain links which define clearances into which the tooth formations of the lift chain are received and being disposed so as to engage the tooth formations at a rectilinear portion of the lift chain so as to drive the lift chain in a longitudinal direction, the inner and outer link members being arranged to define an opening designed to receive a projection on said load.