Patent ID: 6299558
Filing Date: 2001-10-09
Classification: F16H

Abstract:
In a drive system having at least two wheels and a chain extending around said wheels having a plurality of links interconnected by transverse pins, at least one of said wheels driving said chain through engagement of said pins and rotation of said at least one wheel, the improvement comprising:a plurality of bogies each having a first hook adapted to receive one of said pins and being pivotally connected to a first one of said wheels, said bogies being positioned such that said hooks receive and carry pre-selected ones of said pins of said chain from engagement positions to release positions during rotation of said first wheel wherein each of said bogies has a second hook, said second hooks each carrying a pre-selected other one of said pins of said chain from engagement positions to release positions during rotation of said first wheel; andan impact absorbing cushion member disposed between each of said bogies and said first wheel, whereby said cushioning member absorbs the impact between said pins and said bogie.