| abstract |
The step conveyor includesnstationary beds for products, movablenthe frame and the traffic lights attached to itnbeds and drives. Part of stationary bedsnit is deployed with a shrinking stepnto the movement of products, beds secondnparts are shifted along the verticalntaking the path of relocation of each transportnbeds intersect the positions of two next to each othernself-contained "stationary beds,nand the beds of the third part are deployed and enlargednwith a step into the movement of products |