The chips are moved from bed to bed by a combination of gravity and pneumatic conveyance.  The chips from the bottom of the bed are sheared by a flow of dryer gas and thrown upward at the end of each bed to the top of the next bed  A movable deflector above these chips can be used to  direct the chips forward to the next bed or to be recycled back to the same bed.  This control may be useful for start-up and shut-down or even for normal operation.

An early design used a riser configuration at the end of each bed to throw the chips upward with considerable force with a peumatic-conveyance mechanism.  This is the “invention” claimed by NAU  in our disputed invention.  There are many other, and likely better ways to perform this function.