Goldwasher, is the size of the fluidizing tubes, and the diameter and pattern/number of holes in them 'proprietary' info?
Would you be willing to share that info?
no there is no patent and that wasn't part of the patent anyway.
Twelve holes per tube. Six were like 3/16 six were bigger brain fart on actual size.. like 5/16
Bigger holes closer to the output end.
My opinion is that there is a range that will work. It will be hard to get organic creek/river flow to be too much in most situations.
Water through holes in tubes that are not too close to far from the floor of the trap.
It takes a lot of exchange to get gold out of the trap once its in. It's the gangue your trying to keep active and exchanging. The gold takes care of itself.