LOL
Oops, sorry for wandering off

I'll have to post a vid of the FrankenGE spin-tube.

Scott from Phx made a good one.
It's a BOL Perma-Tuf GE dishwasher that's had all the wash mechanics removed, except for the bottom wash-arm support.
Onto that, we built a vertical spray tower a-la Youngstown Kitchens, and drilled a helix of spray holes.
After reaming the inside of that tube with a piece of KitchenAid metal trim (good stuff, I tell you) to rid it of PVC yiblets that would otherwise recirculate and plug the holes in the filterless GE, we attached metal deflectors at about silverware-basket level. The deflectors are angled so that the tube receives some accelerating "oomph" from them, to help it spin, since controlling the directionality of the spray holes in PVC is kind of tough.
This design worked well, but tended to transfer food particles from the fronts of the dishes to the back in the top rack, so we added a constant rinse made from a screw, nylon nut, nylon washer, and a formed sheet-metal wash arm. This resolved the food crud issue, and made the machine quite functional in terms of washability.
The current sticking-points (aside from a lack of a door, because it was in the way...and thus, no mechanical detergent dispenser) really revolve around crappy racking (a circular design would really help, since everything must face the center) and the fact that the top-bearing for the spray tower (really, just a lag bolt and a flat washer) tends to stick, thus frequently necessitating the gentle nudge at the beginning of the cycle to set the spin-tube a'spinning.
I'm hoping to start work on a new design that incorporates Frigidaire's horizontal spin-tube, as it gives you vastly more flexible racking, but I still need to research a way to get a good, relatively frictionless bearing going for a horizontal tube that still seals well so that the water being funneled into it doesn't just spray out the fitting that connects it.
R&D is on it.
But no, no patents or big surprises here. As Robert noted, the Youngstown Kitchens rates pretty low on washability, and so does the infamous plastic spin-tube...
--Nate