It wouldn't take a lot of mechanical know-how to take a few of them (maybe two, they look wide enough) and put something inside the hole of the container to accomodate axles that would rig up a little push-cart.

Or maybe one of the q-drums as a front wheel, with two wheelbarrow wheels for the rear ones?

I just wouldn't put anything too heavy in there, considering it's not a real rubber tire. Maybe some food and blankets in there in order to consolidate trips.

Jack and Jill could really fly down that hill, dragging along behind one of those things.

I once rented something similar, with handles, to flatten my back yard prior to planting a new lawn...

You don't have to have a new idea to get a patent. You can patent an improvement on an existing patent. That enlarged hole in the middle could be considered an improvement. All you have to convince is the patent office.

If the older company ever starts making their barrels with a big hole in the middle, royalties or a court case will follow surely.

We have a saying in research, "All you need for a patent is two guys and a dictionary".

-Blast

Does the material used affect the strength and reliability of these containers? Would the Q-drum (LDPE) last as long as the Aquaroll (HDPE)?

Nurit