I am not sure how useful this information will be without the picture to back it up, and I can't find anything on the web so you'll have to wait until I can scan the page at work tomorrow. If you have the September issue of Popular Mechanics however flip to page 136 and check out the 3 hammock stand in a "geodesic-dome" design.
It is interesting if you are doing some camping in your back yard with a few friends, but not something that would be considered portable. I would also like to see it in action. The distance between the poles appears to be 10 feet which seems small to me, and the plans would have to be adjusted to make it larger.
From the pictures it appears the hang of the hammocks are hung to close together and the hammock looks more like a hanging chair. Anyway, you'll see it when I get to work!