Fluid does not flow unless work is being done. Fluid must flow for work to be done.
That is in my design.
The INNAS design does not have variable displacement in their wheel motor-pumps, so In THEIR design fluid always flows, even when no work is being done, so it should be less efficient.
Here is a pic of my functional (but fixed displacement) prototype running on 120 PSI shop air. You can see how fast it is spinning and my hand gives you an idea of the size.
http://www.youtube.com/user/Ride122609
I had it made from scratch. It normally has a cover that seals off the internals. You can see what it looks like if your freeze the video in the last couple of seconds, or just look at the other video where it spins slowly on the air in a small pancake compressor with the compressor shut off running only on the air reserve.
The details of the stroke adjustment feature are somewhat secret, until I can file provisional applications for any future improvements. If I disclose those future conceptional developments before filing a provisional application then they become a part of the public domain and I can never get them patented. That's the way patent law works, an it limits the extent of my disclosure.
regards
Mech