- Fri Apr 11, 2003 2:31 am #2305
I heard this was patented recently in Germany but not available in the US (yet). I think my 5 year old design is much simpler but, can be even better if the speed sensitive air valves were part of the extruded bump. This 'valve' will probably be the UNIQUE part of this invention that would allow it to become a utility patent. I didn't find one in a patent search at http://www.USPTO.gov/ so, all you mechanical inventor types put your thinking caps on and give this one a shot.