US Patent 9284947, RESPONSIVE WINDMILL, windtrees, wind tree, vertical axis windmill, VAWT, future windmill, wind mill, wind turbine Inventions, Rotary machine, RESPONSIVE VAWT windmill, …


US Patent 9638186 issue date 20170502, Rotary pump and rotary motorA breakthrough progress towards a simpler, less costly and more efficient engine.
This is not fiction about Wankel's design nor Mazda's pursue. 
James Watt's 230 years old dream becomes true.
Technical problems such as friction and dynamic sealing etc. have been solved finally in a simple and effective way with every reason and potential to outperform piston-crankshaft engines.

A Rotary Machine as Air Motor or Air Pump
Rotary air compressor with innovative air-tank
An innovated compressed air reservoir for energy storage, safe and lighter
Air Brake assistance
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