Hydrogen Energy Systems, LLC located in Akron, Ohio has invented technology that allows an internal combustion engine to run mechanically on 100% compressed hydrogen. Our Hydrogen "Mixing Block"™, (U.S. Patent #9359943), is a device that replaces the carburetor or electronic fuel injector, which delivers the exact mix of hydrogen and air to successfully and efficiently run small internal combustion engines. With our mechanical approach, we have done what no other company has been able to do, which is develop hydrogen engine technology that is affordable to the masses.