Patents by Inventor Herbert H. Heitland

Herbert H. Heitland has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process and device for a two-stroke combustion-engine
    Patent number: 5505172
    Abstract: A method and apparatus of a two-stroke combustion engine is provided. The invention relates to utilizing the compression of the flue gases that remain in the cylinder, and the intake of a combustible air-fuel mixture in a limited zone of the combustion chamber, where the mixing of the air-fuel mixture and the flue gas is minimized. The combustible air-fuel mixture is ignited into the limited zone of the combustion chamber.
    Type: Grant
    Filed: February 23, 1994
    Date of Patent: April 9, 1996
    Inventors: Herbert H. Heitland, Krzysztof Wislocki