Patents by Inventor Simon Andrea

Simon Andrea 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).

  • Exhaust valve for a reciprocating internal combustion engine
    Patent number: 4147149
    Abstract: The exhaust valve is provided with an air gap which extends axially of a sleeve-like member to which the hot exhaust gases from the combustion chamber passes. The air gap serves to impede heat exchange between the coolant which cools the valve seat surface of the sleeve-like member and the hot gases passing over the inner surface of the sleeve-like member.
    Type: Grant
    Filed: May 16, 1977
    Date of Patent: April 3, 1979
    Assignee: Sulzer Brothers Limited
    Inventor: Simon Andrea