Patents by Inventor Karl Walter Kuhn

Karl Walter Kuhn 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).

  • Cooled exhaust valve and methods of manufacture thereof
    Patent number: 3945356
    Abstract: Exhaust valve for an internal combustion engine, of the type cooled by fluid circulation and comprising a valve head and a stem screwed into the said head. Said exhaust valve comprises intake and return ducts for the cooling liquid, which are parallel and open into a chamber in the valve head, and which are external relative to one another and substantially symmetrical with respect to the longitudinal axis of the said stem.
    Type: Grant
    Filed: July 2, 1974
    Date of Patent: March 23, 1976
    Assignee: Societe d'Etudes de Machines Thermiques
    Inventor: Karl Walter Kuhn