Patents by Inventor Karl Grajkowski

Karl Grajkowski 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).

  • Fuel injection engine having fuel spray deflector
    Patent number: 6170457
    Abstract: An internal combustion engine having fuel injection with a protrusion placed between a fuel injection nozzle and a spark plug in the combustion chamber. The protrusion shields the core nose of the spark plug, but not the gap between the center electrode and ground electrode of the spark plug. In this fashion, combustion is enhanced and carbon buildup on the porcelain body of the spark plug is prevented, thereby lessening the likelihood of a malfunction by the spark plug.
    Type: Grant
    Filed: September 1, 1998
    Date of Patent: January 9, 2001
    Assignee: Outboard Marine Corporation
    Inventor: Karl Grajkowski