Patents by Inventor Fritz J. Knapp

Fritz J. Knapp 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).

  • Air cleaner and snorkel assembly
    Patent number: 5195484
    Abstract: An engine air intake system comprises a primary inlet tube or snorkel with an opening that provides air to the air cleaner, and a secondary inlet opening located downstream from the primary inlet opening. The primary inlet tube also has a low point, with a drain to eliminate any of the water. If the primary inlet tube becomes partially or completely blocked with water, the secondary inlet tube will provide the necessary air to the engine until the water is eliminated through the drain.
    Type: Grant
    Filed: October 24, 1991
    Date of Patent: March 23, 1993
    Assignee: General Motors Corporation
    Inventor: Fritz J. Knapp