Patents by Inventor Lewis E. Tolan

Lewis E. Tolan 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 nozzle with edge filter
    Patent number: 4312479
    Abstract: An edge filter for a fuel injection nozzle is provided with an improved connection to the stem of the nozzle. The connection comprises opposed cylindrical guide sectors on the filter having axial knurls that extend less than the full length of the guide sectors thereon. The knurls, which are case hardened, provide secure interference interengagement with the softer counterbore of the nozzle's fuel inlet stem. The guide sectors advantageously provide an edge filtering function as well as a guiding function.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: January 26, 1982
    Assignee: Stanadyne, Inc.
    Inventor: Lewis E. Tolan