Patents by Inventor John L. Headley

John L. Headley 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).

  • Fiber mixtures for brake pads
    Patent number: 5871159
    Abstract: A method and product to replace asbestos in brake pads and other molded friction materials. Conductive fibers and non-conductive fibers, both of small diameter and an average length less than two inches (5 cm), are mixed together in predetermined ratio to facilitate uniform suspension of friction materials in a moldable mixture. Steel, copper, or brass are preferred for the conductive fibers; aramid and acrylic resins are preferred for the non-conductive fibers.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: February 16, 1999
    Assignee: American Metal Fibers, Inc.
    Inventors: Robert A. Carlson, John L. Headley