Patents by Inventor Mark F. Zeller

Mark F. Zeller 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).

  • Retaining clamp for disc brake pistons
    Patent number: 4671144
    Abstract: A tool is provided having a back wall, two spaced bottom walls extending from the bottom end of the back wall and two spaced front walls extending upwardly from the ends of the bottom walls which form a generally "U"-shaped channel that is suitable to be used as a retaining clamp for disc brake pistons during the replacement of the disc brake pads in heavy duty, multiple piston brake systems.
    Type: Grant
    Filed: February 21, 1986
    Date of Patent: June 9, 1987
    Assignee: N.T.T. Corporation
    Inventor: Mark F. Zeller