Patents by Inventor Dwight W. McDaniel

Dwight W. McDaniel 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).

  • Cup seal for use in a master cylinder
    Patent number: 4061346
    Abstract: The lip of a cup seal for use in a master cylinder incorporates a semi-torus of material extending axially outward from the outer peripheral end of the seal lip. The added material is positioned immediately adjacent, but slightly radially inward from, the sharp lip edge. This added material prevents the lip from hanging up on the edges of compensation ports which open into the master cylinder bore, particularly during initial installation.
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: December 6, 1977
    Assignee: General Motors Corporation
    Inventors: John R. Coleman, Dwight W. McDaniel