Patents by Inventor Elizabeth Doros

Elizabeth Doros 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).

  • Patent number: 5666831
    Abstract: A locking system comprising a locking fastener having tamper-resistant features, and a special key having a bit at one end for engaging a socket in the head of the locking fastener to rotate the latter. The internal configuration of the socket corresponds to an external configuration of the bit, and the corresponding contour of the socket prevents the fastener from being turned by tools other than the special key. The fastener may have left-handed threads on its shaft and its head may be recessed in a counterbore in a closure part to prevent gripping tools from gripping an external surface of the head. The configurations of both the socket and the key may readily be made by economical metal working techniques.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: September 16, 1997
    Assignee: MCI Corporation
    Inventor: Elizabeth Doros