Patents by Inventor John R. DeWitt

John R. DeWitt 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: 5020999
    Abstract: This invention relates to personal computers, and more particularly to personal computers having a connector assembly with an integral retainer enabling resistance to disconnection which would interfere with continued operation of the computer. A particular configuration of card edge connector is provided, and a mating cable end connector is provided with latches which engage and grip undercut portions of recesses adjacent the card edge connector.
    Type: Grant
    Filed: July 19, 1990
    Date of Patent: June 4, 1991
    Assignee: International Business Machines Corporation
    Inventors: John R. Dewitt, Jay H. Neer
  • Patent number: 5004866
    Abstract: An apparatus for electromagnetically shielding electronic equipment has a first and second spaced apart housing members having a gap between them. A rigid member having a plurality of openings is interposed between them. A spring member connected to the rigid member has a plurality of spring fingers extending through openings in the rigid member. A cover member has a cam which forces the first housing member against one side of the spring member to extend the spring finger into the second housing member in order to cause an electrical connection between the first and second housing members.
    Type: Grant
    Filed: October 27, 1989
    Date of Patent: April 2, 1991
    Assignee: International Business Machines Corp.
    Inventors: Kevin K. Cooke, John R. Dewitt, Paul J. Galinis, Walter B. Koteff
  • Patent number: D314195
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: January 29, 1991
    Assignee: International Business Machines Corporation
    Inventors: Kevin K. Cooke, Myron F. Davis, John R. DeWitt, John E. McCloskey