Patents by Inventor Roy Lee Draughn

Roy Lee Draughn 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).

  • Hot plug subsystem for processor based electrical machine
    Patent number: 6434652
    Abstract: A device that enables a card to be hot-plugged into a socket on a processor-base machine includes a signal bus arbitrator, a signal bus switch, a power bus switch, a cover plate switch, status signals and a controller. The controller monitors the status signals and other signals from the cover plate switch and the signal bus arbitrator to generate control signals that activate the power bus switch and the signal bus switch to control power and signal transmitting facilities at the socket.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: August 13, 2002
    Assignee: International Business Machines Corporation
    Inventors: Robert Thomas Bailis, Thomas Lee Bonds, Jr., Roy Lee Draughn, Alvin Dean Genzlinger, David John Jensen, Charles Steven Lingafelt, Brian Scott Oakley, Michael James Ward
  • Backplane for common building block
    Patent number: 6349037
    Abstract: An electrical machine, such as a router, switch, hub, etc., includes a housing in which a Primary Backplane and Secondary Backplane are mounted in stacked spaced relationship. A primary Bus is fabricated on the Primary Backplane and a secondary Bus is fabricated on the Secondary Backplane. Connectors with feed through elements provide mechanical support and electrical transmission between the Primary Backplane and Secondary Backplane.
    Type: Grant
    Filed: May 4, 1999
    Date of Patent: February 19, 2002
    Assignee: International Business Machines Corporation
    Inventors: Roy Lee Draughn, Christopher Lee Durham, Robert Fung-chen Pan, Theodore Brian Vojnovich
  • Hot plug of adapters using optical switches
    Patent number: 6125417
    Abstract: A device that enables a card to be hot-plugged into a socket on a processor-base machine includes a signal bus arbitrator, a signal bus switch, a power bus switch, a cover plate switch, status signals and a controller. The controller monitors the status signals and other signals from the cover plate switch and the signal bus arbitrator to generate control signals that activate the power bus switch and the signal bus switch to control power and signal transmitting facilities at the socket.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: September 26, 2000
    Assignee: International Business Machines Corporation
    Inventors: Robert Thomas Bailis, Thomas Lee Bonds, Jr., Roy Lee Draughn, Alvin Dean Genzlinger, David John Jensen, Charles Steven Lingafelt, Brian Scott Oakley, Michael James Ward