Patents by Inventor Donald W. Barnes

Donald W. Barnes 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).

  • Heated ice-melting blocks for steps
    Patent number: 5550350
    Abstract: A device and method for melting ice and snow from walkways and steps is described. The device includes a rigid block of heat-conducting plastic suitable for mounting on steps. An electrical heating element provides heat. The heat is distributed to the entire block and melts the snow or ice on the surface.
    Type: Grant
    Filed: November 17, 1994
    Date of Patent: August 27, 1996
    Assignees: Donald W. Barnes, Dennis N. Dunham
    Inventor: Donald W. Barnes
  • Turbomachine blade fastening
    Patent number: 5152669
    Abstract: Larger cutting tools which have inherently greater strength can be used to form mounting grooves for side-entry rotor blades when the bottom-most neck of the groove is increased in width in the machining process. The larger width leaves a gap on both sides of the bottom-most neck of the root at a location away from load bearing surfaces.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: October 6, 1992
    Assignee: Westinghouse Electric Corp.
    Inventors: Roger W. Heinig, Donald W. Barnes