Patents by Inventor Don L. Shaffer

Don L. Shaffer 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: 9683446
    Abstract: A gas turbine engine bladed component, such as a turbine blade, is shown as including a shroud located above a blade portion and a stiffener located above the shroud. The stiffener is generally located in a central interior region of the shroud and includes a raised portion that extends above a top surface of the shroud. In one non-limiting form the stiffener can have a central ridge that is oriented in an axial direction. Seal members can be included in the shroud that can be used to interact with corresponding seal members in static gas turbine engine structure to discourage a flow of fluid. In one form the shroud includes an upturned leading edge portion.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: June 20, 2017
    Assignee: Rolls-Royce Energy Systems, Inc.
    Inventor: Don L. Shaffer
  • Publication number: 20150017003
    Abstract: A gas turbine engine bladed component, such as a turbine blade, is shown as including a shroud located above a blade portion and a stiffener located above the shroud. The stiffener is generally located in a central interior region of the shroud and includes a raised portion that extends above a top surface of the shroud. In one non-limiting form the stiffener can have a central ridge that is oriented in an axial direction. Seal members can be included in the shroud that can be used to interact with corresponding seal members in static gas turbine engine structure to discourage a flow of fluid. In one form the shroud includes an upturned leading edge portion.
    Type: Application
    Filed: December 31, 2013
    Publication date: January 15, 2015
    Inventor: Don L. Shaffer
  • Patent number: 4320931
    Abstract: Bearing adaptable for use in dynamoelectric machine for preventing current from flowing through the bearing itself. A three-part layer including a base material, a ceramic layer, and an adhesion layer is applied sequentially upon the bearing shell. The last layer is then covered with a bearing material, ordinarily babbitt so that the babbitt, is electrically isolated from the bearing shell.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: March 23, 1982
    Assignee: Siemens-Allis, Inc.
    Inventor: Don L. Shaffer