Patents by Inventor Douglas Riggins

Douglas Riggins 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).

  • System and method of reinforcing diverter switches
    Patent number: 7790254
    Abstract: A reinforced diverter switch is molded with a flange having a reinforcing material embedded therein. A shaft of a diverter switch is wrapped with a reinforcing material. The shaft of the diverter switch may be wrapped by first removing a portion of the epoxy resin to expose a conductor of the diverter switch, machining a portion of the epoxy resin, and then filament winding the reinforcing material over the portion of the epoxy resin machined.
    Type: Grant
    Filed: April 9, 2007
    Date of Patent: September 7, 2010
    Assignee: Waukesha Electric Systems, Inc.
    Inventors: Geoff Webb, Douglas Riggins, John Pruente
  • System and method of reinforcing diverter switches
    Publication number: 20070253786
    Abstract: A reinforced diverter switch is molded with a flange having a reinforcing material embedded therein. A shaft of a diverter switch is wrapped with a reinforcing material. The shaft of the diverter switch may be wrapped by first removing a portion of the epoxy resin to expose a conductor of the diverter switch, machining a portion of the epoxy resin, and then filament winding the reinforcing material over the portion of the epoxy resin machined.
    Type: Application
    Filed: April 9, 2007
    Publication date: November 1, 2007
    Inventors: Geoff Webb, Douglas Riggins, John Pruente
  • Method and apparatus for filtering tap changer oil
    Patent number: 7033513
    Abstract: A filter apparatus suitable for electrical substation high-voltage transformer tap changers and similar oil-filled equipment removes moisture and other contaminants from the insulating oil bath in which the tap contacts are immersed. The apparatus can be configured and subsequently reconfigured for use with any of a variety of filter media using a common pump and control mechanism and an assortment of adapters.
    Type: Grant
    Filed: June 19, 2003
    Date of Patent: April 25, 2006
    Assignee: Waukesha Electric Systems, Incorporated
    Inventors: Douglas Riggins, Angelynn G. Price, John F. Puente
  • Method and apparatus for filtering tap changer oil
    Publication number: 20040256332
    Abstract: A filter apparatus suitable for electrical substation high-voltage transformer tap changers and similar oil-filled equipment removes moisture and other contaminants from the insulating oil bath in which the tap contacts are immersed. The apparatus can be configured and subsequently reconfigured for use with any of a variety of filter media using a common pump and control mechanism and an assortment of adapters.
    Type: Application
    Filed: June 19, 2003
    Publication date: December 23, 2004
    Applicant: Waukesha Electric Systems, Incorporated
    Inventors: Douglas Riggins, Angelynn G. Price, John F. Puente