Patents by Inventor Ralph W. Effinger

Ralph W. Effinger 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).

  • Squirrel repellent bird feeder
    Patent number: 6418878
    Abstract: A bird feeder equipped with an electrically powered spinning mechanism that is triggered by the weight of a squirrel on the feeder is described. Upon detection of a squirrel on the feeder, the spinning mechanism rotates the feeder at a rate adequate to centrifugally remove the invading squirrel while resulting in a minimum loss of feed contained in the feeder.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: July 16, 2002
    Inventors: Phillip Walton Cathell, John Merrill Davis, III, Jane Dornbusch Davis, Francis Wendell Johnson, Louis Pitts Holt, III, Mark Wayne Kitchen, Laurance Edward Dockery, Ralph W. Effinger, John Merrill Davis, Jr.
  • Squirrel repellent bird feeder
    Patent number: 6341576
    Abstract: A bird feeder equipped with an electrically powered spinning mechanism that is triggered by the weight of a squirrel on the feeder is described. Upon detection of a squirrel on the feeder, the spinning mechanism rotates the feeder at a rate adequate to centrifugally remove the invading squirrel while resulting in a minimum loss of feed contained in the feeder.
    Type: Grant
    Filed: June 27, 2000
    Date of Patent: January 29, 2002
    Assignee: ILS Corporation
    Inventors: Philip Walton Cathell, John Merrill Davis, III, Jane Dornbusch Davis, Francis Wendell Johnson, Louis Pitts Holt, III, Boris M. Sverdlov, Mark Wayne Kitchen, Laurence Edward Dockery, Ralph W. Effinger, John Merrill Davis, Jr.