Patents by Inventor Donald W. Angermeier

Donald W. Angermeier 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).

  • Ball throwing machine conversion for pitch change
    Patent number: 7900618
    Abstract: Embodiments of the present invention involve modification of a type of existing ball throwing machine to add the ability to quickly change the type of throw between one and another in a sequence of throws. One illustrated embodiment involves modification of existing components and adding some to the existing machine to add the performance feature. Another illustrated embodiment involves less modification the existing machine but obtaining the performance feature with pre-assemblies of components.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: March 8, 2011
    Inventor: Donald W. Angermeier