Patents by Inventor Jack L. Purcell

Jack L. Purcell 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).

  • Portable spot mixing apparatus
    Patent number: 4491422
    Abstract: A portable spot mixing apparatus (10) including a drive unit (11), a mixing unit (12), a handle (13), and a brake unit (14). The mixing unit (12) serves to stir and mix grain (53) within a specified local area and the brake unit (14) prevents the apparatus (10) from becoming buried in the grain (53) during use.
    Type: Grant
    Filed: July 29, 1983
    Date of Patent: January 1, 1985
    Inventors: Franklin J. Salter, Jack L. Purcell