Patents by Inventor Heath Lynn Hartwig

Heath Lynn Hartwig 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).

  • Comminuting screen for hammermills
    Patent number: 5692688
    Abstract: A hammermill having a polygon profile screen which provides for improved hammer impact and crushing efficiency. Particles in the working zone of the hammermill tend to be accelerated in the direction of hammer rotation. This acceleration lessens the speed differential between the hammer and the particle, which lessens the impact force and crushing efficiency. The polygonal screen inhibits this acceleration of particles in the working zone, due to flow interruptions caused by its irregular shape, thus increasing the particle-to-hammer speed differential and crushing efficiency.
    Type: Grant
    Filed: August 1, 1996
    Date of Patent: December 2, 1997
    Assignee: California Pellet Mill Company
    Inventors: Ted D. Waitman, Heath Lynn Hartwig