Patents by Inventor Allen N. Bolte

Allen N. Bolte 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).

  • Cog rake bar screen
    Patent number: 5246573
    Abstract: Apparatus for protecting from water damage the electric motor which drives the cog rake bar screen of a waste water treatment plant. A shell of air impermeable material surrounds the motor and has an opening at the shell bottom to drain water. Various arrangements and devices prevent water or debris from entering the opening.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: September 21, 1993
    Assignee: FMC Corporation
    Inventors: John C. Lodholz, Allen N. Bolte