Patents by Inventor David B. Tuman

David B. Tuman 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).

  • Vibrating conveyor bar cleaning system
    Patent number: 4116326
    Abstract: The invention relates to a system which automatically cleans the grates or bars on a vibrating bark, sawdust and material conveyor. It does this by moving the teeth which are disposed on an oscillating cleaner back and forth from the bottom side of the grate or bar network in a raking action. It changes direction automatically at each end of travel.
    Type: Grant
    Filed: June 15, 1977
    Date of Patent: September 26, 1978
    Inventor: David B. Tuman