Patents by Inventor Justin R. Hammack

Justin R. Hammack 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).

  • Debris/load leveling system
    Patent number: 7721374
    Abstract: A mechanized broom-type sweeper truck that includes a pavement engaging brush or broom and an elevator for transported debris to the inlet or entry opening of a debris container includes a slinging roller in the debris container mounted at or subjacent the inlet opening. The slinging roller is journalled in bearings and driven by a motor at a selected rotary speed. Surface features are provided on the roller to engage with and contact any debris coming into contact with the roller to fling, sling, throw debris away from the inlet opening.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: May 25, 2010
    Assignee: Schwarze Industries, Inc.
    Inventors: Justin R. Hammack, Edward B. Stell