Patents Assigned to Machine Design, Inc.
  • Culvert gate assembly
    Patent number: 8870493
    Abstract: A gate assembly for use on a pipe, such as a culvert pipe. The assembly having an adjustable engagement band defining an opening. The opening having a nominal diameter sized to engage a culvert pipe. The diameter of the opening being adjustable by up to plus or minus 30 percent the nominal diameter.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: October 28, 2014
    Assignee: Machine Design, Inc.
    Inventor: Steve Haire