Patents Assigned to Barrett Burston (Australia) Limited
  • Dust retention device
    Patent number: 4324524
    Abstract: The device is for retaining dust when particulate material is dumped through the device into a container. The device has a plurality of adjacent inverted-V shaped restrictors which swing about an axis along the point where the two leaves of the V meet. There are material deflectors which unevenly load some of the restrictors.
    Type: Grant
    Filed: January 31, 1980
    Date of Patent: April 13, 1982
    Assignee: Barrett Burston (Australia) Limited
    Inventors: Jonathan D. Burston, Robert G. Henley