With Means To Agitate Load In Receptacle Patents (Class 406/134)
Rotary (Class 406/135)
Fluid (Class 406/136)
  • Combination gravity/pneumatic hopper bottom
    Patent number: 4360295
    Abstract: A bottom assembly for a hopper vehicle is adapted to permit safe pneumatic unloading as well as gravity unloading of a hopper. The bottom assembly includes a membrane mounted to be moved over and away from a hopper bottom opening, and sealing devices for insuring a secure seal for the hopper which can be easily set. A discharge manifold is connected to the hopper at a location spaced from the hopper bottom opening, and the hopper bottom opening is contained in a plane which is tilted with respect to the horizontal.
    Type: Grant
    Filed: June 25, 1980
    Date of Patent: November 23, 1982
    Assignee: North American Car Corporation
    Inventor: Arthur I. Anderson