Patents by Inventor Clifford B. Richardson

Clifford B. Richardson 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).

  • Clean air bulk material handling method and system
    Patent number: 5868528
    Abstract: In order to decrease or eliminate environmental contaminants from fluent particulate matter that is removed from bulk material carriers by conventional vacuum conveyor systems, the bulk material carrier is moved into an enclosure which can be closed off from the environment after the carrier is within the enclosure. Clean air containing a prescribed maximum number of particles above a given size floods the entire enclosure and air of even greater cleanliness is fed to a selected discharge valve of the material carrier to entrain the particulate matter in the clean air streams which pass through the bulk material under the influence of the vacuum conveyor.
    Type: Grant
    Filed: April 1, 1997
    Date of Patent: February 9, 1999
    Assignee: Hendrix Wire & Cable, Inc.
    Inventors: John W. Howanski, Clifford B. Richardson
  • Clean air bulk material handling system
    Patent number: 5639188
    Abstract: In order to decrease or eliminate environmental contaminants which are added to fluent particulate matter removed from bulk material carriers by vacuum conveyor systems, the bulk material carrier is moved into an enclosure which can be closed off from the environment after the carrier is within the enclosure. Clean air containing a prescribed maximum number of particles above a given size floods the entire enclosure and air of even greater cleanliness is fed to each hatch of the material carrier to entrain the particulate matter in the clean air streams which pass though the bulk material under the influence of the vacuum conveyor.
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: June 17, 1997
    Assignee: Conductron Corporation
    Inventors: John W. Howanski, Clifford B. Richardson