Patents by Inventor Albert R. Collins

Albert R. Collins 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).

  • Method and apparatus for heating particulate material
    Patent number: 4521182
    Abstract: Particulate material is heated by directing a flame downwardly along the central axis of a vertically disposed furnace. The particulate material is introduced at a number of locations distributed radially around the flame at the upper end of the furnace. The particulate material is directed downwardly and toward the central axis of the furnace placing the particulate material within the flame as it passes downwardly through the furnace.
    Type: Grant
    Filed: January 21, 1982
    Date of Patent: June 4, 1985
    Assignee: Grefco, Inc.
    Inventor: Albert R. Collins