Patents by Inventor Andrew B. Steever

Andrew B. Steever 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).

  • Pressurized hot cyclone
    Patent number: 4479817
    Abstract: A cyclone for use at elevated temperature and pressure has a refractory lining and a metallic vortex finder supported by a thermal sleeve.
    Type: Grant
    Filed: April 3, 1980
    Date of Patent: October 30, 1984
    Assignee: Dorr-Oliver, Inc.
    Inventors: Andrew B. Steever, Albert Vitin
  • Refractory construction dome for fluidized bed reactor
    Patent number: 4073064
    Abstract: A refractory constriction dome for a fluidized bed reactor is constructed to resist the upward thrust of pressure in the windbox as well as the weight of the fluidized bed. A reverse arch of refractory brick or tiles, forming the upper surface of the dome, is the structural feature which functions to resist upward thrust.
    Type: Grant
    Filed: April 12, 1976
    Date of Patent: February 14, 1978
    Assignee: Dorr-Oliver Incorporated
    Inventors: Andrew B. Steever, Richard E. Svencer