Patents by Inventor William D. Dorman

William D. Dorman 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).

  • Annular shaft kiln
    Patent number: 4668184
    Abstract: An improved annular shaft kiln for burning particulate material such as limestone which adds a bridge to the lower part of the annular material zone between the burning zone and the cooling zone. This bridge permits heated cooling gas and at least some of the spent cooling gas to be withdrawn from the annular zone and be supplied directly to the combustion chamber of the kiln.
    Type: Grant
    Filed: July 8, 1986
    Date of Patent: May 26, 1987
    Assignee: Fuller Company
    Inventor: William D. Dorman