Patents by Inventor Theodore F. Garland

Theodore F. Garland 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).

  • Coal cleaner
    Patent number: 4222867
    Abstract: An apparatus for cleaning coal of extraneous matter such as gravel and the like includes a stratifying and classifying oscillating screen submerged in a liquid confining tank wherein stratification is produced by motion of the oscillating screen. The screen bottom slopes downwardly and water flow is induced from either end of the screen to aid in the stratification. The coal which rises to the top is removed by several skimmers powered by a vacuum controlled materials handling pump.
    Type: Grant
    Filed: February 23, 1979
    Date of Patent: September 16, 1980
    Assignee: Garland Manufacturing Co.
    Inventor: Theodore F. Garland