Patents by Inventor David J. Tookey

David J. Tookey 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).

  • Static mixer
    Patent number: 4264212
    Abstract: According to the present invention a static mixer comprises a passage for the flow therethrough of a liquid or a suspension of particulate solid in a liquid, said passage having in the direction of flow a lengthwise divergent portion followed by a lengthwise convergent portion. An inlet for fluent material to be mixed with the suspension may converge with and project into the divergent portion. Cement and coal slurry may be mixed in this apparatus.
    Type: Grant
    Filed: May 14, 1979
    Date of Patent: April 28, 1981
    Assignee: Blue Circle Industries Limited
    Inventor: David J. Tookey