Patents by Inventor David George Malcolm

David George Malcolm 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).

  • Patent number: 4081500
    Abstract: Sulphur pellets are produced by spraying molten sulphur from a vortex nozzle in the form of a downwardly diverging conical sheet or jet. The sulphur impacts on the surface of cooling water in a tank. The diverging nature of the jet and the resulting turbulent swirling action promotes the formation of pellets. Control of the size, surface texture, porosity and density of the pellets can be obtained for a vortex nozzle of any particular design by varying the supply pressure or pressure drop across the nozzle and the distance between the nozzle and the water surface.
    Type: Grant
    Filed: March 23, 1977
    Date of Patent: March 28, 1978
    Assignee: The Cambrian Engineering Group Limited
    Inventor: David George Malcolm