Patents by Inventor James Frances McDiarmid

James Frances McDiarmid 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).

  • DISCHARGING MATERIAL FROM HOPPERS AND THE LIKE
    Publication number: 20110240671
    Abstract: An apparatus to effect optimum delivery of dry bulk material from a hopper includes a device to provide vibratory stimulus to the hopper. The device for providing vibratory stimulus includes a device to identify the resonant frequency of the hopper and its contents at any time and to automatically continuously vary the frequency of the vibratory stimulus to maintain this frequency at, or close to, the resonant frequency of the hopper and its contents.
    Type: Application
    Filed: May 12, 2008
    Publication date: October 6, 2011
    Inventors: James Frances McDiarmid, Graham Reginald Reginald, Vincent Rouillard