Patents by Inventor Ian R. Barnard

Ian R. Barnard 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).

  • Chute for bulk materials
    Patent number: 5289909
    Abstract: An improved chute for conveying bulk materials from a higher location to a lower location includes a number of frustoconical hoppers, which are held in vertically-spaced relationship with the conical axes of adjacent hoppers inclined in different directions relative to the longitudinal axis (35) of the chute. The chute is much less liable than prior chutes to cause segregation or degradation of the bulk material being conveyed.
    Type: Grant
    Filed: July 9, 1992
    Date of Patent: March 1, 1994
    Assignee: Cleveland Potash Ltd.
    Inventors: Arthur S. Maxwell, Ian R. Barnard