Patents by Inventor David D. Keane

David D. Keane 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).

  • Magnetic particle separator
    Patent number: 4000062
    Abstract: A separator for separating small permanent magnetic particles from larger objects comprising a non-magnetic perforated basket within a non-magnetic solid wall container, both within a generally vertical rotating magnetic field. The basket supports the mixture of permanent magnetic particles and objects and has perforations larger than the permanent magnetic particles and smaller than the objects. The container extends below the magnetic field to receive the magnetic particles as they are separated and to retain them outside of the influence of the magnetic field.
    Type: Grant
    Filed: April 21, 1975
    Date of Patent: December 28, 1976
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: David D. Keane