Patents by Inventor Brian L. McDermott

Brian L. McDermott 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).

  • Magnetorheological fluids with an additive package
    Patent number: 6824701
    Abstract: One embodiment of the invention includes an MR fluid of improved durability. The MR fluid is particularly useful in devices that subject the fluid to substantial centrifugal forces, such as large fan clutches. A particular embodiment includes a magnetorheological fluid including 10 to 14 wt % of a hydrocarbon-based liquid, 86 to 90 wt % of bimodal magnetizable particles, 0.05 to 0.5 wt % fumed silica, and an additive package including a paraffin oil, a phenol and a sulfide.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: November 30, 2004
    Assignee: General Motors Corporation
    Inventors: John C. Ulicny, Anthony L. Smith, Mark A. Golden, Brian L. McDermott, Thomas J. Chapaton
  • Trapped ball amusement device
    Patent number: 4625968
    Abstract: An amusement device is disclosed comprising a cage having a base, a cap and four corner pins enclosing a ball. One of the corner pins is removable to release the ball from the cage.
    Type: Grant
    Filed: December 18, 1984
    Date of Patent: December 2, 1986
    Inventor: Brian L. McDermott