Patents Examined by Johnathan A Johnson
  • Fluxless brazing method and method for manufacturing layered material systems for fluxless brazing
    Patent number: 6959853
    Abstract: A brazing product for fluxless brazing comprises an aluminum or aluminum alloy substrate; a layer of an aluminum eutectic-forming layer applied to the substrate, and a braze-promoting layer comprising one or more metals from the group comprising nickel, cobalt and iron is applied on the eutectic-forming layer. The eutectic-forming layer is preferably Si deposited by physical vapor deposition. The brazing product may be brazed to another aluminum shape or to a shape comprised of a dissimilar metal.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: November 1, 2005
    Assignee: Dana Canada Corporation
    Inventors: Michael E. Graham, Margaret Anna Hoffman, Brian E. Cheadle, Richard A. Hoffman