Patents by Inventor Daniel L. Pulliam

Daniel L. Pulliam 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).

  • Patent number: 4489140
    Abstract: A composite brazing material is described, composed of a layer (usually an ingot) of high manganese content aluminum alloy (3000 series alloy; the "core") and a layer of high silicon content aluminum alloy (4000 series alloy; the "cladding") with a layer of aluminum alloy having the following composition:______________________________________ silicon 6.8-8.2 wgt. % iron up to 0.8 wgt. % copper up to 0.25 wgt. % manganese up to 0.10 wgt. % zinc up to 0.20 wgt. % other elements up to 0.15 wgt. % aluminum balance ______________________________________disposed between the cladding and core layers and in contact with both. Subsequent hot rolling of the multi-layer composite produces a good bond between the core and the cladding through the intermediate layer. The resulting brazing material has the external properties of a simple two-layer composite of core and cladding without the intermediate layer.
    Type: Grant
    Filed: June 24, 1982
    Date of Patent: December 18, 1984
    Assignee: Atlantic Richfield Company
    Inventors: Daniel L. Pulliam, John A. Evans, David L. Wilbur, Robert D. Fox