Patents by Inventor Albert J. Duffield

Albert J. Duffield 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).

  • Corrosion resistant fastening system and method
    Patent number: 4209889
    Abstract: A corrosion resistant fastening system for use with metallic targets exposed to corrosive, aqueous environments, comprising a fastener and a planar coupon each formed of a corrosion resistant alloy. The fastener is driven through the coupon and into the target by means of a powder actuated tool, whereby the coupon is maintained in intimate contact with the target surface. Corrosion thus preferentially occurs at the interface between the target and the coupon, the interface between the target and the fastener being thereby protected.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: July 1, 1980
    Assignee: Olin Corporation
    Inventors: Joseph W. Silva, Albert J. Duffield