Patents by Inventor Charles B. Testerman

Charles B. Testerman 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).

  • Threaded fastener and structural joint attained therewith
    Patent number: 4310272
    Abstract: A structural joint including a relatively thin workpiece and an externally threaded fastener having a flanged head with workpiece clamping means on the underside thereof. The clamping means comprises an annular rim on the flanged portion of the head defining a cup-shaped portion having a depth no greater than approximately one-half the pitch of the fastener thread which acts to draw the workpiece material into engagement with the rim.
    Type: Grant
    Filed: January 18, 1980
    Date of Patent: January 12, 1982
    Assignee: Textron Inc.
    Inventors: Roger K. Rich, Charles B. Testerman