Patents by Inventor John Robert Jaconi

John Robert Jaconi 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: 6443674
    Abstract: A self-centering drill comprising: (a) a shank, a body, and a cutting end, all formed integrally in the drill; (b) the body interposed between the shank and the cutting end, the body having a pair of helical flutes and a corresponding pair of helical lands; (c) the cutting end including a substantially flat bottom section having primary cutting lips which are relief ground, the primary cutting lips forming a primary point angle, and a helical crown having a helical crown point tip that extends from the bottom section, the helical crown point tip having self-centering cutting lips; (d) wherein the outside edges of the bottom section are chamfered to form secondary cutting lips which are radially relieved, the secondary cutting lips forming a secondary point angle, (e) the primary point angle being greater than the secondary point angle.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: September 3, 2002
    Assignee: ICS Cutting Tools, Inc.
    Inventor: John Robert Jaconi