Patents by Inventor Jeffrey E. Daly

Jeffrey E. Daly 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).

  • Method of making a threaded retainer ring for a roller cutter on a drill bit
    Patent number: 5012701
    Abstract: A method of making a threaded ring (24) into two (2) semicircular portions (30, 32) for fitting within a groove (19) on a journal (12) of a drill bit (10) to retain a roller cutter (20) thereon. The ring (24) is first formed with screw threads (26) about an oversized outer diameter and then cut into two semicircular portions (30, 32). The amount of the oversized outer diameter compensates for the thickness of the material removed by the cut as shown at W. If the thickness of the cut exceeds a certain amount, yielding of the ring is provided as shown in FIGS. 3-7 to provide a permanent set to compensate for the thickness W of the material removed.
    Type: Grant
    Filed: February 5, 1990
    Date of Patent: May 7, 1991
    Assignee: Camco International Inc.
    Inventor: Jeffrey E. Daly