Patents by Inventor Darrel E. Smith

Darrel E. Smith 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).

  • Thread-cutting apparatus
    Patent number: 4645386
    Abstract: Thread-cutting apparatus includes an indexable insert having multiple thread-cutting profiles. The invention may be embodied either in a thread-milling insert or a thread-chasing insert. The insert is configured to provide clearance for internal threading and to enable cutting force to be directed through a large cross-sectional area of the insert.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: February 24, 1987
    Assignee: The Ingersoll Cutting Tool Company
    Inventor: Darrel E. Smith
  • Thread-cutting apparatus
    Patent number: 4531863
    Abstract: Thread-cutting apparatus includes an indexable insert having multiple thread-cutting profiles. The invention may be embodied either in a thread-milling insert or a thread-chasing insert. The insert is configured to provide clearance for internal threading and to enable cutting force to be directed through a large cross-sectional area of the insert.
    Type: Grant
    Filed: January 31, 1984
    Date of Patent: July 30, 1985
    Assignee: The Ingersoll Cutting Tool Company
    Inventor: Darrel E. Smith