Patents by Inventor John E. Leonard, Jr.

John E. Leonard, Jr. 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 tools
    Patent number: 4752164
    Abstract: Chaser for cutting threads on a work piece, the chaser having thread cutting formations with crests and roots, one flank of each of said formations being relieved at a first angle from the region of the crest toward the root and being relieved at a greater angle in the region adjacent the root of the formation. The chasers may be provided in sets with odd numbered chasers being mirror images of the even numbered chasers.
    Type: Grant
    Filed: December 12, 1986
    Date of Patent: June 21, 1988
    Assignee: Teledyne Industries, Inc.
    Inventor: John E. Leonard, Jr.