Patents by Inventor Hilard F. Palace

Hilard F. Palace 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: 5141369
    Abstract: A cutting tool such as a body drill has a cylindrical shank portion and a body section connected to the shank portion. The twist section terminates at a cutting end. A pair of flutes are formed in the body section, defining a land therebetween. The land includes a narrow margin having a width between 0.015 and 0.025 inches. The land also has a body clearance of a diameter less than that of the margins. The flutes terminate at flute faces at the cutting end. The flute faces are disposed parallel to each other at a zero degree rake angle. The narrow margin aspect of the invention could also be applied to a counterbore or spotface.
    Type: Grant
    Filed: August 22, 1989
    Date of Patent: August 25, 1992
    Inventor: Hilard F. Palace