Patents by Inventor Gerald D. Booher

Gerald D. Booher 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).

  • Drill bit
    Patent number: 5807039
    Abstract: A wood drill with a point, cutting lips at the point, a shank and a body. The body having lands defining between them flutes. The flutes have a high helix reach extending from a distance from the cutting lips toward the shank, an intermediate helix reach extending from the high helix reach toward the shank and a low helix reach extending between the intermediate reach and the shank. The drill has screw threads in a peripheral surface of the lands from a point adjacent the cutting lips a distance toward the shank less than the length of the high helix reach of the flutes.
    Type: Grant
    Filed: February 13, 1997
    Date of Patent: September 15, 1998
    Assignee: Credo Tool Company
    Inventors: Gerald D. Booher, Juergen Wiker, Philip O. McKinney