Patents by Inventor Arthur Field

Arthur Field 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).

  • Publication number: 20020127085
    Abstract: A cutting and locating point for a screw having an elongated threaded shank terminating in a tapered drilling portion including a pair of spiral flutes each with primary cutting edges separated by flats having a split-point geometry and a pair of secondary tip cutting edges. The primary cutting edges create an immediate centering of the screw point and perform the work of cutting a hole for entrance of the screw shank into the workpiece while the secondary cutting edges create a self-centering point of contact with the workpiece so that the screw point will not slide or “walk” one way or another. The flats are disposed between the primary cutting edges and are preferably within a range of 115 degrees to 145 degrees of taper establishing a point angle.
    Type: Application
    Filed: August 20, 2001
    Publication date: September 12, 2002
    Inventor: Arthur Field