Patents by Inventor Robert Lee Adler

Robert Lee Adler 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: 8167688
    Abstract: A handheld, arrow broadhead cutting blade sharpener used for cutting blades on an arrow broadhead, knife blades and other cutting edges. The sharpener includes a hollow handle with a first end and a second end. Included inside the first end of the handle is a first coarse stone holder with a first angled groove therein for holding a first coarse sharpening stone. The first end also includes a second coarse stone holder having a second coarse stone holder with a second angled groove therein for holding a second coarse sharpening stone. The ends of the first and second fine sharpening stones extend outwardly from the first end of the handle and are held in a ā€œVā€ shaped configuration adapted for receiving an edge of a cutting blade there between. The second end of the handle includes a pair of fine sharpening stones held in a ā€œVā€ shaped configuration for providing a finely sharpened edge on the cutting blade.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: May 1, 2012
    Inventor: Robert Lee Adler