Patents by Inventor Lewis M. Rolls

Lewis M. Rolls 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).

  • Pencil sharpener
    Patent number: 6338198
    Abstract: A pencil sharpener for sharpening carpenters pencils of the type having a generally rectangular cross-section by squeezing a base member and cover member relative to each other repeatedly while the pencil is positioned in one of two openings in the wall of the sharpener to bring cutting blades into cutting engagement with opposed edges of the pencil. One of the openings serves for sharpening opposed walls of the wide portion of the pencil and the other of the openings serves to position the pencil for sharpening the opposed walls of the narrow portion of the pencil.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: January 15, 2002
    Inventor: Lewis M. Rolls