Patents by Inventor David L. Messinger

David L. Messinger 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: 20020081957
    Abstract: An adhesive-backed sandpaper disc is affixed to the side wall of a standard off-the-shelf circular saw blade having two opposed flat planar faces devoid of any recesses and surrounded by a periphery of cutting teeth. The disc is made in a generally circular shape with an abrasive affixed on one surface and a layer of adhesive provided on an opposite surface covered with a release paper to prevent contamination before use. The sandpaper disc includes a plurality of slots extending toward or to the periphery of the disc which combine with the surface of the saw blade to create recesses that permit channeling of saw dust created during cutting and sanding operations. In an alternative embodiment, the slots can spiral in an arcuate path from adjacent the center of the disc to the periphery to enhance the ability of the slots to channel saw dust radially outwardly from the disc. A plurality of holes form cylindrical recesses in conjunction with the face of the saw blade to which the disc is affixed.
    Type: Application
    Filed: December 26, 2001
    Publication date: June 27, 2002
    Inventors: Al Cisneros, David L. Messinger
  • Patent number: 5163748
    Abstract: An illuminated clipboard is disclosed having a transparent board to which is attached a housing carrying a pivotable clip. The board has double beveled edges designed to enhance internal light reflections from sources of light mounted on one end of the board and embedded within it. The housing not only carries the pivotable clip but also includes a clock device and battery powered electrical circuitry designed to not only operate the above-mentioned light sources but also to operate a further light source.
    Type: Grant
    Filed: February 14, 1992
    Date of Patent: November 17, 1992
    Inventor: David L. Messinger