Patents by Inventor Joseph E. Due

Joseph E. Due 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).

  • Scraper apparatus and method
    Patent number: 7249914
    Abstract: A scraper apparatus including a cart and a scraping arrangement located at a front of the cart. The scraping arrangement includes blades that are driven along a joint or crack by the cart to remove excess filling material deposited in the joint or crack of a working surface.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: July 31, 2007
    Inventor: Joseph E. Due
  • Scraper apparatus and method
    Patent number: 7112005
    Abstract: A scraper apparatus includes a cart and a scraping arrangement located at a front of the cart. The scraping arrangement includes blades that are driven along a joint or crack by the cart to remove excess filling material deposited in the joint or crack of a working surface.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: September 26, 2006
    Inventor: Joseph E. Due
  • Engraver apparatus and method
    Patent number: 7000605
    Abstract: A concrete engraver apparatus including a carrier for use with a hand-held engraver. The hand-held engraver is detachably mounted to the carrier. The carrier has wheels and a handle attached to an enclosure. The enclosure includes a vacuum mount for attaching a vacuum tube to evacuate loosened particles from the enclosure during operation of the hand-held engraver.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: February 21, 2006
    Inventor: Joseph E. Due
  • Concrete grinder apparatus
    Patent number: 6786556
    Abstract: A concrete grinding apparatus for use with a hand-held concrete grinder that can be detachably mounted in either a right-facing orientation or a left-facing orientation. The apparatus providing a variable wheelbase to modify grinder pressure acting upon a working surface. The apparatus further providing a mechanism to adjust the levelness of the hand-held grinder.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: September 7, 2004
    Inventor: Joseph E. Due
  • Concrete grinder apparatus
    Publication number: 20030127904
    Abstract: A concrete grinding apparatus for use with a hand-held concrete grinder that can be detachably mounted in either a right-facing orientation or a left-facing orientation. The apparatus providing a variable wheelbase to modify grinder pressure acting upon a working surface. The apparatus further providing a mechanism to adjust the levelness of the hand-held grinder.
    Type: Application
    Filed: June 10, 2002
    Publication date: July 10, 2003
    Inventor: Joseph E. Due
  • Machine and method for grooving pavement
    Patent number: 4456303
    Abstract: A method and apparatus are disclosed for grinding out a crack in pavement in preparation for filling the crack. A narrow groove is formed in the pavement following the crack by a single grooving blade having a first thickness. The single grooving blade is replaced with a second grooving blade assembly having a thickness greater than the single grooving blade, and the second grooving blade assembly is moved along the groove and with the second grooving blade assembly engaging opposite edges of the groove and for forming upwardly outwardly sloping sidewalls.
    Type: Grant
    Filed: April 5, 1982
    Date of Patent: June 26, 1984
    Inventor: Joseph E. Due