Patents by Inventor Derek P. Thomas

Derek P. Thomas 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).

  • Method of tiling a roof with interlocking tiles employing an adjustable rain lock
    Patent number: 8347587
    Abstract: A roofing system includes at least one row of tiles extending across a surface in a row direction, a first tile of the at least one row of tiles including a rain lock adapted to interlock with a second tile adjacent to and within the same row as the first tile, wherein the rain lock has a lower end, an upper end, and a weakened portion proximate the lower end to allow for removal of a predetermined portion of the rain lock. The second tile of the roofing system includes a corner at the upper end of the rain lock of the first tile, the corner including a notch and a second weakened portion to allow for lengthening of the notch.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: January 8, 2013
    Assignee: Ludowici Roof Tile
    Inventor: Derek P. Thomas
  • Interlocking tiles employing adjustable rain lock
    Publication number: 20120102876
    Abstract: A roofing system includes at least one row of tiles extending across a surface in a row direction, a first tile of the at least one row of tiles including a rain lock adapted to interlock with a second tile adjacent to and within the same row as the first tile, wherein the rain lock has a lower end, an upper end, and a weakened portion proximate the lower end to allow for removal of a predetermined portion of the rain lock. The second tile of the roofing system includes a corner at the upper end of the rain lock of the first tile, the corner including a notch and a second weakened portion to allow for lengthening of the notch.
    Type: Application
    Filed: January 12, 2012
    Publication date: May 3, 2012
    Applicant: Ludowici Roof Tile
    Inventor: Derek P. Thomas
  • Interlocking tiles employing adjustable rain lock
    Patent number: 8122649
    Abstract: A roofing system includes at least one row of tiles extending across a surface in a row direction, a first tile of the at least one row of tiles including a rain lock adapted to interlock with a second tile adjacent to and within the same row as the first tile, wherein the rain lock has a lower end, an upper end, and a weakened portion proximate the lower end to allow for removal of a predetermined portion of the rain lock. The second tile of the roofing system includes a corner at the upper end of the rain lock of the first tile, the corner including a notch and a second weakened portion to allow for lengthening of the notch.
    Type: Grant
    Filed: April 7, 2008
    Date of Patent: February 28, 2012
    Assignee: Ludowici Roof Tile
    Inventor: Derek P. Thomas
  • Interlocking tiles employing adjustable rain lock
    Publication number: 20090249729
    Abstract: A roofing system includes at least one row of tiles extending across a surface in a row direction, a first tile of the at least one row of tiles including a rain lock adapted to interlock with a second tile adjacent to and within the same row as the first tile, wherein the rain lock has a lower end, an upper end, and a weakened portion proximate the lower end to allow for removal of a predetermined portion of the rain lock. The second tile of the roofing system includes a corner at the upper end of the rain lock of the first tile, the corner including a notch and a second weakened portion to allow for lengthening of the notch.
    Type: Application
    Filed: April 7, 2008
    Publication date: October 8, 2009
    Applicant: Ludowici Roof Tile
    Inventor: Derek P. Thomas
  • 2/3RDS WIDTH FLAT INTERLOCKING TILES
    Publication number: 20090193746
    Abstract: A system for tiling roofs employs rows of full-width tiles extending across a surface, each row of tiles interspersed with ? or other unconventional width tiles in an irregular, pseudo-random pattern that allows for proper drainage and also has a distinctive appearance.
    Type: Application
    Filed: January 29, 2009
    Publication date: August 6, 2009
    Applicant: Ludowici Roof Tile
    Inventor: Derek P. THOMAS