Patents Assigned to Jerzy Kalisiak
  • Patent number: 7331147
    Abstract: A hexagonal paving panel, the sides of which are alternately provided with upper and lower connecting elements in the form of tab or overlap elements (102, 103) and fixing pins. The panel (100) is provided with a central aperture (109) and with a downwardly extending collar (101) on its periphery. The central aperture serves as a drain hole, stabilizes the panel on a ground and improves storage of the panels in a stack. The bottom surface (114) of the panel is provided with recesses (20) having small depth and large obtuse angle, while the top surface is anti-slip. Upper overlap elements (103) alternately protrude from sides of the panel beyond the collar (101) while lower overlap elements (103) are formed by reduction of thickness of the collar.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: February 19, 2008
    Assignee: Jerzy Kalisiak
    Inventors: Jerzy Kalisiak, Jerzy Szulc