Patent ID: 6865855
Filing Date: 2005-03-15
Classification: E04B,E04F

Abstract:
1. An arrangement of panel shaped or strip shaped building members made of wood, wood material or wood based material, comprising: first and second components each having a top surface, a bottom surface and at least one edge face, a groove defining an opening through at least one edge face of the first component, the groove having first and second walls extending from the opening in the component and inwardly converging at first oblique angles toward a groove bottom with the first and second walls each having an outer portion of a selected extent and an inner portion; first and second contact surfaces disposed at the outer portion of the first and second walls, the first and second contact surfaces converging at oblique angles from the outer portions of the walls with respect to planes defined by the top and bottom surfaces of the first component, the contact surfaces having extents less than and oblique angles steeper than the outer portions of the walls; a tongue projecting from the at least one edge of the second component for receipt through the opening when the edges of the components are in abutment; the tongue having first and second opposed surfaces for abutting the first and second walls of the groove when inserted into the groove, the first and second surfaces having at least inner portions abutting and complementing the outer portions of the first and second walls, and shoulders abutting and complementing the contact surfaces on the outer portions of first and second walls to positively retain the tongue in the groove.