Patent ID: 7246475
Filing Date: 2007-07-24
Classification: E04F,Y10T

Abstract:
1. A method for detachably affixing a planar component to a sub-surface using a first shaped foil and a second shaped foil, wherein the first shaped foil comprises a plurality of longitudinally-extending projections with longitudinally-extending grooves defined between peaks of adjacent projections such that the first shaped foil has an overall shape selected from the group consisting of substantially wave-shaped, substantially sinusoidal-shaped and substantially corrugated, wherein the internal lateral cross-section of at least one groove is defined such that, between a narrowed internal lateral cross-section and the bottom of the groove, an internal lateral cross-section that is wider than said narrowed internal lateral cross-section is provided, wherein a longitudinally-extending undercut is defined by said narrowed internal lateral cross-section, and wherein the longitudinally-extending projections and grooves are asymmetrical to the extent that the width of said undercuts is smaller than the lateral cross-section of each projection at its widest point, and wherein the shape of the second shaped foil is the same, or substantially the same, as the first shaped foil that has been rotated by 180°, wherein widest lateral cross-sectional points of longitudinally-extending projections of the second shaped foil are arranged and constructed to interlock with the respective longitudinally-extending undercuts of the grooves of the first shaped foil such that the second shaped foil is non-displaceably reined in the first shaped foil in at least one direction perpendicular to the longitudinally-extending grooves, wherein the method comprises: affixing the first shaped foil to the sub-surface, applying the second shaped foil to the first shaped foil such that the longitudinally-extending undercuts of the first shaped foil interlock with said widest points of the longitudinally-extending projections of the second shaped foil, applying a first hardenable connecting material to the second shaped foil and/or to the planar component, wherein said first hardenable connecting material adheres to at least the planar component, and pressing the planar component onto the second shaped foil such that the first hardenable connecting material is at least partially received in the grooves of the second shaped foil and, after hardening, the hardened connecting material non-displaceably retains the planar component on the second shaped foil.