Patent ID: 6187401
Filing Date: 2001-02-13
Classification: B32B,E04C,Y10T

Abstract:
A double walled body comprising:first and second spaced apart cover panels with a surface on one panel opposed to a surface on the other panel; a plurality of apertures defined in the cover panels, the cover panels being so placed and the apertures being so placed in the cover panels that the apertures are in respective sets with one aperture in each of the panels;respective pluralities of first and second cylinder shaped spacers, each spacer having an axis through the cover panels;the first spacers each having a length along its axis corresponding to the clear width distance between the cover panels to engage the opposed surfaces of the cover panels;the second spacers each having axially opposite end regions and each second spacer being of a length to cause its end regions to extend in a respective set of apertures in the cover panels for the respective spacer;whereby both of the first and second spacers support the cover panels.