Static structures (e.g. – buildings) – Disparate sheet lamina between exposed surfaces of wall,... – Additional material forming bond
Patent
1997-02-04
1998-12-15
Smith, Creighton
Static structures (e.g., buildings)
Disparate sheet lamina between exposed surfaces of wall,...
Additional material forming bond
52408, 52409, 52445, 52446, 5274611, 527481, E04B 500
Patent
active
058485104
ABSTRACT:
An improved base sheet for a roofing assembly wherein the base sheet is perforated with a plurality of apertures characterized by non-cylindrical cutouts in the shape of a closed figure or a polygon having at least two sides or boundaries of unequal length which aperture configuration permits strong attachment of the sheet to a substrate without the aid of auxiliary attachment means and without weakening of the base sheet structure.
REFERENCES:
patent: 3135069 (1964-06-01), Schuller et al.
patent: 5253461 (1993-10-01), Janoski et al.
patent: 5367849 (1994-11-01), Bullock
Grazman Brent L.
Woodring William J.
Building Materials Corporation of America
Davis William J.
Edwards W. Glenn
Maue Marilyn J.
Smith Creighton
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