The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 05, 1988
Filed:
Jan. 13, 1987
Verner Leth, Aalborg, DK;
Dansk Eternit-Fabrik A/S, Aalborg, DK;
Abstract
A roofing plate (10), such as a corrugated, interlocking tile, is at its upper side surface provided with a proofing strip (27) arranged extending across the corrugations of the roofing plate at the upper edge thereof. The proofing strip (27) is constituted by a strip of upright synthetic fibres, such as a combination of polyamide fibres of a length of 3 mm and of a length of 5 mm and of thickness of 0.05 mm (22 dtex). The strip (27) is adapted to provide a barrier when its is clamped between the upper side surface of the roofing plate and the lower side surface of an adjacent roofing plate, and the barrier permits the passage of air from the inside of a loft defined below the roofing plates and out and form the outside and into the loft and further permits the passage of water from the inside of the loft and out, and blocks the passage of water and dust form the outside and into the loft. A further proofing strip (29) may be arranged along one of the edges of the roofing plate extending along the corrugations thereof. The proofing strip (27) may be provided as a single component adapted to be arranged on the upper or lower side surface of a roofing plate prior to the arrangement of the roofing plate overlapping another roofing plate on the roof and may comprise a base layer having a glue layer and a slip paper, if desired. The proofing strip (27) may be applied to the roofing plate (10) in an electrostatical application process (Flock application) and retained in a glue layer of the roofing plate. (FIG. 1).