| 摘要 |
<p>Abstract The application refers to a variation of the "Bushfire metallic casing" referred to as "Sliding joint for a metallic casing". An innovation patent certificate was granted on the 15 May 2015 (# 2015100652) for the "Bushfire metallic casing" to this applicant. Bushfire metallic casing is designed to seal the end gap where profiled steel sheeting intersects and is fixed to a structural feature or capping. It protects against entry by fire and ingress of embers to the exposed end of steel roofing. The building fire code requires that there should be no gap larger than 2mm The manufacturing process of steel roof sheeting (roll forming) induces a random dimensional variance across the sheet. There are a number of manufacturing variables that prevail on the degree of variance, this variance can be +/- 8mm therefore outside the dimensional requirements of the bush fire code The patent applicant now proposes the sliding joint which is a three part variable metallic casing slide product that allows adjustment by the roof installer at the time of installation to ensure a less than 2mm gap per profile pitch. This application is a feature that can be added to the previously referred Bushfire metallic casing. Part A of the metallic casing sliding joint (Fig2 ) has a returned flange or lock seam, Part B (Fig3 ) hasa male tongued leading edge that slides into the seam on the inside roof side and a small up turned flange on the front edge so that the two parts are able to slide back and forth to accommodate the adjustment required and not come apart (fig 1) The application covers both the design of the slide and in addition the art of the concept of an adjustable roof infill strip The applicant claims art over the concept of a sliding metallic casing and the design of the lock seam or return flange of any particular configuration. > s' 1~' ( N I-</p> |
