Static structures (e.g. – buildings) – Cupola or skylight
Patent
1995-02-10
1998-02-17
Wood, Wynn E.
Static structures (e.g., buildings)
Cupola or skylight
52 58, E04D 338
Patent
active
057180881
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a fitting collar for sealingly joining an underroof to a skylight or another roof installation, where said roof installation is to be installed in a roof by penetrating the roof surface with a cut, which is substantially rectangular in the plane of the penetration.
In order to prevent driving rain, drifting snow, or possibly condensed water from causing moisture damage, an underroof is commonly placed under inclined roofs made from roofing tiles, slating, or corrugated asbestos cement sheets, where said underroofing consists of a possibly reinforced plastic film, which is placed between the laths and rafters of the roof structure.
With conventional underroof products delivered as lengths of plastic film, considerable effort is required to achieve a sufficiently sealed joining of the film of the underroofing to roof installations that break through the roof surface, for instance the main frame structure of skylights, chimneys, or other roof installations. The installation thus becomes both time consuming and expensive.
In order to overcome this problem, the invention aims to provide a fitting collar, which is both inexpensive to manufacture and simple to install, while it at the same time assures an optimally tight joint to the underroof, regardless of whether it is a case of installing skylights or other roof installations in an existing roof or a in new building.
The fitting collar according to the invention is characterized in that it comprises a film element with a substantially U-shaped plane configuration with a cutout, at the sides of which flange parts are provided for attachment of the fitting collar to the mutually adjoining exterior sides of a main frame structure of said window or of said roof installation, in such a manner that the film element is brought to extend substantially in parallel with the roof plane, in order to connect to the adjacent parts of the underroof.
When installing a main frame structure of a skylight, where this conventionally takes place by mounting the mounting brackets fixed to the main frame structure on the rafter elements of the roof structure, the main frame structure is before or after the mounting provided with such U-shaped fitting collars, which are attached to the top member and bottom member, respectively, of the main frame structure, and to a part of the adjoining side members of the main frame. The fitting collar at the top may then without difficulty be inserted under the existing overlying length of underroofing, while the fitting collar at the bottom can be mounted on top of the existing underlying length of underroofing.
During installation on the main frame structure of a window, the fitting collars can be attached to the main frame members by bonding, taping or stapling.
In a preferred embodiment the film element of the fitting collar comprises three single layer film parts, which are welded together at oblique corner joints, and thus define the bottom and the sides of the U-shaped plane configuration, and of which the side parts are substantially perpendicular to the bottom part, whereby the flange parts for attachment are formed by the edge zones of the three elements, said edge zones facing the cutout.
With this design a particularly simple and inexpensive manufacture can be achieved in that it is manufactured by a transversal welding together of two overlapping lengths of film along welded seams, which in connection with a part perpendicular to one of the flush lengthwise sides of the lengths of film in a relatively narrow edge zone, extend obliquely at an angle with respect to the lengthwise direction of the lengths of film corresponding to the prescribed angle for the corner joints, and end at a short distance away from the opposite flush lengthwise sides, after which one of the two lengths of film is cut perpendicular to the lengthwise direction of the film lengths along the mid line between the two welded seams, in order to form the U-shaped plane configuration by folding the two parts of the cut length of film along th
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Aubrey Beth
V. Kann Rasmussen Industri A/S
Wood Wynn E.
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