Buckles – buttons – clasps – etc. – Bale and package ties – hose clamps – Plastic band
Patent
1988-08-12
1990-02-20
Sakran, Victor N.
Buckles, buttons, clasps, etc.
Bale and package ties, hose clamps
Plastic band
24 17A, 24350, B65D 6300
Patent
active
049014030
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a fastening a protectiveor a covering sheet material, such as a plastic film or a textile material, to a scaffold or a similar frame structure.
When buildings are being renovated or repaired a scaffold is normally built up along the outer walls of the building, and the outer side of the scaffold is may be covered by a reinforced plastic film or a textile or fabric like material. The purpose of such protective sheet material is partly to prevent dust and other foreign matter from spreading to the surrounding area, and party to protect the building and the persons working on the scaffold against bad weather conditions. Up till now, such protective sheet material has normally been fastened to scaffolds by means of an anchor-like fastening means comprising an elongated member having a transverse abutting member at one end and a hook member at the other end. From the scaffold side of the protective sheet material, the abutting member end of the fastening means may then be inserted through a suitably preformed opening in the sheet material so that the abutting member is brought into abutting engagement with the outer surface of the sheet material. The hook member of the fastening means located at the inner side of the protective sheet material may now be fastened to the scaffold by means of a separate rubber band. When the outer walls of a large building is to be covered in this manner, a large number of fastening means and corresponding rubber bands must be used. As the mounting of each fastening means involves several steps, namely preforming an opening in the protective sheet material, insertion of the abutting member of the fastening means through such opening and fastening of the hook member of the fastening means to the scaffold by means of a rubber band, which must be wound around a scaffold member one or more times to obtain a suitable tautness, the conventional method of mounting a protective sheet is rather time consuming.
The present invention provides a fastening means allowing fastening of a protective sheet material to a scaffold or a similar frame structure in a substantially simpler and easier manner.
The fastening means according to the invention is of the above type comprising an elongated member to be inserted through an opening in the protective sheet material and having a transverse member at one end thereof for engaging with the side surface of the sheet material located opposite to the frame structure, the other end portion of the elongated member being adapted to be fastened to the frame structure, and the fastening means according to the invention is characterized in that the elongated member has a sheet penetrating pointed end, the transverse member being a barb-like member arranged at that end.
The fastening means according to the invention renders it possible to fasten a covering sheet material to a scaffold or another frame structure in a very simply manner eliminating the need of performing openings in the sheet material. Thus, from the scaffold's side the protective sheet material may be penetrated by the pointed end of the elongated member and the barb-like member may be inserted through the opening thus formed. The barb-like member may then abuttingly engage with the outer side surface of the sheet material and prevent withdrawal of the fastening means from the sheet material. The other end of the elongated member of the fastening means may thereafter be fastened to an adjacent scaffold element in any suitable manner.
In the preferred embodiment, the elongated member is of the strip fastener type of adjustable length allowing a simple fastening of the elongated member to the scaffolds and subsequent tightening of the fastening means. Such strip fastener be of any conventional type, for example as disclosed in U.S. Pat. Nos. 3,098,271, 3,365,753, 3,924,298, and 4,150,463, German Pat. No. 3,011,121, and German Offenlegungsschrift No. 3,049,066. Thus, the elongated member may be a band or a strip member having in one end portion thereof an opening fo
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