| History of Helical Fixings |
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1967GKN/Timber Research and Development Association (TRADA) study addresses the effect of timber shrinkage on the integrity of conventional nails. The project delivers headless helical fasteners that interlock with the fibres of the timber along the full length of the helix.
1984
The helical pitch is introduced through a clamping and twisting operation in whcih one end of a length of profiled wire is secured in a fixed position and the other end held and spun. The twisting forces work their way along the length of the wire to form the helix. The tightly twisted ends portions are discarded to leave a usable length of helixical wire having a pitch consistency that fluctuaties by less than 2mm.
2001
Thor Helical twisting die technology delivers patented helical wire product with 'precise pitch' accuracy to within 1mm per kilometre (0.001mm/m) to supersede earlier brands of helical wire anchors.
2001
This range of headed helical fasteners is ideal for use in fastening insulation layers to a comprehensive range of masonry and timber construction elements, combining high speed installation with excellent and consistent performance reliability.
2008
The new fixing system includes a helical fastener having a reduced diameter driving shank and a low-cost SDS setting tool having a reduced diameter hollow nose end. The setting tool holds the fastener in place and, when energised by an SDS roto-hammer drill, delivers impact blows to the end of the fastener, allowing the operator to keep both hands safely on his drill throughout the entire fastening process.
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Original Helical Fixings - Continuous improvement since ...
Original roll-profiled helical wire fasteners (and twisted tubular ties) are commercially produced under Licence.
Thor Helical development team designs and builds an energy efficient and zero waste twisting machinery, through which whole coils of wire are continuously forced to deliver consistent stress and pitch characteristics to tolerances that were not previously achievable.
Thor Helical develops helical fasteners having retaining heads or clips that offer great versatility when used to fix thin or friable layers.
Thor Helical introduces a new fastener and fastening system. The unique tie / tool arrangement increases productivity and reliability whilst alleviating the requirement for expensive and unweildy tooling.