A steel structure adapted for the reinforcement of elastomeric members has steel elements containing a plurality of steel filaments at least one of which filaments is provided with first and second crimps. The first crimp lies in a plane that is substantially different from the plane of the second crimp....http://www.google.com.au/patents/US6311466?utm_source=gb-gplus-sharePatent US6311466 - Steel cord with waved elements
