Patents Assigned to Edgar Allen Engineering Limited
  • Patent number: 5749681
    Abstract: A high tensile steel strand for civil engineering applications comprises a core wire (11) and a ring of outer wires (12) arranged in a helical pattern around the core wire and in contact with the core wire. The number and the diameter of the outer wires in relation to the core wire are such that there are significant gaps (13) between adjacent outer wires. The strand is used as an anchorage in rock and a bonding agent between the strand and the rock penetrates gaps (13) to provide effective bonding. The strand is sufficiently flexible to be inserted in deep bores in rock even when surrounding space does not permit straight insertion of the strand.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: May 12, 1998
    Assignee: Edgar Allen Engineering Limited
    Inventors: Jeffrey Doidge, Terence Cassidy