Patents Assigned to Roxbury Limited
  • Structural beams
    Patent number: 5526623
    Abstract: A pre-cast reinforced concrete structural beam comprises an upstanding web (136) and at least an inwardly directed flange (138) at the base of the web, the face of the web which is innermost in use and/or the upper face of the flange having surface irregularities (236,140) formed therein into which a cast in situ floor slab can penetrate to form a mechanical lock with the beam.
    Type: Grant
    Filed: February 14, 1995
    Date of Patent: June 18, 1996
    Assignee: Roxbury Limited
    Inventor: Roger A. Bullivant