Patents Assigned to Aveng (Africa) Ltd.
  • Rock bolt
    Patent number: 7963725
    Abstract: A rock bolt (10) which includes An elongate tubular member (18), which is formed with an inlet (22) through which a pressurized fluid can pass, into an interior of the tubular member (18), thereby to expand the tubular member (18) in a radial direction, an elongate shank (12) with a first end (14) which is secured to the tubular member (18) and a second end (16), and an expansion unit (26) which has a wedge-shaped member (44) at the second end (16) of the shank (12).
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: June 21, 2011
    Assignee: Aveng (Africa) Ltd.
    Inventor: Stephen George Dawe