Patents Assigned to Alminco Pty Ltd.
  • Publication number: 20110070035
    Abstract: The present invention relates to self drilling rock bolting. In particular, the invention concerns both a drilling apparatus for rock bolting, and a rock bolt for use with the drilling apparatus. The drilling apparatus comprises within it a fluid injector having an upper part that mates with a self-drilling rock bolt for boring a hole. The injector includes three fluid inlets, three fluid outlets in the upper part, and three fluid conduits extending from respective inlets to respective outlets. The self drilling rock bolt comprises an elongate body having a leading end with a cutting tip, and around the tip a thread with a coarse pitch. The bolt also has a trailing end with an integral collar for fluid connection to a channel that extends axially through the body of the rock bolt to the leading end. Above the collar is a thread with a fine pitch. In other aspects the invention concerns a system comprising the drilling apparatus in combination with a rock bolt and a method for rock bolting using the system.
    Type: Application
    Filed: December 15, 2008
    Publication date: March 24, 2011
    Applicant: Alminco Pty Ltd.
    Inventor: Di Pietro Ricardo