Patents by Inventor Christopher R. Windsor

Christopher R. Windsor has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Rock bolt system and method of rock bolting
    Patent number: 5335736
    Abstract: A rock bolt system comprises an inner part (1) disposed within an outer part (10). The inner part comprises an elongated tube having an axial depression (2) and an internal pressure fluid receiving chamber (4) which is closed at both of its ends. A fluid inlet communicates with the fluid receiving chamber. The outer part (10) comprises an elongated tube having a longitudinal slot (12), which slot extends at least part way along the length of the outer part tube. In use, the rock bolt system is placed in an oversized borehole (20) and pressurized fluid applied to the fluid receiving chamber. This causes the device to expand laterally and engage the walls of the borehole.
    Type: Grant
    Filed: January 26, 1993
    Date of Patent: August 9, 1994
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventor: Christopher R. Windsor