Patents Assigned to Johnson Hi-Tech (Australia) Pty.
  • Modular explosives cartridge and novel spider construction
    Patent number: 7210409
    Abstract: A modular explosives cartridge comprises a tubular body having lockable coupling members secured on opposite ends thereof to form a bayonet coupling between opposite ends of respective cartridges to form an elongate tubular explosives cartridge. The lockable coupling members each include a sealing membrane to form a sealed closure at opposite ends of the tubular body, the sealing membranes being pierced during coupling to form a continuous column of explosive composition within said elongate tubular cartridge.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: May 1, 2007
    Assignee: Johnson Hi-Tech (Australia) Pty.
    Inventor: Richard John Johnson