ALEXANDRIA, Va., June 5 -- United States Patent no. 12,276,195, issued on April 15, was assigned to ROCBOLT TECHNOLOGIES (PTY) LTD. (Germiston, South Africa).

"Rock bolt assembly having an indicator" was invented by Werner Bellingham (Germiston, South Africa).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rock bolt assembly provides an indication of a coupling. The rock bolt assembly includes two shaft sections, namely inner and outer shaft sections. A coupler is configured to couple the two shaft sections together at proximate ends. An electrical conductor is insulated from the outer shaft section and extends from the dead end of the outer shaft section to the head at the live end of the outer shaft sectio...