Rock anchor

Claim 1

AS AN ARTICLE OF MANUFACTURE, ANCHORING MEANS FOR A CONCRETED MASS OF STONY MATERIAL IN WHICH A DRILLED HOLE IS FORMED, SAID ANCHORING MEANS COMPRISING A TIE ROD, A CONE-SHAPED MEMBER MOUNTED AT THE INNER END OF THE TIE ROD AND ABUTTING A SECURING MEANS AT THE INNER END OF THE TIE ROD, SHELL MEANS COMPLEMENTALLY FORMED TO THE CONE-SHAPED MEMBER, DETACHABLE TIGHTENING MEANS COMPRISING DETACHABLE TUBULAR MEANS ABUTTING THE OUTER PERIPHERAL FACE OF THE SHELL MEANS AND POSITIONED AXIALLY WITH RESPECT TO THE TIE ROD, WASHER MEANS ABUTTING THE DETACHABLE TUBULAR MEMBER, AND DETACHABLE SECURING MEANS COMPLEMENTALLY FORMED TO THE OUTER THREADED END OF THE TIE ROD, SAID SHELL MEANS AND SAID DETACHABLE TUBULAR MEMBER HAVING A DIAMETER LESS THAN THAT OF THE DRILLED HOLE WHEREBY THE ANCHORING MEANS IS ADAPTED TO BE POSITIONED WITHIN THE DRILLED HOLE, AND UPON SAID OPERATOR-OPERATED DETACHABLE SECURING MEANS BEING AXIALLY MOVED WITH RESPECT TO THE AXIS OF THE TIE ROD, THE DETACHABLE TUBULAR MEMBER FORCES THE SHELL MEANS INTO THE CONTIGUOUS PERIPHERAL WALL OF THE DRILLED HOLE AS THE SHELL MEANS IS FORCED AXIALLY WITH RESPECT TO THE CONESHAPED MEMBER, AND UPON DETACHMENT OF SAID DETACHABLE TIGHTENING MEANS INCLUDING SAID DETACHABLE SECURING MEANS, THE WASHER AND THE DETACHABLE TUBULAR MEMBER, THE TIE ROD IS AFFIXED WITHIN THE DRILLED HOLE AND SUPPORTED BY THE CONE-SHAPED MEMBER AND SHELL MEANS.