Anchor bolt with expansion sleeve

Claim 1

AN ANCHOR BOLT COMPRISING A BOLT PORTION, AN EXPANSION SLEEVE DISPOSED IN OUTER CONCENTRIC RELATION ON SAID BOLT PORTION, SAID EXPANSION SLEEVE BEING DEFINED BY A PAIR OF TUBULAR WEDGING SECTIONS HAVING ADJACENT END FACES INCLINED AT COMPLEMENTARY WEDGING ANGLES WITH THE END FACES INTERSECTING THE INNER END SURFACE OF SAID EXPANSION SLEEVE SO AS TO FORM A CIRCUMFERENTIAL INTERRUPTION AT THE INNER END OF SAID SLEEVE WHEREBY SAID TUBULAR WEDGING SECTION MAY BE CIRCUMFERENTIALLY EXPANDED, A PAIR OF OUTER AND INNER END COMPRRESSION MEMBERS ARRANGED IN AXIALLY SPACED RELATION TO SAID BOLT PORTION WITH SAID EXPANSION SLEEVE DISPOSED BETWEEN SAID END COMPRESSION MEMBERS, SAID END COMPRESSION MEMBERS BEING AXIALLY MOVABLE IN RELATION TO ONE ANOTHER AGAINST OPPOSITE ENDS OF SAID EXPANSION SLEEVE IN RESPONSE TO TIGHTENING OF SAID OUTER END COMPRESSION MEMBER, AND SAID INNER END COMPRESSION MEMBER BEING DIMENSIONED TO CIRCUMFERENTIALLY EXPAND SAID EXPANSION SLEEVE AND SIMULTANEOUSLY TO CAUSE RELATIVE SLIDING MOVEMENT BETWEEN THE END FACES OF SAID WEDGING SECTIONS.