Device for bonding expansion anchor sleeves in masonry or the like

Claim 1

IN A SUPPORTING STRUCTURE HAVING AN EXPOSED SIDE AND AN EXPANSION ANCHOR HOLE EXTENDING INWARDLY FROM SAID OPEN SIDE THEREOF, IN COMBINATION, A DEFORMABLE EXPANSION ANCHOR SLEEVE RECEIVED IN THE HOLE OF SAID SUPPORTING STRUCTURE AND HAVING A LEADING PORTION AND A SLOT EXTENDING FROM SAID LEADING PORTION TOWARD BUT SHORT OF THE OTHER END THEREOF; AND AN EXPENDABLE BONDING DEVICE INCLUDING AN ADHESIVE-CONTAINING CONTAINER RECEIVED IN AND SUBSTANTIALLY FILLING THE INTERIOR OF SAID SLEEVE, SAID CONTAINER HAVING A LEADING PORTION PROVIDED WITH A WEAKENED SPOT WHICH MAY BE DESTROYED IN RESPONSE TO INCREASING PRESSURE OF ADHESIVE SO THAT THE ADHESIVE MAY PENETRATE INTO THE SLOT OF SAID SLEEVE AND THEREUPON INTO THE MATERIAL SURROUNDING SAID HOLE, AND A PLUNGER SECURED TO SAID CONTAINER AND ARRANGED TO BE DRIVEN INTO SAID LEADING PORTION THEREOF TO DESTROY SAID WEAKENED SPOT AND TO CAUSE EXPLUSION OF ADHESIVE INTO THE MATERIAL OF THE SUPPORTING STRUCTURE TO BOND SAID SLEEVE THERETO, WHEREUPON SAID DEVICE MAY BE WITHDRAWN FROM THE SLEEVE SO THAT THE LATTER MAY RECEIVE A FASTENER.