SLEEVE ANCHOR

摘要

A sleeve bolt (A) for insertion in a hole delimited by a wall comprises a threaded fastener (10) and an expansion sleeve (12). The threaded fastener (10) has a stem (14) that includes a proximal cylindrical shank (16) and a distal threaded section (18). The shank (16) has substantially the diameter of the hole and defines at a distal end thereof a conical expander portion (20). The expansion sleeve (12) comprises a distal threaded member (26) and a proximal expansion member (28), the threaded member (26) being threadably engaged to the threaded section (18) of the stem (14). The expansion member (28) includes anchor legs (32) each having a proximal end (38) adapted, upon axial displacement of the expansion sleeve (12) towards the shank (16) resulting from a rotation of the stem (14), to engage the conical expander portion (20) such as to expand the proximal ends (38) of the anchor legs (32) of the expansion member (28) outwardly into engagement with the wall. The expansion member (28) fractionally engages the wall upon introduction of the stem (14) in the hole.