Anchor for anchoring in a drilled hole in concrete via a joining

Details Anchor for anchoring in a drilled hole in concrete via a joining Anchor for anchoring in a drilled hole in concrete via a joining

1993-02-05

1994-09-06

Wilson, Neill R.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Including settable material

Adhesive encapsulated

411 55, 411930, 4052595, 4052596, F16B 1306, F16B 3902

Patent

active

053442687

ABSTRACT:
The anchor for anchoring in a drilled hole in concrete via a joining composition, includes a threaded bolt consisting of a straight shank portion having an expander cone at one end thereof to be inserted in the drilled hole and a threaded portion at the other end, the expander cone having an outer surface and an end face and widening toward the end face; an expandable sleeve arranged on the threaded bolt enclosing the expander cone and structured to be expanded by the expander cone and a plastic covering on the end face and the outer surface of the expander cone and an adjoining part of the straight shank portion. The complete plastic covering over the expander cone and the adjoining part of the straight shank portion ensures that the joining composition does not bond the expandable sleeve to the threaded bolt, thus hindering subsequent expansion of the expandable sleeve by the expander cone due to crack formation at the drilled hole.

REFERENCES:
patent: 2203178 (1940-04-01), Pierce
patent: 2994243 (1961-08-01), Langstroth
patent: 5076733 (1991-12-01), Frease
patent: 5082399 (1992-01-01), Frease et al.
patent: 5176481 (1993-01-01), Schiefer

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