Expansion bolt

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Including sleeve and distinct tapered expander

Reexamination Certificate

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Details

C411S055000

Reexamination Certificate

active

06846141

ABSTRACT:
The invention relates to an expansible anchor (10) for anchoring in a cylindrical drilled hole (40). The invention proposes constructing the expansible anchor (10) with a tubular basic anchor part (12), on which a hollow conical expansion portion (22) is formed by means of a forming procedure, on which expansion portion (22) an expansion sleeve (14) bent out of sheet metal is mounted. As a result of axial displacement of the expansion sleeve (14) on the expansion portion (22), the expansible anchor (10) becomes anchored in the drilled hole (40). The expansible anchor (10) exhibits subsequent expansion behaviour in the event of widening of the drilled hole (40), for example as a consequence of crack formation.

REFERENCES:
patent: 1601796 (1926-10-01), Gordon
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patent: 3178990 (1965-04-01), Teeple
patent: 3726181 (1973-04-01), Dickow et al.
patent: 4002100 (1977-01-01), Bucheli
patent: 4278006 (1981-07-01), Lobello
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patent: 4867610 (1989-09-01), Diffrient
patent: 4884931 (1989-12-01), Revol
patent: 5765979 (1998-06-01), Mader et al.
patent: 6547500 (2003-04-01), Cosenza et al.
patent: 25 20 115 (1976-03-01), None
patent: 33 43 016 (1985-06-01), None
patent: 195 38 898 (1997-04-01), None
patent: 198 15 177 (1999-10-01), None
patent: 445968 (1912-11-01), None
patent: 1 192 694 (1970-05-01), None
patent: 00 329 46 (2000-06-01), None

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