Threaded bolt assembly to be anchored in a drilled hole with an

Details Threaded bolt assembly to be anchored in a drilled hole with an Threaded bolt assembly to be anchored in a drilled hole with an

1990-06-29

1991-07-16

Wilson, Neill R.

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

Including settable material

Adhesive encapsulated

411 55, 405261, F16B 3902

Patent

active

050320467

ABSTRACT:
A threaded bolt assembly adapted to be anchored in a drilled hole formed in a concrete part and having an undercut expanding towards a bottom of the drill hole, with a hardening compound mass. The threaded bolt assembly includes a threaded bolt having an internal bore extending from a leading end face of said threaded bolt and having an internal thread, and a plurality of expansible segments formed in a region of the internal bore by a plurality of longitudinally extending slots. The threaded bolt assembly further includes an expander bolt having a threaded portion threadably received within the internal bore of the threaded bolt, an expander cone extending from the threaded portion. A projection extends from an end face of the expander cone.
A method for anchoring such a threaded bolt assembly in a hole with an undercut drilled in a concrete part, is also described.

REFERENCES:
patent: 4475329 (1984-10-01), Fischer
patent: 4904134 (1990-02-01), Fischer
patent: 4943195 (1990-07-01), Fischer
Europaische Patentanmeldung, Inv.: Artur Fischer, 87111741.2, filed Aug. 13, 1987.
Europaische Patentanmeldung, Inv.: Artur Fischer, 86106085.3, filed May 2, 1986.

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