Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Having securing element projecting through aperture in sleeve
Patent
1984-03-27
1986-09-30
Smith, Gary L.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Having securing element projecting through aperture in sleeve
411 60, 411 65, 405259, F16B 1304
Patent
active
046144714
ABSTRACT:
An expansion anchor is used in a hole in a receiving material where the hole is undercut. The expansion anchor includes an axially elongated anchor sleeve containing slots extending in the axial direction. Expansion interlock members are radially displaceably mounted in the slots. A fastening bolt can be threaded into the sleeve so that it radially displaces and secures the interlock members in the undercut portion of the hole. Each interlock member has a shaped surface facing radially inwardly in the sleeve and the shaped surface is contacted by the fastening bolt as it is moved into the sleeve. The trailing end of the shaped surface is formed so that it is not contacted by the fastening bolt as the bolt is moved through the sleeve.
REFERENCES:
patent: 282501 (1883-08-01), Cornell
patent: 843271 (1907-02-01), Hanlon
patent: 929979 (1909-08-01), Pleister
patent: 1021794 (1912-04-01), Pleister
patent: 4263833 (1981-04-01), Loudin et al.
Hilti Aktiengesellschaft
Smith Gary L.
Wilson Neill
LandOfFree
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