Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Including sleeve and distinct tapered expander
Patent
1986-07-14
1987-10-27
Wilson, Neill
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Including sleeve and distinct tapered expander
411 45, 411 21, F16B 1306
Patent
active
047026561
ABSTRACT:
An expansion bolt assembly for use in boreholes with an annular undercut adjacent the base of the boreholes includes an axially elongated anchor bolt, a support sleeve laterally enclosing the anchor bolt with annular segments formed on the support sleeve, and an expansion sleeve to be inserted between the anchor bolt and the support sleeve. The annular segments are displaced radially outwardly by the expansion sleeve into the undercut in the borehole. The annular segments extend radially outwardly from the outside surface of the support sleeve. During the expansion procedure the outer surface of the support sleeve is pressed against the surface of the borehole.
REFERENCES:
patent: 1031462 (1912-07-01), Paine
patent: 2316918 (1943-04-01), Wallace
patent: 3269251 (1966-08-01), Bass
patent: 4293259 (1981-10-01), Liebig
patent: 4315708 (1982-02-01), Leibig
patent: 4316689 (1982-02-01), Velasco
patent: 4405272 (1983-09-01), Wollar
patent: 4579473 (1986-04-01), Brugger
Hilti Aktiengesellschaft
Wilson Neill
LandOfFree
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