Expansion bolt assembly

Details Expansion bolt assembly Expansion bolt assembly

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

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