Expansible plug for anchoring in a drilled hole having an underc

Details Expansible plug for anchoring in a drilled hole having an underc Expansible plug for anchoring in a drilled hole having an underc

1996-01-30

1997-03-11

Wilson, Neill R.

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

Having separate expander means

Including sleeve and distinct tapered expander

411 60, 411908, F16B 1306

Patent

active

056094531

ABSTRACT:
An expansible plug for anchoring in a drilled hole having an undercut, comprises a threaded bolt having a leading end with an expander cone at the leading end, an expansible sleeve having a leading end and a rear end and provided with a plurality of longitudinal slits starting from the leading end of the expansible sleeve and extending for a part of a length of the expansible sleeve. The expansible sleeve has a cylindrical portion arranged at the leading end of the expansible sleeve, and also an annular groove adjoining the cylindrical portion and tapering toward the rear end of the expansible sleeve. The groove is bounded in a region of the slits by a rounded portion. The expansible sleeve is composed of a fiber-reinforced, high-strength plastic material.

REFERENCES:
patent: 4763396 (1988-08-01), Fischer
patent: 4818163 (1989-04-01), Bereiter et al.
patent: 4984945 (1991-01-01), Bergner
patent: 5013192 (1991-05-01), Scott

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