Expansible plug to be percussion anchored in a borehole that tap

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Frangible member

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Details

411 60, F16B 1304, F16B 1306

Patent

active

049681990

ABSTRACT:
An expansible plug to be percussion anchored in a borehole that tapers outward at an inner end thereof comprising an expansible sleeve, expansible segments arranged at an expandable end of the expansible sleeve, an expander member for penetrating into a converging inner bore of the expansion sleeve to expand the expansible segments, and at least one spacing element arranged at an end side of the expansible segments.

REFERENCES:
patent: 4402637 (1983-09-01), Seghezzi et al.
patent: 4673320 (1987-06-01), Froehlich
patent: 4696423 (1987-09-01), Ryan

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