Bolt anchor especially for use in hard materials

Details Bolt anchor especially for use in hard materials Bolt anchor especially for use in hard materials

1981-11-03

1984-05-01

Britts, Ramon S.

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

Having separate expander means

Including sleeve and distinct tapered expander

411 74, F16B 1310

Patent

active

044458126

ABSTRACT:
An anchor which is internally threaded for securing a bolt within a ledged hole in a hard material. The upper portion of the anchor has longitudinal slits dividing the top of the anchor into circumferentially spaced segments having a shape such that the segments can be bent outwardly. The outermost portion of a segment has a tip for engaging a portion of the ledge to prevent anchor rotation. A tubular body placed immediately above the outwardly bent segments provides lateral support for a bolt secured by the anchor and applies pressure against the segments, helping keep the anchor in place.

REFERENCES:
patent: 1031462 (1912-07-01), Paine
patent: 2760399 (1956-08-01), Rea
patent: 2771746 (1956-11-01), Fischer et al.
patent: 3874264 (1975-04-01), Polos

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