Expanding masonry attachment plug

Details Expanding masonry attachment plug Expanding masonry attachment plug

1974-01-07

1976-02-10

Britts, Ramon S.

85 83, F16B 1310

Patent

active

039371220

ABSTRACT:
The specification describes an expanding masonry attachment plug, whose plug head has a wide insertion hole and whose shank, provided with a through hole, is divided by longitudinal slits into expanding segments. The latter join at the far end to form a plug foot. To enable use of the plug both in dense masonry material and also in light weight building materials the plug has the following features. Internally the expanding segments delimit a guide hole adapted to bring about expansion, with a diameter which is less than the diameter of the appropriate screw. The plug foot consists of a closed sleeve adapted to bring about a bending outwards of the expanding segments by axial compression or clamping of the shank, with a through hole for the cutting of a tension thread on complete driving of the screw into position.

REFERENCES:
patent: 2918841 (1959-12-01), Poupitch
patent: 3143916 (1964-08-01), Rice
patent: 3174387 (1965-03-01), Fischer
patent: 3280875 (1966-10-01), Fischer
patent: 3283642 (1966-11-01), Ott
patent: 3516324 (1970-06-01), Berner
patent: 3522756 (1970-08-01), Von Wolff
patent: 3735665 (1973-05-01), Mortensen

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