Anchor bolt

Details Anchor bolt Anchor bolt

1992-01-06

1993-01-19

Wilson, Neill R.

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

Having separate expander means

Made up of plural expansible segments or sections

411 55, 411 60, F16B 1304, F16B 1306

Patent

active

051802643

ABSTRACT:
An anchor bolt comprising a threaded stem and a head at one end of the stem; a tubular, hard rubber sleeve held on the stem by a retaining collar nut has a deeply-dished metal washer located on the stem between the head and the sleeve nut with its open end directed towards the sleeve. The dished washer preferably has axial grooves extending from its periphery towards the centre. When the bolt is set, the dished washer is distorted by compression to undercut the hole and the rubber sleeve cooperates with the stem and the walls of the hole to give a very high pull-out resistance.

REFERENCES:
patent: 2147357 (1939-02-01), Scholtes
patent: 3468211 (1969-09-01), Suan
patent: 4147458 (1979-04-01), Elders
patent: 4810144 (1989-03-01), Martelli

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