Fastening element assembly

Details Fastening element assembly Fastening element assembly

1979-07-02

1981-06-30

Britts, Ramon S.

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

Having separate expander means

Relatively sliding wedge surfaces

411 79, 411 72, F16B 1304

Patent

active

042756375

ABSTRACT:
A fastening element assembly for insertion into a prepared borehole is made up of a tie bolt and an expanding wedge. The tie bolt has a C-shaped flange formed on its trailing end which projects radially and circumferentially from the tie bolt. The projecting ends of the flange form a guide for the expanding wedge as the wedge is driven into a borehole in converting the assembly from its unspread condition into locked engagement within the borehole. Preferably, the circumferential surface of the tie bolt and the expanding wedge each form part of a circle. In the unspread condition, the circumferential surfaces of the parts of the tie bolt and expanding wedge disposed in surface contact with one another, form a circle.

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patent: 1400248 (1921-12-01), Thomas
patent: 1993749 (1935-03-01), Pleister
patent: 2362969 (1944-11-01), Boelter
patent: 2498627 (1950-02-01), Hallock
patent: 2748594 (1956-06-01), Edwards
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patent: 3216306 (1965-11-01), Taylor
patent: 3333499 (1967-08-01), Rudd
patent: 3427919 (1969-02-01), Lerich
patent: 3518915 (1970-07-01), Gutshall
patent: 3680430 (1972-08-01), Cannon et al.

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