Anchor bolt including elongated spreader wedge

Details Anchor bolt including elongated spreader wedge Anchor bolt including elongated spreader wedge

1981-05-13

1984-01-24

Smith, Gary L.

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

Having separate expander means

Relatively sliding wedge surfaces

411 79, 411 56, 405259, F16B 1304

Patent

active

044273274

ABSTRACT:
An axially elongated fastening element is made up of an anchor bolt and a spreader wedge each having a wedge surface. Initially the two parts are inserted in the unspread condition into a borehole. By providing relative movement in the axial direction between the wedge surfaces, the fastening element is anchored in the borehole. The wedge surfaces are divided into at least two portions each disposed at a different angle relative to the axis of the fastening element. The initial spreading action is effected when the portion of the wedge surfaces having smaller angles slide relative to one another.

REFERENCES:
patent: 1251566 (1918-01-01), Pigott
patent: 3680430 (1972-08-01), Cannon et al.
patent: 4275637 (1981-06-01), Herb et al.

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