Expansion dowel assembly

Details Expansion dowel assembly Expansion dowel assembly

1987-12-22

1989-06-20

Sakran, Victor N.

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

Headed fastener element with nut, washer, securing means or cap

Securing means pivotable about axis transverse to fastener...

411 21, 411913, F16B 2100

Patent

active

048405272

ABSTRACT:
An expansion dowel assembly includes a sleeve-like support bearing incorporating load engagement surfaces, and annular disks displaceably held on the support bearing by a tension member for displacement between a radially inwardly displaced position and a radially outwardly displaced position. The annular disks are formed of a spring-like material. The tension member clamps the disks in the radially inwardly displaced position in the form of a hollow cone. When the clamping force on the disks is removed, because of their spring-like characteristic, they move into the radially outwardly displaced position flattened out from the hollow cone configuration. A load can be applied to the support bearing at the load engagement surfaces.

REFERENCES:
patent: 1247621 (1917-11-01), Bennett
patent: 1370319 (1921-03-01), Kennedy
patent: 3241420 (1966-03-01), Passer
patent: 3304828 (1967-02-01), Karhu
patent: 3312138 (1967-04-01), Cumming
patent: 3316953 (1967-05-01), Fransson et al.
patent: 3599693 (1971-08-01), Bucheli
patent: 4083162 (1978-04-01), Regan et al.
patent: 4143581 (1979-03-01), Smith et al.
patent: 4557653 (1985-12-01), Hill
patent: 4673320 (1987-06-01), Froehlich

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