Expansion dowel

Details Expansion dowel Expansion dowel

1996-07-25

1999-08-03

Green, Brian K.

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

Having separate expander means

Including sleeve and distinct tapered expander

411 54, 411 57, F16B 1306

Patent

active

059316195

ABSTRACT:
An expansion dowel is formed of an axially extending expansion sleeve (2) with a through bore (9) and an expansion region (3) having at least one axially extending slot (5), and an expanding member (6) axially displaceable by axially directed blows in the through bore from an initial position to an end position in which the expansion region (3) is expanded. The through bore (9) has an inside surface (4) of the expansion region (3) adjacent to an envelope or outside surface (7) of the expanding member (6) in the end position with the radius of curvature (a) of the inside surface (4) basically the same as the radii of curvature of the envelope surface (7) of expanding member (6).

REFERENCES:
patent: 3022701 (1962-02-01), Potruch
patent: 3843302 (1974-10-01), Petzetakis
patent: 3848506 (1974-11-01), Zifferer
patent: 3921496 (1975-11-01), Helderman
patent: 4634326 (1987-01-01), Fischer
patent: 4673321 (1987-06-01), Herb et al.
patent: 4898505 (1990-02-01), Froehlich
patent: 4919579 (1990-04-01), Miyanaga

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