Expansion dowel

Details Expansion dowel Expansion dowel

1997-05-29

1998-08-11

Dorner, Kenneth J.

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

Having separate expander means

Including sleeve and distinct tapered expander

411 60, 411 55, 411 57, 411 71, F16B 1304

Patent

active

057918465

ABSTRACT:
An expansion dowel (1) includes an axially extending cylindrical sleeve (2) and an expanding body (3). The sleeve (2) has an axially extending bore (5) and an axially extending expansion section (6) with axially extending slits. The bore (5) tapers inwardly to the leading end of the sleeve in the expansion section (6). The expanding body (3) is received in and expands the expansion section (6). Circumferentially and axially extending approximately V-shaped grooves 9 are formed in the outside surface of the expansion section and/are spaced apart by circumferentially and axially extending cylindrical surface sections (8). The approximately v-shaped grooves have flanks defining an angle (.alpha.) in the range of approximately 120.degree. to 140.degree..

REFERENCES:
patent: 1000715 (1911-08-01), Caywood
patent: 1248004 (1917-11-01), Pleister
patent: 1248008 (1917-11-01), Pleister
patent: 1288177 (1918-12-01), Pleister
patent: 3808938 (1974-05-01), Chromy
patent: 4235151 (1980-11-01), Udert et al.
patent: 4711232 (1987-12-01), Fischer et al.
patent: 4893973 (1990-01-01), Herb
patent: 5224805 (1993-07-01), Moretti et al.
patent: 5496006 (1996-03-01), Kulka et al.

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