Expansion dowel with sleeve and expansion member

Details Expansion dowel with sleeve and expansion member Expansion dowel with sleeve and expansion member

1995-12-29

1997-05-13

Johnson, Blair

Joints and connections

Member ends joined by inserted section

Expansible section

403 2, 411 39, 411 40, 411 60, F16B 1304

Patent

active

056285795

ABSTRACT:
The expansion dowel includes an expansion sleeve (1) and an expanding member (5). The expansion sleeve 1 is provided with a bore (2) tapering in the setting direction as well as with open ended longitudinal slots (3). The expanding member (5) has a blind bore (6) open towards the setting side and has a lug (7) projecting from same at its opposite end, wherein the cross-sections of lug (7) and blind bore (6) are matched in such a way to one another, that a rated break point or failure point is formed. The force dependent response of this rated break point leads to a force dependent expansion while maintaining the driving or advance travel (X).

REFERENCES:
patent: 2402287 (1946-06-01), Kearns
patent: 3201166 (1965-08-01), Boutin
patent: 3340762 (1967-09-01), Bennett
patent: 3765295 (1973-10-01), Ptak
patent: 4085651 (1978-04-01), Koscik
patent: 4109556 (1978-08-01), Vollmer et al.
patent: 4235151 (1980-11-01), Udert et al.
patent: 4402637 (1983-09-01), Seghezzi et al.
patent: 4968199 (1990-11-01), Haage et al.

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