Impact dowel with expanding sleeve and spreading element

Details Impact dowel with expanding sleeve and spreading element Impact dowel with expanding sleeve and spreading element

1977-02-15

1978-05-09

Britts, Ramon S.

85 70, F16B 1304

Patent

active

040880540

ABSTRACT:
An impact dowel for insertion into a prepared bore hole in receiving material consists of an axially extending expansion sleeve and a spreading element insertable into the bore in the sleeve. The expansion sleeve and spreading element each have a first end and an oppositely directed second end with the first end being inserted first into the bore hole. The bore in the expanding sleeve has a pair of axially spaced restrictions which limit the axial displacement of the spreading element through the bore. The second end of the sleeve has an outwardly directed shoulder and a connecting section adjacent to the shoulder. The connecting section absorbs substantially only tensile forces.

REFERENCES:
patent: 2324142 (1943-07-01), Eklund
patent: 2542144 (1951-02-01), Kearns
patent: 3044340 (1962-07-01), Luhm
patent: 3198058 (1965-08-01), Barry
patent: 3471183 (1969-10-01), Fischer
patent: 3482482 (1969-12-01), Le Sage
patent: 3640326 (1972-02-01), Brown
patent: 3662644 (1972-05-01), Flesch et al.
patent: 3937122 (1976-02-01), Riedel

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