Expansion anchor with positioning projection and stopper member

Details Expansion anchor with positioning projection and stopper member Expansion anchor with positioning projection and stopper member

1995-07-10

1998-03-10

Cuomo, Peter M.

Buckles, buttons, clasps, etc.

Independent, headed, aperture pass-through fastener

411508, 24297, A44B 1700

Patent

active

057247099

ABSTRACT:
An expansion anchor to be anchored in a hole of one member to connect thereto another member includes a head to abut a surface of the one member. A shaft extends from the head to be inserted through the hole in the one member. The shaft has extending therefrom fins that are deflectable toward the shaft upon insertion of the fins with the shaft into a hole and that are resiliently expandable away from the shaft when the fins have passed through the hole. Thus, the fins abut the opposite surface of the one member to prevent removal of the anchor from the hole. At least one stopper member is positioned relative to the shaft to cooperate with an inner edge of the hole to maintain a desired position of the shaft laterally relative to the hole. The fins have respective projections dimensioned such that, when the fins have passed through the hole, the projections extend into the hole and cooperate with the inner edge thereof to maintain the desired lateral position. The stopper member and the projections are located at different, non-overlapping positions relative to the shaft.

REFERENCES:
patent: 3776092 (1973-12-01), Seckerson
patent: 3909883 (1975-10-01), Fegen
patent: 4422222 (1983-12-01), Notoya
patent: 4470178 (1984-09-01), Matsui
patent: 4635326 (1987-01-01), Yagi
patent: 4917340 (1990-04-01), Juemann et al.
patent: 4927287 (1990-05-01), Ohkawa et al.
patent: 5011356 (1991-04-01), Fernandez
patent: 5046223 (1991-09-01), Kraus
patent: 5143500 (1992-09-01), Schuring et al.
patent: 5191513 (1993-03-01), Sugiura et al.
patent: 5217337 (1993-06-01), Junemann et al.

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