Expansion dowel

Details Expansion dowel Expansion dowel

1977-08-15

1979-05-29

Holko, Thomas J.

85 79, F16B 1308

Patent

active

041563816

ABSTRACT:
An expansion dowel of the type anchored within a prepared borehole, consists of a dowel body, an expansion element and a separating member. The expansion element is defined by a pair of slots cut in the dowel body. The slots do not intersect leaving a web connecting the expansion element to the dowel body. When the dowel is inserted into the borehole, the separating member breaks the web freeing the expansion element. The expansion element is wedge-shaped as is the recess in the dowel body defined by the slots.

REFERENCES:
patent: 444524 (1891-01-01), Gallagher
patent: 922980 (1909-05-01), Vernon et al.
patent: 1225589 (1917-05-01), Cutting
patent: 2222338 (1940-11-01), Roberts
patent: 2287395 (1942-06-01), Reynolds
patent: 2349075 (1944-05-01), Cole
patent: 2474281 (1949-06-01), Ruiz
patent: 3312138 (1967-04-01), Cumming
patent: 3427919 (1969-02-01), Lerich
patent: 3802311 (1974-04-01), Ziegler

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