Couplings for sign posts and the like

Details Couplings for sign posts and the like Couplings for sign posts and the like

1980-12-01

1984-12-25

Kundrat, Andrew V.

Joints and connections

Including frangible component

40606, 29150, F16B 700

Patent

active

044900627

ABSTRACT:
A frangible coupling utilizable in a sign assembly is provided, formed of a web having a through-extending opening and a plurality of through-extending slits extending outwardly from the opening and defining first and second web portions which will separate under impact loading. The terminations of the slits are short of the end of the web and provide out-of-plane tearing stress concentration. The coupling may be readily manufactured in a variety of manners, such as being cast or even being capable of being stamped. A method of stamping the coupling from a metal plate (e.g. steel plate) is also provided.

REFERENCES:
patent: 3106989 (1963-10-01), Fuchs
patent: 3504460 (1970-04-01), Solberg
patent: 3521917 (1970-07-01), King
patent: 3738390 (1973-06-01), Luckenbill
patent: 3820906 (1974-06-01), Katt
patent: 3846030 (1974-11-01), Katt
patent: 3912404 (1975-10-01), Katt
patent: 3961642 (1976-06-01), Thomas et al.
patent: 4052826 (1977-10-01), Chisholm
patent: 4071970 (1978-02-01), Strizki
patent: 4236843 (1980-12-01), Chisholm

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