Static structures (e.g. – buildings) – Frangible section or means
Patent
1991-05-08
1992-06-30
Ridgill, Jr., James L.
Static structures (e.g., buildings)
Frangible section or means
52297, 404 10, 403 2, 403363, E04H 1232, F16B 700
Patent
active
051251949
ABSTRACT:
A sign post constructed of an upper channel section nested with a lower channel section at a frangible joint designed so when the sign post is struck by a vehicle, failure of the joint will occur in a predictable and consistent manner. The channel sections are preferably formed of stock channel material having a transverse cross-section in the general shape of a hat, including a longitudinally extending flat center web and outwardly divergent side walls. When the channel sections are nested together, the side walls of adjoining sections are in contact with one another, while the web portions remain spaced apart. In the present invention, the channel sections are connected together with a fastener in combination with a spacer that is engaged between the web portions to provide a reliable and strong breakaway connection.
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Lambert Dennis H.
Marion Steel Company
Ridgill, Jr. James L.
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