Breakaway sign post coupling
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United States of America Patent
Stats
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May 22, 1990
Grant Date -
N/A
app pub date -
Feb 10, 1989
filing date -
Feb 10, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A breakaway coupling to be interposed between a ground mounting post and a support post carrying a highway sign, barricade or similar highway appurtenance. The coupling has a horizontal plate on a pedestal which attaches to the mounting post and a horizontal plate on a support post mounting member which attaches to the support post. Bolts normally holding the plates together release upon vehicular impact. Use of a novel plate configuration, a gasket and roller cams enhance the structure.
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