Road structure – process – or apparatus – Traffic steering device or barrier
Patent
1978-08-30
1980-01-15
Byers, Jr., Nile C.
Road structure, process, or apparatus
Traffic steering device or barrier
256 131, 256 1, 116 63R, 40606, E01F 1300
Patent
active
041836952
ABSTRACT:
A plurality of signboards on a pair of legs are pivotally connected to a base and held in a vertical position by shear pins adapted to shear upon a predetermined impact force being directed against the signboards from either direction thereby allowing the legs to pivot to a collapsed horizontal position.
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