Road structure – process – or apparatus – Traffic director – Yielding
Patent
1992-01-07
1994-02-22
Brittain, James R.
Road structure, process, or apparatus
Traffic director
Yielding
404 6, E01F 900, E01F 1300
Patent
active
052881644
ABSTRACT:
A vehicle barrier for positioning on a roadway or the like includes a support plate adapted for placement across a roadway, a plurality of tread supports formed in series on the support plate with a space between adjacent tread supports, a rod having a row of spikes attached thereto and being rotatably disposed across the support plate so that the spikes are movably received between respective spaced tread supports, a tensioning device for maintaining the row of spikes in a first, upwardly extending position and a device for lowering the row of spikes into a second position between the space tread supports. With this vehicle barrier, a vehicle approaching the barrier from one direction can cause the row of spikes in the first position to rotate downwardly to the second position when its tires impact a spike. But, the row of spikes are maintained in their first upwardly extended position by the tensioning device when impacted by a vehicle approaching from an unauthorized direction thereby puncturing the tires of that vehicle.
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Berenato, III Joseph W.
Brittain James R.
Connolly Nancy P.
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