Vehicular access control device

Details Vehicular access control device Vehicular access control device

1995-06-08

1996-07-23

Bagnell, David J.

Road structure, process, or apparatus

Traffic steering device or barrier

404 11, 49 49, E01F 1300

Patent

active

055383580

ABSTRACT:
A ramped barrier is provided to control movement of motorized vehicles into designated areas. The ramped barrier can be mounted on a road, parking lot, driveway or other surface. The barrier is provided with a series of parallel tines secured to a rotating shaft. The tines form a tire piercing barrier against unauthorized traffic. The shaft is housed within the barrier and adjacent to the top wall of the barrier. The tines, when retracted, extend from the shaft to about the outer edge of one ramped side of the barrier. The tines can be positioned to project upwardly against vehicular traffic in one or two directions.

REFERENCES:
patent: 1563637 (1925-12-01), Lundblad
patent: 2762145 (1956-09-01), Rupe
patent: 3295255 (1967-01-01), Russo
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patent: 4367975 (1983-01-01), Tyers
patent: 4918740 (1959-12-01), Smith
patent: 5192158 (1993-03-01), Bailey et al.
patent: 5288164 (1994-02-01), Nasataka

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