Road structure – process – or apparatus – Traffic steering device or barrier
Patent
1994-07-13
1996-04-16
Britts, Ramon S.
Road structure, process, or apparatus
Traffic steering device or barrier
256 1, E01F 1300
Patent
active
055075886
ABSTRACT:
A portable barrier strip having retractable tire-puncture means for puncturing a vehicle tire. The tire-puncture means, such as spikes, have an armed position for puncturing a tire and a retracted position for not puncturing a tire. The strip comprises a plurality of barrier blocks having the tire-puncture means removably disposed in a shaft that is rotatably disposed in each barrier block. The shaft removably and pivotally interconnects the plurality of barrier blocks. Actuation cables cause the shaft to rotate the tire-puncture means to the armed position for puncturing a vehicle tire and to the retracted position for not puncturing the tire. Each tire-puncture means is received in a hollow-bed portion of its respective barrier block when in the retracted position. The barrier strip rests stable in its deployed position and substantially motionless as a tire rolls thereon and over. The strip is rolled up for retrieval, portability, and storage purposes, and extended and unrolled in its deployed position for use.
REFERENCES:
patent: 3838760 (1974-10-01), Selby, Jr.
patent: 4101235 (1978-07-01), Nelson
patent: 4382714 (1983-05-01), Hutchinson
patent: 4995756 (1991-02-01), Kilgrow et al.
patent: 5123774 (1992-06-01), Dubiel
patent: 5253950 (1993-10-01), Kilgrow et al.
patent: 5330285 (1994-07-01), Greves et al.
Barker Stacey G.
Marts Donna J.
McQueen Miles A.
Britts Ramon S.
Lockheed Idaho Technologies Company
O'Connor Pamela A.
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