Patent ID: 6474903
Filing Date: 2002-11-05
Classification: E01F

Abstract:
A portable tire-puncture apparatus for puncturing a vehicle tire, comprising:portable barrier-strip for communicating with a vehicle tire, said barrier-strip means comprising a plurality of generally linearly disposed adjacent barrier blocks, each barrier block having a top surface, a bottom surface, a first side and a second side; tire-puncture means disposed in the barrier-strip means, having an armed position for puncturing the tire and a retracted position for not puncturing the tire, said tire-puncture means comprising a rotatable shaft disposed in a first bore extending between the first side and the second side of each barrier block, and having at least one spike removably disposed in said rotatable shaft; control means communicating with the barrier-strip means for arming the tire-puncture means to the armed position and retracting the tire-puncture means to the retracted position; first hinge means for pivotally interconnecting the tire puncture means of adjacent barrier blocks, said first hinge means comprising a removable universal joint connecting the rotatable shafts of adjacent barrier blocks; and second hinge means integrally formed on the first side and second side of each of the plurality of barrier blocks for pivotally interconnecting adjacent barrier blocks, thereby allowing rotation of connected blocks relative to each other about a horizontal axis.