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Speed bumps for roadways

  • US 4,697,294 A
  • Filed: 09/20/1985
  • Issued: 10/06/1987
  • Est. Priority Date: 09/21/1984
  • Status: Expired due to Fees
First Claim
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1. A modular inclined ramp structure for mounting on a roadway surface, comprising:

  • a plurality of solid ramp plates, each having a flat platform section, a sloping section leading to the flat platform section and a rounded transitional section therebetween, each ramp plate being made of resilient, energy-absorbing material which deforms elastically when driven over and each ramp plate having a reinforcing and fixing strip extending along the sloping section, running parallel to a lowermost edge of the sloping section, each ramp plate being fixable to the roadway surface by means inserted through each ramp plate along the reinforcing and fixing strip;

    reflecting means embedded in the sloping section of each ramp plate;

    a plurality of solid spacer plates, each having a flat upper surface aligned with the platform sections of the ramp plates and being abuttable against any ramp plate at a side of the ramp plate opposite the lowermost edge and abuttable against other spacer plates along any edge, the ramp and spacer plates having blunt contact surfaces for abutting one another;

    a plurality of inserts for securing the ramp and spacer plates to one another, each of the ramp and spacer plates having recesses at corners of the abuttable contact surfaces, the recesses of abutted ramp and spacer plates forming composite recesses for receiving the inserts; and

    ,threaded means mountable through the inserts for attachment into the roadway surface, whereby a plurality of inclined ramp structures may be formed by interconnection of different numbers of the ramp plates and the spacer plates in different geometrical configurations and each lowermost edge and part of each sloping section adjacent each lowermost edge is substantially prevented from bending and deflecting upwardly when driven over.

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