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Traffic calming device

  • US 10,577,762 B2
  • Filed: 07/07/2016
  • Issued: 03/03/2020
  • Est. Priority Date: 07/13/2015
  • Status: Active Grant
First Claim
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1. A traffic calming device comprising a moveable obstacle and a retraction mechanism for moving the obstacle when a vehicle is brought into contact with the obstacle, wherein the retraction mechanism comprises a release system for moving the obstacle at a predetermined speed,wherein the predetermined speed is variable so that a user may set the predetermined speed in dependence on a speed limit,wherein the obstacle comprises a cradle for engaging with one or more wheels of the vehicle, wherein the cradle is engaged with the retraction mechanism, the retraction mechanism comprising at least one hydraulic cylinder, the cradle being adapted for pivotal movement relative to a surface upon which the wheel proceeds, wherein the cradle is engaged with the at least one hydraulic cylinder so that the pivoting movement of the cradle commensurate with the forward direction of the vehicle compresses the at least one hydraulic cylinder, the release system further comprising a release valve engaged with the at least one hydraulic cylinder so that the at least one hydraulic cylinder has a maximum rate of operation, and so that the pivoting movement of the cradle is limited by the maximum rate of operation of the at least one hydraulic cylinder andwherein the cradle includes first and second arms with a flat middle surface between the first and second arms.

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