Energy absorbing barrier
CA 1288985 C · Owner: Thompson, Marion L. · Inventors: Thompson, Marion L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An energy absorbing barrier (10) dissipating kinetic energy upon impact by a moving vehicle. The barrier comprises walls (16, 18, 20) defining a container (22) closed except for a fill opening to admit water. Various configurations of side walls are disclosed. The side walls are resiliently deformable to return to their original shape after being struck the, resilience, thickness and deformability of the walls tending to form a capture region (72) above and in advance of the vehicle tire to slow the tire and prevent it from climbing and vaulting the barrier.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted September 17, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 17, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.