Roadside energy absorbing barrier with improved fender panel fastener
CA 2239656 C · Owner: Energy Absorption Systems, Inc. · Inventors: Machado, John V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A roadside energy absorbing barrier includes energy absorbing elements interposed between diaphragms with fender panels mounted by, hinges to the diaphragms. The fender panels define longitudinally extending slots, and a fastener is mounted between adjacent fender panels. This fastener includes a bolt passing through an enlarged washer a slot in one, fender panel and an adjacent fender panel. A nut is positioned on the bolt inwardly of the fender panels, and a coil spring is mounted on the bolt and reacts against the nut and the fender panels to bias the first fender panel toward the second fender panel while permitting a selected separation therebetween.
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
- Filed June 4, 1998 and granted August 21, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 4, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 2020.
- 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.