Explosion barrier
CA 2387085 A1 · Owner: Crawford, John E. · Inventors: Crawford, John E.; Figge, Ward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A barrier for containing an explosion. The barrier is a structural panel (10) comprising a base sheet (12), a plurality of truncated polyhedral elements (14) secured to and projecting from the base sheet (12) and a face sheet (16) , covering and secured to the truncated apexes of the polyhedral elements (14). The face sheet (16) will separate from the polyhedral elements (14) to expose them in the event of an explosion. Each polyhedral element (14) is constructed to collapse in the event of an explosion is filled with a liquid, and has , openings (30) therein with closure devices that are openable or removable in response to the collapse of the polyhedral elements (14) caused by the …
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 October 26, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 26, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 26, 2022.
- 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.