Composition and process for inflating a safety crash bag
CA 2014603 C · Owner: Automotive Systems Laboratory, Inc. · Inventors: Wilson, Michael A.; Poole, Donald R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
Composition and process for inflating an automobile or aircraft safety crash bag comprising igniting at elevated pressure a pyrotechnic material comprising at least one tetrazole or triazole compound containing hydrogen in the molecule, at least one oxygen containing oxidizer compound, and at least one metal oxide to generate a gas which is admixed with air by means of an aspirating venturi and thereafter utilized to inflate the crash bag.
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.
Why it's free to use
- Filed April 12, 1990 and granted April 5, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 12, 2012.
- 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.