Additive approach to ballistic and slag melting point control of azide-based gas generant compositions
CA 2076614 C · Owner: Autoliv Asp, Inc. · Inventors: Taylor, Robert D.; Huntsman, Lewis R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
Gas generant pyrotechnic compositions especially suitable for inflating vehicle occupant restraint systems with nitrogen gas are described. The compositions are comprised (in wt.%) of about 65-74% of an azide, preferably sodium azide; about 17-29.5% of iron oxide, preferably ferric oxide; and about 1.0- 6% metal nitrite or nitrate co-oxidizer preferably sodium, nitrate; to which base composition is added about 0.5-8% silica alumina, titania or mixtures thereof; up to 6% bentonite and up to 4% molybdenum disulfide. Preferred driver and passenger side formulations are disclosed. The compositions burn at a rate of from about 0.8 to 1.5 inches per second and have, excellent slag and clinker …
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 August 21, 1992 and granted March 25, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 21, 2014.
- 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.