Thermally initiated mechanically fired device for providing protection against slow cook-off
CA 1308921 C · Owner: Dolan, Cyril F. · Inventors: Dolan, Cyril F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
Slow cook-off protection for rocket motors is achieved through the use of a slow cook-off trigger mechanism (10) in which a mechanical response is thermally initiated. A metallic housing (12) contains and is thermally coupled to a bimetallic snap action disc spring (14). A firing pin (24) is connected to the disc spring and telescopically guided by the housing toward an explosive booster charge (40). The booster charge is coupled in a conventional manner to a linear shaped charge (52). The linear shaped charge is disposed adjacent to the rocket motor case in order to cut a stress riser in the casing when activated. The circular bimetallic spring is designed to snap between a first and …
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
- Granted October 20, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 20, 2009.
- 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.