Explosive device and method of use therefor
CA 1290976 C · Owner: Du Pont Canada Inc. · Inventors: Casey, Kenneth
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordNo Claude kit for weapons
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Abstract From the Canadian patent
TITLE, Explosive Device and Method of Use Therefor ABSTRACT OF THE DISCLOSURE, An explosive device is disclosed which is, particularly suitable for high energy applications e.g. priming blasting explosives, cutting cables and for secondary blasting. The device comprises an explosive material having an identation upon a surface thereof. The indentation which has a mouth, is substantially symmetrical about an axis perpendicular to the mouth. The cross-sectional area of the mouth is at least as great as any other crosssectional area, normal to the axis, within the indentation. The thickness of explosive surrounding the mouth is greater than the critical diameter of the explosive.
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 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
- 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.