Shaped charge with wave shaping lens
CA 2182408 C · Owner: Chawla, Manmohan S. · Inventors: Chawla, Manmohan S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
An improved shaped charge for generating a jet. A lens shaped waveshaper is positioned within the explosive material of a shaped charge to modify the shape of the divergent detonation wave into a planar wave or a converging wave. The waveshaper is formed with a low sound speed material having a high index of refraction. By reshaping the detonation wave the acceleration of the shaped charge liner is increased and the penetration depth and hole size of the jet can be increased. The shaped charge operates more efficiently thereby requiring less explosive material than a conventional shaped charge.
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 July 26, 1996 and granted October 19, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 26, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 26, 2018.
- 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.