Cartridge case and cartridge arrangement
CA 1197724 A · Owner: Aai Corporation · Inventors: Hebert, John R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
A cartridge case and cartridge arrangement in which a base is joined along an annular intermating chevron-shaped joint with a sleeve. In the illustrated and preferred embodiment the base is metal and the sleeve is glass-fiber-reinforced plastic. The case has a propellant, projectile and a per-, cussive primer. A plurality of circumferentially spaced vent holes are formed in the plastic sleeve along a portion of the chevron joint as an aid to reducing excessive interface friction loads at the chevron joint during firing of the cartridge. A less preferred modification is disclosed in which the base is formed of plastic material or a composite glass-plastic or other composite plastic material, …
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 December 10, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 10, 2002.
- 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.