Muzzle loading gun and adaptor
CA 2202096 C · Owner: Johnston, Kenneth E. · Inventors: Johnston, Kenneth E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
An adaptor (10) which allows a standard cartridge firing action to be used with a black powder muzzle loading gun (100) is described. The adaptor includes an insert (12) and a nipple (16) and is configured to be inserted into the barrel (108) of the gun adjacent the receiver (104). In use a, standard rifle cartridge casing (150) with a wall (150A) and with a head (150B) at one end containing a primer (152) is loaded into the receiver of the gun. Next the cartridge casing is, moved into the end (108A) of the barrel such that the casing extends into the center bore (14) of the insert and the nipple extends into the inside of the casing. When the gun is fired the firing pin, (114A) contacts …
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 April 8, 1997 and granted May 23, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 8, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 8, 2019.
- 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.