Model gun with automatic bullet supplying mechanism
CA 2255310 C · Owner: Western Arms · Inventors: Kunimoto, Keiichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
A model gun with automatic bullet supplying mechanism which, comprises a slider provided to be movable along a barrel and a movable member provided between a bullet holding chamber and a pressure receiving portion to be movable along moving directions of the slider. A first gas guiding passage for guiding gas supplied through a gas leading passage from a pressure accumulating chamber to the bullet holding chamber and a second gas guiding passage for guiding the gas supplied through the gas leading passage from the pressure accumulating chamber to the pressure receiving portion are provided in the movable member to be coupled with each other and during a period in which the, gas leading …
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 December 8, 1998 and granted August 7, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 8, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 8, 2020.
- 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.