Model gun with automatic bullet supplying mechanism
CA 2123458 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 a movable, member provided between a bullet holding chamber provided at the back of the barrel and a pressure chamber with variable capacity provided in the slider, and a gas passage controller provided to be movable in the movable member, wherein the gas passage controller is operative selectively to control a first gas passage extending from a pressure accumulating chamber through the movable member to the bullet holding chamber to be open so that gas discharged from the pressure accumulating chamber is supplied through the first gas passage to the bullet holding chamber …
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 May 12, 1994 and granted August 3, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 12, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 12, 2016.
- 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.