Gas pressure accumulating and supplying device for use in model guns
CA 2173045 C · Owner: Kunimoto, Keiichi · Inventors: Kunimoto, Keiichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordNo Claude kit for weapons
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Abstract From the Canadian patent
A gas pressure accumulating and supplying device for use in model guns, which comprises a pressure accumulating chamber provided in a case member, a gas injecting opening provided on a bottom portion of the case member, a gas introducing structure extending from the gas injecting opening into the pressure accumulating chamber a gas, discharging passage extending from the pressure accumulating chamber and a control valve structure provided in the gas discharging passage for controlling supply of gas pressure from the pressure accumulating chamber. The pressure accumulating chamber is provided therein with a partition member for partitioning the pressure accumulating chamber into a main …
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 March 29, 1996 and granted August 10, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 29, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 29, 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.