Method and apparatus for charging pressurized systems
CA 2235673 C · Owner: Trigiani, Phil · Inventors: Trigiani, Phil
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method and apparatus for charging a closed pressurizable fluid system (40) with an appropriate fluid (44) comprising a) , (16) connecting to the system (44) a closed unpressurized container (42) , containing a predetermined amount of the fluid (44) b) (18) mechanically , forcing the contents out of the container (42) into the system being recharged (40), and c) (19) disconnecting the container (42). Preferably the container , (42) is cylindrical cartridge having a piston sealably disposed therein to displace the cartridge contents. The method and apparatus are effective in recharging various pressurized systems and fluids such as air conditioning , and …
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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, and the Claude kit works from them.
Why it's free to use
- Filed June 6, 1997 and granted August 13, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 6, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 6, 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.