Viking non re-usable syringe
CA 2320245 A1 · Owner: Turnbull, Andrew W. · Inventors: Swanson, Devin C.; Eriksson, Sven Gustav J.; Turnbull, Andrew W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A non re-useable syringe involving a liquid tight seal between a barrel and sliding piston, mechanism that may be used for any conventional syringe utility. The piston assembly comprises a, dual valve that splits into two single valves upon expulsion of the liquid contents. The dual valve, includes one valve that forms a seal with the barrel for the drawing in of liquid and one valve that, forms a seal with the barrel for expulsion of the liquid. Upon the first expulsion of liquid from a, respective syringe the two valves detach from one another. This action leaves the valve for, drawing liquid forever open preventing the syringe from again drawing in liquid, thus non-useable. This …
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, and the Claude kit works from them.
Why it's free to use
- Filed September 18, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 18, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 18, 2022.
- 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.