Spray gun
CA 2476826 A1 · Owner: Robinson, George Walter · Inventors: Robinson, George Walter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A spraying apparatus (10) for spraying liquid surface treatment material comprises a gas inlet (20), a liquid inlet (50) and an outlet nozzle (30). The apparatus (10) also comprises a needle valve (40) for regulating the supply of surface treatment material to the nozzle (30). The needle valve (40) is at least partially located within a gas outlet chamber (26) and is adapted so as to cause minimal disruption to the gas flow from the gas inlet (20) to the nozzle (30). To further aid gas flow efficiency the gas supply passage (21) , is substantially straight the outlet chamber (26) has a laterally outwardly tapering inlet and an inwardly tapering outlet (270 31) and a smooth radius , …
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 16, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 16, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 2024.
- 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.