Air return for venturi system
CA 2085165 C · Owner: Van Oirschot, Frank · Inventors: Van Oirschot, Frank
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An air return is useable in a venturi system having an upstream air induction member feeding a product flow line downstream of the air induction member. The air return itself comprises a housing having a product flow region to be fitted in line with the product flow line an, air draw region separated from the product flow region by a perforate divider with a baffle internally of the divider and an air flow line from the housing to be fitted back to the air induction member.
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 December 11, 1992 and granted May 13, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 2014.
- 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.