Air vent assembly
CA 2017943 C · Owner: Griepentrog, Joachim · Inventors: Griepentrog, Joachim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An air vent assembly has a perforated cylindrical mantle and a bottom having closable air exit openings. One or more restriction rings are positioned in the mantle and are rotatable or vertically adjusted or rotatable and adjustable. The adjustment and/or rotation may be achieved manually or automatically. The air vent assembly is preferably used for heating reheating or cooling of high rooms and is preferably installed above walking height. The air vent assembly provides for an improved directing of the exiting air so that heated air may directly reach the floor of the room and cooled air is substantially admixed with the air in the room before reaching the floor.
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 May 31, 1990 and granted August 24, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 31, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 31, 2012.
- 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.