Passive cooling system for auxiliary power unit installation
CA 2703115 C · Owner: Dionne, Luc · Inventors: Dionne, Luc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A passive cooling system for an auxiliary power unit (APU) installation on an aircraft is provided. The APU is housed within a compartment of the aircraft that is defined at least in part by the aircraft skin. The APU includes a compressor portion and an oil cooler contained separately within the compartment. An engine exhaust opening is defined in the aft portion of the aircraft skin. A first air inlet duct communicates with a second opening defined in the aircraft skin and with the compressor portion. The oil cooler is located within a second duct communicating with an opening other than the engine exhaust opening and with the engine exhaust opening whereby exterior cooling air and engine …
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 October 18, 2002 and granted April 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 18, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 18, 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.