Passive cooling system for auxiliary power unit installation
CA 2703166 C · Owner: Pratt & Whitney Canada Corp. · Inventors: Dionne, Luc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An auxiliary power unit (APU) assembly housed within a compartment of an aircraft including a compressor portion a gas exhaust end, and an exhaust eductor in communication with the exhaust end of the APU. The eductor includes a nozzle disposed downstream of and in fluid communication with the APU exhaust end for receiving a gas exhaust flow from the APU in use. A mixing member in fluid communication with the nozzle and a source of secondary air is adapted to introduce secondary air into the gas exhaust flow. A bleed nozzle is in fluid communication with the APU compressor portion and the nozzle and is adapted to introduce pressurized air from the compressor portion into the exhaust flow. …
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 January 15, 2013. 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.