Reversible driving apparatus for pcu pumps
CA 2554264 C · Owner: Pratt & Whitney Canada Corp. · Inventors: Santerre, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus is provided for driving two propeller engines of a multi-propeller aircraft which particularly include two propeller control unit (PCU) pump driving shafts that rotate in opposite rotational directions respectively. , The two PCU pumps are driven in the same rotational direction via respective gear sets. Therefore, a single type of PCU pumps can be used for a single design of a multi-propeller system of aircraft.
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 January 17, 2005 and granted May 28, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 17, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.