Maneuver feel system for a rotary wing aircraft
CA 2114326 C · Owner: Gold, Phillip J. · Inventors: Wright, Stuart C.; Gold, Phillip J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotary wing aircraft flight control system (21) which receives signals indicative of aircraft pitch rate (88) pitch , attitude (86), bank angle (87) and airspeed (66) and responds to a, pitch command from a sidearm controller (29) to control the pitch of an aircraft comprises means for scheduling and providing a set point signal indicative of the desired aircraft pitch rate of change, means for computing the difference between the said point and the pitch rate signal and for providing a, pitch rate error signal indicative thereof inverse model means, (56) responsive to said set point signal for scheduling a feed-forward command signal to drive the aircraft to respond in a manner which …
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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 August 21, 1992 and granted September 26, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 21, 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.