Rotor system for a remotely controlled aircraft
CA 2440076 A1 · Owner: Vogel, Heribert · Inventors: Vogel, Heribert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a remote control flying machine in particular a , remote control ultralight helicopter with at least one rotor blade (104), the pitch (.alpha.) of which may be adjusted. According to the invention the , adjustment of the pitch (.alpha.) of the at least one rotor blade is achieved by means of a force, in particular a torsion force directly applied to the rotation axis of the rotor blade. Said force is generated by a magnetic field variable by the electrical control of at least one coil (196) which is not part of an electric motor.
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 February 28, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 28, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 28, 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.