Transmission for driving counter-rotating propellers, lubrication system, and associated methods
CA 2368595 A1 · Owner: Bishop, Jordan W. · Inventors: Bishop, Jordan W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hybrid gear/sprocket-based transmission is provided for driving a pair of coaxial, counter-rotating propellers in aircraft and airboats. A drive shaft couplable to an engine, crank shaft extends rearward into the transmission case and a pair of coaxial , hollow driven, shafts extend rearward out of the transmission case to which are attachable a , pair of, propellers. A gear train containing an even number of gears, reverses the rotational, direction of the engine; a sprocket train containing two sprockets and a , chain connecting them, retains the rotational direction of the engine. Improved stability characteristics are, imparted by supporting the drive shaft at two points within …
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 18, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 18, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 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.