Water current powered generating apparatus
CA 2589965 C · Owner: Johnston, Barry · Inventors: Johnston, Barry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a power generating apparatus suitable for use in extracting energy from the movement of water particularly tidal movement. , The apparatus comprises an elongate generally circular in cross section, buoyancy vessel (1) having depending from its underside on a mounting means rotatable rotor blades (2). The rotor blades are connected to a power generating means whereby in use of the apparatus movement of water across the rotor blades, drives them so as to generate power in the power generating means.
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 December 12, 2005 and granted November 19, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 12, 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.