Water turbine with bi-symmetric airfoil
CA 2609014 C · Owner: Thompson, David Stuart · Inventors: Thompson, David Stuart
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Known underwater turbine units suffer from problems e.g. an ability to , operate in ebb and/or flow tides. Accordingly the invention provides aerofoil , (5), wherein the aerofoil (5) is symmetrical about a mid-chord line (A) thereof. The aerofoil (5) may be symmetrical about a chord (B) thereof. The underwater turbine unit (3) comprises at least one turbine (25) which comprises at least one blade (20) which comprises the aerofoil (5).
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 May 18, 2006 and granted July 14, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 18, 2026.
- 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.