Fans and turbines
CA 2579690 C · Owner: Bladon, Christopher George · Inventors: Bladon, Christopher George; Bladon, Paul Douglas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Overlapping twisted radial aerofoil blades or vanes are formed on a compressor rotor or turbine disk or the like (102) by electro-discharge machining with a curved tool electrode which is in the form of an elongate and substantially rigid element other than a wire (150) which is turned by a tool holder (130) as it is advanced on a helical path to form the inner surface of each blade or vane with the outer curve of the electrode or the outer surface of each blade , or vane with the inner curve of the electrode the disk being indexed to a , next rotary position after each blade surface is machined.
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 September 9, 2005 and granted June 10, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 9, 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.