Cooling medium path in gas turbine moving blade
CA 2229322 C · Owner: Matsuo, Asaharu · Inventors: Chikami, Rintaro; Hirokawa, Kazuharu; Matsuo, Asaharu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cooling medium path of gas turbine moving blade is so constructed that a concave spherical surface C is formed on an inside surface of an end portion of a cooling medium path B on a blade side and a hollow pipe 6 in which one end thereof has a convex spherical surface D which engages the concave spherical surface C and the other end has a convex spherical surface F which engages an inside surface of a cooling medium path E on a rotor disc side is provided. The hollow pipe 6 communicates between the cooling medium path B on the blade side and said cooling medium path E on the rotor disc side. Supporting device 7 8, 9 for holding the hollow pipe 6 is provided at the communicating position. …
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 11, 1998 and granted July 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 11, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 11, 2020.
- 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.