Cooling medium path structure for gas turbine blade
CA 2229317 C · Owner: Mitsubishi Hitachi Power Systems, Ltd. · Inventors: Matsuo, Asaharu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved cooling medium path structure for cooling a gas turbine blade comprising a disk-side cooling medium path a blade-side cooling, medium path formed at the root portion of the blade and a delivery block disposed between the two cooling medium paths so as to establish communication between them. The delivery block is provided with an elastic engaging section which comes into elastic and line- contact with the disk-side cooling medium path and the blade-side cooling medium path whereby the sealing property of the contact portions of the structure is secured to allow a cooling medium to be supplied without leaking from the cooling medium paths and the heat of the cooling medium …
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 May 29, 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.