Gas turbine shroud and platform seal system
CA 2229883 C · Owner: Fukuno, Hiroki · Inventors: Tomita, Yasuoki; Ito, Eisaku; Suenaga, Kiyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a gas turbine shroud and platform seal system, in which a flowing-out of a sealing air does not disturb a combustion gas flow, and an aerodynamic loss is removed. A leaking air (60) leaks from between a platform (2) of moving blade (1) and an inside shroud (12) in a stationary blade (11) however, in a front of the, moving blade (1) the leaking air (60) flows in an S-shaped manner within a space (8, 17) by a projecting end portion (12b) of the shroud a honeycomb seal (14) and a projecting portion (4) of the platform and, flows out to the same flow direction as thalt of a combustion gas (50) along a surface of the platform (2). At a rear of the moving blade (1) the …
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 19, 1998 and granted February 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 19, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 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.