Blade structure in a gas turbine
CA 2506484 A1 · Owner: Mitsubishi Heavy Industries, Ltd. · Inventors: Akita, Eiji; Ito, Eisaku
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the blade structure in a gas turbine inlet, included angles are made large. As a result a curve of a, relative relationship between incidence angles ic1 and is1 and pressure loss becomes mild. Entrance metal angles which are formed by an axial direction of the gas turbine and a tangential direction to a camber line at the front edge of the stationary blade, are made small. As a result it becomes possible to make the incidence angles small. Chord length of a tip portion of a moving blade is made large. As a result, it becomes possible to make small the deceleration on a rear surface of the tip portion of the moving blade. Accordingly, it becomes possible to make the pressure loss small, …
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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 January 11, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 11, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 11, 2024.
- 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.