Turbine stage structure
CA 1212048 A · Owner: Hitachi, Ltd. · Inventors: Hisano, Katsukuni; Kaneko, Ryoichi; Sasada, Tetsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, A stage structure of an axial turbine consists of a stationary inner ring, a stationary outer wall a row of, stationary blades mounted on thy stationary inner ring and outer wall, a row of moving blades and a shroud ring mounted on the tips of the moving blades. An annular member is disposed immediately downstream of the axial gap formed between the axial end of the shroud ring and the surface of the outer wall axially facing the axial end of the shroud ring. The effect of this annular member is to reduce the expansion space immediately downstream of the axial gap. As a result circulation of the ejection flow from the main stream through the axial gap is reduced and the turbine …
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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
- Granted September 30, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 30, 2003.
- 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.