Method of salvaging stationary blades of a steam turbine
CA 1303339 C · Owner: Dadhich, Ghanshyam M. · Inventors: Dadhich, Ghanshyam M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
22 - 54,210, ABSTRACT OF THE DISCLOSURE A method of salvaging stationary blades of a steam turbine cylinder includes tack welding abutting stationary blade platforms, cutting stationary blade roots out of the steam turbine cylinder, machining a side of the root and platform for each stationary blade to reduce thickness along the side and mounting the stationary blades in a new cylinder having mounting grooves for each row of stationary blades. Each mounting groove has an annular recess formed in a sidewall thereof and the cylinder has a sloping surface which faces a machined area of the root and platform of the stationary blades. The space between the sloped surface and the machined area …
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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 June 16, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 2009.
- 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.