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Expired Canadian patentCanada

Heat-exchanger integrated with the stator box of a gas turbine

CA 1187809 A · Owner: Nuovopignone - Industrie Meccaniche E Fonderia S.P.A. · Inventors: Vinciguerra, Costantino

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A gas turbine wherein an intermediate connection member of a generator for the gas relative to the power stage or transition piece acts as a heat-exchanger for the stator box of said power stage with which it is thermally in contact with its downstream end. The intermediate connection member is provided with an electric heating coil embedded in its external surface and an inner annular chamber within which cooling air is caused to flow along a helical path from the downstream end to the upstream end of said chamber.

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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 May 28, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 28, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 2, 1982
GrantedMay 28, 1985
Term endedMay 28, 2002
Patent numberCA 1187809 A
Classification (IPC)F01D25/24 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedAug 2, 1982Patent grantedMay 28, 1985Term endedMay 28, 2002

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.