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Expired Canadian patentCanada

Turbine blade with integral shroud and method of assembling the blades in a circular array

CA 1324765 C · Owner: Westinghouse Electric Corporation · Inventors: Partington, Albert J.; Warner, Ronald E.

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 circular array of rotatable blades formed from blades having an integral shroud with a leading planar surface and a trailing planar surface, the leading planar surface being generally parallel to an axial radial plane passing through the center of the root of the blade and the trailing planar surface, if extended intersecting the, axial radial plane passing through the center of the root of the blade to form an angle generally equal in degrees to 360 divided by the number of blades forming the circular array.

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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 November 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 30, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 21, 1983
GrantedNovember 30, 1993
Term endedNovember 30, 2010
Patent numberCA 1324765 C
Classification (IPC)F01D5/00 +1 more

Timeline

Timeline From CIPO dates

198419871990199319961999200220052008Application filedNov 21, 1983Patent grantedNov 30, 1993Term endedNov 30, 2010

Sources & verification

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