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Expired Canadian patentCanada

Ventilated gusset for single-layer turns in a dynamoelectric machine

CA 1305993 C · Owner: General Electric Company · Inventors: Kaminski, Christopher Anthony

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 conductor bar in a dynamoelectric machine includes a coolant channel having a depressed portion passing under a gusset reinforcing a joint with an end turn. The end turn also includes a coolant channel with a depressed portion under the gusset and meeting the depressed portion in the conductor bar. The gusset includes a groove therein generally, congruent with the two depressed portions passing thereunder. Diagonal entry and exit portions on the underside of the gusset reduce flow turbulence of coolant entering and exiting the flow channel defined between the gusset and the two depressed portions. In a further embodiment of the invention a diagonal, portion joining the two depressed …

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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 August 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 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.
FiledDecember 1, 1988
GrantedAugust 4, 1992
Term endedAugust 4, 2009
Patent numberCA 1305993 C
Classification (IPC)H02K9/02 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedDec 1, 1988Patent grantedAug 4, 1992Term endedAug 4, 2009

Sources & verification

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