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Expired Canadian patentCanada

Device for pre-tautening of the annular stator core laminations of a large electric generator

CA 1329471 C · Owner: Silei, Marco · Inventors: Silei, Marco; Panarese, Orlando

CIPO record

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

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Abstract From the Canadian patent

This invention refers to a device for the pretautening of the stator core laminations (20) of a large electric generator. A suitable number of anchoring devices (40) according to the invention is positioned between the shell (10) and the stator core laminations (20), evenly distributed in height and around the circumference. Each anchoring device (40) by means of which said pretautening is achieved, has a baseplate (41) secured to the shell (10) for example by welding, and a bracket (51) equipped with tong-like arms (52) by means of which it is able to grip the fins (32) made on tension rod keys (30) having a dovetail-shaped rib (31) capable of being inserted into a corresponding seat (21) …

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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 17, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 17, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 24, 1988
GrantedMay 17, 1994
Term endedMay 17, 2011
Patent numberCA 1329471 C
Classification (IPC)H02K15/00 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedFeb 24, 1988Patent grantedMay 17, 1994Term endedMay 17, 2011

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