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Expired Canadian patentCanada

Apparatus and method for forming and inserting wave windings into a dynamoelectric machine stator core

CA 1282579 C · Owner: Advanced Machine And Tool Corporation · Inventors: Walker, Robert G.

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

An apparatus for wave winding forming and transferring, a coil and for inserting the coil into the slots of a stator core. The coil is first wound on a coil form. After this a pair of forming arms having wire formers mounted thereon to form a plurality of loops in the coil. Before the coil is stripped from the coil form, coil insertion tooling is moved relative to the coil form. The forming device includes apertures into which a pair of the insertion tooling blades are inserted whereby part of the wire formers will be located inside the insertion tooling blade array and part of the wire formers will be located outside of the blade 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 April 9, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 9, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 1, 1987
GrantedApril 9, 1991
Term endedApril 9, 2008
Patent numberCA 1282579 C
Classification (IPC)H02K15/08 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedOct 1, 1987Patent grantedApril 9, 1991Term endedApril 9, 2008

Sources & verification

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