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Expired Canadian patentCanada

Trip indicator and electrical switching apparatus employing the same

CA 2538858 C · Owner: Eaton Corporation · Inventors: Gibson, Jeff S.; Lias, Edward E.; Whipple, Michael J.

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

A trip indicator is for a circuit breaker having a housing including first and second openings separable contacts and an operating mechanism having an operating handle for opening and closing the separable contacts. The trip indicator includes a trip indicating member with a first end having a trip indicia and a second end with first and second projections. The first projection is engaged by a cradle of the operating mechanism when the separable contacts are not tripped in order to prevent the trip indicia from being viewable at the second opening of housing. The first projection is disengaged and released when the separable contacts trip causing the trip indicating member to move in order …

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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

  • Filed March 8, 2006 and granted September 16, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 8, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 8, 2006
GrantedSeptember 16, 2014
Term endedMarch 8, 2026
Patent numberCA 2538858 C
Classification (IPC)H01H73/12

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedMarch 8, 2006Patent grantedSep 16, 2014Term endedMarch 8, 2026

Sources & verification

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