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Expired Canadian patentCanada

Electrical cut-out device

CA 1311786 C · Owner: Kearney-National (Canada) Limited · Inventors: Macdonald, Francis D.

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 horizontally mounted electrical cut-out device is provided. The device includes an insulator electrically isolating a pair of terminals and a fuse assembly comprising a fuse carrier housing a fuse element removably connected between the terminals. The fuse assembly is pivotally connected at one end to one of the terminals to allow the other end of the fuse assembly to engage with the other terminal when the fuse assembly is pivoted. The pivotal connection with the one terminal and the engagement with the other terminal is such so as to permit the fuse assembly to drop automatically to an open position following an interruption resulting from an overload or fault thereby establishing an …

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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 December 22, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 22, 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.
FiledMay 30, 1989
GrantedDecember 22, 1992
Term endedDecember 22, 2009
Patent numberCA 1311786 C
Classification (IPC)H01H71/20

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedMay 30, 1989Patent grantedDec 22, 1992Term endedDec 22, 2009

Sources & verification

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