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Expired Canadian patentCanada

Molded case circuit breaker line strap configuration

CA 1323898 C · Owner: Arnold, David · Inventors: Arnold, David; Kowalczyk, Karen Bloomquist

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 molded case circuit breaker enclosure cooperates with the current-limiting line strap to prevent the egress of ionized gases. The gases are generated by a high temperature arc which occurs when the contacts are separated under short circuit conditions.

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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 November 2, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 2, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 21, 1989
GrantedNovember 2, 1993
Term endedNovember 2, 2010
Patent numberCA 1323898 C
Classification (IPC)H01H33/02 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedSep 21, 1989Patent grantedNov 2, 1993Term endedNov 2, 2010

Sources & verification

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