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Expired Canadian patentCanada

Molded case circuit breaker actuator-accessory module

CA 1305990 C · Owner: General Electric Company · Inventors: Russell, Ronald Richard

CIPO record

Overview

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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 integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the accessory components contained within the integrated protection unit cover from the environment. A combined overcurrent trip actuator and multiple accessory module is either field-installed or factory-installed within the integrated protection unit. A separate actuator-accessory module is selected for different combinations of accessory functions. One such actuator-accessory module provides overcurrent protection along with remote trip facility.

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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 August 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 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.
FiledFebruary 23, 1989
GrantedAugust 4, 1992
Term endedAugust 4, 2009
Patent numberCA 1305990 C
Classification (IPC)H01H71/32 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedFeb 23, 1989Patent grantedAug 4, 1992Term endedAug 4, 2009

Sources & verification

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