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Expired Canadian patentCanada

Control device of an electric circuit breaker

CA 1231745 A · Owner: Merlin Gerin · Inventors: Nebon, Jean-Pierre; Baginski, Pierre

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

The electric control to reset the circuit breaker is formed by a sub-assembly being able to be easily coupled to the mechanism of the circuit breaker. At the end of the charging travel of the closing spring a control cam disconnects and stops the motor. The charging position is defined by a latch interlocking the charging cam a closing operation, being induced by the release of the latch and a limited rotation of this charging cam. The link shaft between the motoreducing sub-assembly and the machanism transmits this closing limited rotation to the control cam which induces, the restarting and the connecting of the motor for a reset operation of the closing spring.

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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 January 19, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 21, 1985
GrantedJanuary 19, 1988
Term endedJanuary 19, 2005
Patent numberCA 1231745 A
Classification (IPC)H01H3/30 +1 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedJan 21, 1985Patent grantedJan 19, 1988Term endedJan 19, 2005

Sources & verification

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