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Expired Canadian patentCanada

Circuit breaker mounted within an explosion-proof enclosure

CA 1095571 A · Owner: General Electric Company · Inventors: Jones, William B.

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

An improved circuit breaker is mounted within an explosion-proof enclosure. The circuit breaker has an insulated case and a manually operable handle extending from one surface of the case. Also provided are means which are operably externally of the enclosure for moving the handle of the circuit breaker between an on and an off position. The circuit breaker further includes exploding gas venting means located on opposite sides of the handle for preventing exploding gases within the explosion-proof enclosure from shattering the case of the circuit breaker.

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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 February 10, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 10, 1998.
  • 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 29, 1978
GrantedFebruary 10, 1981
Term endedFebruary 10, 1998
Patent numberCA 1095571 A
Classification (IPC)H01H71/02 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMarch 29, 1978Patent grantedFeb 10, 1981Term endedFeb 10, 1998

Sources & verification

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