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Expired Canadian patentCanada

Full range oil expulsion fuse

CA 1252816 A · Owner: Rte Corporation · Inventors: Lien, Wayne W.

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

Full Range oil Expulsion Fuse, Abstract of the Disclosure An oil expulsion fuse having a pair of contacts solidly secured to the ends of a high strength outer insulating tube. A resilient non-conducting inner sleeve is mounted within the bore of the insulating tube and contact assembly, the sleeve and tube being closely fit to each other. A fusible link is assembled in the bore of the resilient sleeve secured to the contact ends by fuse clamps. The fusible link includes a support tube also composed of a resilient non-conductive material which together with the inner sleeve absorb and trap high energy fuse link particles during a fusing operation.

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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 April 18, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 18, 2006.
  • 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 21, 1986
GrantedApril 18, 1989
Term endedApril 18, 2006
Patent numberCA 1252816 A
Classification (IPC)H01H85/02 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedMay 21, 1986Patent grantedApril 18, 1989Term endedApril 18, 2006

Sources & verification

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