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Expired Canadian patentCanada

Under oil expulsion fuse cartridge assembly

CA 1255348 A · Owner: Rte Corporation · Inventors: Borck, Gordon T.; Muench, Frank J.

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

Abstract of the Disclosure, An under oil expulsion fuse cartridge assembly includes a tubular housing of non-electrical conductive material, an electrically conductive contact removably threadedly mounted on each end of the housing, and a replaceable fuse assembly removably received within the tubular housing. One of the end contacts incorporates a pressure chamber providing a flushing and cleaning operation during the interruption process. The fuse assembly includes a fuse liner tube in a fuse link therein in the form of a flat ribbon element electrically connected to each of the end contacts. One end of the fuse link is mounted on a thin disc which includes a plurality of projecting lands …

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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 June 6, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 6, 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.
FiledJune 20, 1986
GrantedJune 6, 1989
Term endedJune 6, 2006
Patent numberCA 1255348 A
Classification (IPC)H01H85/04 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedJune 20, 1986Patent grantedJune 6, 1989Term endedJune 6, 2006

Sources & verification

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