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Expired Canadian patentCanada

Heat recoverable article for electrically insulating bus bar

CA 1069191 A · Owner: Raychem Limited · Inventors: Thornley, David W.M.; Clabburn, Robin J.T.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Disclosed is a heat-recoverable article particularly useful for electrically insulating and covering bus bars. The article which is, hollow and has at least one open end comprises a heat-shrinkable sleeve, and an electrically conducting liner covering at least a portion of its inner surface. Upon recovery on a substrate the liner remains in contact with the sleeve. The end portion of the sleeve is provided with electrically insulating sealant. The liner is advantageously a mastic a hot melt ad-, hesive or a thermosetting adhesive.

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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 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 1, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJanuary 1, 1980
Term endedJanuary 1, 1997
Patent numberCA 1069191 A
Classification (IPC)H02B1/20 +1 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJan 1, 1980Term endedJan 1, 1997

Sources & verification

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