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Expired Canadian patentCanada

Sealing cable junctions

CA 1302530 C · Owner: Alh Systems Limited · Inventors: Wade, Philip James; Curtis, Robert Leslie; Makiyo, Minoru

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

A method and an apparatus for sealing a cable junction are provided. To seal a cable junction, an insert is placed between two branch cables of the junction, which is then enclosed by a heat shrinkable envelope. The insert has at least one insert part having a block of heat fusible material attached by one or more flanges of heat conductive material to the branch cables. The block lies between the branch cables at least partially inside the envelope. Then, when the envelope is heated to cause it to shrink, the block fuses, thus forming a seal. For most sizes of branch cables, two insert parts may be used but three, or more may be used for large branch cables. The flange preferably has a …

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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 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 26, 1987
GrantedJune 2, 1992
Term endedJune 2, 2009
Patent numberCA 1302530 C
Classification (IPC)H02G15/18 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedOct 26, 1987Patent grantedJune 2, 1992Term endedJune 2, 2009

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