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Expired Canadian patentCanada

Connectors for optical fibres

CA 1252661 A · Owner: Leetec Limited · Inventors: Des Forges, Howard A.; Gresty, John B.; Parmar, Harivaden A.

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

In a connector an optical fibre cable is passed, through a sub-assembly comprising a crimp body and collet. Then a sub-assembly comprising a threaded shell and ferrule is screwed onto the collet so that its tines are compressed in the ferrule onto the buffer coating of the cable at a location behind an end portion from which the buffer coating has been removed. Thus, the optical fibre passes through a precision hole for its projecting end to be removed by a cleaving blade passed across a slot. Two connectors are fixed to opposite ends of a rigid coupler by coupling nuts to bring oppposed fibres into register.

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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.
FiledSeptember 17, 1985
GrantedApril 18, 1989
Term endedApril 18, 2006
Patent numberCA 1252661 A
Classification (IPC)G02B6/38 +1 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedSep 17, 1985Patent 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.