Optical cable elements
CA 1135095 A · Owner: Industrie Pirelli Societa Per Azioni · Inventors: Portinari, Antonio; Longoni, Sergio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A unitary optical cable is disclosed which comprises a self-sustaining tube of elastic material enclosing one or more fibers and having an inner wall of a diameter larger than the diameter of a circle circumscribing the fiber or fibers so that the fiber or fibers are free to move within the tube. The element differs from prior art optical cable elements in that it has a longitudinally extending cut therein which extends from the outer surface of the tube to the inner surface of the tube. This cut provides a pair of tube wall edge faces at opposite sides of the cut. The resilient nature of the tube is such that it inherently presses the edge faces of the tube wall against one another and …
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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 November 9, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 9, 1999.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.