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Expired Canadian patentCanada

Apparatus for reverse stranding and a method in connection with stranding and reverse stranding

CA 2045320 C · Owner: Nextrom Holding S.A. · Inventors: Karhu, Raimo

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

A reverse stranding apparatus for the reverse stranding of conductors to produce cables or the like and to a method in connection with stranding and reverse stranding. In the invention, the conductors are drawn from a distributor means into a nozzle or equivalent through peripheral tubes circumferentially surrounding a central tube and being twistable about the central tube recurrently in opposite directions. To facilitate the passage of the conductor a pressurized, fluid is fed through the peripheral tube upstream ends into the peripheral tubes during the drawing of the conductors to produce oscillation whereby the conductor passing through each peripheral tube remains substantially …

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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

  • Filed June 24, 1991 and granted March 13, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 24, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 24, 2013.
  • 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 24, 1991
GrantedMarch 13, 2001
Term endedJune 24, 2011
Patent numberCA 2045320 C
Classification (IPC)H01B13/02 +1 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedJune 24, 1991Patent grantedMarch 13, 2001Term endedJune 24, 2011

Sources & verification

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