Method for evening tension in a twisted pair electric cable
CA 2418682 C · Owner: Smith, Chad R. · Inventors: Smith, Chad R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of evening the tension in the conductors of a twisted pair electric cable during the cable's installation comprising the step of pulling the cable through stringing rollers while attached to a tension evening device. That allows constant adjustment of the tension in each of the cable's conductors which prevents an unwanted looping effect and eliminates the need to even the tension at the end of the installation process. The tension evening device comprises a pull rope attached to a swivel that holds a sheave. The device is sized small enough so that it fits through the stringing rollers such that during the installation of the cable, the entire tension evening device is pulled …
Read the whole patent
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 February 7, 2003 and granted June 26, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 2025.
- 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.