Line section of a gas-insulated line
CA 2195138 A1 · Owner: Windmar, Dan · Inventors: Leijon, Mats; Ming, Li; Rongsheng, Liu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The line section of a gas-insulated line (1) contains a high-voltage electric conductor (4) and a pressure pipe (3) which is made from a thermoplastic material, is filled with insulating gas and holds the electric conductor (4) on insulated supports (2). The pressure pipe (3) has two pipe sections (6 7) which, are welded to one another on the end face and are respectively widened like a trumpet in the radial direction on the end faces facing one another. This conductor section can be produced in an extremely cost-effective fashion and is distinguished at the same time by outstanding dielectric properties.
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 January 15, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 15, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 15, 2019.
- 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.