Gas pipeline drip
CA 2129306 C · Owner: St. Clair Pipelines Ltd. · Inventors: Haukeness, Miles E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Know drips for gas transmission pipelines do not work effectively for two phase liquid-gas flows. Disclosed is a drip having two parts;a flow separator and a receptacle. The flow separator comprises a pipe having circumferential apertures in the wall. Surrounding the pipe and the apertures is a shell that defines an annular passage between the pipe wall and the shell. Annular gas liquid flow entering the separator will be divided. Most of the gas will pass the apertures and continue through the pipe. Most if not all of the liquid and some gas will pass through the aperture. It is then passed to a receptacle where the fluid is removed. The secondary gas flow is then either recombined with …
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 July 29, 1994 and granted February 18, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 29, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 2016.
- 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.