Method and device for forming a socket on a pipe of thermoplastic material
CA 2320265 A1 · Owner: Wavin B.V. · Inventors: Hutchinson, William George; Boer, Hans
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method for forming a socket on a pipe of thermoplastic material. In the process, an end section, to be provided with a socket of, the pipe is heated in a heating station. Then the pipe with the heated end , section is transferred to a socket-forming station (30) which comprises a socket forming mandrel (40) the socket-forming station being set , up in such a way that a pipe can therein be provided with a socket, while the end section of another pipe can simultaneously be heated in the heating station. This is followed by the socket forming mandrel (40) being introduced into the pipe end section heated to a suitable , socket forming temperature and the end section being formed, into a …
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 16, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 16, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 16, 2021.
- 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.