Pipe adaptor and method
CA 2339364 A1 · Owner: Synthotech Special Products Limited · Inventors: Saunders, Anthony Charles Patrick; Scott, Peter Sidney
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An adaptor (14) to seal a liner pipe (12) inside a host pipe (10) comprises a flange (16) for sealing connection to one end of the liner pipe. A deformable sleeve (20) is on the flange. An expander element (24) is detachably connected to a placement device (28), and a cord (32) draws the expander element into the deformable sleeve to deform the sleeve into sealing engagement with the host pipe. A block (18, 40) prevents further movement of the expander element into the sleeve such that further drawing of the cord detaches the placement device from the expander element. In one embodiment the placement device is , connected to the expander element by a frangible link (26) which breaks …
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 28, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 28, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 28, 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.