Testable pipe joint
CA 2454764 A1 · Owner: Deremiah, Richard E. · Inventors: Deremiah, Richard E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A locking ring-type pipe joint has a spigot ring provided on a first pipe section, a bell ring provided on a second pipe section and a, locking ring that may be contracted to engage the spigot ring to the bell ring. First and second circumferential grooves formed in the spigot ring are configured to receive a test gasket and a pipe seal gasket respectively. An annular test space between the gaskets is in closed connection with a pressure port, whereby the pressure seal of the pipe seal gasket may be evaluated after the pipe sections are joined and prior to activating the joint restraint feature, installing the next pipe and back-filling the pipe , sections.
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 December 31, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 31, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 31, 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.