Internal pipe repair sleeve
CA 2357532 A1 · Owner: Myint, Tom · Inventors: Myint, Tom
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This is a specially designed Sleeve for structural repairs to large diameter pipes from inside the, pipe. Normally, most of the buried pipes are being structurally repaired from outside the pipes. This Sleeve can be used to make repairs to round and off round pipes. It is most suitable to use for repairs to concrete steel or cement mortar , lined steel, fibreglass PVC pipes or any large diameter pipes from 750 mm diameter and up. The Sleeve consists of two half circular sections the two ends of each , section are equipped with special stiffened brackets. The two sections of the sleeve are to be set up by the sides of the pipe opposing each other. By tightening the bolts at both end …
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 September 11, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 11, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 11, 2023.
- 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.