Valve connector system for plastic pipe
CA 2189596 C · Owner: Hobbs, Billy J. Jr. · Inventors: Hobbs, Billy J. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A valve connector system for attaching a metal or plastic valve to a plastic pipe, the system including a valve with an externally threaded inlet port, a tubular adapter having an annular flange and a sealing member a, threaded lock nut for attaching the adapter to the valve and a tubular, plastic coupling for use in cementing the free end of the tubular adapter to the free end of the plastic pipe. The annular flange of the tubular adapter preferably abuts against the open end of the valve inlet port and the annular sealing member provides a water-tight seal between the tubular adapter and the inside diameter of the valve inlet port. The threaded lock nut has female threads to engage the …
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 November 5, 1996 and granted April 21, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 5, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 2018.
- 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.